铋
复合数
降级(电信)
单线态氧
煅烧
X射线光电子能谱
化学
吸附
化学工程
激进的
催化作用
材料科学
光化学
有机化学
氧气
复合材料
计算机科学
电信
工程类
作者
Zishun Li,Xuekun Tang,Ganghong Huang,Xianping Luo,Dongsheng He,Qian Peng,Jing Huang,Minlin Ao,Kun Liu
标识
DOI:10.1016/j.seppur.2020.116825
摘要
Abstract A hierarchical Co3O4-Bi2O3 composite was first prepared via an adsorption-calcination method using a bismuth-based MOF (Bi-BTC) as the precursor and substrate. In the composite, Co3O4 nanoparticles are loaded on the outer layer of Bi2O3 rods derived from Bi-BTC and show a uniform honeycomb-like morphology. In dyes degradation tests, the Co3O4-Bi2O3 composite exhibits much better peroxymonosulfate (PMS) activation performance in RhB degradation than pure Bi2O3 or Co3O4. The Co3O4-Bi2O3/PMS system also shows high performance for various azo dyes and maintains good catalytic performance at wide pH range. Besides, the good chemical stability of Co3O4-Bi2O3 ensures it good reusability in four recycling tests. XPS and electrochemical analysis indicate the interaction of Bi species promotes the activation capacity of Co3O4 nanoparticles. The results of radicals quenching tests and ESR analysis reveal the singlet oxygen and superoxide radicals are the dominant functional radical species in Co3O4-Bi2O3/PMS system and subsequently a reasonable activation mechanism is proposed.
科研通智能强力驱动
Strongly Powered by AbleSci AI