{"id":236,"date":"2022-12-21T14:44:06","date_gmt":"2022-12-21T05:44:06","guid":{"rendered":"https:\/\/supraceramics.jp\/?page_id=236"},"modified":"2022-12-21T14:49:14","modified_gmt":"2022-12-21T05:49:14","slug":"home","status":"publish","type":"page","link":"https:\/\/supraceramics.jp\/","title":{"rendered":"Home"},"content":{"rendered":"\n<div class=\"wp-block-query is-layout-flow wp-block-query-is-layout-flow\"><ul class=\"wp-block-post-template is-layout-flow wp-block-post-template-is-layout-flow\"><li class=\"wp-block-post post-2312 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/02\/2312\/\" target=\"_self\" >Publication | Chem. Mater. (Motohashi, Sugimoto, et al.) \u201cUnconventional Oxygen Storage\/Release Properties of Melilite-Type Ba<sub>2<\/sub>MnGe<sub>2<\/sub>O<sub>7+\u03b4<\/sub> Associated with Complex Structural Transformation\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Unconventional Oxygen Storage\/Release Properties of Melilite-Type Ba<sub>2<\/sub>MnGe<sub>2<\/sub>O<sub>7+\uf064<\/sub> Associated with Complex Structural Transformation<\/p>\n<p>Kosaku Ohishi, Satoshi Ogawa, Hisanori Yamane, Saburo Hosokawa, Zi Lang Goo, Kunihisa Sugimoto, Miwa Saito, Teruki Motohashi<\/p>\n<p>Here, we report the synthesis and characterization of melilite-type A2MnC2O7 (A = Sr, Ba; C = Si, Ge) and the discovery of its unconventional oxygen storage and release properties. Unlike conventional Mn-containing oxygen storage materials driven by the Mn2+\/Mn3+ redox couple, Ba2MnGe2O7+\u03b4 (BMG) does not require highly reducing atmospheres for oxygen release and exhibits reversible oxygen storage\/release under oxygen-rich conditions at moderate temperatures (200\u2013500 \u00b0C). Comprehensive compositional and structural analyses utilizing X-ray absorption spectroscopy, synchrotron in situ powder X-ray diffraction, single-crystal X-ray diffraction, and powder neutron diffraction revealed that the oxygen storage\/release processes involve changes in the local coordination environment. Specifically, MnO4 tetrahedra in the reduced phase change into MnO5 trigonal bipyramids in the oxidized phase, accompanied by a distinct transformation from the fundamental melilite-type structure of Ba2MnGe2O7 (tetragonal, space group P4\u030521m) to a 5a \u00d7 5a \u00d7 1c superstructure of Ba2MnGe2O7.455(4) (tetragonal, P4\u0305). BMG exhibits a maximum oxygen storage capacity of \u03b4 \u2248 0.45 and, notably, develops a distinctive blue color upon oxygen storage. This characteristic response suggests promising potential for various oxygen-related applications, such as oxygen sensors and oxygen-sensitive inorganic pigments.<br \/>\n<a href=\"https:\/\/doi.org\/10.1021\/acs.chemmater.5c02228\"><br \/>\n<em>Chem. Mater.<\/em> <b>2026<\/b>, <i>38<\/i>, 3, 1084-1093. (DOI: 10. 10.1021\/ acs.chemmater.5c02228)<br \/>\n<\/a><\/p>\n<p><a href=\"\u201dhttps:\/\/www.kanagawa-u.ac.jp\/news\/article0101_02641\u201d\">\u30d7\u30ec\u30b9\u30ea\u30ea\u30fc\u30b9\uff08\u795e\u5948\u5ddd\u5927\u5b66\uff09<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2026-02-16T13:59:08+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/02\/2312\/\">2026\u5e742\u670816\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2308 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/02\/2308\/\" target=\"_self\" >Publication | Artif. Photosynth. (Onda, Maeda et al.) \u201cDesign Strategy for Heteroleptic Ir(III) Photosensitizers with Spatially Separated Excited Electrons toward Efficient CO2 Reduction\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Hybrid photocatalysts that integrate functional molecular units with semiconductor surfaces offer a promising route toward efficient artificial photosynthesis, yet controlling interfacial charge transfer dynamics remains a major challenge. Here we report a series of heteroleptic Ir(III) complex photosensitizers bearing 1-phenylisoquinoline ligands with phosphonic acid anchoring groups, designed to regulate the spatial localization of excited electrons. When combined with TiO<sub>2<\/sub>-loaded polymeric carbon nitride and a supramolecular <b>RuRe<\/b> photocatalyst, these Ir(III) photosensitizers improve visible-light CO<sub>2<\/sub> reduction activity to selectively yield CO. Ir(III) complexes in which the excited electron is localized on the 2,2\u2032-bipyridine ligand and is thus spatially separated from the semiconductor interface exhibited higher turnover numbers and apparent quantum yields than analogues with the excited state positioned closer to the semiconductor surface. Time-resolved photoluminescence and photoelectrochemical measurements confirmed that these molecular architectures suppress back electron transfer by facilitating long-lived one-electron-reduced species. This work demonstrates that precise control of excited-state electron localization in surface-immobilized photosensitizers provides an effective strategy to modulate interfacial charge recombination, thereby improving photocatalytic CO<sub>2<\/sub> reduction efficiency. The mechanistic insights gained here highlight a general molecular design principle for constructing integrated photocatalyst systems capable of efficient solar-to-chemical energy conversion.<\/p>\n<p>&nbsp;<\/p>\n<p>Design Strategy for Heteroleptic Ir(III) Photosensitizers with Spatially Separated Excited Electrons toward Efficient CO<sub>2<\/sub> Reduction<\/p>\n<p>&nbsp;<\/p>\n<p>Toshiya Tanaka, Masahito Oura, Rikuya Nagao, Joe Onodera, Yusuke Kuramochi, Ken Onda,* Osamu Ishitani,* Kazuhiko Maeda*<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1021\/aps.5c00033\">Artif. Photosynth. 2026, in press.<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2026-02-12T14:37:23+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/02\/2308\/\">2026\u5e742\u670812\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2304 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/02\/2304\/\" target=\"_self\" >Publication | ACS Catal. (Katagiri, Maeda et al.) \u201cProtective Reaction Fields Created by Deep Eutectic Solvents against Molecular Oxygen in CO2 Reduction over Ru(II)-Complex\/Ag\/Polymeric Carbon Nitride Hybrid Photocatalysts\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Photocatalytic CO<sub>2<\/sub> reduction into value-added fuels has garnered considerable attention as a strategy to mitigate global warming and fossil fuel depletion. However, under practical aerobic conditions, photocatalytic activity often declines dramatically due to undesirable O<sub>2<\/sub>-photoreduction. Here, we show that deep eutectic solvents (DESs) can provide a protective reaction field against O<sub>2<\/sub> while maintaining robust CO<sub>2<\/sub> reduction performance using a Ru(II)-complex\/Ag\/polymeric carbon nitride (PCN) ternary hybrid photocatalyst. The turnover number of formic acid reached 1300 with 96% selectivity, and the apparent quantum yield was 2.7% in ethaline, composed of choline chloride and ethylene glycol, under pure CO<sub>2<\/sub> conditions. Notably, ethaline retained 84% of its formic acid productivity under aerobic conditions with high selectivity, whereas the same catalyst showed only 63%, 42%, 28%, and 4% productivity in DMSO, DMA, MeOH, and MeCN, respectively. The protective nature of ethaline against O<sub>2<\/sub> was also found in another hybrid photocatalyst consisting of a binuclear Ru(II) complex and Ag\/PCN. This superior protective reaction field against O<sub>2<\/sub> stems primarily from the low oxygen solubility and the low oxygen diffusion coefficient of ethaline. At the same time, its high CO<sub>2<\/sub> solubility, biodegradability, and nonvolatility make it a promising solvent for CO<sub>2<\/sub> reduction in O<sub>2<\/sub>-containing environments\u2500an important step toward practical photocatalytic applications.<\/p>\n<p>&nbsp;<\/p>\n<p>Protective Reaction Fields Created by Deep Eutectic Solvents against Molecular Oxygen in CO<sub>2<\/sub> Reduction over Ru(II)-Complex\/Ag\/Polymeric Carbon Nitride Hybrid Photocatalysts<\/p>\n<p>&nbsp;<\/p>\n<p>Jo Onodera, Xian Zhang, Toshiya Tanaka, Ryuichi Nakada, Megumi Okazaki, Naoki Tarutani, Kiyofumi Katagiri, Kazuhiko Maeda*<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acscatal.5c07569\">ACS Catal. 2026, in press.<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2026-02-12T14:35:27+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/02\/2304\/\">2026\u5e742\u670812\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2287 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/01\/2287\/\" target=\"_self\" >Publication | J. Phys. Chem. Lett. (Okazaki, Maeda, Sugimoto, Katagiri et al.) \u201cIn Situ X-ray Absorption Fine Structure Spectroscopy Measurement of Suspended Cobalt Oxide Nanoparticle Water Oxidation Catalyst\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>In Situ X-ray Absorption Fine Structure Spectroscopy Measurement of Suspended Cobalt Oxide Nanoparticle Water Oxidation Catalyst<\/p>\n<p>Megumi Okazaki,* Zi Lang Goo, Haruka Yamamoto, Kenta Ikegami, Issei Yamamoto, Naoki Tarutani, Fumitaka Takeiri, Takeshi Watanabe, Shunsuke Nozawa, Kiyofumi Katagiri, Kunihisa Sugimoto, Kazuhiko Maeda*<\/p>\n<p>Water oxidation using a heterogeneous catalyst under near-neutral pH conditions is of importance in artificial photosynthesis. This work assessed photochemical water oxidation over a supported cobalt oxide (CoO<sub><i>x<\/i><\/sub>) nanoparticle catalyst in the presence of Ru(II) trisdiimine as a photosensitizer and sodium persulfate as an electron acceptor, in both phosphate and borate buffer solutions at a pH of 7.9, using X-ray absorption fine structure spectroscopy (XAFS). The steady-state activity of the CoO<sub><i>x<\/i><\/sub> was found to be increased by a factor of 3\u22124 in the phosphate buffer. Co-<i>K<\/i> edge in situ XAFS measurement revealed that this catalyst maintained a high-valence CoOOH-like local structure during photoirradiation in the phosphate buffer. In contrast, CoOOH-like species rapidly formed in the borate buffer but remained stable for less than 40 min, with the subsequent generation of a mixture of Co<sup>2+<\/sup> and Co<sup>3+<\/sup> states with 4 and 6 coordination numbers. These results indicate that the phosphate buffer evidently promoted the generation and stabilization of active CoOOH species, thus facilitating water oxidation. The borate buffer failed to sustain these active species, resulting in lower catalytic activity. These insights provide a basis for the rational design of catalytic systems, emphasizing the importance of buffer-controlled local environments in sustaining active species for efficient water oxidation.<\/p>\n<p><a href=\"https:\/\/pubs.acs.org\/doi\/10.1021\/acs.jpclett.5c03125\">J. Phys. Chem. Lett. 2026, in press.<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2026-01-19T15:03:23+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/01\/2287\/\">2026\u5e741\u670819\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2280 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/01\/2280\/\" target=\"_self\" >Publication | J. Am. Chem. Soc. (Ohmi, Taniguchi, Bhawna, Fukui, Yamamoto et al.) \u201cDimensionality Reduction of Formamidinium-Rich Lead Iodide Perovskite-Derived Structures\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Dimensionality Reduction of Formamidinium-Rich Lead Iodide Perovskite-Derived Structures<\/p>\n<p>Takuya Ohmi, Wataru Taniguchi, Bhawna, Tomoya Fukui, Yuki Haruta, Takayuki Nakanishi, Takanori Fukushima, Makhsud I. Saidaminov, Masaki Azuma, Takafumi Yamamoto*<\/p>\n<p>Formamidinium lead iodide, FAPbI<sub>3<\/sub> (FA<sup>+<\/sup> = CH(NH<sub>2<\/sub>)<sub>2<\/sub><sup>+<\/sup>), with a cubic perovskite structure is among the most studied organic\u2013inorganic hybrid perovskites. Despite several reports only on thin films of FA-rich lead iodide perovskites, such as FA<sub>2<\/sub>PbI<sub>4<\/sub>, their structures remain unknown due to challenges in characterizing polycrystalline films. Here, we report two new phases of FA-rich lead iodide perovskite-derived structures, FA<sub>2<\/sub>PbI<sub>4<\/sub> and FA<sub>3<\/sub>PbI<sub>5<\/sub>, in the bulk form. These materials feature two- and one-dimensional octahedral networks of perovskite, respectively, allowing for bandgap tuning among FA\u2013Pb\u2013I compositions. This study presents a novel approach to controlling the structural dimensionality of perovskites and their optical properties.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1021\/jacs.5c17829\">J. Am. Chem. Soc. 2026, in press.<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2026-01-19T12:20:29+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/01\/2280\/\">2026\u5e741\u670819\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2276 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/01\/2276\/\" target=\"_self\" >Publication | Chem. Mater. (Tsuji, Tanaka, Maeda et al.) \u201cSubstituent-Position-Dependent Electrochemical CO2 Reduction Activity of Pb\u2013S-Based Coordination Polymers\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Substituent-Position-Dependent Electrochemical CO<sub>2<\/sub> Reduction Activity of Pb\u2013S-Based Coordination Polymers<\/p>\n<p>Shunta Iwamoto, Ryohei Akiyoshi, Sora Nakasone, Chomponoot Suppaso, Megumi Okazaki, Kazuhide Kamiya, Yuta Tsuji,* Daisuke Tanaka,* Kazuhiko Maeda*<\/p>\n<p>Developing electrocatalysts for CO<sub>2<\/sub> reduction is essential for the effective use of renewable energy. Materials containing molecules such as coordination polymers have strong potential to exhibit high activity and selectivity. However, a critical shortcoming is that they often decompose into metals or metal oxides during reactions, thereby preventing the manifestation of functions unique to molecular structures. In this study, we compare a series of Pb\u2013S-based coordination polymers, [Pb(<i>x<\/i>-SPhOMe)<sub>2<\/sub>]<sub><i>n<\/i><\/sub> (HSPhOMe = methoxybenzenethiol, <i>x<\/i> = <i>ortho<\/i> (KGF-32), <i>meta<\/i> (KGF-33), and <i>para<\/i> (KGF-34)), as model electrocatalysts to investigate the design guidelines. They have different crystal structures in terms of dimensionality and coordination environment. Among them, KGF-32 shows the highest Faradaic efficiency for formate production: 96.6 \u00b1 2.9% at \u22121.0 V vs RHE with a partial current density of \u22129.76 \u00b1 2.1 mA cm<sup>\u20132<\/sup>. By contrast, KGF-33 and -34 show lower Faradaic efficiencies for formate production, along with more pronounced decomposition to PbCO<sub>3<\/sub>. We use scanning electron microscopy, X-ray diffraction, and Raman spectroscopy to confirm that KGF-32 retains much of its crystal structure during operation, whereas KGF-33 and -34 decompose extensively. In addition, density functional theory calculations reveal that the energy barrier for formate production on KGF-32 is lower than that on PbCO<sub>3<\/sub>, which explains its superior catalytic activity. Our work demonstrates the inherent advantages of coordination-polymer-based electrocatalysts and provides valuable guidelines for designing more efficient and stable systems for CO<sub>2<\/sub> reduction.<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1021\/acs.chemmater.5c03173\">Chem. Mater. 2026, in press.<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2026-01-19T12:18:05+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2026\/01\/2276\/\">2026\u5e741\u670819\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2253 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/12\/2253\/\" target=\"_self\" >Publication | ACS Catal. (Maeda, Onda et al.) \u201cCharge Transfer Dynamics in Dye-Sensitized Photocatalysts Using Metal Complex Sensitizers with Long-Wavelength Visible Light Absorption Based on Singlet\u2013Triplet Excitation\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Charge Transfer Dynamics in Dye-Sensitized Photocatalysts Using Metal Complex Sensitizers with Long-Wavelength Visible Light Absorption Based on Singlet\u2013Triplet Excitation<\/p>\n<p>Haruka Yamamoto, Toshiya Tanaka, Masahito Oura, Kelly M. Kopera, Megumi Okazaki, Ken Onda, Thomas E. Mallouk,* Kazuhiko Maeda*<\/p>\n<p>An Os(II) polypyridyl complex was applied as a photosensitizer in dye-sensitized photocatalyst systems based on Pt-intercalated HCa<sub>2<\/sub>Nb<sub>3<\/sub>O<sub>10<\/sub> and Pt-loaded TiO<sub>2<\/sub>. The Os(II) complex exhibits a spin-forbidden but partially allowed triplet metal-to-ligand charge transfer (<sup>3<\/sup>MLCT) transition, enabling broad visible light absorption up to 800 nm, which surpasses that of conventional Ru(II)-based dyes. Despite its shorter excited-state lifetime compared to Ru(II) complexes, efficient electron injection from the excited Os(II) dye into the semiconductor was confirmed. Under visible-light irradiation, the Os(II)-sensitized photocatalysts showed higher H<sub>2<\/sub> evolution activity than the Ru(II)-sensitized photocatalysts when sodium ascorbate was used as an electron donor, demonstrating effective utilization of long-wavelength visible light. In contrast, negligible H<sub>2<\/sub> evolution was observed when NaI was employed as a redox mediator for Z-scheme water splitting. Transient absorption spectroscopy revealed that the lack of activity stemmed from inefficient electron transfer from I<sup>\u2013<\/sup> to oxidized Os(II). These findings highlight the importance of selecting appropriate redox mediators to fully exploit long-wavelength dyes for overall water splitting under visible light.<\/p>\n<p><a href=\"https:\/\/pubs.acs.org\/doi\/full\/10.1021\/acscatal.5c06687\">ACS Catal. 2025, in press.<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2025-12-06T12:24:35+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/12\/2253\/\">2025\u5e7412\u67086\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2238 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/12\/2238\/\" target=\"_self\" >Symposium in Pacifichem 2025, 12\/17 (Wed)<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Pacifichem 2025<\/p>\n<p>~Inorganic Materials with Multiple Components for Energy and Environmental Applications\uff08ING016\uff09~<\/p>\n<p>12\/17 (Wed), 2025<\/p>\n<p>Hilton Hawaiian Village<\/p>\n<p>Organizers: Ryo Ohtani, Jeongsuk Seo, Lianzhou Wang,\u00a0Kazuhiko Maeda<\/p>\n<p>&nbsp;<\/p>\n<p>Program:<\/p>\n<p>8:00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ~Opening Remarks~<\/p>\n<p>8:05\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Solution Chemistry Engineering for Efficient Kesterite Solar Cells and Modules<\/p>\n<p>Xin, Hao (Nanjing University of Posts and Telecommunications)<\/p>\n<p>8:30\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Design and synthesis of novel nanostructured electrocatalysts for CO<sub>2<\/sub> reduction<\/p>\n<p>KOBAYASHI, Hirokazu (Kyushu University)<\/p>\n<p>8:45\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u201cReaction potential\u201d in metal oxide nanoparticles for water oxidation measured by condition-controlled photochemical reactions<\/p>\n<p>Okazaki, Megumi\u00a0\u00a0 (Institute of Science Tokyo)<\/p>\n<p>9:10\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Development of Highly Selective Nanocatalysts for CO<sub>2<\/sub> Upcycling<\/p>\n<p>Huang, Jun (The University of Sydney)<\/p>\n<p>9:25\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Effect of hydrophobization in Zr-MOFs for photosynthesis of hydrogen peroxide<\/p>\n<p>Kondo, Yoshifumi (The University of Osaka)<\/p>\n<p>9:40-9:55 ~break~<\/p>\n<p>9:55\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Molecular Anions as a Key to Emerging Properties in Mixed-Anion Compounds<\/p>\n<p>Kageyama, Hiroshi (Kyoto University)<\/p>\n<p>10:20\u00a0\u00a0\u00a0\u00a0\u00a0 Mitigating Charge Recombination in BaTaO<sub>2<\/sub>N through ZnO Electron Transfer Layer Integration<\/p>\n<p>Salmanion, Mahya (University of California Davis)<\/p>\n<p>10:35\u00a0\u00a0\u00a0\u00a0\u00a0 Synthesis and physical properties of new layered mixed-anion compounds with a copper chalcogenide layer<\/p>\n<p>Ogino, Hiraku (The National Institute of Advanced Industrial Science and Technology)<\/p>\n<p>10:50\u00a0\u00a0\u00a0\u00a0\u00a0 Perovskite oxynitrides prepared from layered perovskites for efficient solar-driven seawater splitting<\/p>\n<p>Seo, Jeongsuk (Chonnam National University)<\/p>\n<p>11:15\u00a0\u00a0\u00a0\u00a0\u00a0 Heterostructured Bismuth Oxyhalides Photocatalysts for the Degradation of Halogenated Organic Contaminants<\/p>\n<p>Zahran, Elsayed (Ball State University College of Sciences and Humanities)<\/p>\n<p>11:30\u00a0\u00a0\u00a0\u00a0\u00a0 Design of Layered Fluorosulfide for F\u2212 Conductors<\/p>\n<p>Zhong, Chengchao (Ritsumeikan university)<\/p>\n<p>&nbsp;<\/p>\n<p>11:45-13:00\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ~lunch~<\/p>\n<p>&nbsp;<\/p>\n<p>13:00\u00a0 \u00a0 \u00a0 Iron-complex-based catalytic system for high-performance water oxidation in aqueous media<\/p>\n<p>Kondo, Mio (Institute of Science Tokyo)<\/p>\n<p>13:25\u00a0\u00a0\u00a0\u00a0\u00a0 Computational Insights into Coordination Polymer Photocatalysis<\/p>\n<p>Tsuji, Yuta (Kyushu University)<\/p>\n<p>13:40\u00a0\u00a0\u00a0\u00a0\u00a0 Single-site coordination polymer catalysts for electrochemical CO2 conversion<\/p>\n<p>Li, Fengwang (The University of Sydney)<\/p>\n<p>13:55\u00a0\u00a0\u00a0\u00a0\u00a0 Meltable semiconducting lead\u2013thiolate coordination polymers with long alkyl chains<\/p>\n<p>Akiyoshi, Ryohei\u00a0\u00a0\u00a0 (Kwansei Gakuin University)<\/p>\n<p>14:20\u00a0\u00a0\u00a0\u00a0\u00a0 Flexible Organic-Inorganic Hybrid Crystals of Tin(IV) Chloride and Naphthalenediimide: Exploring Elasticity, Mechanochromism, and Photothermal Conversion<\/p>\n<p>Kusumoto, Sotaro\u00a0\u00a0 (Kanagawa university)<\/p>\n<p>14:35\u00a0\u00a0\u00a0\u00a0\u00a0 Stepwise synthesis of microporous \u03b1-MoO<sub>3<\/sub> with a broad (100) surface via one-dimensional Mo<sub>2<\/sub>O<sub>6<\/sub>{(CH<sub>3<\/sub>)<sub>2<\/sub>NCHO} supra-ceramics<\/p>\n<p>Minato, Takuo (Hiroshima university)<\/p>\n<p>14:50-15:05\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ~break~<\/p>\n<p>15:05\u00a0\u00a0\u00a0\u00a0\u00a0 Correlation of charge carrier dynamics of lead halide perovskite with their solar cell performance<\/p>\n<p>Tachibana, Yasuhiro (RMIT University)<\/p>\n<p>15:30\u00a0\u00a0\u00a0\u00a0\u00a0 The Way to Make Different Zintl Phase Thermoelectric Materials Using Tetrahedral Building Blocks<\/p>\n<p>You, Tae-Soo (Chungbuk National University)<\/p>\n<p>15:45\u00a0\u00a0\u00a0\u00a0\u00a0 High-temperature TPD up to 2100 \u00b0C for nitrogen speciation in carbon and oxide materials<\/p>\n<p>Yoshii, Takeharu\u00a0\u00a0\u00a0 (Tohoku university)<\/p>\n<p>16:00\u00a0\u00a0\u00a0\u00a0\u00a0 Emerging 2D Materials of Carbon Nitrides and Xenes<\/p>\n<p>Kim, In Young (Ewha Womans University)<\/p>\n<p>16:25\u00a0\u00a0\u00a0\u00a0\u00a0 White light-emitting copper iodide materials<\/p>\n<p>PERRUCHAS, Sandrine (Institut des Mat\u00e9riaux Jean Rouxel Nantes (IMN))<\/p>\n<p>16:40\u00a0\u00a0\u00a0\u00a0\u00a0 3D-Printed Highly Efficient Ion-Exchange Materials via Microphase Separation<\/p>\n<p>Boyer, Cyrille (UNSW Australia)<\/p>\n<p>16:55\u00a0\u00a0\u00a0\u00a0\u00a0 ~Closing Remarks~<\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2025-12-03T13:01:09+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/12\/2238\/\">2025\u5e7412\u67083\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2175 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/09\/2175\/\" target=\"_self\" >Publication | Inorg. Chem. (Motohashi, Nambu, Kimoto, Sugimoto, Inada et al.) \u201cA Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>A Sr-Ga Oxy-Hydroxide with High Thermal Stability: Unraveling Its Characteristic Hydrogen-Bond Network<\/p>\n<p>Yusuke Asai, Yuto Nishihara, Yoko Kokubo, Kenji Arai, Kosaku Ohishi, Satoshi Ogawa, Miwa Saito, Yusuke Nambu, Maxim Avdeev, Koji Kimoto, Zi Lang Goo, Kunihisa Sugimoto, Miki Inada, Katsuro Hayashi, Teruki Motohashi<\/p>\n<p>Oxy-hydroxides represent potential proton carriers for solid acid catalysts and proton conductors owing to their hydroxide-rich compositions. However, their applications in high-temperature environments are limited due to thermal instability associated with dehydration at moderate to high temperatures. Therefore, the development of oxy-hydroxides with enhanced thermal stability is of critical importance. Herein, we report the discovery of a strontium\u2013gallium oxy-hydroxide, Sr2Ga3O6(OH), with exceptional thermal stability. The Sr\u2013Ga oxy-hydroxide was successfully synthesized via an unconventional synthesis route, \u201cvapor hydroxidation\u201d, involving high-temperature heat treatment in highly concentrated water vapor. Structural characterization employing X-ray diffraction, neutron diffraction, and transmission electron microscopy revealed that the Sr\u2013Ga oxy-hydroxide crystallizes in a trigonal structure (R3\u0305 space group) with lattice parameters a = 18.1904(2) \u00c5 and c = 7.2693(1) \u00c5. Notably, OH\u2013 anions are nonuniformly distributed within the crystal structure and are confined to a narrow space between two strontium sites. Thermogravimetry combined with desorption gas analysis indicated that OH\u2013 anions are retained in the crystal structure up to approximately 850 \u00b0C. In situ infrared spectroscopy upon heating demonstrated proton redistribution via multilinked hydrogen bonds at elevated temperatures, which likely contributes to the excellent thermal stability.<\/p>\n<p><a href=\" https:\/\/doi.org\/10.1021\/acs.inorgchem.5c02586\"><br \/>\n<em>Inorg. Chem. <\/em> 2025, 64, 36, 18294-18303. (DOI: 10.1039\/ acs.inorgchem.5c02586)<br \/>\n<\/a><\/p>\n<p><a href=\"https:\/\/www.kanagawa-u.ac.jp\/news\/details_29491.html\">\u30d7\u30ec\u30b9\u30ea\u30ea\u30fc\u30b9\uff08\u795e\u5948\u5ddd\u5927\u5b66\uff09<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2025-09-26T09:00:38+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/09\/2175\/\">2025\u5e749\u670826\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><li class=\"wp-block-post post-2110 post type-post status-publish format-standard hentry category-news en-US\">\n<h2 style=\"font-size:64px;line-height:1.2;\" class=\"wp-block-post-title\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/07\/2110\/\" target=\"_self\" >Publication | Chem. Commun. (Kusumoto, Tsuji et al.) \u201cFerromagnetic and Plastically Deformable Organic-Inorganic Hybrid Crystal: (C\u2087H\u2089NH\u2083)\u2082CuCl\u2084\u201d<\/a><\/h2>\n\n\n\n<div class=\"entry-content wp-block-post-content is-layout-flow wp-block-post-content-is-layout-flow\"><p>Ferromagnetic and Plastically Deformable Organic-Inorganic Hybrid Crystal: (C\u2087H\u2089NH\u2083)\u2082CuCl\u2084 <\/p>\n<p>S. Kusumoto, S. Nagasawa, R. Suzuki, M. Tachibana, Y. Tsuji, H. Zenno, Y. Nakashima, S. Hayami, Y. Kim, Y. Koide<\/p>\n<p>We report a plastically deformable organic\u2013inorganic hybrid crystal, (C7H9NH3)2CuCl4, exhibiting ferromagnetism below 8 K. Its 2D layered structure enables stress-induced plastic bending via van der Waals slip between alkyl chains. Nanoindentation reveals exceptional mechanical compliance, and magnetic studies confirm long-range ordering. This represents the first known example of a ferromagnetic crystal with plastic deformability.<\/p>\n<p><\/a><br \/>\n<a href=\" https:\/\/pubs.rsc.org\/en\/content\/articlelanding\/2025\/cc\/d5cc02170g\"><br \/>\n<em> Chem. Commun.<\/em>, 61, 10303-10306 (2025). (DOI: 10.1039\/D5CC02170G)<br \/>\n<\/a><\/p>\n<\/div>\n\n\n<div class=\"wp-block-group is-layout-flex wp-block-group-is-layout-flex\"><div style=\"font-size:16px;\" class=\"wp-block-post-date\"><time datetime=\"2025-07-29T16:33:24+09:00\"><a href=\"https:\/\/supraceramics.jp\/en\/2025\/07\/2110\/\">2025\u5e747\u670829\u65e5<\/a><\/time><\/div>\n\n<div style=\"font-size:16px\" class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/supraceramics.jp\/en\/category\/news\/\" rel=\"tag\">News<\/a><\/div>\n\n<\/div>\n\n\n\n<div style=\"height:120px;\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n<\/li><\/ul>\n\n<nav class=\"wp-block-query-pagination is-layout-flex wp-block-query-pagination-is-layout-flex\" aria-label=\"Pagination\">\n<div class=\"wp-block-query-pagination\">\n\n<a href=\"\/en\/wp-json\/wp\/v2\/pages\/236?query-8-page=2\" class=\"wp-block-query-pagination-next\">Next Page<\/a><\/div>\n<\/nav><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":222414606,"featured_media":0,"parent":0,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_themeisle_gutenberg_block_has_review":false,"_locale":"en_US","_original_post":"https:\/\/supraceramics.jp\/home\/"},"class_list":["post-236","page","type-page","status-publish","hentry","en-US"],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":false,"jetpack_shortlink":"https:\/\/wp.me\/Pe2JgX-3O","jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/pages\/236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/users\/222414606"}],"replies":[{"embeddable":true,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/comments?post=236"}],"version-history":[{"count":2,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/pages\/236\/revisions"}],"predecessor-version":[{"id":238,"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/pages\/236\/revisions\/238"}],"wp:attachment":[{"href":"https:\/\/supraceramics.jp\/wp-json\/wp\/v2\/media?parent=236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}