PMID- 31606705 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20200303 LR - 20200303 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 384 DP - 2020 Feb 15 TI - Mechanism and performance of singlet oxygen dominated peroxymonosulfate activation on CoOOH nanoparticles for 2,4-dichlorophenol degradation in water. PG - 121350 LID - S0304-3894(19)31304-4 [pii] LID - 10.1016/j.jhazmat.2019.121350 [doi] AB - Peroxymonosulfate (PMS) has gained attention as oxidant for SR-AOPs. It is essential to develop a stable heterogeneous catalyst with strong hydrophilicity and high electron transfer capability for PMS activating. In this study, cobalt oxyhydroxide (CoOOH) was synthesized and activated PMS for degradation of 2,4-dichlorophenol (2,4-DCP) aiming to assess the feasibility of CoOOH/PMS system. 50 mg/L of 2,4-DCP could be 100% degraded within 120 min with 0.20 g/L CoOOH and 6 mM PMS. CoOOH/PMS system possessed a high degradation efficiency (0.0462 min(-1)), which was about 10 and 4 times higher than Co(3)O(4)/PMS and CoFe(2)O(4)/PMS system, respectively. Furthermore, it was found that CoOOH/PMS system displayed effective catalytic performance over broad pH range (e.g. 3-9). Importantly, the quenching tests revealed that (1)O(2) was identified as dominant reactive oxygen species (ROS). Co (Ⅲ) was rapidly reduced to Co (Ⅱ) owing to the efficient electron transfer rate performance of CoOOH in the catalytic reaction. Then, the regeneration of Co (Ⅱ) facilitated CoOH(+) owing to the surface of CoOOH with sufficient hydroxyl group, which is crucial for PMS activation and reactive oxygen species-ROS generation. This study proposed an alternative technology based on peroxymonosulfate catalyzed by cobalt-based hydroxide for waste water treatment. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Zhang, Qihui AU - Zhang Q AD - Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130026, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130026, PR China. FAU - He, Dan AU - He D AD - Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130026, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130026, PR China. FAU - Li, Xinran AU - Li X AD - Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130026, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130026, PR China. FAU - Feng, Wei AU - Feng W AD - Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130026, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130026, PR China. FAU - Lyu, Cong AU - Lyu C AD - Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130026, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130026, PR China. Electronic address: lvcong@jlu.edu.cn. FAU - Zhang, Yifeng AU - Zhang Y AD - Department of Environmental Engineering, Technical University of Denmark, DK-2800, Kongens Lyngby, Denmark. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191005 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 SB - IM OTO - NOTNLM OT - CoOOH OT - Electron transfer OT - Singlet oxygen OT - Sulfate radical OT - Surface hydroxyl density EDAT- 2019/10/14 06:00 MHDA- 2019/10/14 06:01 CRDT- 2019/10/14 06:00 PHST- 2019/06/27 00:00 [received] PHST- 2019/09/11 00:00 [revised] PHST- 2019/09/28 00:00 [accepted] PHST- 2019/10/14 06:00 [pubmed] PHST- 2019/10/14 06:01 [medline] PHST- 2019/10/14 06:00 [entrez] AID - S0304-3894(19)31304-4 [pii] AID - 10.1016/j.jhazmat.2019.121350 [doi] PST - ppublish SO - J Hazard Mater. 2020 Feb 15;384:121350. doi: 10.1016/j.jhazmat.2019.121350. Epub 2019 Oct 5.