文献类型：期刊文献

英文题名：Highly dispersed, single-atom cobalt, Fenton-like catalyst on microporous silica for efficient advanced oxidation process

作者：Khan, Hashim Jalil[1];Ding, Jia[1,2];Qu, Jiangtao[3];Sarrigani, Gholamreza Vahedi[1];Fitzgerald, Paul[4];Xu, Xuyang[5];Ghadi, Amirali Ebrahimi[1];Sui, Qi[6];Tian, Chengcheng[5];Cairney, Julie M.[3];Wiley, Dianne[7];Wang, David[1]

机构：[1]Univ Sydney, Sch Chem & Biomol Engn, Camperdown, NSW 2006, Australia;[2]Zhejiang Univ Technol, Inst Ind Catalysis, Coll Chem Engn, State Key Lab Breeding Base Green Chem Synth Techn, Hangzhou 310032, Peoples R China;[3]Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Camperdown, NSW 2006, Australia;[4]Univ Sydney, Sydney Analyt, Core Res Facil, Camperdown, NSW 2066, Australia;[5]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[6]Zhejiang Sci Tech Univ, Sch Chem & Chem Engn, Key Lab Surface & Interface Sci Polymer Mat Zhejia, Hangzhou 310018, Peoples R China;[7]Univ Newcastle, Coll Engn, Callaghan, NSW 2308, Australia

年份：2025

卷号：706

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20253218927406);WOS:【SCI-EXPANDED(收录号:WOS:001544966000001)】；

基金：We acknowledge funding support from the Australian Research Council (DP190101734), the Sydney Analytical Core Research Facilities, the National Nature Science Foundation of China (22308327), the Natural Science Foundation of Zhejiang Province (LQ23B060006) and the technical and scientific assistance of Sydney Microscopy & Micro-analysis, the University of Sydney node of Microscopy Australia.

语种：英文

外文关键词：Cobalt catalyst; Single-atom catalyst; SiO2 support; Fenton-like oxidation; Wastewater treatment

摘要：Single-atom catalysts (SACs) have generated a significant research interest due to the enormous potential of being able to maximize the catalytic activity and efficiency. One synthetic strategy to control the dispersion, loading and surface area of catalyst to enhance catalyst performance is to design a heterogeneous, SAC system. However, the mechanistic control and understanding of catalyst dispersion, size distribution, and stability within a suitable support remains challenging. In this paper, a new strategy was developed for the synthesis of Fentonlike, Co-O-Si SAC by combining sol-gel chemistry and rapid thermal processing for catalytic metal-center anchoring. A high amount of Co metal loading of 16.3 wt% was achieved in a well-integrated, single atom Co-O-Si framework possessing excellent metal ion dispersion without any metal aggregation or metal oxides formation. The obtained Co-O-Si SAC delivered two orders of magnitude higher catalytic activity compared to the other cobalt-based, Fenton nanoparticle catalysts with outstanding reusability and performance stability for the removal of hazardous organic compounds using model antibiotics (oxytetracycline, tetracycline hydrochloride) and synthetic dyes (neutral red, acid orange).