何作利

(研究员)

 博士生导师  硕士生导师
教师姓名:何作利
教师拼音名称:He Zuoli
入职时间:2019-06-14
所在单位:环境科学与工程学院
办公地点:山东大学(青岛校区) K5楼 307-1室
性别:男
联系方式:zlhe@sdu.edu.cn
职称:研究员
在职信息:在职
毕业院校:西安交通大学&美国犹他大学联合培养
学科:环境工程. 环境科学与工程

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Well-dispersed cobalt nanoparticles encapsulated on ZIF-8-derived N-doped porous carbon as an excellent peroxymonosulfate activator for sulfamethoxazole degradation

发布时间:2022-08-12 点击次数:

所属单位:山东大学
论文名称:Well-dispersed cobalt nanoparticles encapsulated on ZIF-8-derived N-doped porous carbon as an excellent peroxymonosulfate activator for sulfamethoxazole degradation
发表刊物:Chemical Engineering Journal
刊物所在地:Elsevier
关键字:MOFs-derived porous carbon; encapsulated Co NPs; PMS activation; synergistic interaction; non-radical pathway
摘要:The practical application of carbon materials supported cobalt (Co)-based heterogeneous materials as excellent peroxymonosulfate (PMS) activators has attracted wide attention in recent years because of their low particle self-agglomeration and low Co leaching. Herein, we developed a new synthetic strategy for designing Co nanoparticles (Co NPs)-encapsulated zeolitic imidazolate frameworks-8-derived porous carbon (NC) (denoted as Co-N@NC-x) by calcinating NC with a polydopamine-chelating Co coating. It was demonstrated that NC could effectively prevent Co agglomeration because it provided rich load sites for Co. Raman and X-ray photoelectron spectroscopy results indicated that the addition of Co could increase the surface defects of NC. Co-N@NC-x (0.1 g/L) efficiently catalyzed PMS to degrade 96.91% of sulfamethoxazole (SMX, 20 mg/L) within 90 min with an initial pH of 3.65–9.05 based on the synergistic effect between Co NPs and NC. It was demonstrated that Co NPs were the main active sites, and the defects and carbonyl (C=O) group active sites also contributed to SMX degradation by catalyzing PMS. Graphitic N was an adsorption site for SMX. A singlet oxygen (1O2)-dominated non-radical mechanism has been proposed. Additionally, Co-N@NC-90 exhibited excellent stability resulting from NC encapsulation. This work provides a novel approach for the application of metal organic framework-derived carbon-supported metal catalysts in wastewater purification.
全部作者:Zuoli He,Jiahuan Li
第一作者:Hao Liu
论文类型:期刊论文
通讯作者:Shan Zhao
页面范围:138597
字数:6000
是否译文:
发表时间:2022-09-01
收录刊物:SCI
发表时间:2022-09-01