PMID- 35839989 OWN - NLM STAT- MEDLINE DCOM- 20220928 LR - 20220928 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 307 IP - Pt 1 DP - 2022 Nov TI - Amorphous Co@TiO(2) heterojunctions: A high-performance and stable catalyst for the efficient degradation of sulfamethazine via peroxymonosulfate activation. PG - 135681 LID - S0045-6535(22)02174-9 [pii] LID - 10.1016/j.chemosphere.2022.135681 [doi] AB - Persulfate-based advanced oxidation processes (AOPs) cannot easily achieve the efficient degradation of persistent organic pollutants (POPs) with high stability. In this study, a simple in situ precipitation method was used to prepare an amorphous Co@TiO(2) heterojunction catalyst. The deposition of Co oxide on TiO(2), which is relatively nontoxic, efficiently activated peroxymonosulfate (PMS) to degrade sulfamethazine (SMT) and reduce the leaching of Co ions (0.915%). A catalytic system prepared using 0.3 g L(-1) Co@TiO(2) and 0.5 g L(-1) PMS could degrade SMT within 30 min with a degradation rate of 95.8%. Co@TiO(2) could activate PMS over a wide pH range (5.00-9.00) to efficiently degrade other antibiotics and dyes. Radical-capture experiments and electron paramagnetic resonance analysis suggested that SMT degradation occurs through a combination of the free radical and non-radical pathways, in which singlet (1)O(2) played a major role. Owing to the novelty of the proposed composite materials, the degradation path of SMT, which was determined through liquid chromatography-mass spectrometry, differed from that reported previously. This study provides not only an advanced and renewable catalyst for SMT degradation but also a feasible strategy for designing materials for AOPs. CI - Copyright (c) 2022 Elsevier Ltd. All rights reserved. FAU - Zhang, Yunqiu AU - Zhang Y AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. FAU - He, Zhuang AU - He Z AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. FAU - Zhou, Jing AU - Zhou J AD - Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou, 510650, PR China. FAU - Huang, Yimin AU - Huang Y AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. FAU - Li, Wenyan AU - Li W AD - Joint Institute for Environmental Research and Education, College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China. FAU - Li, Yongtao AU - Li Y AD - Joint Institute for Environmental Research and Education, College of Resources and Environment, South China Agricultural University, Guangzhou, 510642, PR China. FAU - Li, Yuanxin AU - Li Y AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. FAU - Bi, Huilin AU - Bi H AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. FAU - Chang, Fengqin AU - Chang F AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. Electronic address: changfq@ynu.edu.cn. FAU - Zhang, Hucai AU - Zhang H AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. FAU - Hu, Guangzhi AU - Hu G AD - Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650504, PR China. Electronic address: guangzhihu@ynu.edu.cn. LA - eng PT - Journal Article DEP - 20220712 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Anti-Bacterial Agents) RN - 0 (Coloring Agents) RN - 0 (Peroxides) RN - 15FIX9V2JP (titanium dioxide) RN - 22047-43-4 (peroxymonosulfate) RN - 48U51W007F (Sulfamethazine) RN - D1JT611TNE (Titanium) SB - IM MH - Anti-Bacterial Agents/chemistry MH - Coloring Agents MH - Peroxides/chemistry MH - *Persistent Organic Pollutants MH - *Sulfamethazine/chemistry MH - Titanium OTO - NOTNLM OT - Advance oxidation process OT - Amorphous heterostructure OT - Peroxymonosulfate activation OT - Sulfamethazine degradation COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/07/16 06:00 MHDA- 2022/09/28 06:00 CRDT- 2022/07/15 19:25 PHST- 2022/05/25 00:00 [received] PHST- 2022/07/08 00:00 [revised] PHST- 2022/07/10 00:00 [accepted] PHST- 2022/07/16 06:00 [pubmed] PHST- 2022/09/28 06:00 [medline] PHST- 2022/07/15 19:25 [entrez] AID - S0045-6535(22)02174-9 [pii] AID - 10.1016/j.chemosphere.2022.135681 [doi] PST - ppublish SO - Chemosphere. 2022 Nov;307(Pt 1):135681. doi: 10.1016/j.chemosphere.2022.135681. Epub 2022 Jul 12.