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Open AccessArticle

N-Doped Carbon-Coated ZnS with Sulfur-Vacancy Defect for Enhanced Photocatalytic Activity in the Visible Light Region

1
College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
2
College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641100, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(12), 1657; https://doi.org/10.3390/nano9121657
Received: 21 October 2019 / Revised: 17 November 2019 / Accepted: 18 November 2019 / Published: 21 November 2019
In this work, N-doped carbon-coated ZnS with a sulfur-vacancy defect ([email protected]) was performed for the visible-light-driven photodegradation of tetracycline hydrochloride (TCH). The obtained [email protected] exhibited enhanced photocatalytic activity compared with ZnS for TCH removal. Among these [email protected] composites, [email protected] with N-doped content of 3.01% (100 nm) presented the best visible-light photocatalytic activity and superior long-term photocatalytic stability after five cycle times for TCH removal in the visible light region. This may be ascribed to the interface between the N-doped carbon shell and ZnS with a sulfur-vacancy defect for efficient charge transfer and the restrained recombination of charge carriers. Electron spin resonance (ESR) results indicate that the ·O2 radical plays a crucial role in the enhanced photocatalytic activity of [email protected] View Full-Text
Keywords: ZnS; sulfur-vacancy defect; N-doped carbon; visible-light harvesting ZnS; sulfur-vacancy defect; N-doped carbon; visible-light harvesting
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MDPI and ACS Style

Peng, H.; Liu, D.; Zheng, X.; Fu, X. N-Doped Carbon-Coated ZnS with Sulfur-Vacancy Defect for Enhanced Photocatalytic Activity in the Visible Light Region. Nanomaterials 2019, 9, 1657.

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