PMID- 36721769 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230202 IS - 1932-7447 (Print) IS - 1932-7455 (Electronic) IS - 1932-7447 (Linking) VI - 127 IP - 3 DP - 2023 Jan 26 TI - Bimetallic FeO (x) -MO (x) Loaded TiO(2) (M = Cu, Co) Nanocomposite Photocatalysts for Complete Mineralization of Herbicides. PG - 1388-1396 LID - 10.1021/acs.jpcc.2c06796 [doi] AB - A series of monometallic and bimetallic cocatalyst(s), comprising FeO (x) , CuO (x) , CoO (x) , FeO (x) -CuO (x) , and FeO (x) -CoO (x) loaded TiO(2) catalysts prepared by the surface impregnation method, were investigated for the photocatalytic mineralization of the widely used four herbicides: 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP), 2,4-dichlorophenoxyacetic acid (2,4-D), and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T). It was found that FeO (x) -CoO (x) /TiO(2) showed the highest photocatalytic efficiency toward mineralization of selected herbicides. FeO (x) -CoO (x) /TiO(2) achieves 92% TOC removal in 180 min, representing nearly three time activity of the benchmark PC50 TiO(2). From XPS analysis, FeOOH, CuO, and CoO were determined to be loaded onto the TiO(2) surface. The outstanding photocatalytic performance of the optimized FeO (x) -CoO (x) /TiO(2) sample for herbicides mineralization is due to an increased charge separation and enhanced hydroxyl radicals production monitored by diverse spectroscopies. Based on the proposed charge transfer mechanism, FeO (x) -CoO (x) cocatalyst species accelerate the transfer of photogenerated holes on TiO(2), thus facilitating hydroxyl radicals production. CI - (c) 2023 The Authors. Published by American Chemical Society. FAU - Shoneye, Ayoola AU - Shoneye A AD - Department of Chemical Engineering University College London Torrington Place, London, WC1E 7JE, U.K. FAU - Jiao, Haimiao AU - Jiao H AD - Department of Chemical Engineering University College London Torrington Place, London, WC1E 7JE, U.K. FAU - Tang, Junwang AU - Tang J AUID- ORCID: 0000-0002-2323-5510 AD - Department of Chemical Engineering University College London Torrington Place, London, WC1E 7JE, U.K. LA - eng PT - Journal Article DEP - 20230117 PL - United States TA - J Phys Chem C Nanomater Interfaces JT - The journal of physical chemistry. C, Nanomaterials and interfaces JID - 101299949 PMC - PMC9884081 COIS- The authors declare no competing financial interest. EDAT- 2023/02/02 06:00 MHDA- 2023/02/02 06:01 PMCR- 2023/01/28 CRDT- 2023/02/01 01:50 PHST- 2022/09/24 00:00 [received] PHST- 2022/12/01 00:00 [revised] PHST- 2023/02/01 01:50 [entrez] PHST- 2023/02/02 06:00 [pubmed] PHST- 2023/02/02 06:01 [medline] PHST- 2023/01/28 00:00 [pmc-release] AID - 10.1021/acs.jpcc.2c06796 [doi] PST - epublish SO - J Phys Chem C Nanomater Interfaces. 2023 Jan 17;127(3):1388-1396. doi: 10.1021/acs.jpcc.2c06796. eCollection 2023 Jan 26.