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Vacancy-strengthened Cu/Co composite oxides for efficient removal of methylene blue via peroxymonosulfate activation: Synergism of multiple Lewis acid sites

文献类型：期刊论文

作者Zhang, Wanqi1,3; Zhu, Runchen1,3; Pan, Fakang1,2,3; Xie, Chao1,3; He, Junyong3; Wu, Zijian3; Li, Yulian3; Li, Yahui3; Lu, Jiandong3; Hong, Peidong3
刊名JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
出版日期2024-10-01
卷号12
关键词Vacancy-strengthened Cu/Co composite oxides Lewis acid sites PMS activation MB Removal Singlet oxygen
ISSN号2213-2929
DOI10.1016/j.jece.2024.113889
通讯作者He, Junyong(jyhe@iim.ac.cn) ; Hong, Peidong(hpd221@issp.ac.cn) ; Kong, Lingtao(ltkong@iim.ac.cn)
英文摘要The development of suitable catalysts poses a challenge for the peroxymonosulfate (PMS) activation system used in decontamination process. Here we constructed a series of vacancy-strengthened Cu/Co composite oxides (CuCoO) composed of CuCo2O4 and CuO containing multiple Lewis acid sites. The results demonstrate that the as-prepared CuCoO-2 exhibited exceptional activation performance, broad-ranging degradation capacity, remarkable reusability and stability. The optimized CuCoO-2+PMS system achieved complete removal of methylene blue (MB) in 40 min, while maintaining a degradation efficiency of above 86 % even after 5 cycles. A comprehensive survey revealed that hydroxyl radical (OH), sulfate radical (SO4.-) and singlet oxygen (O-1(2)) collectively contribute to the degradation of MB in the CuCoO-2+PMS system. Especially, O-1(2) was the dominant active species. The synergism of various Lewis acid sites (Cu+/2+, Co2+/3+ and V-O/N) as unsaturated surface-bound centers played a pivotal role in promoting non-radical-driven activation of PMS. Meanwhile, the generated V-O/N facilitated enhanced metallic valence circulation in CuCoO-2, strengthening electron mediation between PMS and MB. Additionally, possible degradation pathways and toxicity evaluations of MB and its intermediates were proposed. In conclusion, this work offers valuable insights into PMS activation by vacancy-strengthened CuCoO and is of great significance for water purification
WOS关键词COPPER ; DEGRADATION ; POLLUTANTS ; CATALYST
资助项目National Natural Science Foundation of China[22306188] ; National Natural Science Foundation of China[22376199] ; Natural Science Foundation of Anhui Province[2208085MB36] ; China Postdoctoral Science Foundation[2023M733540] ; CASHFIPS Director's fund[YZJJ2023QN32] ; Open Project Program of the Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education[AHJZNX-2024-01] ; Zhongke Bengbu technology transfer project[202230]
WOS研究方向Engineering
语种英语
WOS记录号WOS:001312535600001
出版者ELSEVIER SCI LTD
资助机构National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; China Postdoctoral Science Foundation ; CASHFIPS Director's fund ; Open Project Program of the Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education ; Zhongke Bengbu technology transfer project
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/135311]  
专题中国科学院合肥物质科学研究院
通讯作者He, Junyong; Hong, Peidong; Kong, Lingtao
作者单位1.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
2.Anhui Jianzhu Univ, Sch Environm & Energy Engn, Hefei 230601, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Environm Mat & Pollut Control Lab, HFIPS, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Wanqi,Zhu, Runchen,Pan, Fakang,et al. Vacancy-strengthened Cu/Co composite oxides for efficient removal of methylene blue via peroxymonosulfate activation: Synergism of multiple Lewis acid sites[J]. JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,2024,12.
APA Zhang, Wanqi.,Zhu, Runchen.,Pan, Fakang.,Xie, Chao.,He, Junyong.,...&Kong, Lingtao.(2024).Vacancy-strengthened Cu/Co composite oxides for efficient removal of methylene blue via peroxymonosulfate activation: Synergism of multiple Lewis acid sites.JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING,12.
MLA Zhang, Wanqi,et al."Vacancy-strengthened Cu/Co composite oxides for efficient removal of methylene blue via peroxymonosulfate activation: Synergism of multiple Lewis acid sites".JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12(2024).

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来源：合肥物质科学研究院

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