期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 426, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.128065
关键词
Covalent organic frameworks; N-doped hierarchical porous carbon; Persulfate activation; 2,4-dichlorophenol degradation
资金
- Science and Technology Major Project of Shanxi Province [202005D121002]
- Yulin University [2021003]
- Dalian National Laboratory for Clean En-ergy [2021003]
- Youth Scientific and Technological Foundation of Shanxi Province [201901D211580]
Hierarchically porous carbon catalysts with high N content and large surface area were prepared via self-templated carbonization of COFs for PS activation in degrading 2,4-DCP. The catalyst showed strong adsorption ability and enhanced PS activity, with the graphitic N functional groups acting as both activity sites and electron transfer access. Increasing the graphitic N contents promoted the activation process, particularly the non-radical pathway, potentially improving degradation efficiency.
A series of hierarchically porous carbon catalysts with high N content and large surface area were prepared via self-templated carbonization of covalent organic frameworks (COFs). The catalyst was used to activate persulfate (PS) for degrading 2,4-dichlorophenol (2,4-DCP). Experimental results demonstrated that the prepared catalyst treated at 700 degrees C (PNC-700) showed both strong adsorption ability and enhanced PS activity for 2,4-DCP degradation. A variety of characterization techniques were used to investigate the properties of prepared catalysts. We found that the graphitic N functional groups acted as both activity sites and electron transfer access. The activity of the catalyst was also closely related to the hierarchical pore structure and good electrical conductivity. The influencing factors of PNC-700/PS system in 2,4-DCP degradation were discussed. In addition, PNC-700 displayed excellent recyclability. The activation process especially non-radical pathway was promoted by increasing graphitic N contents. The possible reaction mechanism and degradation pathways were also proposed.
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