未成对电子
电子顺磁共振
降级(电信)
化学
吸附
电子转移
猝灭(荧光)
电子
碳纤维
双酚A
兴奋剂
电化学
光化学
材料科学
物理化学
有机化学
分子
荧光
核磁共振
电极
复合材料
物理
环氧树脂
光电子学
量子力学
计算机科学
电信
复合数
作者
Yongli He,Chuan-Shu He,Li Lai,Peng Zhou,Heng Zhang,Lingli Li,Zhaokun Xiong,Yang Mu,Zhicheng Pan,Gang Yao,Bo Lai
标识
DOI:10.1016/j.apcatb.2022.121390
摘要
In this study, N and O co-doping carbon materials with porous structure (NOPC-x) were applied to activate peroxymonosulfate (PMS) for bisphenol (BPA) degradation and the underlying effects in affecting NOPC-x activity were revealed. Electrochemical characterization, electron paramagnetic resonance (EPR) tests, quenching and PMS adsorption experiments were applied to clarify the mechanism of BPA degradation. It’s found that BPA can be completely removed within 20 min (kobs = 0.30 min−1) in the NOPC/PMS system depending on the electron transfer path with the necessity of moderate surfaced unpaired electrons for electrons delivery, which could be regulated by the modifier dosage. However, excessive surfaced unpaired electrons were unfavorable to PMS adsorption, resulting in deterioration of BPA degradation. This study indicates that controlling the amount of surfaced unpaired electrons in an appropriate range is essential to ensure the carbonaceous materials activity in PMS activation to obtain a satisfactory BPA degradation.
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