Rational construction of CuFe2O4@C/Cd0.9Zn0.1S S-scheme heterojunction photocatalyst for extraordinary photothermal-assisted photocatalytic H2 evolution

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外文摘要：Rational design of photocatalyst to maximize the use of sunlight is one of the issues to be solved in pho-tocatalysis technology.In this study,the CuFe2O4@C/Cd0.9Zn0.1S(CFO@C/CZS)S-scheme photocatalyst with photothermal effect was synthesized by ultrasonic self-assembly combined with calcination.The dark CFO@C absorbed visible light and partly converted into heat to promote the hydrogen evolution reaction.The presence of heterojunctions inhibited the photogenerated electron-hole recombination.The graphite-carbon layer provided a stable channel for electron transfer,and the presence of magnetic CFO made recycle easier.Under the action of photothermal assistance and heterojunction,the hydrogen evolution rate of the optimal CFO@C/CZS was 80.79 mmol g-1 h-1,which was 2.55 times and 260.61 times of that of pure CZS and CFO@C,respectively.Notably,the composite samples also exhibit excellent stability and a wide range of environmental adaptability.Through experimental tests and first-principles simulation calculation methods,the plausible mechanism of photoactivity enhancement was proposed.This work provided a feasible strategy of photothermal assistance for the development of heterojunction photocatalysts with distinctive hydrogen evolution.

外文关键词：

Photothermal effectS-scheme heterojunctionPhotocatalytic hydrogen evolutionFirst-principles calculations

作者：

Dong Zhang、Minghui Zhu、Ran Qin、Peixian Chen、Maoye Yin、Dafeng Zhang、Junchang Liu、Hengshuai Li、Xipeng Pu、Peiqing Cai

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作者单位：

School of Physics Science and Information Technology,Shandong Key Laboratory of Optical Communication Science and Technology,Liaocheng University,Liaocheng 252000,Shandong,China

School of Materials Science and Engineering,Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology,Liaocheng University,Liaocheng 252000,Shandong,China

College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,Zhejiang,China

基金：

Shandong Provincial Natural Science FoundationShandong Provincial Natural Science FoundationShandong Provincial Key Research and Development Program(Public Welfare Science and Technology Research)Science and Technology Planning Project of Higher School in Shandong ProvinceLiaocheng Key Research and Development Program(Policy guidance category)Liaocheng University Highlevel Talents & PhD Research Startup Foundation

项目编号：

ZR2022ME179ZR2021QE0862019GGX103010J18KA2432022YDSF90318051619

出版年：

2024

DOI：

10.1016/j.jechem.2024.01.050

能源化学

中国科学院大连化学物理研究所中国科学院成都有机化学研究所

能源化学

CSTPCDEI

影响因子：0.654

ISSN：2095-4956

年,卷(期)：2024.92(5)