CuInS_(2)quantum-dot-modified g-C_(3)N_(4)S-scheme heterojunction photocatalyst for hydrogen production and tetracycline degradation  

作　　者：Jingjing Zhang Yue Zhao Kezhen Qi Shu-yuan Liu 

机构地区：[1]College of Pharmacy,Dali University,Dali 671000,China [2]Department of Pharmacology,Shenyang Medical College,Shenyang 110034,China

出　　处：《Journal of Materials Science & Technology》2024年第5期145-155,共11页材料科学技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.52272287,22268003 and 22202138);Project from Yunnan Province(Nos.202301AT070027,202305AF150116);Development Fund from Dali University(No.KY2296129740).

摘　　要：CuInS_(2)quantum-dot(CIS QD)-modified g-C_(3)N_(4)(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 102.4μmol 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.

关 键 词：CuInS_(2)QDs g-C_(3)N_(4) Photocatalysis Hydrogen production S-scheme heterojunction 

分 类 号：O64[理学—物理化学]