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Xin X, Zou H, Du S, Bao Y, Zhang F. Visible-Light Harvesting SrTiO 3 Solid Solutions for Photocatalytic Hydrogen Evolution from Water. CHEMSUSCHEM 2024; 17:e202400533. [PMID: 38736302 DOI: 10.1002/cssc.202400533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/17/2024] [Accepted: 05/10/2024] [Indexed: 05/14/2024]
Abstract
The fabrication of solid solutions represents a compelling approach to modulating the physicochemical properties of materials. In this study, we achieved the successful synthesis of solid solutions comprising SrTiO3 and SrTaO2N (denoted as (SrTiO3)1-x-(SrTaO2N)x, 0≤x≤1) using the magnesium powder-assisted nitridation method. The absorption edge of (SrTiO3)1-x-(SrTaO2N)x is tunable from 500 to 600 nm. The conduction band minimum (CBM) of (SrTiO3)1-x-(SrTaO2N)x comprises the Ti 3d orbitals and the Ta 5d orbitals, while the valence band maximum (VBM) consists of the O 2p and N 2p orbitals. The microstructure of the (SrTiO3)1-x-(SrTaO2N)x consists of small nanoparticles, exhibiting a larger specific surface area than the parent compounds of SrTiO3 and SrTaO2N. In the photocatalytic hydrogen evolution reaction (HER) with sacrificial reagents, the activity of solid solutions is notably superior to that of nitrogen-doped SrTiO3 and SrTaO2N. This superiority is mainly attributed to its broad light absorption range and high charge separation efficiency, which indicates its potential as a promising photocatalytic material. Moreover, the magnesium powder-assisted nitridation method exhibits obvious advantages for the synthesis of oxynitrides and bears instructional significance for the synthesis of other nitrogen-containing compounds and even sulfur-containing compounds.
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Affiliation(s)
- Xueshang Xin
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physic, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hai Zou
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physic, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shiwen Du
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physic, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yunfeng Bao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physic, Chinese Academy of Sciences, Dalian, 116023, China
| | - Fuxiang Zhang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physic, Chinese Academy of Sciences, Dalian, 116023, China
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Wang S, Teramura K, Hisatomi T, Domen K, Asakura H, Hosokawa S, Tanaka T. Optimized Synthesis of Ag‐Modified Al‐Doped SrTiO
3
Photocatalyst for the Conversion of CO
2
Using H
2
O as an Electron Donor. ChemistrySelect 2020. [DOI: 10.1002/slct.202001693] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shuying Wang
- Department of Molecular EngineeringGraduate School of EngineeringKyoto University Kyotodaigaku Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kentaro Teramura
- Department of Molecular EngineeringGraduate School of EngineeringKyoto University Kyotodaigaku Katsura, Nishikyo-ku Kyoto 615-8510 Japan
- Element Strategy Initiative for Catalysts & Batteries (ESICB)KyotoUniversity 1-30 Goryo-Ohara, Nishikyo-ku Kyoto 615-8245 Japan
| | - Takashi Hisatomi
- Research Initiative for Supra-MaterialsShinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Kazunari Domen
- Research Initiative for Supra-MaterialsShinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-8656 Japan
| | - Hiroyuki Asakura
- Department of Molecular EngineeringGraduate School of EngineeringKyoto University Kyotodaigaku Katsura, Nishikyo-ku Kyoto 615-8510 Japan
- Element Strategy Initiative for Catalysts & Batteries (ESICB)KyotoUniversity 1-30 Goryo-Ohara, Nishikyo-ku Kyoto 615-8245 Japan
| | - Saburo Hosokawa
- Department of Molecular EngineeringGraduate School of EngineeringKyoto University Kyotodaigaku Katsura, Nishikyo-ku Kyoto 615-8510 Japan
- Element Strategy Initiative for Catalysts & Batteries (ESICB)KyotoUniversity 1-30 Goryo-Ohara, Nishikyo-ku Kyoto 615-8245 Japan
| | - Tsunehiro Tanaka
- Department of Molecular EngineeringGraduate School of EngineeringKyoto University Kyotodaigaku Katsura, Nishikyo-ku Kyoto 615-8510 Japan
- Element Strategy Initiative for Catalysts & Batteries (ESICB)KyotoUniversity 1-30 Goryo-Ohara, Nishikyo-ku Kyoto 615-8245 Japan
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Tanaka H, Uchiyama T, Kawakami N, Okazaki M, Uchimoto Y, Maeda K. Water Oxidation through Interfacial Electron Transfer by Visible Light Using Cobalt-Modified Rutile Titania Thin-Film Photoanode. ACS APPLIED MATERIALS & INTERFACES 2020; 12:9219-9225. [PMID: 32000493 DOI: 10.1021/acsami.9b20793] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
TiO2 is a good photoanode material for water oxidation to form O2; however, UV light (λ < 400 nm) is necessary for this system to operate. In this work, cobalt species were introduced onto a rutile TiO2 thin film grown on a fluorine-doped tin oxide (FTO) substrate for visible-light activation of TiO2 and to construct water oxidation sites. TiO2 thin films were prepared on the FTO surface by the thermohydrolysis of TiCl4, followed by annealing at 723 K in air; the loading of the cobalt species was achieved simply by immersing TiO2/FTO into an aqueous Co(NO3)2 solution at room temperature, followed by heating at 423 K in air. Physicochemical analyses revealed that the cobalt species deposited on the TiO2 film was α-Co3(OH)4(NO3)2 and that the cobalt-modified TiO2 thin-film electrode had a visible-light absorption band that extended to 700 nm due to interfacial electron transitions from the cobalt species to the conduction band of TiO2. Upon anodic polarization in the presence of visible light, the cobalt-modified TiO2 thin-film electrode generated an anodic photocurrent with an onset potential of +0.1 V vs RHE, which was consistent with that of pristine rutile TiO2. Product analysis during the controlled potential photoelectrolysis in the presence of an applied bias smaller than 1.23 V under visible light showed that water oxidation to O2 occurred on the cobalt-modified TiO2/FTO. This study demonstrates that a visible-light-driven photoelectrochemical cell for water oxidation can be constructed through the use of earth-abundant metals without the need for a complicated preparation procedure.
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Affiliation(s)
- Hideyuki Tanaka
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1-NE-2 Ookayama , Meguro-ku, Tokyo 152-8550 , Japan
| | - Tomoki Uchiyama
- Graduate School of Human and Environmental Studies , Kyoto University , Nihonmatsu-cho, Yoshida , Sakyo-ku, Kyoto 606-8317 , Japan
| | - Nozomi Kawakami
- Graduate School of Human and Environmental Studies , Kyoto University , Nihonmatsu-cho, Yoshida , Sakyo-ku, Kyoto 606-8317 , Japan
| | - Megumi Okazaki
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1-NE-2 Ookayama , Meguro-ku, Tokyo 152-8550 , Japan
- Japan Society for the Promotion of Science , Kojimachi Business Center Building, 5-3-1 Kojimachi , Chiyoda-ku, Tokyo 102-0083 , Japan
| | - Yoshiharu Uchimoto
- Graduate School of Human and Environmental Studies , Kyoto University , Nihonmatsu-cho, Yoshida , Sakyo-ku, Kyoto 606-8317 , Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science , Tokyo Institute of Technology , 2-12-1-NE-2 Ookayama , Meguro-ku, Tokyo 152-8550 , Japan
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Maeda K, Mallouk TE. Two-Dimensional Metal Oxide Nanosheets as Building Blocks for Artificial Photosynthetic Assemblies. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20180258] [Citation(s) in RCA: 144] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Thomas E. Mallouk
- Departments of Chemistry, Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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Miyoshi A, Nishioka S, Maeda K. Water Splitting on Rutile TiO 2 -Based Photocatalysts. Chemistry 2018; 24:18204-18219. [PMID: 29570871 DOI: 10.1002/chem.201800799] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Indexed: 11/07/2022]
Abstract
Water splitting using a semiconductor photocatalyst with sunlight has long been viewed as a potential means of large-scale H2 production from renewable resources. Different from anatase TiO2 , rutile enables preferential water oxidation, which is useful for the construction of a Z-scheme water-splitting system. The combination of rutile TiO2 with a suitable H2 -evolution photocatalyst such as a Pt-loaded BaZrO3 -BaTaO2 N solid solution enables solar-driven water splitting into H2 and O2 . While rutile TiO2 is a wide-gap semiconductor with a bandgap of 3.0 eV, co-doping of rutile TiO2 with certain metal ions and/or nitrogen produces visible-light-driven photocatalysts, which are also useful as a component for water oxidation in visible-light-driven Z-scheme water splitting. The key to achieving highly efficient water oxidation is to maintain a charge balance of dopants in the rutile, because single doping typically produces trap states that capture photogenerated electrons and/or holes. Here we provide a concise summary of rutile TiO2 -based photocatalysts for water-splitting systems.
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Affiliation(s)
- Akinobu Miyoshi
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Shunta Nishioka
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan
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Ishimaki K, Uchiyama T, Okazaki M, Lu D, Uchimoto Y, Maeda K. Influence of TiO2 Support on Activity of Co3O4/TiO2 Photocatalysts for Visible-Light Water Oxidation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170373] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Koki Ishimaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Tomoki Uchiyama
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Megumi Okazaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Daling Lu
- Suzukakedai Materials Analysis Division, Technical Department, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Yoshiharu Uchimoto
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
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