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Graphene/ β ‐cyclodextrin Membrane: Synthesis and Photoelectrocatalytic Degradation of Brominated Flame Retardants
Author(s) -
Cong Qiao,
Ren Miao,
Zhang Tingting,
Cheng Fangyuan,
Qu Jiao
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202102235
Subject(s) - tetrabromobisphenol a , degradation (telecommunications) , hexabromocyclododecane , chemistry , graphene , environmental chemistry , membrane , fire retardant , cyclodextrin , chemical engineering , nanotechnology , materials science , organic chemistry , computer science , biochemistry , telecommunications , engineering
Brominated flame retardants (BFRs) have attracted considerable attention due to their environmental persistence and potentially high environmental risk. Therefore, the development of an efficient method for the removal of BFRs is urgently needed. In this work, a photoelectrocatalytic method based on a graphene (GR)/ β ‐cyclodextrin ( β ‐CD) membrane was developed to degrade BFRs (including tetrabromobisphenol A (TBBPA) and 1,2,5,6,9,10‐hexabromocyclododecane (HBCD)). The obtained GR/ β ‐CD membrane has high efficiency for photoelectrocatalytic degradation and excellent chemical stability. Under optimum conditions, the photoelectrocatalytic degradation efficiencies of TBBPA was 99.2 % within 120 min, and HBCD was 90.7 % within 180 min. And superoxide radical was essential for the photoelectrocatalytic degradation of both TBBPA and HBCD. Toxicity assessments for the possible degradation pathways was a decreasing trend, which indicated that potential risks for aquatic organisms were reduced. Briefly, this work provides a strategy to construct a GR‐based photoelectrocatalyst and paves the pathway for practical applications. The work demonstrated here offers a new‐sight for designing and constructing efficient photoelectrocatalyst for environment‐related applications.