CoS2-decorated CdS nanorods for efficient degradation of organic pollutants. (1st November 2022)

• Record Type: Journal Article
• Authors: Liu, Jinyang; Zhou, Yan; Tan, Xiuniang; Zhang, Shengjiang; Mo, Chunjiao; Hong, Xiaobo; Wu, Taolong; Tan, Xuecai; Liao, Yanjuan; Huang, Zaiyin
• Is Part Of: New journal of chemistry. Volume 46:Number 45(2022)
• Page Start: 21560
• Page End: 21567
• Publication Date: 2022-11-01
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj03743b
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : The heterostructure between CoS2 and CdS can improve the charge separation efficiency during photocatalysis and promote the generation of more OH and O2 − radicals under light irradiation. Abstract : The establishment of heterojunctions is an effective way to improve the performance of semiconductor photocatalysts as a solution to solve environmental pollution problems; however, the decomposition efficiency of organic pollutants driven by sunlight remains a challenge. Herein, CoS2 -decorated CdS hetero-junctions as highly efficient photocatalysts were rationally synthesized via a three-step process and CoS2 -decorated CdS composites were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, UV-Vis diffusion reflectance spectrometry, fluorescence spectroscopy analysis, X-ray photoelectron spectroscopy, electron paramagnetic resonance spectroscopy, and transient photocurrent measurement. Using organic dyes rhodamine B (Rh B) and nitenpyram (NTP) as model pollutants, the performance of the CoS2 -decorated CdS composites for the degradation of model pollutants were evaluated. Among them, the material with the best performance can degrade 99.5% Rh B and 92.5% NTP within 120 min. Furthermore, the catalyst still maintained its high catalytic activity after five cycles. This work provides a new idea for developing efficient and inexpensive hetero-junctions as photo-catalysts.