材料科学技术(英文版)2024，Vol.172Issue(5) ：145-155.DOI:10.1016/j.jmst.2023.06.042

CuInS2 quantum-dot-modified g-C3N4 S-scheme heterojunction photocatalyst for hydrogen production and tetracycline degradation

Jingjing Zhang Yue Zhao Kezhen Qi Shu-yuan Liu
材料科学技术(英文版)2024，Vol.172Issue(5) ：145-155.DOI:10.1016/j.jmst.2023.06.042
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CuInS2 quantum-dot-modified g-C3N4 S-scheme heterojunction photocatalyst for hydrogen production and tetracycline degradation

Jingjing Zhang 1Yue Zhao 1Kezhen Qi 1Shu-yuan Liu2
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作者信息

  • 1. College of Pharmacy,Dali University,Dali 671000,China
  • 2. Department of Pharmacology,Shenyang Medical College,Shenyang 110034,China
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Abstract

CulnS2 quantum-dot(CIS QD)-modified g-C3N4(CN)catalysts(CIS/CN)were prepared with the aid of an in-situ growth process.The as-obtained photocatalysts were explored by measuring their crystallinity,surface morphology,binding energy and light absorption activity.The photocatalytic efficiency of the pho-tocatalysts was evaluated through photocatalytic water splitting for hydrogen production and tetracycline(TC)antibiotic degradation under the simulated solar light and visible light respectively.The optimized sample(10CIS/CN)showed the best photocatalytic activity:producing 102.4 μmol g-1 h-1 of hydrogen in 1 h,or degrading 52.16％of TC in 120 min,which were respectively 48 or 3.4 times higher than the photocatalytic activity of CN itself.The enhancement in the efficiency of the composite system was prin-cipally accredited to the enlargement of light absorption,the more effective in charge transfer and the dropping of the charge carrier pair recombination through a formed S-scheme heterojunctional interface.This work is an effort to adjust CN-based polysulfide QD for speedy photocatalysis.The enriched photo-catalytic activity grants a new sense for adjusting the optical properties of CN.

Key words

CuInS2 QDs/g-C3N4/Photocatalysis/Hydrogen production/S-scheme heterojunction

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基金项目

National Natural Science Foundation of China(52272287)

National Natural Science Foundation of China(22268003)

National Natural Science Foundation of China(22202138)

Project from Yunnan Province(202301AT070027)

Project from Yunnan Province(202305AF150116)

Development Fund from Dali University(KY2296129740)

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
参考文献量58
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