光催化过程中羟基自由基的产生与效能

李国亭, 宋海燕, 刘秉涛. 光催化过程中羟基自由基的产生与效能[J]. 环境工程学报, 2012, 6(10): 3388-3392.
引用本文: 李国亭, 宋海燕, 刘秉涛. 光催化过程中羟基自由基的产生与效能[J]. 环境工程学报, 2012, 6(10): 3388-3392.
Li Guoting, Song Haiyan, Liu Bingtao. Production and contribution of hydroxyl radicals in photocatalytic oxidation process[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3388-3392.
Citation: Li Guoting, Song Haiyan, Liu Bingtao. Production and contribution of hydroxyl radicals in photocatalytic oxidation process[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3388-3392.

光催化过程中羟基自由基的产生与效能

  • 基金项目:

    国家自然科学基金资助项目(50708037)

    华北水利水电学院高层次人才启动项目

  • 中图分类号: X703

Production and contribution of hydroxyl radicals in photocatalytic oxidation process

  • Fund Project:
  • 摘要: 采用异丙醇淬灭的方法考察了羟基自由基在光催化氧化酸性橙Ⅱ过程中的产生和效能,研究了TiO2 (P-25)的浓度、异丙醇的用量、酸性橙Ⅱ的初始浓度、初始pH条件和天然共存离子对羟基自由基贡献率的影响。结果表明,在TiO2 (P-25)浓度提高时羟基自由基的贡献率逐步提高并稳定在77.6%,异丙醇的投加量对羟基自由基的贡献率影响不大,酸性橙Ⅱ初始浓度的提高则使羟基自由基的贡献率降低。在中性pH条件下羟基自由基的贡献率最高,酸性或碱性条件下较低。天然共存离子中HCO3-对羟基自由基的淬灭效应最强,F-的淬灭效应最弱。
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出版历程
  • 收稿日期:  2011-07-06
  • 刊出日期:  2012-10-16
李国亭, 宋海燕, 刘秉涛. 光催化过程中羟基自由基的产生与效能[J]. 环境工程学报, 2012, 6(10): 3388-3392.
引用本文: 李国亭, 宋海燕, 刘秉涛. 光催化过程中羟基自由基的产生与效能[J]. 环境工程学报, 2012, 6(10): 3388-3392.
Li Guoting, Song Haiyan, Liu Bingtao. Production and contribution of hydroxyl radicals in photocatalytic oxidation process[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3388-3392.
Citation: Li Guoting, Song Haiyan, Liu Bingtao. Production and contribution of hydroxyl radicals in photocatalytic oxidation process[J]. Chinese Journal of Environmental Engineering, 2012, 6(10): 3388-3392.

光催化过程中羟基自由基的产生与效能

  • 1. 华北水利水电学院环境与市政工程学院, 郑州 450011
基金项目:

国家自然科学基金资助项目(50708037)

华北水利水电学院高层次人才启动项目

摘要: 采用异丙醇淬灭的方法考察了羟基自由基在光催化氧化酸性橙Ⅱ过程中的产生和效能,研究了TiO2 (P-25)的浓度、异丙醇的用量、酸性橙Ⅱ的初始浓度、初始pH条件和天然共存离子对羟基自由基贡献率的影响。结果表明,在TiO2 (P-25)浓度提高时羟基自由基的贡献率逐步提高并稳定在77.6%,异丙醇的投加量对羟基自由基的贡献率影响不大,酸性橙Ⅱ初始浓度的提高则使羟基自由基的贡献率降低。在中性pH条件下羟基自由基的贡献率最高,酸性或碱性条件下较低。天然共存离子中HCO3-对羟基自由基的淬灭效应最强,F-的淬灭效应最弱。

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