Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 426, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.128134
Keywords
Metal-organic framework; Cobalt sulfide; Peroxymonosulfate; Supported catalyst; Sulfonamide antibiotics
Categories
Funding
- National Natural Science Foundation of China, China [21806008, 22176012, 21876008]
- Beijing Natural Science Foundation, China [8202016]
- Great Wall Scholars Training Program Project of Beijing Municipality Universities, China [CITTCD20180323]
- Beijing Talent Project, China [2020A27]
- Science and Technology General Project of Beijing Municipal Education Commission, China [KM202110016010]
- Fundamental Research Funds for Beijing University of Civil Engineering and Architecture, China [X20147/X20141/X20135/X20146]
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The study successfully prepared CoSx-CuSx/CF catalyst and investigated its application performance in wastewater treatment in detail. The catalyst exhibited excellent catalytic activity and reusability, making it a potential candidate for wastewater treatment.
The CoSx-CuSx was firmly immobilized on copper foam (CF) substrate to fabricate supported CoSx-CuSx/CF using ZIF-L(Co)/CF as a self-sacrificing template, in which CF substrate played an important role in improving the adhesion between CF and target catalyst as well as the interfacial interaction between CoSx and CuSx. The CoSxCuSx/CF performed well in catalytic peroxymonosulfate (PMS) activation, which can accomplish 97.0% sulfamethoxazole (SMX) degradation within 10 min due to the special structure and Co2+ regeneration promoted by S2- and Cu+. The influences of pH, PMS dosage, catalyst dosage, co-existing anions and natural organic matter (NOM) on SMX removal were studied in detail. CoSx-CuSx/CF presented excellent catalytic activity and reusability, which might be fascinating candidate for real wastewater treatment. The possible pathway of SMX degradation was proposed, and the toxicity of the intermediates during the degradation process were evaluated. It is noteworthy that long-term continuous degradation of sulfonamide antibiotics was achieved using a self developed continuous-flow fixed-bed reactor. This work demonstrated that CF as a substrate to fabricate sup-ported catalysts derived from MOF had great potential in actual wastewater remediation.
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