Influences of Various Cyclodextrins on the Photodegradation of Phenol and Bisphenol A under UV Light
Influences of Various Cyclodextrins on the Photodegradation of Phenol and Bisphenol A under UV Light
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DOI：
10.1021/ie503414k
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发表时间：
2015-01
影响因子：
4.2
通讯作者：
Yanbo Zhou;X. Gu;Ruzhuang Zhang;Jun Lu
中科院分区：
文献类型：
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作者：
Yanbo Zhou;X. Gu;Ruzhuang Zhang;Jun Lu
近年来，酚类化合物的去除在废水处理中引起了极大的关注。本文系统地研究了不同种类的环糊精（CD）对苯酚和双酚A（BPA）紫外光降解的影响。结果表明，苯酚的光降解在有无镉存在下没有明显差异。相反，BPA的光降解在β-CD及其衍生物的存在下显著增加。BPA对α-CD、β-CD、羧甲基-β-CD（CM-β-CD）和羟丙基-β-CD（HP-β-CD）的催化作用不同，β-CD> HP-β-CD > CM-β-CD > α-CD。在HP-β-CD和β-CD体系中，120 min内BPA降解率均超过99%。此外，确定了BPA在β-CD存在下的6个主要中间体，并提出了可能的降解途径，为CD在BPA光降解中的应用提供了一个平台。
Recently, the removal of phenolic compounds has attracted great attention in wastewater treatment. In this work, the influences of various cyclodextrins (CDs) on the photodegradations of phenol and bisphenol A (BPA) under UV light were investigated systematically. The results show that the photodegradation of phenol displays no obvious differences in the presence or absence of CDs. In contrast, BPA photodegradation increases considerably in the presence of β-CD and its derivatives. Moreover, the catalytic effects of BPA differed among α-CD, β-CD, carboxymethyl-β-CD (CM-β-CD), and hydroxypropyl-β-CD (HP-β-CD), following the order β-CD ≈ HP-β-CD > CM-β-CD > α-CD. Specifically, over 99% of the BPA was degraded in the HP-β-CD and β-CD systems within 120 min. Additionally, six main intermediates of BPA in the presence of β-CD were confirmed, and the probable degradation pathway was proposed, which provides a useful platform for the application of CDs in the photodegradation of BPA.