期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 286, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2021.119912
关键词
Peroxymonosulfate activation; Cation-II structure; Electron donating; Pollutant degradation
资金
- China Postdoctoral Science Foundation [2020T130128]
- Guangdong Province Universities and Colleges Pearl River Scholar Funded Scheme
- Introduced Innovative R&D Team Project under the Pearl River Talent Recruitment Program of Guangdong Province [2019ZT08L387]
- National Natural Science Foundation of China [51808140, 22076082, 51838005, 51538013]
- National Key Research and Development Plan of China [2016YFA0203200]
- Natural Science Foundation of Guangdong Province [2018A030313487]
In this study, a new strategy was developed to accelerate electron transfer and achieve rapid degradation of pollutants by forming metal cation-pi structure through bonding atomically dispersed cobalt with nanospheric C-based graphene-like structures. The CO-pi structures were found to play a key role in the efficient activation of PMS, leading to rapid removal of pollutants. The successful practice demonstrated the potential of using cation-pi structure to enhance PMS activation and pollutant degradation.
Orbital interaction involving metal cation-pi is an important form for electron transfer regulation. To accelerate the interfacial electron transfer of peroxymonosulfate (PMS) activation for water treatment, we report a new strategy through bonding atomically dispersed cobalt with nanospheric C-based graphene-like structures (SACo-NGs) to form metal cation-pi structure, driving rapid and directional transfer of the electrons of pollutants to PMS on the catalyst surface. The catalyst SACo-NGs is synthesized by an enhanced hydrothermal-sintering method and the formation of metal cation-pi structure is demonstrated by X-ray absorption fine structure (EXAFS), X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance spectroscopy (EPR) and Raman spectroscopy. It is found that CO-pi structures (Co2+-N-C-pi) play a key role for the efficient activation of PMS, which results in pollutants being greatly removed in a few minutes. During the reaction, pollutants can donate electrons for the system through pi-pi interaction accompanying by the direct oxidative degradation of pollutants. The obtained electrons are quickly transferred to the atomically dispersed cobalt sites through the formed cation-pi structure, which promotes the activation of PMS. This is a successful practice in the field of PMS activation using cation-pi structure to accelerate electron transfer and achieve rapid degradation of pollutants.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据