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Sonophotocatalytic degradation of bisphenol A and its intermediates with graphitic carbon nitride

Title
Sonophotocatalytic degradation of bisphenol A and its intermediates with graphitic carbon nitride
Author
전병훈
Keywords
Sonophotocatalysis; Bisphenol A; Graphitic carbon nitride; Ultrasound; Visible light; Intermediates
Issue Date
2019-01
Publisher
SPRINGER HEIDELBERG
Citation
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, v. 26, No.2, Page. 1082-1093
Abstract
Since bisphenol A (BPA) exhibits endocrine disrupting action and high toxicity in aqueous system, there are high demands to remove it completely. In this study, the BPA removal by sonophotocatalysis coupled with nano-structured graphitic carbon nitride (g-C3N4, GCN) was conducted with various batch tests using energy-based advanced oxidation process (AOP) based on ultrasound (US) and visible light (Vis-L). Results of batch tests indicated that GCN-based sonophotocatalysis (Vis-L/US) had higher rate constants than other AOPs and especially two times higher degradation rate than TiO2-based Vis-L/US. This result infers that GCN is effective in the catalytic activity in Vis-L/US since its surface can be activated by Vis-L to transport electrons from valence band (VB) for utilizing holes (h(VB)(+)) in the removal of BPA. In addition, US irradiation exfoliated the GCN effectively. The formation of BPA intermediates was investigated in detail by using high-performance liquid chromatography-mass spectrometry (HPLC/MS). The possible degradation pathway of BPA was proposed.
URI
https://link.springer.com/article/10.1007%2Fs11356-017-8729-7http://repository.hanyang.ac.kr/handle/20.500.11754/106131
ISSN
0944-1344; 1614-7499
DOI
10.1007/s11356-017-8729-7
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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