Photodegradation of ciprofloxacin antibiotic in water by using ZnO-doped g-C 3 N 4 photocatalyst.

Autor: Van Thuan D; VK-Tech, Research Center, NTT Hi-Tech Institute, Nguyen Tat Thanh University, Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh City, Vietnam. Electronic address: doanthuanms@gmail.com., Nguyen TBH; VK-Tech, Research Center, NTT Hi-Tech Institute, Nguyen Tat Thanh University, Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh City, Vietnam., Pham TH; Faculty of Environment, School of Engineering and Technology, Van Lang University, 69/68 Dang Thuy Tram Street, Ward 13, Binh Thanh District, Ho Chi Minh City, Vietnam. Electronic address: huong.pt@vlu.edu.vn., Kim J; Air Pollution Research Center, Institute of Urban Science, University of Seoul, Seoul, Republic of Korea., Hien Chu TT; Department of Chemistry, Faculty of Building Materials, Ha Noi University of Civil Engineering (HUCE), Giai Phong, Hai Ba Trung, Hanoi, 10000, Vietnam., Nguyen MV; VNU-Key Laboratory of Advanced Materials for Green Growth, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Vietnam., Nguyen KD; Faculty of Environment, School of Engineering and Technology, Van Lang University, 69/68 Dang Thuy Tram Street, Ward 13, Binh Thanh District, Ho Chi Minh City, Vietnam., Al-Onazi WA; Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh, 11495, Saudi Arabia., Elshikh MS; Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 24251, Riyadh, 11495, Saudi Arabia.
Jazyk: angličtina
Zdroj: Chemosphere [Chemosphere] 2022 Dec; Vol. 308 (Pt 2), pp. 136408. Date of Electronic Publication: 2022 Sep 11.
DOI: 10.1016/j.chemosphere.2022.136408
Abstrakt: Ciprofloxacin antibiotic (CIP) is one of the antibiotics with the highest rate of antibiotic resistance, if used and managed improperly, can have a negative impact on the ecosystem. In this research, ZnO modified g-C 3 N 4 photocatalyst was prepared and applied for the decomposition of CIP antibiotic compounds in water. The removal performance of CIP by using ZnO/g-C 3 N 4 reached 93.8% under pH 8.0 and an increasing amount of catalyst could improve the degradation performance of the pollutant. The modified ZnO/g-C 3 N 4 completely oxidized CIP at a low concentration of 1 mg L -1 and the CIP removal efficiency slightly decreases (around 13%) at a high level of pollutant (20 mg L -1 ). The degradation rate of CIP by doped sample ZnO/g-C 3 N 4 was 4.9 times faster than that of undoped g-C 3 N 4 . The doped catalyst ZnO/g-C 3 N 4 also displayed high reusability for decomposition of CIP with 89.8% efficiency remaining after 3 cycles. The radical species including ·OH, ·O 2 - and h + are important in the CIP degradation process. In addition, the proposed mechanism for CIP degradation by visible light-assisted ZnO/g-C 3 N 4 was claimed.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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