期刊論文

學年 112
學期 1
出版（發表）日期 2024-01-15
作品名稱 Highly Effective Degradation of Ibuprofen by Alkaline Metal-doped copper oxides via peroxymonosulfate activation: mechanisms, Degradation Pathway and Toxicity Assessments
作品名稱（其他語言）
著者 Meng-Wei Zheng, Cheng-Wei Lin, Pei-Hsin Chou, Chao-Lung Chiang, Yan-Gu Lin, Shou-Heng Liu
單位
出版者
著錄名稱、卷期、頁數 Journal of Hazardous Materials, 462, 132751
摘要 Redox ratios of Cu2+/Cu+ and adsorbed oxygen species (Oads) have shown great activity toward radical generation by activating peroxymonosulfate (PMS). Herein, different alkaline metal oxides (CaO, MgO and BaO) and various amounts of CaO are incorporated into CuO, which could tune the main active sites of redox ratios of Cu2+/Cu+ and Oads. The results show that CaO-CuO-5% exhibits the outstanding performance of PMS activation toward ibuprofen (IBF) degradation with excellent kinetics (k = 0.812 min−1). The X-ray absorption spectroscopy (XAS) and density functional theory (DFT) calculation show that the CaO-CuO-5% has the higher electron density with superior electron transfer ability and lower PMS adsorption energy. Based on radical scavengers and electron paramagnetic resonance spectrometer (EPR), a nonradical process is proposed to play the dominant role. The degradation pathway and the corresponding toxicity of degraded intermediates with residue PMS after reaction is evaluated by LC-MS/MS and bioassay experiments, indicating the lower antagonistic influence on human hormone receptors after advanced oxidation process. Mitigation of the Cu leaching with cyclic stability can be achieved. This study provides a facile method to optimize high-performance catalysts to activate PMS and offer practical environmental applications in the remediation of emerging contaminants.
關鍵字 Emerging contaminants, Redox ratios of Cu2+/Cu+, Adsorbed oxygen species, Bioassay tests, Singlet oxygen nonradical process
語言 en
ISSN
期刊性質 國外
收錄於 SCI SSCI Scopus
產學合作
通訊作者 Shou-Heng Liu
審稿制度 是
國別 NLD
公開徵稿
出版型式 ,電子版