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Chemcial Industry and Engineering 2023, Vol. 40 Issue (6) :1-14    DOI: 10.13353/j.issn.1004.9533.20230164
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Waste adsorbent derived cobalt modified carbon material for bisphenol A degradation by activating peroxymonosulfate
GUO Xu, ZHANG Qicheng, HE Hongwei, ZHANG Fengbao, FAN Xiaobin, LI Yang
School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China

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Abstract Firstly, a carboxymethyl chitosan aerogel (CMCS) adsorbent is synthesized and applied to purify cobalt ion wastewater. Then, the waste adsorbent after adsorption of cobalt ions is modified and calcined to synthesize the nitrogen-doped carbon material loaded with cobalt nanoparticles (Co@NC-800), which is applied to activate peroxymonosulfate (PMS) to degrade bisphenol A (BPA). Combined with kinetic analysis and a variety of characterization methods, it is proved that Co nanoparticles are the main active sites. By regulating the calcination temperature, it is found that graphite nitrogen is beneficial to improve the synergistic effect of Co nanoparticles and carbon substrate, thus promoting the activation of PMS. Radical quenching experiments and electrochemical analysis confirm that sulfate radical (SO·-4) and hydroxyl radical (·OH) are the main functional active species in the Co@NC-800/PMS system. This study provides a new approach for the efficient utilization of wastewater solid waste to prepare catalyst materials.
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GUO Xu
ZHANG Qicheng
HE Hongwei
ZHANG Fengbao
FAN Xiaobin
LI Yang
Keywordscobalt nanoparticles   peroxymonosulfate   graphite nitrogen   sulfate radical(SO·   -4)   hydroxyl radical(·   OH)     
Received 2023-04-03;
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GUO Xu, ZHANG Qicheng, HE Hongwei, ZHANG Fengbao, FAN Xiaobin, LI Yang.Waste adsorbent derived cobalt modified carbon material for bisphenol A degradation by activating peroxymonosulfate[J]  Chemcial Industry and Engineering, 2023,V40(6): 1-14
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