首页|Enhanced Fenton-like process over Cu/L(+)-ascorbic acid co-doping mesoporous silica for toxicity reduction of emerging contaminants

Enhanced Fenton-like process over Cu/L(+)-ascorbic acid co-doping mesoporous silica for toxicity reduction of emerging contaminants

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Effective removal of emerging contaminants(ECs)to minimize their impacts on human health and the natural environment is a global priority.For the removal of ECs in water,we fabricated a seaweed spherical microsphere catalyst with Cu cation-π structures by in situ doping of Cu species and ascorbic acid in mesoporous silica(Cu-C-MSNs)via a hydrothermal method.The results indicate that bisphenol A(BPA)is substantially degraded within 5 min under natural conditions,with its biological toxicity considerably weakened.Moreover,industrial wastewater could also be effectively purified by Cu-C-MSNs/H2O2 system.The presence of metal sites and the complexation of ECs via cation-πinteraction and π-π stacking on the catalyst surface were directly responsible for the polarization distribution of electrons,thus activating H2O2 and dissolved oxygen(DO).The removal of contaminants could be attributed primarily to 1)the activation of H2O2 into·OH to attack the contaminants and 2)self-cleavage because of the transfer of electrons from the contaminants to the catalysts This study provides an innovative solution for the effective treatment of ECs and has positive implications for easing global environmental crises.

Cation-π structuresPolarization electric fieldFenton-like processContaminants cleavage

Yuhang Liu、Wenxuan Deng、Xiaojun Wu、Chun Hu、Lai Lyu

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Key Laboratory for Water Quality and Conservation of the Pearl River Delta(Ministry of Education),Institute of Environmental Research at Greater Bay,Guangzhou University,Guangzhou 510006,China

国家自然科学基金国家自然科学基金国家自然科学基金Introduced Innovative Research and Development Team Project under the"Pearl River Talent Recruitment Program"of Guangdong PrBasic and Applied Basic Research Project of Guangzhou(China)

5212200952070046518380052019ZT08L387202201020163

2024

10.1007/s11783-024-1804-7

环境科学与工程前沿
高等教育出版社

环境科学与工程前沿

影响因子：0.545
ISSN：2095-2201
年,卷(期)：2024.18(4)
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