NiS and MoS2 nanosheet co-modified graphitic C3N4 ternary heterostructure for high efficient visible light photodegradation of antibiotic

JOURNAL OF HAZARDOUS MATERIALS

卷:341

Article

Lu, Xuejun¹  Wang, Yu¹  Zhang, Xinyi²  Xu, Guangqing¹  Wang, Dongmei¹  Lv, Jun¹  Zheng, Zhixiang¹  Wu, Yucheng^1,3 

[1] Hefei Univ Technol, Sch Mat Sci & Engn, Lab Funct Nanomat & Devices, Hefei 230009, Anhui, Peoples R China

[2] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia

[3] Hefei Univ Technol, Anhui Prov Key Lab Adv Funct Mat & Devices, Hefei 230009, Anhui, Peoples R China

关键词: Ternary heterojunction;    Visible light;    Antibiotic;    Photodegradation;   

DOI  :  10.1016/j.jhazmat.2017.07.004

来源: Elsevier

【 摘 要 】

The development of efficient solar driven catalytic system for the degradation of antibiotics has become increasingly important in environmental protection and remediation. Non-noble-metal NiS and MoS2 nanosheet co-modified graphitic C3N4 ternary heterostructure has been synthesized via a facile combination of hydrothermal and ultrasound method, and the ternary heterostructure has been utilized for photocatalytic degradation of antibiotic agents. The antibiotics of ciprofloxacin (CIP) and tetracycline hydrochloride (TC) were photodegraded by the hybrid under the visible light. The optimal photodegradation rate of the ternary heterostructure reaches about 96% after 2 h irradiation, which is 2.1 times higher than that of pure g-C3N4 for TC degradation. The photocatalytic degradation rates of the ternary heterostructure for both CIP and TC obey the pseudo-first-order kinetic model. The enhanced visible light adsorption and charge separation efficiency contribute to the photocatalytic performance of the ternary heterostructure. This work provides new insights and pathways by which efficient degradation of antibiotics can be achieved and will stimulate further studies in this important field. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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