Hydrothermal synthesis and photocatalytic performance of visible light responsive ZnS microspheres for azo dyes. (16th November 2022)

• Record Type: Journal Article
• Authors: Wen, Lizhen; Yang, Xiande; Huang, Haizan; Wei, Liang; Yang, Jing
• Is Part Of: New journal of chemistry. Volume 46:Number 47(2022)
• Page Start: 22715
• Page End: 22728
• Publication Date: 2022-11-16
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj04188j
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : ZnS microspheres show good photocatalytic activity toward RhB and maintain good photodegradation activity after four cycles. Abstract : The effects of Zn precursors, S precursors and hydrothermal temperatures on the morphologies and structures of ZnS microspheres were investigated by a facile hydrothermal method. The results showed that the mixed phase ZnS microspheres prepared with ZnCl2 and l -cysteine at 180 °C exhibited a visible light response. The as-prepared ZnS microspheres were used for photodegradation of rhodamine B (RhB), methyl orange (MO) and methylene blue (MB). The photodegradation rates of ZnS microspheres to these azo dyes were 87.5% (RhB), 84.3% (MB), and 65.3% (MO), respectively. In addition, ZnS microspheres maintained good photodegradation activity after four cycles. In this work, ˙O2 − was the major active species and the possible photocatalytic mechanism of ZnS microspheres was also illustrated.