期刊
CHEMICAL ENGINEERING JOURNAL
卷 446, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.137361
关键词
Metal-organic framework; Peroxymonosulfate; Sulfamethoxazole; Superhydrophilicity
资金
- National Natural Science Foundation [21902060, 22004047]
- Natural Science Foundation Project of Jilin Province [20210101117JC, YDZJ202101ZYTS078, YDZJ202102CXJD049, 20210101113JC,20210203105]
- Project of Human Resources and Social Security Department of Jilin Province [2021Y019, 2021Z007]
In this study, a N,S,O-doped Co/CoO/Co9S8@carbon hybrid was synthesized and showed high and recyclable catalytic efficiency for degrading sulfamethoxazole. The hybrid material had potential applications in both flowing systems and large-scale static environments.
Herein, a N,S,O-doped Co/CoO/Co9S8@carbon hybrid (Co/CoO/Co9S8@NSOC) has been constructed by calcinating a Co-based metal-organic framework (Co-MOF) with 4,4-bipyridine and 2,5-thiophenedicarboxylic acid as linkers. Co/CoO/Co9S8@NSOC exhibited a high and recycled catalytic efficiency for peroxymonosulfate (PMS) activation to degrade sulfamethoxazole (SMX, 20 mg/L) with a reaction rate of 1.31 min 1, which was 5.2 times than that of Co-MOF. The catalytic behavior should be attributed to the rich active sites, lamellar morphology, superhydrophilicity, and magnetism. Furthermore, the Co/CoO/Co9S8@NSOC was immobilized on a filter membrane (CMFM) to adapt to the flowing system, which could recycle 20 times without losing activity. To employ in a large-scale static environment, the Co/CoO/Co9S8@NSOC was loaded on the commercial sponge (CoSPG). In a 50 L water tank, the CoSPG realized to decompose 160 mg/L SMX solution with 37 h and had longterm stability over 10 days. Notably, the PMS cost of treating one ton of wastewater is only $0.34, indicating a huge industrial application value.
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