Visible light photocatalytic degradation of sulfanilamide enhanced by Mo doping of BiOBr nanoflowers.

Bismuth Catalysis Light Sulfanilamide
Band gap Degradation Mo-doped BiOBr Photocatalytic Sulfanilamide Visible light

Journal

Journal of hazardous materials
ISSN: 1873-3336
Titre abrégé: J Hazard Mater
Pays: Netherlands
ID NLM: 9422688

Informations de publication

Date de publication:
15 02 2022
Historique:
received: 04 09 2021
revised: 11 10 2021
accepted: 18 10 2021
pubmed: 5 11 2021
medline: 27 1 2022
entrez: 4 11 2021
Statut: ppublish

Résumé

Design of high-efficiency visible light photocatalysts is critical in the degradation of antibiotic pollutants in water, a key step towards environmental remediation. In the present study, Mo-doped BiOBr nanocomposites are prepared hydrothermally at different feed ratios, and display remarkable visible light photocatalytic activity towards the degradation of sulfanilamide, a common antibacterial drug. Among the series, the sample with 2% Mo dopants exhibits the best photocatalytic activity, with a performance 2.3 times better that of undoped BiOBr. This is attributed to Mo doping that narrows the band gap of BiOBr and enhances absorption in the visible region. Additional contributions arise from the unique materials morphology, where the highly exposed (102) crystal planes enrich the photocatalytic active sites, and facilitate the adsorption of sulfanilamide molecules and their eventual attack by free radicals. The reaction mechanism and pathways are then unraveled based on theoretical calculations of the Fukui index and liquid chromatography/mass spectrometry measurements of the reaction intermediates and products. Results from this study indicate that deliberate structural engineering based on heteroatom doping and morphological control may serve as an effective strategy in the design of highly active photocatalysts towards antibiotic degradation.

Identifiants

DOI: 10.1016/j.jhazmat.2021.127563 PMID: 34736201
pubmed: 34736201
pii: S0304-3894(21)02531-0
doi: 10.1016/j.jhazmat.2021.127563
pii:
doi:

Substances chimiques

Sulfanilamide 21240MF57M
bismuth oxybromide N427L0NH3S
Bismuth U015TT5I8H

Types de publication

Journal Article Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

127563

Informations de copyright

Copyright © 2021 Elsevier B.V. All rights reserved.

Auteurs

Yunyun Wu (Y)

Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, PR China.

Haodong Ji (H)

Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT) and Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China.

Qiming Liu (Q)

Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA.

Zhaoyang Sun (Z)

Office of Forensic Medicine and Toxicology, Department of Criminal Science and Technology, Beijing People's Police College, Beijing 102202, PR China.

Peisheng Li (P)

Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT) and Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China.

Peiren Ding (P)

Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, PR China.

Ming Guo (M)

Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, PR China.

Xiaohong Yi (X)

Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, PR China.

Wenlu Xu (W)

Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, PR China.

Chong-Chen Wang (CC)

Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, Beijing University of Civil Engineering and Architecture, Beijing 100044, PR China. Electronic address: wangchongchen@bucea.edu.cn.

Shuai Gao (S)

Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, PR China.

Qiang Wang (Q)

Laboratory for Micro-sized Functional Materials & College of Elementary Education and Department of Chemistry, Capital Normal University, Beijing 100048, PR China. Electronic address: qwchem@gmail.com.

Wen Liu (W)

Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT) and Key Laboratory of Water and Sediment Sciences, Ministry of Education, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, PR China.

Shaowei Chen (S)

Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA. Electronic address: shaowei@ucsc.edu.

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Classifications MeSH

questionsmedicales.fr › Produits chimiques inorganiques › Métaux › Métaux lourds › Bismuth › Visible light photocatalytic degradation of...
questionsmedicales.fr › Phénomènes chimiques › Catalyse › Visible light photocatalytic degradation of...
questionsmedicales.fr › Phénomènes physiques › Rayonnement › Rayonnement non ionisant › Lumière › Visible light photocatalytic degradation of...
questionsmedicales.fr › Composés chimiques organiques › Composés du soufre › Sulfones › Sulfonamides › Sulfamides › Sulfanilamide › Visible light photocatalytic degradation of...