Enhanced photocatalytic activity of tin oxide-doped molybdenum disulfide nanohybrids under visible light irradiation: Antibiotics elimination, heavy metal reduction and antibacterial behavior

Linjer Chen; Yuliv Chuang; Thanh-Binh Nguyen; Chiu-Wen Chen; Cheng-Di Dong

doi:10.1016/j.envres.2023.117259

Enhanced photocatalytic activity of tin oxide-doped molybdenum disulfide nanohybrids under visible light irradiation: Antibiotics elimination, heavy metal reduction and antibacterial behavior

Environ Res. 2023 Dec 1;238(Pt 2):117259. doi: 10.1016/j.envres.2023.117259. Epub 2023 Sep 28.

Authors

Linjer Chen¹, Yuliv Chuang², Thanh-Binh Nguyen², Chiu-Wen Chen³, Cheng-Di Dong⁴

Affiliations

¹ Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan.
² Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan.
³ Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan. Electronic address: cwchen@nkust.edu.tw.
⁴ Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, 81157, Taiwan. Electronic address: cddong@nkust.edu.tw.

PMID: 37775006
DOI: 10.1016/j.envres.2023.117259

Abstract

Nano-heterojunction photocatalytic can operate removal of pollutants, which is basic for the sustainable development of a clean environment. Herein, we propose a novel MoS₂/SnO₂ (MS) S-scheme heterojunction by a facile hydrothermal process, which is cheap, easily available, highly visible-light response, and good stability. The MS nano-heterojunction suggested superior performance with the photocatalytic degradation of 97.6% within 100 min for ciprofloxacin (CIP) removal, which was 5.74 and 4.88 folds higher than that of pristine MoS₂ and SnO₂, respectively. The fabricated MS photocatalysts displayed outstanding photocatalytic efficiency toward Cr (VI) reduction. The removal capability of Cr (VI) reached up to 92.5% within 60 min. The photodegradation efficiency was 5.2 folds that of pristine MoS₂. In addition, the antibacterial performance approximately approached 100% for E. coli within 10 min, which was more apparent than the others. A series of excellent results implied that MS nano-heterojunction had a high ultraviolet and visible light absorbance, larger specific surface area, outstanding electron-hole pairs migration and higher capability of photo-response electrons and holes separation rate. This system offers a novel window into the evolution of nano-heterojunction for wastewater treatment and solar energy harvesting applications.

Keywords: Antibacterial activity; Ciprofloxacin; Cr(VI) reduction; MoS(2)/SnO(2) nanohybrids; Photocatalytic.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Anti-Bacterial Agents
Escherichia coli
Light
Metals, Heavy*
Molybdenum*

Substances

molybdenum disulfide
Molybdenum
stannic oxide
Anti-Bacterial Agents
Metals, Heavy