eprintid: 18531
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/85/31
datestamp: 2024-06-04 14:10:48
lastmod: 2024-06-04 14:10:48
status_changed: 2024-06-04 14:03:31
type: article
metadata_visibility: show
creators_name: Sin, J.-C.
creators_name: Lam, S.-M.
creators_name: Zeng, H.
creators_name: Lin, H.
creators_name: Li, H.
creators_name: Huang, L.
creators_name: Liaw, S.-J.
creators_name: Mohamed, A.R.
creators_name: Lim, J.-W.
title: Construction of visible light-driven Eu-doped BiOBr hierarchical microflowers for ameliorated photocatalytic 2,4-dichlorophenol and pathogens decomposition with synchronized hexavalent chromium reduction
ispublished: pub
keywords: Bacillus cereus; Bacteriology; Bromine compounds; Chromium compounds; Decomposition; Energy utilization; Escherichia coli; Europium; Photocatalytic activity; Wastewater treatment,  reductions; 2,4-dichlorophenol degradation; Antimicrobial; Cr(VI) reduction; Dichlorophenols; Microflowers; Photo-activities; Photo-catalytic; Reactive species; Visible-light-driven, Bismuth compounds
note: cited By 17
abstract: The presence of diverse environmental contaminants has posed unprecedented challenges to wastewater treatment. Herein, Eu-doped BiOBr hierarchical microflowers (Eu-BiOBr) were fabricated via a surfactant-free hydrothermal route as highly efficient photocatalysts for multipurpose wastewater remediation applications. Under visible light irradiation, the Eu-BiOBr products demonstrated meritorious photoactivity when exposed to the mixture solution of 2,4-dichlorophenol (2,4-DCP) and Cr(VI). Noticeably, 97.6 of 2,4-DCP was degraded after 80 min, and a complete Cr(VI) reduction was obtained within 60 min over the optimized 2 at Eu-BiOBr. This was ascribed to Eu-doping efficiently accelerated charge separation and migration, thus proliferating more reactive species and enhancing photocatalytic performance. Moreover, the 2 at Eu-BiOBr possessed good photoactivity after four successive runs, which confirmed its recyclability. Further, as an evaluation of electrical energy consumption, the 2 at Eu-BiOBr was found to be more economical in decomposing both 2,4-DCP and Cr(VI). The reactive species scavenging tests validated that the hydroxyl radical played a major role for the photodegradation of 2,4-DCP whereas photogenerated electron served as predominant reactive species for Cr(VI) to be reduced to Cr(III). Additionally, the 2 at Eu-BiOBr demonstrated much enhanced bactericidal activities against Escherichia coli and Bacillus cereus compared to pristine BiOBr. These results revealed that the Eu-BiOBr can be employed as visible light-driven photocatalytic and antibacterial candidates for practical applications in environmental cleanup. © 2023 Elsevier Ltd
date: 2023
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85148547730&doi=10.1016%2fj.mtsust.2023.100340&partnerID=40&md5=e90cb8f283dc3574264a02a9c12026b7
id_number: 10.1016/j.mtsust.2023.100340
full_text_status: none
publication: Materials Today Sustainability
volume: 22
refereed: TRUE
citation:   Sin, J.-C. and Lam, S.-M. and Zeng, H. and Lin, H. and Li, H. and Huang, L. and Liaw, S.-J. and Mohamed, A.R. and Lim, J.-W.  (2023) Construction of visible light-driven Eu-doped BiOBr hierarchical microflowers for ameliorated photocatalytic 2,4-dichlorophenol and pathogens decomposition with synchronized hexavalent chromium reduction.  Materials Today Sustainability, 22.