Osamu Tomita
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View article: Doubling Charge Transport in Z‐Scheme Water Splitting: Di‐Vanadium‐Substituted Polyoxometalate as Shuttle Redox Mediator for Boosting Visible‐Light‐Induced Water Splitting (Adv. Funct. Mater. 44/2025)
Doubling Charge Transport in Z‐Scheme Water Splitting: Di‐Vanadium‐Substituted Polyoxometalate as Shuttle Redox Mediator for Boosting Visible‐Light‐Induced Water Splitting (Adv. Funct. Mater. 44/2025) Open
View article: Strong impacts of inter-π-chain charge transfer accelerating CO2 reduction photocatalysis of carbazole–diimine-based linear conjugated polymer/Ru complex hybrids
Strong impacts of inter-π-chain charge transfer accelerating CO2 reduction photocatalysis of carbazole–diimine-based linear conjugated polymer/Ru complex hybrids Open
Conjugated polymers are promising candidates for photocatalyst materials owing to the molecular design flexibility in tuning their properties, including visible light responsiveness. The rational introduction of a molecular metal complex a…
View article: Phase-migrating Z-scheme charge transportation enables photoredox catalysis harnessing water as an electron source
Phase-migrating Z-scheme charge transportation enables photoredox catalysis harnessing water as an electron source Open
Z-schematic photocatalytic reactions are of considerable interest because of their potential for application to reductive molecular conversions into value-added chemicals using water as an electron source. However, most demonstrations of Z…
View article: Vanadium-based oxyhalide photocatalysts for visible-light-driven Z-scheme water splitting: advancing conduction band engineering
Vanadium-based oxyhalide photocatalysts for visible-light-driven Z-scheme water splitting: advancing conduction band engineering Open
This study demonstrates the potential of V-based oxyhalides as oxygen-evolving photocatalysts in Z-scheme water-splitting systems.
View article: Strong impacts of inter-π-chain charge transfer accelerating CO <sub>2</sub> reduction photocatalysis of carbazole–diimine-based linear conjugated polymer/Ru complex hybrids
Strong impacts of inter-π-chain charge transfer accelerating CO <sub>2</sub> reduction photocatalysis of carbazole–diimine-based linear conjugated polymer/Ru complex hybrids Open
Manipulation of photoexcited charge transportation via modulation of polymer structures significantly improved the photocatalytic performance of metal complex/conjugated polymer hybrids for CO 2 reduction.
View article: Interlayer-active layered oxysulfides NaMTiO<sub>2.2</sub>S<sub>1.8</sub> (M = Nd, Sm) with an <i>n</i> = 1 Ruddlesden–Popper structure acting as photocatalysts for visible light water splitting
Interlayer-active layered oxysulfides NaMTiO<sub>2.2</sub>S<sub>1.8</sub> (M = Nd, Sm) with an <i>n</i> = 1 Ruddlesden–Popper structure acting as photocatalysts for visible light water splitting Open
We report novel Ruddlesden–Popper ( n = 1) oxysulfides, NaMTiO 2.2 S 1.8 (M = Nd, Sm), the first oxysulfides exhibiting “interlayer-active” behavior, featuring ion exchange, interlayer hydration, and potential for overall photocatalytic wa…
View article: Spontaneous adsorption of iridium chloride complex on oxychloride photocatalysts provides efficient and durable reaction site for water oxidation
Spontaneous adsorption of iridium chloride complex on oxychloride photocatalysts provides efficient and durable reaction site for water oxidation Open
Visible-light-driven O 2 evolution on oxychloride photocatalysts was significantly enhanced by stirring in an aqueous solution containing IrCl 6 3− in the dark.
View article: CSD 2325926: Experimental Crystal Structure Determination
CSD 2325926: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Internal strain-driven bond manipulation and band engineering in Bi<sub>2−<i>x</i></sub>Sb<sub><i>x</i></sub>YO<sub>4</sub>Cl photocatalysts with triple fluorite layers
Internal strain-driven bond manipulation and band engineering in Bi<sub>2−<i>x</i></sub>Sb<sub><i>x</i></sub>YO<sub>4</sub>Cl photocatalysts with triple fluorite layers Open
Internal strain within the triple fluorite layer of Bi 2− x Sb x YO 4 Cl explains bond breaking and allows bandgap engineering.
View article: Surface Modification with Metal Hexacyanoferrates for Expanding the Choice of H<sub>2</sub>‐Evolving Photocatalysts for Both Fe<sup>3+</sup>/Fe<sup>2+</sup> Redox‐Mediated and Interparticle Z‐Scheme Water‐Splitting Systems
Surface Modification with Metal Hexacyanoferrates for Expanding the Choice of H<sub>2</sub>‐Evolving Photocatalysts for Both Fe<sup>3+</sup>/Fe<sup>2+</sup> Redox‐Mediated and Interparticle Z‐Scheme Water‐Splitting Systems Open
H2-Evolving Photocatalysts In article number 2300431, Abe and co-workers show that surface modification with metal hexacyanoferrates enables visible light responsive semiconductors such as TaON to function as efficient H2 evolution photoca…
View article: Surface Modification with Metal Hexacyanoferrates for Expanding the Choice of H<sub>2</sub>‐Evolving Photocatalysts for Both Fe<sup>3+</sup>/Fe<sup>2+</sup> Redox‐Mediated and Interparticle Z‐Scheme Water‐Splitting Systems
Surface Modification with Metal Hexacyanoferrates for Expanding the Choice of H<sub>2</sub>‐Evolving Photocatalysts for Both Fe<sup>3+</sup>/Fe<sup>2+</sup> Redox‐Mediated and Interparticle Z‐Scheme Water‐Splitting Systems Open
The construction of Z‐scheme water splitting systems is an effective approach toward harvesting a wide portion of the solar light spectrum; however, the success has often depended on the property of photocatalyst surfaces. This drawback is…
View article: Importance of Electron Mediator Transparency: Photocatalytic Hydrogen Production from Polyoxometalate using Dye‐double‐layered Photocatalysts
Importance of Electron Mediator Transparency: Photocatalytic Hydrogen Production from Polyoxometalate using Dye‐double‐layered Photocatalysts Open
One‐directional electron transfer is crucial for two‐step photoexcitation (Z‐scheme) water‐splitting photocatalysis. We investigated the hydrogen evolution activity of PS‐double‐layered photocatalysts ( X‐DSP , X‐ RuCP 6 ‐Zr‐ RuP 6 @Pt/K x…
View article: Sn2+-Based Pyrochlore Oxysulfides with Narrow Band Gaps for Photocatalytic Water Splitting
Sn2+-Based Pyrochlore Oxysulfides with Narrow Band Gaps for Photocatalytic Water Splitting Open
View article: An unexplored role of the CrO<sub><i>x</i></sub> shell in an elaborated Rh/CrO<sub><i>x</i></sub> core–shell cocatalyst for photocatalytic water splitting: a selective electron transport pathway from semiconductors to core metals, boosting charge separation and H<sub>2</sub> evolution
An unexplored role of the CrO<sub><i>x</i></sub> shell in an elaborated Rh/CrO<sub><i>x</i></sub> core–shell cocatalyst for photocatalytic water splitting: a selective electron transport pathway from semiconductors to core metals, boosting charge separation and H<sub>2</sub> evolution Open
In a Rh/CrO x core–shell cocatalyst for water-splitting photocatalysts, CrO x serves as an electron pathway, transfers the photoexcited electrons from photocatalysts to Rh (reduction site), and improves the H 2 evolution activity.
View article: A Sillén oxyhalide SrBi<sub>3</sub>O<sub>4</sub>Cl<sub>3</sub> as a promising photocatalyst for water splitting: impact of the asymmetric structure on light absorption and charge carrier dynamics
A Sillén oxyhalide SrBi<sub>3</sub>O<sub>4</sub>Cl<sub>3</sub> as a promising photocatalyst for water splitting: impact of the asymmetric structure on light absorption and charge carrier dynamics Open
We report a Sillén-type layered oxyhalide SrBi 3 O 4 Cl 3 with asymmetric structure as a photocatalyst for visible-light-induced water splitting, due to the Bi–Bi interaction across the single halogen layer and the electrostatic destabiliz…
View article: CSD 2154053: Experimental Crystal Structure Determination
CSD 2154053: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Polyoxocationic antimony oxide cluster with acidic protons
Polyoxocationic antimony oxide cluster with acidic protons Open
The success and continued expansion of research on metal-oxo clusters owe largely to their structural richness and wide range of functions. However, while most of them known to date are negatively charged polyoxometalates, there is only a …
View article: Manipulation of charge carrier flow in Bi<sub>4</sub>NbO<sub>8</sub>Cl nanoplate photocatalyst with metal loading
Manipulation of charge carrier flow in Bi<sub>4</sub>NbO<sub>8</sub>Cl nanoplate photocatalyst with metal loading Open
An efficient spatial separation of photoexcited carriers is demonstrated in a layered-oxyhalide nanoplate by controlling the direction of carrier flows upon Rh cocatalyst loading, which leads to drastic photocatalytic H 2 evolution activit…
View article: Developments and Trends of the Photocatalyst ～Environmental Purification
Developments and Trends of the Photocatalyst ～Environmental Purification Open
1．はじめに
View article: Enhanced H<sub>2</sub> Evolution on ZnIn<sub>2</sub>S<sub>4</sub> Photocatalyst under Visible Light by Surface Modification with Metal Cyanoferrates
Enhanced H<sub>2</sub> Evolution on ZnIn<sub>2</sub>S<sub>4</sub> Photocatalyst under Visible Light by Surface Modification with Metal Cyanoferrates Open
The surface modification with zinc or indium cyanoferrate species was revealed to significantly increase the rate of H2 evolution on Pt-loaded ZnIn2S4 photocatalyst under visible light in the presence of [Fe(CN)6]4− as an electron donor ba…
View article: Mimicking Natural Photosynthesis: Solar to Renewable H<sub>2</sub> Fuel Synthesis by Z-Scheme Water Splitting Systems
Mimicking Natural Photosynthesis: Solar to Renewable H<sub>2</sub> Fuel Synthesis by Z-Scheme Water Splitting Systems Open
Visible light-driven water splitting using cheap and robust photocatalysts is one of the most exciting ways to produce clean and renewable energy for future generations. Cutting edge research within the field focuses on so-called "Z-scheme…
View article: Sillén–Aurivillius-related Oxychloride Bi<sub>6</sub>NbWO<sub>14</sub>Cl as a Stable O<sub>2</sub>-evolving Photocatalyst in Z-scheme Water Splitting under Visible Light
Sillén–Aurivillius-related Oxychloride Bi<sub>6</sub>NbWO<sub>14</sub>Cl as a Stable O<sub>2</sub>-evolving Photocatalyst in Z-scheme Water Splitting under Visible Light Open
Following the recent discovery of a Sillen–Aurivillius perovskite Bi4NbO8Cl with a stable photocatalytic activity for water oxidation under visible light, we studied a structurally related intergrowth compound Bi6NbWO14Cl. It also works as…
View article: Improved Photocatalytic Water Oxidation with Fe<sup>3+</sup>/Fe<sup>2+</sup> Redox on Rectangular-shaped WO<sub>3</sub> Particles with Specifically Exposed Crystal Faces via Hydrothermal Synthesis
Improved Photocatalytic Water Oxidation with Fe<sup>3+</sup>/Fe<sup>2+</sup> Redox on Rectangular-shaped WO<sub>3</sub> Particles with Specifically Exposed Crystal Faces via Hydrothermal Synthesis Open
Rectangular WO3 particles with selectively exposed faces were prepared via hydrothermal reaction and employed as O2-evolving photocatalyst in the presence of Fe3+ electron acceptor. The prepared WO3 photocatalyst showed a higher rate and s…
View article: Fabrication of cation-doped BaTaO<sub>2</sub>N photoanodes for efficient photoelectrochemical water splitting under visible light irradiation
Fabrication of cation-doped BaTaO<sub>2</sub>N photoanodes for efficient photoelectrochemical water splitting under visible light irradiation Open
A series of cation-doped BaTaO2N particle was synthesized to control the donor density in the bulk for improving the performance of photoelectrochemical water splitting on porous BaTaO2N photoanodes under visible light. Among the dopants (…