催化作用
阿特拉津
降级(电信)
单线态氧
化学工程
纳米结构
激进的
纳米颗粒
化学
光化学
材料科学
氧气
纳米技术
杀虫剂
计算机科学
有机化学
农学
工程类
生物
电信
作者
Ahmed E. ElMetwally,Farnoosh Goodarzi,Katlyn K. Meier,Elsayed M. Zahran,Sundeep Rayat,Søren Kegnæs,Marc R. Knecht,Leonidas G. Bachas
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2021-11-17
卷期号:4 (11): 12222-12234
被引量:11
标识
DOI:10.1021/acsanm.1c02741
摘要
Metal dichalcogenides are promising candidates for heterogeneous catalysis. Designing them as a double-shelled hollow nanostructure can enhance their performance owing to the high surface area provided by the hollow inner space. Herein, we demonstrate a multistage templating approach to prepare double-shelled cages with Bi2S3 nanoparticles as an outer shell and Cu2S as an inner shell. A facile deposition method, coupled with a benign sulfidation process, has been developed to prepare such a double-shelled hollow structure. The prepared Cu2S@Bi2S3 double-shelled cages demonstrated a substantial catalytic reactivity in peroxymonosulfate (PMS) activation for the degradation of atrazine in the dark. Such performance is attributed to the synergy between Cu2S and Bi2S3 in activating PMS, which promotes radical generation and enhances the catalytic performance. Our mechanistic studies revealed that hydroxyl radicals and singlet oxygen are the dominant species generated during atrazine degradation.
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