A High-Efficient Carbon-Coated Iron-Based Fenton-Like Catalyst with Enhanced Cycle Stability and Regenerative Performance

Catalysts

Jiankang Wang¹  Xianjin Hou²  Hongbo Xu²  Xin Li²  Xiao Zhang²  Zhongping Yao²  Zhaohua Jiang² 

[1] College of Materials Science and Engineering, Yangtze Normal University, Chongqing 408100, China;State Key Laboratory of Urban Water Resource and Environment, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China;

关键词: cc/Fe₃O₄@C Fenton-like catalyst;    regeneration;    ethanol solvothermal;    cycle stability;    phenol degradation;   

DOI  :  10.3390/catal10121486

来源: DOAJ

【 摘 要 】

Carbon coated iron-based Fenton-like catalysts are now widely studied in wastewater treatment. However, their poor stability is still a big challenge and the related regenerative performance is seldom investigated. Herein, a carbon-coated Fe₃O₄ on carbon cloth (cc/Fe₃O₄@C) was prepared with glucose as carbon source via electrodeposition and ethanol solvothermal methods. An amorphous carbon layer covered the surface of Fe₃O₄ with polar C-groups, which presents a flaky cross-linked network structure on the carbon cloth (cc). The cc/Fe₃O₄@C exhibits an improved catalytic activity with nearly 84% phenol was removed within 35 min, the adsorption performance of polar C-groups contributes to this. What’s more, 80% phenol can still be degraded in 120 min after 14 degradation cycles. After the regeneration treatment, the degradation performance was restored to the level of the fresh in the first two regenerations. The enhanced cycle stability and regeneration performance of the catalyst are as follows: Firstly, the catalyst’s composition and structure were recovered; Secondly, the reduction effect of the amorphous carbon layer ensuring timely supplement of Fe²⁺ from Fe³⁺. Also, the carbon layer reduces Fe leaching during the Fenton-like process.

【 授权许可】

Unknown