Improved Photocatalytic Water Oxidation with Fe3+/Fe2+ Redox on Rectangular-shaped WO3 Particles with Specifically Exposed Crystal Faces via Hydrothermal Synthesis

Tomita, Osamu; Nitta, Shoji; Matsuta, Yuya; Hosokawa, Saburo; Higashi, Masanobu; Abe, Ryu

doi:10.1246/cl.160950

Cited by 22 publications

(18 citation statements)

References 21 publications

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Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

“… Adsorption isotherm (at 20 °C) of Fe cation on the surface of various WO 3 samples in aqueous solution with different concentration of FeCl 3 or FeCl 2 (amount of WO 3 , 0.1 g; amount of solvent, 10 mL; time for mixing in dark under inert gas atmosphere, 15 h). Reproduced with permission from ref ( 91 ). Copyright 2016 The Chemical Society of Japan.…”

Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

“…The efficiency of Z-scheme water splitting was indeed improved by employing this HT-315 sample as OEP couples with Ru/SrTiO 3 :Rh as a HEP in the presence of Fe 3+ /Fe 2+ redox couple. 91 …”

Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

“…(b) Initial rate of O 2 evolution on various WO 3 photocatalysts suspended in aqueous solutions containing Fe 3+ (16 mM) and Fe 2+ (0, 1.6, 3.1, 7.9, and 12.4 mM) under light irradiation (pH 2.1 adjusted with HCl). Reproduced with permission from ref ( 91 ). Copyright 2016 The Chemical Society of Japan.…”

Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

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Mimicking Natural Photosynthesis: Solar to Renewable H₂ Fuel Synthesis by Z-Scheme Water Splitting Systems

et al. 2018

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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” systems, which are inspired by the photosystem II–photosystem I (PSII/PSI) coupling from natural photosynthesis. A Z-scheme system comprises two photocatalysts and generates two sets of charge carriers, splitting water into its constituent parts, hydrogen and oxygen, at separate locations. This is not only more efficient than using a single photocatalyst, but practically it could also be safer. Researchers within the field are constantly aiming to bring systems toward industrial level efficiencies by maximizing light absorption of the materials, engineering more stable redox couples, and also searching for new hydrogen and oxygen evolution cocatalysts. This review provides an in-depth survey of relevant Z-schemes from past to present, with particular focus on mechanistic breakthroughs, and highlights current state of the art systems which are at the forefront of the field.

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Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

Section: Strategies For Improving Efficiency Of Z-scheme Systemsmentioning

confidence: 99%

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Mimicking Natural Photosynthesis: Solar to Renewable H₂ Fuel Synthesis by Z-Scheme Water Splitting Systems

et al. 2018

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“…For example, Fe 3+ is more favourable to adsorb on WO 3 surface than Fe 2+ (ref. 67 ). Preparation of Pt/SiC photocatalyst.…”

Section: Photoelectrochemical Properties Of Cumentioning

confidence: 99%

Direct and indirect Z-scheme heterostructure-coupled photosystem enabling cooperation of CO2 reduction and H2O oxidation

et al. 2020

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The stoichiometric photocatalytic reaction of CO 2 with H 2 O is one of the great challenges in photocatalysis. Here, we construct a Cu 2 O-Pt/SiC/IrO x composite by a controlled photodeposition and then an artificial photosynthetic system with Nafion membrane as diaphragm separating reduction and oxidation half-reactions. The artificial system exhibits excellent photocatalytic performance for CO 2 reduction to HCOOH and H 2 O oxidation to O 2 under visible light irradiation. The yields of HCOOH and O 2 meet almost stoichiometric ratio and are as high as 896.7 and 440.7 μmol g −1 h −1 , respectively. The high efficiencies of CO 2 reduction and H 2 O oxidation in the artificial system are attributed to both the direct Z-scheme electronic structure of Cu 2 O-Pt/SiC/IrO x and the indirect Z-scheme spatially separated reduction and oxidation units, which greatly prolong lifetime of photogenerated electrons and holes and prevent the backward reaction of products. This work provides an effective and feasible strategy to increase the efficiency of artificial photosynthesis.

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Photocatalytic Z‐scheme Overall Water Splitting: Insight into Different Optimization Strategies for Powder Suspension and Particulate Sheet Systems

et al. 2023

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Achieving solar light‐driven photocatalytic overall water splitting is the ideal and ultimate goal for solving energy and environment issues. Photocatalytic Z‐scheme overall water splitting has undergone considerable development in recent years; specific approaches include a powder suspension Z‐scheme system with a redox shuttle and a particulate sheet Z‐scheme system. Of these, a particulate sheet has achieved a benchmark solar‐to‐hydrogen efficiency exceeding 1.1 %. Nevertheless, owing to intrinsic differences in the components, structure, operating environment, and charge transfer mechanism, there are several differences between the optimization strategies for a powder suspension and particulate sheet Z‐scheme. Unlike a powder suspension Z‐scheme with a redox shuttle, the particulate sheet Z‐scheme system is more like a miniaturized and parallel p/n photoelectrochemical cell. In this review, we summarize the optimization strategies for a powder suspension Z‐scheme with a redox shuttle and particulate sheet Z‐scheme. In particular, attention has been focused on choosing appropriate redox shuttle and electron mediator, facilitating the redox shuttle cycle, avoiding redox mediator‐induced side reactions, and constructing a particulate sheet. Challenges and prospects in the development of efficient Z‐scheme overall water splitting are also briefly discussed.

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Improved Photocatalytic Water Oxidation with Fe³⁺/Fe²⁺ Redox on Rectangular-shaped WO₃ Particles with Specifically Exposed Crystal Faces via Hydrothermal Synthesis

Cited by 22 publications

References 21 publications

Mimicking Natural Photosynthesis: Solar to Renewable H₂ Fuel Synthesis by Z-Scheme Water Splitting Systems

Mimicking Natural Photosynthesis: Solar to Renewable H₂ Fuel Synthesis by Z-Scheme Water Splitting Systems

Direct and indirect Z-scheme heterostructure-coupled photosystem enabling cooperation of CO2 reduction and H2O oxidation

Photocatalytic Z‐scheme Overall Water Splitting: Insight into Different Optimization Strategies for Powder Suspension and Particulate Sheet Systems

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Improved Photocatalytic Water Oxidation with Fe3+/Fe2+ Redox on Rectangular-shaped WO3 Particles with Specifically Exposed Crystal Faces via Hydrothermal Synthesis

Cited by 22 publications

References 21 publications

Mimicking Natural Photosynthesis: Solar to Renewable H2 Fuel Synthesis by Z-Scheme Water Splitting Systems

Mimicking Natural Photosynthesis: Solar to Renewable H2 Fuel Synthesis by Z-Scheme Water Splitting Systems

Direct and indirect Z-scheme heterostructure-coupled photosystem enabling cooperation of CO2 reduction and H2O oxidation

Photocatalytic Z‐scheme Overall Water Splitting: Insight into Different Optimization Strategies for Powder Suspension and Particulate Sheet Systems

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Product

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Improved Photocatalytic Water Oxidation with Fe³⁺/Fe²⁺ Redox on Rectangular-shaped WO₃ Particles with Specifically Exposed Crystal Faces via Hydrothermal Synthesis

Mimicking Natural Photosynthesis: Solar to Renewable H₂ Fuel Synthesis by Z-Scheme Water Splitting Systems

Mimicking Natural Photosynthesis: Solar to Renewable H₂ Fuel Synthesis by Z-Scheme Water Splitting Systems