Graphite carbon nitride/ZnIn2S4 heterojunction photocatalyst with enhanced photocatalytic performance for degradation of tetracycline under visible light irradiation

被引:59
作者
Guo, Feng [1 ,2 ]
Cai, Yi [1 ]
Guan, Weisheng [1 ]
Huang, Hui [2 ]
Liu, Yang [2 ]
机构
[1] Changan Univ, Sch Environm Sci & Engn, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effects Arid Reg, Xian 710064, Shaanxi, Peoples R China
[2] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, 199 Renai Rd, Suzhou 215123, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
g-C3N4; ZnIn2S4; Heterojunction; Photocatalysis; Tetracycline; ZNIN2S4; SUBMICROSPHERES; HYDROTHERMAL SYNTHESIS; COMPOSITES; WATER; NANOCOMPOSITES; NANOPARTICLES; FABRICATION; NANOSHEETS; REMOVAL; G-C3N4;
D O I
10.1016/j.jpcs.2017.07.001
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
It is a widespread concern to address the antibiotics in water with low-cost and eco-friendly photocatalysts that could efficiently harvest solar light. Herein, we designed an efficient photocatalyst by integrating the lamellar gC(3)N(4) into Znln2S4 microflowers through a one-step hydrothermal method. The as-synthesized g-C3N4/Znln2S4 heterojunction photocatalysts exhibited evidently enhancement on the photocatalytic activities for the degradation of tetracycline (100 mL, 20 mg/L) compared with pristine g-C3N4 and Znln(2)S(4). Significantly, g-C3N4/Znln(2)S(4) composite with loading 50 wt.% g-C3N4 showed the highest photocatalytic performance (almost 100% degradation within 120 min), which was around 40 and 22.8 times higher than that of g-C3N4 and Znln(2)S(4), respectively. This enhanced photocatalytic activity of g-C3N4/Znln(2)S(4) is mainly attributed to the formation of heterostructure that can efficiently promote the transfer of photoinduced electrons and holes between g-C3N4 and Znln(2)S(4), restricting the recombination of electron-hole pairs. In addition, a possible mechanism was also proposed.
引用
收藏
页码:370 / 378
页数:9
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