Sunasee, Sharmini Leong, Kah Hon Wong, Kien Tiek Lee, Gooyong Pichiah, Saravanan Nah, InWook Jeon, Byong-Hun Yoon, Yeomin Jang, Min 2024-01-19T21:03:23Z 2024-01-19T21:03:23Z 2021-09-04 2019-01 0944-1344 https://pubs.kist.re.kr/handle/201004/120534 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. English SPRINGER HEIDELBERG LIGHT PHOTOCATALYTIC ACTIVITY ENVIRONMENTAL REMEDIATION DOPED G-C3N4 RHODAMINE-B OXIDATION WATER TIO2 PHOTODEGRADATION MINERALIZATION MECHANISM Sonophotocatalytic degradation of bisphenol A and its intermediates with graphitic carbon nitride Article 10.1007/s11356-017-8729-7 1 ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, v.26, no.2, pp.1082 - 1093 ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 26 2 1082 1093 scie scopus 000455814700009 2-s2.0-85015003882 Environmental Sciences Environmental Sciences & Ecology Article LIGHT PHOTOCATALYTIC ACTIVITY ENVIRONMENTAL REMEDIATION DOPED G-C3N4 RHODAMINE-B OXIDATION WATER TIO2 PHOTODEGRADATION MINERALIZATION MECHANISM Sonophotocatalysis Bisphenol A Graphitic carbon nitride Ultrasound Visible light Intermediates