文献类型：期刊文献

英文题名：Boosting Peroxymonosulfate Activation via CoS/MXene Nanocomposite for Rhodamine B Degradation under Simulated Sunlight Irradiation

作者：Wu, Yizhou[1,2];Zhao, Qingzi[1,2];Wang, Jia[1,2];Lu, Sitong[3];Zhou, Liang[1,2,4,5];Lei, Juying[1,2,3,4];Zhang, Jinlong[4,6];Liu, Yongdi[1,2,4]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Geol Engn Explorat Grp Co Ltd, Shanghai 200072, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]Shanghai Inst Pollut Control & Ecol Security, Shanghai 200092, Peoples R China;[6]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2024

卷号：19

期号：2

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20235215265683);WOS:【SCI-EXPANDED(收录号:WOS:001129440200001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22076046, 22176061), the Science and Technology Commission of Shanghai Municipality (21230712000), and the Fundamental Research Funds for the Central Universities (SLB13233301).

语种：英文

外文关键词：MXene; Peroxymonosulfate activation; Photocatalysis; Degradation

摘要：Cobalt-based heterogeneous catalysts have been demonstrated as an effective PMS activator for pollutant degradation. However, the limited active sites on their surface lead to an unsatisfactory catalytic efficiency. Immobilizing the catalysts on the support material can be a promising modification strategy to solve this problem. MXene has been considered as an ideal support material due to its unique morphology and physicochemical properties. Therefore, in this work, the CoS-loaded Ti3C2 MXene (CoS/Ti3C2 MXene) catalyst for peroxymonosulfate (PMS) activation was successfully synthesized through a solvothermal method. Under the simulated sunlight irradiation, the CoS/Ti3C2 MXene+PMS system achieved an impressive efficiency in removing the organic pollutant rhodamine B (97.2 % in 10 min). Among the tested catalysts, 30 %-CoS-TC stood out, exhibited a broad pH tolerance from 5 to 9 and maintained robust degradation performance over cycles. Upon detailed analysis, the degradation mechanism revealed the collaborative action dominated by singlet oxygen, and supplemented by photogenerated holes and superoxide radicals in the process. Notably, the sandwich-like structure of MXene played a pivotal role, not only dispersing the CoS particles evenly on the surface of catalysts, but also providing ample space for the active sites, thus accelerating the PMS activation for the degradation of rhodamine B. Overall, this study developed an innovative MXene-based catalyst for the application of environmental remediation. Three pathways worked collectively during the degradation process of photo-Fenton-like catalysts. Particularly, rhodamine B degradation was primarily attributed to 1O2 (singlet oxygen), which was generated along with the redox cycle of Co3+/Co2+.The process was also supplemented by photogenerated holes and & sdot;O2- (superoxide radicals). The structure of MXene offered ample space for accommodating functional nanomaterials, thus accelerating the PMS activation process.+image