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Higashi T, Domen K. Interfacial Design of Particulate Photocatalyst Materials for Green Hydrogen Production. CHEMSUSCHEM 2024:e202400663. [PMID: 38794839 DOI: 10.1002/cssc.202400663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/20/2024] [Accepted: 05/24/2024] [Indexed: 05/26/2024]
Abstract
Green hydrogen production using particulate photocatalyst materials has attracted much attention in recent years because this process could potentially lead to inexpensive and scalable solar-to-chemical energy conversion systems. Although the development of efficient particulate photocatalysts enabling one-step overall water splitting (OWS) with solar-to-hydrogen efficiencies in excess of 10 % remains challenging, promising photocatalyst candidates exhibiting OWS activity have been demonstrated. This review provides a comprehensive introduction to the solar-to-hydrogen energy conversion process of semiconductor photocatalyst materials and highlights recent advances in photocatalytic OWS via both one-step and two-step photoexcitation processes. The review also covers recent developments in the photocatalytic OWS of SrTiO3, including the establishment of large-scale photocatalytic systems, interfacial design using cocatalysts to enhance water splitting activity, and its photoelectrochemical (PEC) properties at the electrified solid/liquid interface. In addition, there is a special focus on visible-light-absorbing oxynitride and oxysulfide particulate photocatalysts with absorption edges near 600 nm. Methods for photocatalyst preparation and surface modification, as well as PEC properties, are also discussed. The semiconductor properties of particulate photocatalysts obtained from photoelectroanalytical evaluations using particulate photoelectrodes are evaluated. This review is intended to provide guidelines for the future development of particulate photocatalysts capable of efficient and stable OWS.
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Affiliation(s)
- Tomohiro Higashi
- Institute for Tenure Track Promotion, University of Miyazaki, 1-1 Gakuen-Kibanadai-Nishi, Miyazaki, 889-2192, Japan
| | - Kazunari Domen
- Office of University Professors, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo, 113-8656, Japan
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, 4-17-1 Wakasato, Nagano, 380-8533, Japan
- Department of Chemistry, Kyung Hee University, Seoul, 130-701, Republic of, Korea
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2
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Kageshima Y, Takano H, Nishizawa M, Takagi F, Kumagai H, Teshima K, Domen K, Nishikiori H. Precise analyses of photoelectrochemical reactions on particulate Zn 0.25Cd 0.75Se photoanodes in nonaqueous electrolytes using Ru bipyridyl complexes as a probe. Chem Sci 2024; 15:6679-6689. [PMID: 38725509 PMCID: PMC11077565 DOI: 10.1039/d4sc00511b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/16/2024] [Indexed: 05/12/2024] Open
Abstract
Recombination of photoexcited carriers at interface states is generally believed to strongly govern the photoelectrochemical (PEC) performance of semiconductors in electrolytes. Sacrificial reagents (e.g., methanol or Na2SO3) are often used to assess the ideal PEC performance of photoanodes in cases of minimised interfacial recombination kinetics as well as accelerated surface reaction kinetics. However, varying the sacrificial reagents in the electrolyte means simultaneously changing the equilibrium potential and the number of electrons required to perform the sacrificial reaction, and thus the thermodynamic and kinetic aspects of the PEC reactions cannot be distinguished. In the present study, we propose an alternative methodology to experimentally evaluate the energy levels of interfacial recombination centres that can reduce PEC performance. We prepare nonaqueous electrolytes containing three different Ru complexes with different bipyridyl ligands; redox reactions of Ru complexes represent one-electron processes with similar charge transfer rates and diffusion coefficients. Therefore, the Ru complexes can serve as a probe to isolate and evaluate only the thermodynamic aspects of PEC reactions. Recombination centres at the interface between a nonaqueous electrolyte and a Zn0.25Cd0.75Se particulate photoanode are elucidated using this method as a model case. The energy level at which photocorrosion proceeds is also determined.
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Affiliation(s)
- Yosuke Kageshima
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Research Initiative for Supra-Materials (RISM), Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Hiroto Takano
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Mika Nishizawa
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Fumiaki Takagi
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Hiromu Kumagai
- Research Center for Advanced Science and Technology, The University of Tokyo 4-6-1 Komaba, Meguro-ku Tokyo 153-8904 Japan
| | - Katsuya Teshima
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Research Initiative for Supra-Materials (RISM), Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
| | - Kazunari Domen
- Research Initiative for Supra-Materials (RISM), Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Office of University Professors, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Hiromasa Nishikiori
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
- Research Initiative for Supra-Materials (RISM), Shinshu University 4-17-1 Wakasato Nagano 380-8553 Japan
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3
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Hojamberdiev M, Vargas R, Zhang F, Teshima K, Lerch M. Perovskite BaTaO 2 N: From Materials Synthesis to Solar Water Splitting. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2305179. [PMID: 37852947 PMCID: PMC10667847 DOI: 10.1002/advs.202305179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/16/2023] [Indexed: 10/20/2023]
Abstract
Barium tantalum oxynitride (BaTaO2 N), as a member of an emerging class of perovskite oxynitrides, is regarded as a promising inorganic material for solar water splitting because of its small band gap, visible light absorption, and suitable band edge potentials for overall water splitting in the absence of an external bias. However, BaTaO2 N still exhibits poor water-splitting performance that is susceptible to its synthetic history, surface states, recombination process, and instability. This review provides a comprehensive summary of previous progress, current advances, existing challenges, and future perspectives of BaTaO2 N for solar water splitting. A particular emphasis is given to highlighting the principles of photoelectrochemical (PEC) water splitting, classic and emerging photocatalysts for oxygen evolution reactions, and the crystal and electronic structures, dielectric, ferroelectric, and piezoelectric properties, synthesis routes, and thin-film fabrication of BaTaO2 N. Various strategies to achieve enhanced water-splitting performance of BaTaO2 N, such as reducing the surface and bulk defect density, engineering the crystal facets, tailoring the particle morphology, size, and porosity, cation doping, creating the solid solutions, forming the heterostructures and heterojunctions, designing the photoelectrochemical cells, and loading suitable cocatalysts are discussed. Also, the avenues for further investigation and the prospects of using BaTaO2 N in solar water splitting are presented.
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Affiliation(s)
- Mirabbos Hojamberdiev
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 13510623BerlinGermany
| | - Ronald Vargas
- Instituto Tecnológico de Chascomús (INTECH) – Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)Universidad Nacional de San Martín (UNSAM)Avenida Intendente Marino, Km 8,2, (B7130IWA)ChascomúsProvincia de Buenos AiresArgentina
- Escuela de Bio y NanotecnologíasUniversidad Nacional de San Martín (UNSAM)Avenida Intendente Marino, Km 8,2, (B7130IWA)ChascomúsProvincia de Buenos AiresArgentina
| | - Fuxiang Zhang
- State Key Laboratory of CatalysisiChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian National Laboratory for Clean EnergyDalian116023P.R. China
| | - Katsuya Teshima
- Department of Materials ChemistryShinshu University4‐17‐1 WakasatoNagano3808553Japan
- Research Initiative for Supra‐MaterialsShinshu University4‐17‐1 WakasatoNagano3808553Japan
| | - Martin Lerch
- Institut für ChemieTechnische Universität BerlinStraße des 17. Juni 13510623BerlinGermany
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4
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Xu C, Wang Y, Guo Q, Wang X. Defect engineering of two-dimensional Nb-based oxynitrides for visible-light-driven water splitting to produce H 2 and O 2. NANOSCALE ADVANCES 2023; 5:3260-3266. [PMID: 37325523 PMCID: PMC10263005 DOI: 10.1039/d2na00915c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/06/2023] [Indexed: 06/17/2023]
Abstract
Two-dimensional (2D) Nb-based oxynitrides are promising visible-light-responsive photocatalysts for the water splitting reaction, but their photocatalytic activity is degraded by the formation of reduced Nb5+ species and O2- vacancies. To understand the influence of nitridation on the formation of crystal defects, this study synthesized a series of Nb-based oxynitrides through the nitridation of LaKNaNb1-xTaxO5 (x = 0, 0.2, 0.4, 0.6, 0.8, 1.0). During nitridation, K and Na species volatilized, which helped transform the exterior of LaKNaNb1-xTaxO5 into a lattice-matched oxynitride shell. Ta inhibited defect formation, yielding Nb-based oxynitrides with a tunable bandgap between 1.77 and 2.12 eV, straddling the H2 and O2 evolution potentials. After loading with Rh and CoOx cocatalysts, these oxynitrides exhibited good photocatalytic activity for H2 and O2 evolution in visible light (650-750 nm). The nitrided LaKNaTaO5 and LaKNaNb0.8Ta0.2O5 delivered the maximum H2 (19.37 μmol h-1) and O2 (22.81 μmol h-1) evolution rates, respectively. This work provides a strategy for preparing oxynitrides with low defect densities and demonstrates the promising performance of Nb-based oxynitrides for water splitting.
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Affiliation(s)
- Chang Xu
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences Shenzhen 518055 China
| | - Yan Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences Shenzhen 518055 China
| | - Quansheng Guo
- School of Materials Science and Engineering, Hubei University Wuhan 430062 China
| | - Xin Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences Shenzhen 518055 China
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Photodeposition of Fe-Based Cocatalysts Capable of Effectively Promoting the Oxygen Evolution Activity of BaTaO2N. Catalysts 2023. [DOI: 10.3390/catal13020373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
Activation of narrow bandgap photocatalysts is a prerequisite for the efficient production of renewable hydrogen from water using sunlight. Loading of dual cocatalysts intended to promote reduction and oxidation reactions by photodeposition is known to greatly enhance the water splitting activity of certain oxide photocatalysts. However, it is difficult to photodeposit oxygen evolution cocatalysts onto narrow bandgap oxynitride photocatalysts because the driving forces for the necessary oxidation reactions are weak. The present work demonstrates oxidative photodeposition of the Fe-based cocatalyst FeOx onto a Mg-doped BaTaO2N photocatalyst having an absorption edge wavelength of 620 nm. This modification enhances the oxygen evolution activity of the photocatalyst more effectively than conventional impregnation methods. The rapid removal of photoexcited electrons from the photocatalyst by a reduction cocatalyst (Pt) and an electron acceptor (molecular oxygen) are evidently necessary for the photodeposition of the FeOx cocatalyst. A Mg-doped BaTaO2N photocatalyst coloaded with Pt and FeOx exhibits an apparent quantum yield of 1.2% at 420 nm during the oxygen evolution reaction in an aqueous AgNO3 solution. This photodeposition procedure does not involve any heat treatment and so provides new opportunities for the design and construction of oxygen evolution sites on narrow-bandgap non-oxide photocatalysts that may be prone to thermal decomposition.
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6
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Li H, Xiao J, Vequizo JJM, Hisatomi T, Nakabayashi M, Pan Z, Shibata N, Yamakata A, Takata T, Domen K. One-Step Excitation Overall Water Splitting over a Modified Mg-Doped BaTaO 2N Photocatalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Huihui Li
- School of Materials and Energy, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, Japan
| | - Jiadong Xiao
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, Japan
| | - Junie Jhon M. Vequizo
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, Japan
| | - Takashi Hisatomi
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, Japan
- PRESTO, JST, 4-17-1 Wakasato, Nagano-shi, Nagano 380-8553, Japan
| | - Mamiko Nakabayashi
- Institute of Engineering Innovation, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Zhenhua Pan
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, Japan
| | - Naoya Shibata
- Institute of Engineering Innovation, The University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Akira Yamakata
- Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku-ku, Nagoya 468-8511, Japan
| | - Tsuyoshi Takata
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, Japan
| | - Kazunari Domen
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano 380-8553, Japan
- Office of University Professors, The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan
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7
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Direct synthesis of BaTaO2N nanoparticle film on a conductive substrate for photoelectrochemical water splitting. J Catal 2022. [DOI: 10.1016/j.jcat.2022.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Hojamberdiev M, Vargas R, Kadirova ZC, Kato K, Sena H, Krasnov AG, Yamakata A, Teshima K, Lerch M. Unfolding the Role of B Site-Selective Doping of Aliovalent Cations on Enhancing Sacrificial Visible Light-Induced Photocatalytic H2 and O2 Evolution over BaTaO2N. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04547] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Mirabbos Hojamberdiev
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
- Department of Materials Chemistry, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Ronald Vargas
- Instituto Tecnológico de Chascomús (INTECH) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de San Martín (UNSAM), Avenida Intendente Marino, Km 8,2, B7130IWA Chascomús, Provincia de Buenos Aires, Argentina
| | - Zukhra C. Kadirova
- Department of Inorganic Chemistry, National University of Uzbekistan, 100174 Tashkent, Uzbekistan
- Uzbekistan-Japan Innovation Center of Youth, University Street 2B, 100095 Tashkent, Uzbekistan
| | - Kosaku Kato
- Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan
| | - Hadi Sena
- Center for Integrated Research of Future Electronics, Nagoya University, Nagoya, Aichi 464-8601, Japan
| | - Aleksei G. Krasnov
- Institute of Chemistry, Federal Research Center Komi Science Center, Ural Branch, Russian Academy of Science, Syktyvkar 167982, Russian Federation
| | - Akira Yamakata
- Graduate School of Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, Nagoya 468-8511, Japan
| | - Katsuya Teshima
- Department of Materials Chemistry, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
- Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
| | - Martin Lerch
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
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9
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Zou H, Qi Y, Du S, Liu L, Xin X, Bao Y, Wang S, Feng Z, Zhang F. Pyrochlore-structural Nd 2Ta 2O 5N 2 Photocatalyst with Absorption Edge of over 600 nm for Z-scheme Overall Water Splitting. Chem Commun (Camb) 2022; 58:10719-10722. [DOI: 10.1039/d2cc02903k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pyrochlore-structural oxynitride Nd2Ta2O5N2 with a visible light absorption edge of ca. 620 nm was explored for photocatalytic water splitting. Dual functions of Nd2Ta2O5N2 were confirmed by proton reduction and...
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10
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Dong B, Cui J, Qi Y, Zhang F. Nanostructure Engineering and Modulation of (Oxy)Nitrides for Application in Visible-Light-Driven Water Splitting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2004697. [PMID: 34085732 DOI: 10.1002/adma.202004697] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 01/22/2021] [Indexed: 06/12/2023]
Abstract
(Oxy)nitride-based nanophotocatalysts have been extensively investigated for solar-to-chemical conversion, and not only allow wide spectral utilization to achieve high theoretical energy conversion efficiency but also exhibit suitable conduction and valence band positions for robust reduction and oxidation of water. During the past decades, a few reviews on the research progress in designing and synthesizing new visible-light-responsive semiconductors for various applications in solar-to-chemical conversion have been published. However, those on the effects of their bulk and composite (surface/interface) nanostructures on basic processes as well as solar water splitting performances to produce hydrogen are still limited. In this review, a brief introduction on the relationship between the nanostructure photocatalytic properties is included. Three main processes of solar water splitting are involved, allowing the elucidation of the correlation with the nanostructural properties of the photocatalyst such as surface/interface, size, morphology, and bulk structure. Subsequently, the development of methodologies and strategies for modulating the bulk and composite structures to improve the efficiencies of the basic processes, particularly charge separation, is summarized in detail. Finally, the prospects of (oxy)nitride-based photocatalysts such as controlled synthesis, modulation of 1D/2D morphology, exposed facet regulation, heterostructure formation, theoretical simulation, and time- and space-resolved spectroscopy are discussed.
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Affiliation(s)
- Beibei Dong
- School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
| | - Junyan Cui
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Yu Qi
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Fuxiang Zhang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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11
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Wei S, Chang S, Yang F, Fu Z, Liu G, Xu X. Stable and efficient solar-driven photoelectrochemical water splitting into H 2 and O 2 based on a BaTaO 2N photoanode decorated with CoO microflowers. Chem Commun (Camb) 2021; 57:4412-4415. [PMID: 33949405 DOI: 10.1039/d0cc07778j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stable and efficient photoelectrochemical water splitting has been achieved using a BaTaO2N photoanode decorated with CoO microflowers. The CoO microflowers effectively collect holes from BaTaO2N which kinetically protects BaTaO2N against photocorrosion. A Faraday efficiency of almost unity (99.2%) has been recorded for O2 evolution reactions. The tips of the CoO microflowers are the most active sites for water oxidation reactions.
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Affiliation(s)
- Shunhang Wei
- Shanghai Putuo District People's Hospital, Tongji University, Shanghai, 200060, China. and Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Shufang Chang
- Shanghai Putuo District People's Hospital, Tongji University, Shanghai, 200060, China. and Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Fan Yang
- New Energy Automotive Center, School of Automotive Studies, Tongji University, Shanghai, 201804, China
| | - Zhengping Fu
- Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Degradation, University of Science and Technology of China, Hefei, 230026, China
| | - Gang Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Science, 72 Wenhua Road, Shenyang, 110016, China and School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang, 110016, China
| | - Xiaoxiang Xu
- Shanghai Putuo District People's Hospital, Tongji University, Shanghai, 200060, China. and Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China
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12
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Wang Z, Luo Y, Hisatomi T, Vequizo JJM, Suzuki S, Chen S, Nakabayashi M, Lin L, Pan Z, Kariya N, Yamakata A, Shibata N, Takata T, Teshima K, Domen K. Sequential cocatalyst decoration on BaTaO 2N towards highly-active Z-scheme water splitting. Nat Commun 2021; 12:1005. [PMID: 33579929 PMCID: PMC7881033 DOI: 10.1038/s41467-021-21284-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/19/2021] [Indexed: 11/09/2022] Open
Abstract
Oxynitride photocatalysts hold promise for renewable solar hydrogen production via water splitting owing to their intense visible light absorption. Cocatalyst loading is essential for activation of such oxynitride photocatalysts. However, cocatalyst nanoparticles form aggregates and exhibit weak interaction with photocatalysts, which prevents eliciting their intrinsic photocatalytic performance. Here, we demonstrate efficient utilization of photoexcited electrons in a single-crystalline particulate BaTaO2N photocatalyst prepared with the assistance of RbCl flux for H2 evolution reactions via sequential decoration of Pt cocatalyst by impregnation-reduction followed by site-selective photodeposition. The Pt-loaded BaTaO2N photocatalyst evolves H2 over 100 times more efficiently than before, with an apparent quantum yield of 6.8% at the wavelength of 420 nm, from a methanol aqueous solution, and a solar-to-hydrogen energy conversion efficiency of 0.24% in Z-scheme water splitting. Enabling uniform dispersion and intimate contact of cocatalyst nanoparticles on single-crystalline narrow-bandgap particulate photocatalysts is a key to efficient solar-to-chemical energy conversion.
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Affiliation(s)
- Zheng Wang
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan.,Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Ying Luo
- Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, Nagano, Japan
| | - Takashi Hisatomi
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan
| | - Junie Jhon M Vequizo
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan
| | - Sayaka Suzuki
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, Nagano, Japan
| | - Shanshan Chen
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan
| | - Mamiko Nakabayashi
- Institute of Engineering Innovation, The University of Tokyo, Tokyo, Japan
| | - Lihua Lin
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan
| | - Zhenhua Pan
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan
| | - Nobuko Kariya
- Science & Innovation Center, Mitsubishi Chemical Corporation, Yokohama-shi, Kanagawa, Japan
| | - Akira Yamakata
- Graduate School of Engineering, Toyota Technological Institute, Nagoya, Japan
| | - Naoya Shibata
- Institute of Engineering Innovation, The University of Tokyo, Tokyo, Japan
| | - Tsuyoshi Takata
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan
| | - Katsuya Teshima
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan. .,Department of Materials Chemistry, Faculty of Engineering, Shinshu University, Nagano, Japan.
| | - Kazunari Domen
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano-shi, Nagano, Japan. .,Office of University Professors, The University of Tokyo, Tokyo, Japan.
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13
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Wang R, Wang Q, Qian J, Xu X. Visible-light-driven photocatalytic water oxidation over LaNbON2–LaMg2/3Nb1/3O3 solid solutions. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00166c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid solutions (LaNbON2)1−x(LaMg2/3Nb1/3O3)x (0.0 ≤ x ≤ 1.0) show promising photocatalytic activity for water oxidation into oxygen under visible light illumination (λ ≥ 420 nm).
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Affiliation(s)
- Ran Wang
- Shanghai Putuo District People's Hospital
- Tongji University
- Shanghai
- China
- Shanghai Key Lab of Chemical Assessment and Sustainability
| | - Qi Wang
- Department of Neurosurgery
- Tongji Hospital
- Tongji University School of Medicine
- Tongji University
- Shanghai
| | - Jun Qian
- Department of Neurosurgery
- Tongji Hospital
- Tongji University School of Medicine
- Tongji University
- Shanghai
| | - Xiaoxiang Xu
- Shanghai Putuo District People's Hospital
- Tongji University
- Shanghai
- China
- Shanghai Key Lab of Chemical Assessment and Sustainability
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