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Enhanced tetracycline degradation through nonradical processes by modulating the exposure of active sites on the iron nanoconfined catalysts

文献类型：期刊论文

作者Yang, Dandan3,4; Xie, Chao3,4; Li, Yulian3; Wu, Zijian3; Li, Yahui3; Lu, Jiandong3; Hong, Peidong3; He, Junyong3; Zhu, Zhengguo1,2; Kong, Lingtao3
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2024-12-03
卷号349
ISSN号1383-5866
DOI10.1016/j.seppur.2024.127878
通讯作者Li, Yulian(ylli@issp.ac.cn) ; Kong, Lingtao(ltkong@iim.ac.cn)
英文摘要There is an urgent need to develop effective and sustainable methods for reducing water pollution. Non-homogeneous Fenton catalysts are commonly used to eliminate pollutants from water. However, the effectiveness of these catalysts is limited by the restricted availability and accessibility of the active site (AS). In this work, we presented a strategy for modulating the exposure of active nanometallic particles to fully expose the AS at the nanoscale. We also confined the AS in carbon frameworks with micropores and mesopores to enhance the effectiveness of AS utilization in Fenton-like reactions. The experimental results indicate that the Feout@N-C/PMS system achieved complete degradation of tetracycline within 10 min and maintained an efficient degradation rate of over 91% after five consecutive cycles. The degradation of contaminants was due to an effective non-radical mechanism, as shown by free radical quenching experiments, EPR reactive species capture tests, in situ Raman, and PMSO probe experiments. Furthermore, density-functional theory (DFT) calculations revealed that iron nanoparticles supported on nitrogen-doped carbon acted as active sites, enhancing electron transfer capacity (N-C (0.24 e) vs. Fe-out@N-C (0.69 e)). Finally, the intermediates have a limited environmental impact because of their extremely low concentrations, despite having a high relative toxicity. The exposed metal nanoparticle catalysts provide a new approach for effectively activating PMS to efficiently degrade organic contaminants with a high mineralization rate via the non-radical pathway.
WOS关键词CARBON NANOTUBES ; HETEROGENEOUS CATALYSTS ; OXYGEN ; WATER ; PEROXYMONOSULFATE ; OXIDATION ; REMOVAL ; CO
资助项目Natural Science Foundation of China[22376199] ; Natural Science Foundation of China[22306188] ; Natural Science Foundation of Anhui Province[2208085 MB36] ; Anhui Institute of Urban-Rural Green Development and Urban Renewal[2101001] ; Open Project Program of Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education[AHJZNX-2021- 09] ; Open Project Program of Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education[AHJZNX-2023-05] ; China Postdoctoral Science Foundation[2023 M733540] ; Zhongke Bengbu technology transfer project[202230]
WOS研究方向Engineering
语种英语
WOS记录号WOS:001265955000001
出版者ELSEVIER
资助机构Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; Anhui Institute of Urban-Rural Green Development and Urban Renewal ; Open Project Program of Engineering Research Center of Building Energy Efficiency Control and Evaluation, Ministry of Education ; China Postdoctoral Science Foundation ; Zhongke Bengbu technology transfer project
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/136911]  
专题中国科学院合肥物质科学研究院
通讯作者Li, Yulian; Kong, Lingtao
作者单位1.CAS Environm Sci & Technol Anhui Inc, Hefei, Peoples R China
2.cCilin, Hefei, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Environm Mat & Pollut Control Lab, HFIPS, Hefei 230031, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Dandan,Xie, Chao,Li, Yulian,et al. Enhanced tetracycline degradation through nonradical processes by modulating the exposure of active sites on the iron nanoconfined catalysts[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2024,349.
APA Yang, Dandan.,Xie, Chao.,Li, Yulian.,Wu, Zijian.,Li, Yahui.,...&Kong, Lingtao.(2024).Enhanced tetracycline degradation through nonradical processes by modulating the exposure of active sites on the iron nanoconfined catalysts.SEPARATION AND PURIFICATION TECHNOLOGY,349.
MLA Yang, Dandan,et al."Enhanced tetracycline degradation through nonradical processes by modulating the exposure of active sites on the iron nanoconfined catalysts".SEPARATION AND PURIFICATION TECHNOLOGY 349(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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