One-Step Block Copolymer Templated Synthesis of Bismuth Oxybromide for Bisphenol A Degradation: An Extended Study from Photocatalysis to Chemical Oxidation

  • Yueping Bao
    Yueping Bao
    Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, Singapore 637141
    More by Yueping Bao
  • Wen Jie Lee
    Wen Jie Lee
    Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, Singapore 637141
    Interdisciplinary Graduate Programme, Nanyang Technological University, Singapore 639798
    More by Wen Jie Lee
  • Justin Zhu Yeow Seow
    Justin Zhu Yeow Seow
    Interdisciplinary Graduate Programme, Nanyang Technological University, Singapore 639798
    Energy Research [email protected] ([email protected]), Nanyang Technological University, Singapore 639798
    School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
  • Hideyuki Hara
    Hideyuki Hara
    BioSpin Division, Bruker Japan K. K., 3-9, Moriya, Kanagawa, Yokohama, Kanagawa 221-0022, Japan
  • Yen Nan Liang
    Yen Nan Liang
    Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, Singapore 637141
  • Han Feng
    Han Feng
    Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, Singapore 637141
    Interdisciplinary Graduate Programme, Nanyang Technological University, Singapore 639798
    More by Han Feng
  • Jason Zhichuan Xu
    Jason Zhichuan Xu
    School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
  • Teik-Thye Lim
    Teik-Thye Lim
    Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, Singapore 637141
    School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798
  • , and 
  • Xiao Hu*
    Xiao Hu
    Nanyang Environment and Water Research Institute (NEWRI), Nanyang Technological University, Singapore 637141
    School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798
    *School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Ave., Singapore 639798. Telephone: +65 6790 4610. Email: [email protected]
    More by Xiao Hu
Cite this: ACS EST Water 2021, 1, 4, 837–846
Publication Date (Web):January 14, 2021
https://doi.org/10.1021/acsestwater.0c00190
Copyright © 2021 American Chemical Society
Article Views
647
Altmetric
-
Citations
-
LEARN ABOUT THESE METRICS
Read OnlinePDF (6 MB)
Supporting Info (1)»

Abstract

An energy and cost-effective method was reported for bismuth oxybromide (BiOBr) preparation, and its versatile applications were investigated from the well-established photocatalysis to chemical oxidation. The performance was evaluated by bisphenol A (BPA) degradation in both photocatalysis and chemical oxidation via peroxymonosulfate (PMS) activation in terms of the efficiency of organics removal, energy consumption, and toxicity of transformative products (TPs). Different from the commonly reported mechanism involving electron–hole pairs generation in photocatalysis, the electron transfer between different valence states of the active metal site [Bi(III)–Bi(V)–Bi(III)] was proposed as the major activation mechanism in the chemical oxidation. The different reaction mechanisms affected the BPA degradation pathway, resulting in the different TPs as well as toxicity to the aqua environment. Furthermore, the potential application of BiOBr as a multiactivator for different chemical oxidants was investigated and the versatility of the block copolymer template method was tested. Overall, this work provided a much more economic and simpler method for large scale synthesis of bismuth oxyhalides via a block copolymer as the template; meanwhile, the potential applications of the material were extended to chemical oxidation, which was far beyond the widely reported photocatalysis.

Supporting Information

ARTICLE SECTIONS
Jump To

The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acsestwater.0c00190.

  • Summary of synthesis approaches of BiOBr, cost calculation, performance evaluation, and toxicity of products (Tables S1–S4); detailed synthesis and characterizations of the materials (Figures S1–S8), detection of transformative products (Figure S9), and versatility of the application as well as the synthesis method (Figures S10–S13) (PDF)

Terms & Conditions

Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

Cited By


This article has not yet been cited by other publications.