PMID- 35667509 OWN - NLM STAT- MEDLINE DCOM- 20220627 LR - 20220627 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 304 DP - 2022 Oct TI - Fabrication of 3D self-supported MoS(2)-Co-P/nickel foam electrode for adsorption-electrochemical removal of Cr(Ⅵ). PG - 135209 LID - S0045-6535(22)01702-7 [pii] LID - 10.1016/j.chemosphere.2022.135209 [doi] AB - Electrochemistry is considered to be one of the most efficient and environment-friendly methods for removing highly toxic Cr (Ⅵ). In this study, a 3D self-supported MoS(2)-Co-P/nickel foam (NF) electrode was prepared via a calcination-hydrothermal process to remove the Cr (Ⅵ) in aqueous medium. Scanning electron microscope (SEM) analysis indicated that the pine-needle-like Co(2)P nanoneedle and flower-like MoS(2) nanosheets were successfully loaded on the three-dimensional (3D) framework of NF, which provided abundant active sites. The electrode modified by Co, P and MoS(2) exhibited high removal efficiency of Cr (Ⅵ) (96.9%) at pH 3.0, current of 0.128 mA and voltage of 2.5 V. Co, P and MoS(2) have the synergistic promotion on the catalytic performance of electrodes, and the reduction efficiency of Cr (Ⅵ) was greatly improved by 127.5 times relative to pure NF. The enhanced removal of Cr (Ⅵ) was related to the coupling effect of adsorption and electrocatalytic reduction. The mechanism study indicated that electron (e(-)) is the active species of Cr (Ⅵ) reduction. The Cr (Ⅵ) removal rate was maintained at 90 +/- 1% after five successive cycle experiments, demonstrating good stability and potential industrial applications of MoS(2)-Co-P/NF. CI - Copyright (c) 2022 Elsevier Ltd. All rights reserved. FAU - Shen, Lidong AU - Shen L AD - School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China. FAU - Ding, Wenchen AU - Ding W AD - School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China. FAU - Li, Xuchun AU - Li X AD - School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China. FAU - Zhang, Yi AU - Zhang Y AD - School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China. FAU - Cong, Yanqing AU - Cong Y AD - School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China. Electronic address: yqcong@zjsu.edu.cn. LA - eng PT - Journal Article DEP - 20220603 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0R0008Q3JB (Chromium) RN - 18540-29-9 (chromium hexavalent ion) RN - 7OV03QG267 (Nickel) RN - 81AH48963U (Molybdenum) SB - IM MH - Adsorption MH - Chromium MH - Electrodes MH - *Molybdenum/chemistry MH - *Nickel/chemistry OTO - NOTNLM OT - 3D pine-needle-like nanorods and flower-like nanosheets OT - Cr(Ⅵ) removal OT - MoS(2)-Co-P/NF OT - adsorption-electrocatalysis EDAT- 2022/06/07 06:00 MHDA- 2022/06/28 06:00 CRDT- 2022/06/06 19:25 PHST- 2022/02/16 00:00 [received] PHST- 2022/05/10 00:00 [revised] PHST- 2022/05/31 00:00 [accepted] PHST- 2022/06/07 06:00 [pubmed] PHST- 2022/06/28 06:00 [medline] PHST- 2022/06/06 19:25 [entrez] AID - S0045-6535(22)01702-7 [pii] AID - 10.1016/j.chemosphere.2022.135209 [doi] PST - ppublish SO - Chemosphere. 2022 Oct;304:135209. doi: 10.1016/j.chemosphere.2022.135209. Epub 2022 Jun 3.