Orientation controlled photogenerated carriers on self-supporting CdS/Ni3S2 paper toward photocatalytic hydrogen evolution and biomass upgrading

Xiao-Yan Liu ¹Qing Cao ²Gui-Xiang Li ³Hui Liu ¹Li-Li Zeng ¹Li-Li Zhao ¹Bin Chang ⁴Xi-Wen Wang ⁵Hong Liu ⁶Wei-Jia Zhou¹

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作者信息

1. Institute for Advanced Interdisciplinary Research,School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China
2. Institute of Chemistry and Biochemistry,Freie Universität Berlin,14195 Berlin,Germany
3. Institute of Chemical Sciences and Engineering,École Polytechnique Fédérale de Lausanne,1015 Lausanne,Switzerland
4. Institute for Advanced Interdisciplinary Research,School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China;KAUST Catalysis Center,King Abdullah University of Science and Technology,Thuwal 23955-6900,Kingdom of Saudi Arabia
5. School of Environment and Energy,South China University of Technology,Guangzhou Higher Education Mega Center,Guangzhou 510006,China
6. Institute for Advanced Interdisciplinary Research,School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China;State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China;School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710054,China
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Abstract

The appropriate regulation of band structure is an effective strategy in constructing efficient photocatalytic systems.Present photocatalytic system mainly employs powder photocatalysts,which makes their recovery reliant on expensive separation processes and severely limits their industrial application.Herein,we constructed a novel CdS/Ni3S2 heterostructure using free-standing and flexible nickel fiber paper as the matrix.The regulated energy band structure achieves effective electron-hole separation.The as-synthesized flexible photocatalyst exhibits considerable photocatalytic activity toward the H2 evolution reaction under visible-light irradiation,with an H2 production rate of 5.63 μmol·cm-2·h-1(14.1 mmol·g-1cat·h-1 according to the catalyst loading content).Additionally,the otherwise-wasted excited holes simultaneously drive organic trans-formations to yield value-added organic products,thus markedly improving the photocatalytic H2 evolution rate.Such a photocatalytic system is scaled up further,where a self-supported 20 cm × 25 cm sample achieves a cham-pion H2 production rate of 60-80 μmol·h-1 under practical sun irradiation.This newly developed self-supported pho-tocatalyst produces opportunities for practical solar H2 production with biomass upgrading.

Key words

Self-supporting photocatalyst/CdS/Ni3S2 heterojunction/Hydrogen evolution/Biomass upgrading/Large-scale application

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基金项目

National Natural Science Foundation of China(51972147)

National Natural Science Foundation of China(52022037)

National Natural Science Foundation of China(52202366)

Taishan Scholars Project Special Funds(tsqn201812083)

Innovative Team Project of Jinan(2021GXRC019)

Natural Science Foundation of Shandong Province(ZR2019YQ20)

Natural Science Foundation of Shandong Province(ZR2021QE011)

Natural Science Foundation of Shandong Province(ZR2021JQ15)

Natural Science Foundation of Shandong Province(ZR2022YQ42)

King Abdullah University of Science and Technology(KAUST)()

出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDCSCDEI

影响因子：0.801

ISSN：1001-0521

参考文献量60

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