Issue 53, 2020, Issue in Progress
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RSC Advances

Novel MoS2 quantum dots as a highly efficient visible-light driven photocatalyst in water remediation

Linjer Chen, ORCID logo a   Shu-Ling Hsieh,b   Chia-Hung Kuo,b   Shuchen Hsieh,c   Wei-Hsiang Chen, ORCID logo d   Chiu-Wen Chen*a  and  Cheng-Di Dong ORCID logo *a  

* Corresponding authors

a Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Taiwan
E-mail: cwchen@nkust.edu.tw, cddong@nkust.edu.tw

b Department of Seafood Science, National Kaohsiung Marine University, Kaohsiung 81157, Taiwan

c Department of Chemistry and Center for Nanoscience and Nanotechnology, National Sun Yat-sen University, 70 Lien-Hai Rd, Kaohsiung 80424, Taiwan

d Institute of Environmental Engineering, National Sun Yat-sen University, Kaohsiung 804, Taiwan

Abstract

A direct and efficient hydrothermal system has been established for the synthesis of MoS2 quantum dots (QDs). Novel MoS2 QDs are an excellent potential photocatalysts to enhance photocatalytic response by charge separation under visible light irradiation. The optimum capability of QDs demonstrated the excellent photocatalytic ability for the degradation of organic pollutants. The microstructural, morphological, and optical properties of the MoS2 QDs are defined via X-ray diffraction (XRD), SEM, HRTEM, XPS, and UV-Vis absorption spectroscopy techniques. Under visible light irradiation, MoS2 QDs have great photocatalytic response for the degradation of Rh B that is 20 times higher than those of bulk MoS2 materials. The QDs possess practically the same catalytic response after 5 recycle runs, which is an evident proof of its stability. This course might pave the route toward creating current visible-light caused QD photocatalyst strategies for the highly valuable degradation of organic pollutants or antibiotics.

Graphical abstract: Novel MoS2 quantum dots as a highly efficient visible-light driven photocatalyst in water remediation

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Article information

DOI
https://doi.org/10.1039/D0RA04512H
Article type
Paper
Submitted
21 May 2020
Accepted
27 Jul 2020
First published
27 Aug 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 31794-31799

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Novel MoS2 quantum dots as a highly efficient visible-light driven photocatalyst in water remediation

L. Chen, S. Hsieh, C. Kuo, S. Hsieh, W. Chen, C. Chen and C. Dong, RSC Adv., 2020, 10, 31794 DOI: 10.1039/D0RA04512H

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