Blocking backward reaction on hydrogen evolution cocatalyst in a photosystem II hybrid Z-scheme water splitting system

Zhen Li; Yu Qi; Wangyin Wang; Deng Li; Zheng Li; Yanan Xiao; Guangye Han; Jian Ren Shen; Can Li

doi:10.1016/S1872-2067(19)63311-5

Blocking backward reaction on hydrogen evolution cocatalyst in a photosystem II hybrid Z-scheme water splitting system

Zhen Li, Yu Qi, Wangyin Wang, Deng Li, Zheng Li, Yanan Xiao, Guangye Han, Jian Ren Shen, Can Li

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Photocatalytic Z-scheme water splitting is considered as a promising approach to produce solar hydrogen. However, the forward hydrogen production reaction is often impeded by backward reactions. In the present study, in a photosystem II-integrated hybrid Z-scheme water splitting system, the backward hydrogen oxidation reaction was significantly suppressed by loading a PtCrOx cocatalyst on a ZrO₂/TaON photocatalyst. Due to the weak chemisorption and activation of molecular hydrogen on PtCrOx, where Pt is stabilized in the oxidized forms, Pt^II and Pt^IV, hydrogen oxidation is inhibited. However, it is remarkably well-catalyzed by the metallic Pt cocatalyst, thereby rapidly consuming the produced hydrogen. This work describes an approach to inhibit the backward reaction in the photosystem II-integrated hybrid Z-scheme water splitting system using Fe(CN)₆³⁻/Fe(CN)₆⁴⁻ redox couple as an electron shuttle.

Original language	English
Pages (from-to)	486-494
Number of pages	9
Journal	Chinese Journal of Catalysis
Volume	40
Issue number	4
DOIs	https://doi.org/10.1016/S1872-2067(19)63311-5
Publication status	Published - Apr 2019

Keywords

Backward reaction
Cocatalyst
Hydrogen oxidation
Photosystem II
Water splitting

ASJC Scopus subject areas

Catalysis
Chemistry(all)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/S1872-2067(19)63311-5

Cite this

@article{00dd9f28cf4049aea85921d6e2733aff,

title = "Blocking backward reaction on hydrogen evolution cocatalyst in a photosystem II hybrid Z-scheme water splitting system",

abstract = "Photocatalytic Z-scheme water splitting is considered as a promising approach to produce solar hydrogen. However, the forward hydrogen production reaction is often impeded by backward reactions. In the present study, in a photosystem II-integrated hybrid Z-scheme water splitting system, the backward hydrogen oxidation reaction was significantly suppressed by loading a PtCrOx cocatalyst on a ZrO2/TaON photocatalyst. Due to the weak chemisorption and activation of molecular hydrogen on PtCrOx, where Pt is stabilized in the oxidized forms, PtII and PtIV, hydrogen oxidation is inhibited. However, it is remarkably well-catalyzed by the metallic Pt cocatalyst, thereby rapidly consuming the produced hydrogen. This work describes an approach to inhibit the backward reaction in the photosystem II-integrated hybrid Z-scheme water splitting system using Fe(CN)63−/Fe(CN)64− redox couple as an electron shuttle.",

keywords = "Backward reaction, Cocatalyst, Hydrogen oxidation, Photosystem II, Water splitting",

author = "Zhen Li and Yu Qi and Wangyin Wang and Deng Li and Zheng Li and Yanan Xiao and Guangye Han and Shen, {Jian Ren} and Can Li",

note = "Funding Information: This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB17000000), the Key Research Program of Frontier Sciences, CAS (QYZDY-SSW-JSC023), the National Natural Science Foundation of China (21603224, 31470339), and the National Key R&D Program of China (2017YFA0503700). This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB17000000), the Key Research Program of Frontier Sciences, CAS (QYZDY-SSW-JSC023), the National Natural Science Foundation of China (21603224, 31470339), and the National Key R&D Program of China (2017YFA0503700). Published 5 April 2019 Publisher Copyright: {\textcopyright} 2019 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences",

year = "2019",

month = apr,

doi = "10.1016/S1872-2067(19)63311-5",

language = "English",

volume = "40",

pages = "486--494",

journal = "Chinese Journal of Catalysis",

issn = "1872-2067",

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T1 - Blocking backward reaction on hydrogen evolution cocatalyst in a photosystem II hybrid Z-scheme water splitting system

AU - Li, Zhen

AU - Qi, Yu

AU - Wang, Wangyin

AU - Li, Deng

AU - Li, Zheng

AU - Xiao, Yanan

AU - Han, Guangye

AU - Shen, Jian Ren

AU - Li, Can

N1 - Funding Information: This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB17000000), the Key Research Program of Frontier Sciences, CAS (QYZDY-SSW-JSC023), the National Natural Science Foundation of China (21603224, 31470339), and the National Key R&D Program of China (2017YFA0503700). This work was supported by the Strategic Priority Research Program of Chinese Academy of Sciences (XDB17000000), the Key Research Program of Frontier Sciences, CAS (QYZDY-SSW-JSC023), the National Natural Science Foundation of China (21603224, 31470339), and the National Key R&D Program of China (2017YFA0503700). Published 5 April 2019 Publisher Copyright: © 2019 Dalian Institute of Chemical Physics, the Chinese Academy of Sciences

PY - 2019/4

Y1 - 2019/4

N2 - Photocatalytic Z-scheme water splitting is considered as a promising approach to produce solar hydrogen. However, the forward hydrogen production reaction is often impeded by backward reactions. In the present study, in a photosystem II-integrated hybrid Z-scheme water splitting system, the backward hydrogen oxidation reaction was significantly suppressed by loading a PtCrOx cocatalyst on a ZrO2/TaON photocatalyst. Due to the weak chemisorption and activation of molecular hydrogen on PtCrOx, where Pt is stabilized in the oxidized forms, PtII and PtIV, hydrogen oxidation is inhibited. However, it is remarkably well-catalyzed by the metallic Pt cocatalyst, thereby rapidly consuming the produced hydrogen. This work describes an approach to inhibit the backward reaction in the photosystem II-integrated hybrid Z-scheme water splitting system using Fe(CN)63−/Fe(CN)64− redox couple as an electron shuttle.

AB - Photocatalytic Z-scheme water splitting is considered as a promising approach to produce solar hydrogen. However, the forward hydrogen production reaction is often impeded by backward reactions. In the present study, in a photosystem II-integrated hybrid Z-scheme water splitting system, the backward hydrogen oxidation reaction was significantly suppressed by loading a PtCrOx cocatalyst on a ZrO2/TaON photocatalyst. Due to the weak chemisorption and activation of molecular hydrogen on PtCrOx, where Pt is stabilized in the oxidized forms, PtII and PtIV, hydrogen oxidation is inhibited. However, it is remarkably well-catalyzed by the metallic Pt cocatalyst, thereby rapidly consuming the produced hydrogen. This work describes an approach to inhibit the backward reaction in the photosystem II-integrated hybrid Z-scheme water splitting system using Fe(CN)63−/Fe(CN)64− redox couple as an electron shuttle.

KW - Backward reaction

KW - Cocatalyst

KW - Hydrogen oxidation

KW - Photosystem II

KW - Water splitting

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JF - Chinese Journal of Catalysis

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ER -

Blocking backward reaction on hydrogen evolution cocatalyst in a photosystem II hybrid Z-scheme water splitting system

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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