稀有金属(英文版)2024,Vol.43Issue(1) :198-211.DOI:10.1007/s12598-023-02403-z

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

Wei-Long Shi Zheng Xu Yu-Xing Shi Ling-Ling Li Jia-Lin Lu Xin-Hai Sun Xin Du Feng Guo Chang-Yu Lu
稀有金属(英文版)2024,Vol.43Issue(1) :198-211.DOI:10.1007/s12598-023-02403-z

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

Wei-Long Shi 1Zheng Xu 2Yu-Xing Shi 2Ling-Ling Li 2Jia-Lin Lu 2Xin-Hai Sun 2Xin Du 3Feng Guo 2Chang-Yu Lu4
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作者信息

  • 1. School of Material Science and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China
  • 2. School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu,China
  • 3. College of Chemistry,Zhengzhou University,Zhengzhou 450001,China
  • 4. 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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Abstract

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.

Key words

Photothermal/Photocatalytic H2 evolution/Cobalt phthalocyanine/Oxygen-doped g-C3N4/S-scheme heterojunction

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基金项目

National Natural Science Foundation of China(21906072)

National Natural Science Foundation of China(21906039)

National Natural Science Foundation of China(21908115)

National Natural Science Foundation of China(22006057)

Hebei Province 333 Talents Project(A202101020)

Science and Technology Project of Hebei Education Department(BJ2021010)

Graduate Student Innovation Ability Training Funding Project of Hebei Province(CXZZSS2023129)

Open Fund for Hebei Province Key Laboratory of Sustained Utilization & Development of Water Recourse(HSZYL2022002)

Instrumental Analysis Center,Jiangsu University of Science and Technology()

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78
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