首页|Constructing S-scheme charge separation in cobalt phthalocyanine/oxygen-doped g-C3N4 heterojunction with enhanced photothermal-assisted photocatalytic H2 evolution

Constructing S-scheme charge separation in cobalt phthalocyanine/oxygen-doped g-C3N4 heterojunction with enhanced photothermal-assisted photocatalytic H2 evolution

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Hydrogen acquisition from solar energy is an effective way to address energy crisis,which makes the development of efficient photocatalysts become the main direction of scientific research.Herein,cobalt phthalocya-nine/oxygen-doped g-C3N4(CoPc/OCN)S-scheme hetero-junction photocatalyst was designed by coupling multi-step calcination with solvothermal method for enhanced pho-tothermal-assisted photocatalytic H2 evolution.The multi-step calcined g-C3N4 is easier for O-doping formation,and the ethanol solvothermal strategy is utilized to enhance the dispersion of CoPc on OCN nanosheet surface and forms sufficient S-scheme heterojunction through H-bonds.In addition,the active sites and excellent photothermal properties of CoPc itself further improve the integrated photocatalytic activity of CoPc/OCN S-scheme hetero-junction.The optimal photocatalytic hydrogen evolution rate of CoPc/OCN S-scheme heterojunction photocatalyst reached 9.56 mmol·g-1·h-1,which is 2.69 and 1.23 times higher than that of CN and OCN,respectively.This work provides a valuable design idea and scheme for enhancing the multi-factor co-assisted photocatalytic H2 evolution performance.

PhotothermalPhotocatalytic H2 evolutionCobalt phthalocyanineOxygen-doped g-C3N4S-scheme heterojunction

Wei-Long Shi、Zheng Xu、Yu-Xing Shi、Ling-Ling Li、Jia-Lin Lu、Xin-Hai Sun、Xin Du、Feng Guo、Chang-Yu Lu

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School of Material Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China

School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China

College of Chemistry,Zhengzhou University,Zhengzhou 450001,China

School of Water Resource and Environment,Hebei Province Key Laboratory of Sustained Utilization and Development of Water Recourse,Hebei Center for Ecological and Environmental Geology Research,Hebei Geo University,Shijiazhuang 050031,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaHebei Province 333 Talents ProjectScience and Technology Project of Hebei Education DepartmentGraduate Student Innovation Ability Training Funding Project of Hebei ProvinceOpen Fund for Hebei Province Key Laboratory of Sustained Utilization & Development of Water RecourseInstrumental Analysis Center,Jiangsu University of Science and Technology

21906072219060392190811522006057A202101020BJ2021010CXZZSS2023129HSZYL2022002

2024

10.1007/s12598-023-02403-z

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(1)
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