Cocatalyst modification of niobium-substituted silver tantalate photocatalyst for enhanced solar water-splitting activity

Takashima, Toshihiro; Sano, Tsugeru; Irie, Hiroshi

doi:10.1016/j.ijhydene.2019.07.077

Cited by 9 publications

(4 citation statements)

References 65 publications

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“…Takashima et al have reported the Nb-substituted AgTaO 3 photocatalyst modified with Pt and cobalt phosphate (Co-Pi) for photocatalytic water splitting under simulated solar light irradiation. 286 Bare AgTa0.7Nb 0.3 O (ATNO) showed the water splitting activity with an H 2 production rate of 0.05 μmol h −1 and a stoichiometric amount of O 2 was also produced. Upon Pt loading, ATNO-Pt catalyst showed about 2.2 times enhanced performance in comparison to the pristine ATNO, whereas Co-Pi loading on ATNO showed a little enhancement.…”

Section: Energy and Environmental Applicationsmentioning

confidence: 99%

“…The band structure of used perovskite and the cocatalysts play an important role in the enhancement of photocatalytic activity in addition to their proper band positions, which allow the efficient photogenerated charge separation and transfer to achieve high hydrogen evolution activity. Takashima et al have reported the Nb-substituted AgTaO 3 photocatalyst modified with Pt and cobalt phosphate (Co-Pi) for photocatalytic water splitting under simulated solar light irradiation . Bare AgTa0.7Nb 0.3 O (ATNO) showed the water splitting activity with an H 2 production rate of 0.05 μmol h –1 and a stoichiometric amount of O 2 was also produced.…”

Section: Energy and Environmental Applicationsmentioning

confidence: 99%

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Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

2020

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The use of solar energy to catalyze the photo-driven processes has attracted tremendous attention from the scientific community because of its great potential to address energy and environmental issues. In this regard, several attempts have been made by researchers to design and develop different materials with enhanced photocatalytic efficiencies. This Review comprehensively summarizes the recent reports on perovskite oxide based photocatalysts for organic pollutant degradation, water splitting, carbon dioxide conversion, and nitrogen fixation along with the basic understanding of involved mechanisms, current trends and advances in the field. The different design, synthesis, and development strategies have been discussed in detail to provide a comprehensive view of materials’ fabrication that influences their photocatalytic properties. Subsequently, the insights from recent reports on different perovskite oxide based materials, including simple oxides, mixed oxides, and layered perovskite oxides, are provided for the above-mentioned photocatalytic applications in a detailed manner. Finally, a summary of photocatalytic applications and a perspective on future research direction have been discussed. Based on the research progress in this field, it is highly anticipated that the photocatalytic systems, comprising perovskite oxide materials along with groundbreaking technologies for large-scale realization of these processes, can be established in the near future to address the energy and environment-oriented challenges.

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Section: Energy and Environmental Applicationsmentioning

confidence: 99%

Section: Energy and Environmental Applicationsmentioning

confidence: 99%

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

2020

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“…Illuminated by this, up to now, Co–Pi cocatalyst has been successfully applied to many photocatalytic O 2 evolution systems based on various photocatalysts. [ 54,377–379,381a,391 ] Although many impressive achievements have been achieved, the photocatalytic O 2 evolution efficiency based on Co–Pi cocatalyst is still far from satisfactory. Therefore, the binary cobalt nickel–phosphate (CoNi‐Pi) with the synergistic effect between Co and Ni has been developed to achieve improved performance.…”

Section: Transition‐metal‐based Oxidation Cocatalysts For Photocataly...mentioning

confidence: 99%

Transition‐Metal‐Based Cocatalysts for Photocatalytic Water Splitting

et al. 2022

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Recently, semiconductor‐based photocatalytic water splitting has been extensively studied as a promising strategy for converting solar energy into carbon‐neutral and clean H2 fuel. However, the lack of sufficient active sites for surface redox reactions generally results in unsatisfactory photocatalytic water splitting performances over semiconductors. For this problem, cocatalyst provides an encouraging solution and is of great significance in improving photocatalytic performance. Noble metals and their derivatives are mostly utilized as efficient cocatalytic components, but their scarcity and expensiveness severely hamper large‐scale applications. Thereby, the utilization of noble‐metal‐free cocatalysts has aroused immense research attention. Owing to the facile availability, low cost, large abundance, high stability, and efficient performance, transition‐metal‐based materials have been developed as desirable candidates in the photocatalytic water splitting water splitting process. This review gives an outline of some recent advances in the active transition‐metal‐based water splitting cocatalysts. First, the fundamentals of transition‐metal‐based cocatalysts are presented, including the classification, function mechanisms, loading methods, modification strategies, and design considerations. Second, the various cases of depositing reduction cocatalysts, oxidation cocatalysts, and reduction–oxidation dual cocatalysts for water splitting are further discussed. Finally, the crucial challenges and possible research directions of transition‐metal‐based cocatalysts for photocatalytic water splitting are proposed.

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“…Irie et al [164] reported that the overall water splitting activity of silver tantalate (AgTaO3) increased by 80 times when Pt and CoOx nanoparticles were photodeposited on the surface functioning as the H2 and O2 evolution cocatalysts, respectively. Further work [165] showed that the photodeposition of Pt and Co-Pi cocatalysts can also promote photocatalytic water splitting into H2 and O2 with a stoichiometric ratio over niobium-substituted AgTaO3. Second, the photodeposition of the H2 and O2 cocatalysts is crystal facet selective.…”

Section: Photodeposition Of Earth-abundant Cocatalysts For Overall Wa...mentioning

confidence: 99%

Photodeposition of earth-abundant cocatalysts in photocatalytic water splitting: Methods, functions, and mechanisms

Zhao

Mao

Jian

et al. 2022

Chinese Journal of Catalysis

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Cocatalyst modification of niobium-substituted silver tantalate photocatalyst for enhanced solar water-splitting activity

Cited by 9 publications

References 65 publications

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis

Transition‐Metal‐Based Cocatalysts for Photocatalytic Water Splitting

Photodeposition of earth-abundant cocatalysts in photocatalytic water splitting: Methods, functions, and mechanisms

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