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两种含氨基β-环糊精衍生物对萘和蒽的光催化降解作用

杨成建 陈兴都 张璐 李超 郑直 周晨

杨成建, 陈兴都, 张璐, 李超, 郑直, 周晨. 两种含氨基β-环糊精衍生物对萘和蒽的光催化降解作用[J]. 环境科学研究, 2016, 29(12): 1865-1871.
引用本文: 杨成建, 陈兴都, 张璐, 李超, 郑直, 周晨. 两种含氨基β-环糊精衍生物对萘和蒽的光催化降解作用[J]. 环境科学研究, 2016, 29(12): 1865-1871.
YANG Chengjian, CHEN Xingdou, ZHANG Lu, LI Chao, ZHENG Zhi, ZHOU Chen. Effects of Two Amino Acids Derived from β-Cyclodextrinson on the Photodegradation of Naphthalene and Anthracene[J]. Research of Environmental Sciences, 2016, 29(12): 1865-1871.
Citation: YANG Chengjian, CHEN Xingdou, ZHANG Lu, LI Chao, ZHENG Zhi, ZHOU Chen. Effects of Two Amino Acids Derived from β-Cyclodextrinson on the Photodegradation of Naphthalene and Anthracene[J]. Research of Environmental Sciences, 2016, 29(12): 1865-1871.

两种含氨基β-环糊精衍生物对萘和蒽的光催化降解作用

基金项目: 陕西省教育厅专项科研计划项目(15JK1439)

Effects of Two Amino Acids Derived from β-Cyclodextrinson on the Photodegradation of Naphthalene and Anthracene

  • 摘要: 为进一步探讨含氨基β-CD(β-环糊精)衍生物对PAHs(多环芳烃)的光催化降解机理,合成了两种含氨基β-CD衍生物——ACD(氨基-β-CD)和EDCD(乙二胺-β-CD),并研究了其对溶液中萘和蒽的包合作用及光催化降解作用.结果表明:β-CD、ACD、EDCD对萘和蒽的包合能力分别为76.3和251 L/mol、111和394 L/mol、191和427 L/mol,由于β-CD亲水外缘极性基团的引入,使得其疏水空腔内部的水分子具有更高的能量,易移出,易被PAHs分子取代,因此ACD和EDCD的包合能力有所增强;对萘和蒽光敏化作用的大小表现为ACD>EDCD>β-CD,在溶液中分别加入3 g/L的β-CD、ACD和EDCD后,萘和蒽的光解率分别提高了40.0%~50.9%和44.3%~104%.研究显示:由于光解过程中含氨基β-CD疏水空腔对三重态PAHs起到了包合保护作用,导致三重态PAHs与三重态氧分子碰撞及产生高活性单重态氧的几率增加,包合作用越大光催化降解能力越强;但是ACD和EDCD的氨基会对三重态氧分子进攻三重态PAHs产生阻碍作用,导致光催化降解效率降低.

     

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出版历程
  • 收稿日期:  2016-05-20
  • 修回日期:  2016-07-19
  • 刊出日期:  2016-12-25

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