Effective peroxydisulfate activation by CQDs-MnFe2O4@ZIF-8 catalyst for complementary degradation of bisphenol A by free radicals and non-radical pathways

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外文摘要：The present study reported fabrication of novel carbon quantum dots-MnFe2O4@ZIF-8(CQDs-MFO@ZIF-8)by using co-precipitation hydrothermal method for activation of peroxydisulfate(PDS)to degrade bisphenol A(BPA),one of important emerging organic pollutants in water environment.CQDs-MFO@ZIF-8 served as a highly efficient thermal activated PDS catalyst with high catalytic degradation efficiency,reusability and stability.The catalyst achieved almost completely removal of 20.0 mg/L BPA within 5.0 min,and the degradation efficiency remained higher than 83％after 5 consecutive cycles.Free radicals(·OH,SO4·-and·O2-)and non-free radicals(1O2)were generated in the thermal PDS-activation system,in which singlet oxygen(1O2)played a dominant role in the degradation of BPA.The potential toxicity of BPA degradation intermediates was analyzed upon the culture of E.coli and Chlorella sorokiniana by using Ecological Structure-Activity Relationship Model(ECOSAR)program.The catalytic performances of BPA degradation by CQDs-MFO@ZIF-8 were evaluated for treatment of different practical water samples to further verify the feasibility of practical applications.This study provides proof-in-concept demonstration of new nanomaterials for enhanced catalytic water decontamination.

外文关键词：

Bisphenol ADegradationPeroxydisulfate1O2 Toxicity analysis

作者：

Shuo Li、Xinran Liu、Yongjie Zheng、Jun Ma、Shijie You、Heshan Zheng

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作者单位：

College of Chemistry and Chemical Engineering,Qiqihar University,Qiqihar 161006,China

State Key Laboratory of Urban Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin 150090,China

基金：

国家自然科学基金国家自然科学基金国家自然科学基金国家重点研发计划黑龙江省自然科学基金University Nursing Program for Young Scholars with Creative Talents in Heilongjiang Province

项目编号：

5227007452170039U22A202412022YFE0135700LH2021E117UNPYSCT-2020068

出版年：

2024

DOI：

10.1016/j.cclet.2023.108971

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(5)

参考文献量49