固定化催化剂TiO2膜光催化降解三氯乙醛的研究

环境工程学报

固定化催化剂TiO2膜光催化降解三氯乙醛的研究

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李绍秀, 彭勃. 固定化催化剂TiO2膜光催化降解三氯乙醛的研究[J]. 环境工程学报, 2007, 1(9): 72-75.

引用本文:

李绍秀, 彭勃. 固定化催化剂TiO2膜光催化降解三氯乙醛的研究[J]. 环境工程学报, 2007, 1(9): 72-75.

Li Shaoxiu, Peng Bo. Photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film[J]. Chinese Journal of Environmental Engineering, 2007, 1(9): 72-75.

Citation:

Li Shaoxiu, Peng Bo. Photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film[J]. Chinese Journal of Environmental Engineering, 2007, 1(9): 72-75.

固定化催化剂TiO2膜光催化降解三氯乙醛的研究

李绍秀¹,
彭勃²

1.
广东工业大学建设学院，广州 510640
2.
广州市市政工程设计研究院，广州 510060
基金项目:
中图分类号: X703.1

Photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film

Li Shaoxiu¹,
Peng Bo²

1.
Faculty of Construction, Guangdong University of Technology, Guangzhou 510640
2.
Guangzhou Municipal Engineering Design and Research Institute, Guangzhou 510060
Fund Project:

摘要: 研究了负载于玻璃上的固定化催化剂TiO2膜光催化降解水中三氯乙醛的效果，探讨了TiO2膜光催化降解三氯乙醛的机理，考察了溶液pH值和三氯乙醛初始浓度对TiO2膜光催化降解三氯乙醛的影响，并研究了固定化催化剂TiO2膜光催化降解三氯乙醛的动力学。结果表明，固定化催化剂TiO2膜光催化降解水中三氯乙醛的效果良好，当三氯乙醛初始浓度为2.25 mg/L时，在紫外光照时间3 h下，三氯乙醛的降解率高达100%。在相同紫外光照时间下，三氯乙醛的光催化降解率随着三氯乙醛初始浓度的增大而下降。在溶液pH=6.5时，三氯乙醛的降解效率最高。固定化催化剂TiO2膜光催化降解三氯乙醛的反应遵循一级反应动力学，反应速率常数随三氯乙醛初始浓度的增大而减小。
- 光催化氧化 /
- 固定化TiO2膜 /
- 三氯乙醛
Abstract: The efficiency of photocatalytic degradation of chloral in water by fixed photocatalyst TiO2 thin film loaded on glass was studied. The mechanism of photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film was discussed. The influence of solution pH value and initial chloral concentration on photocatalytic degradation of chloral by TiO2 thin film was investigated, the dynamics of photocatalytic degradation of chloral was also studied. The result showed that the efficiency of photocatalytic degradation of chloral in water by fixed photocatalyst TiO2 thin film was good. When initial chloral concentration was 2.25 mg/L, the degradation rate of chloral was up to 100% after three hours ultraviolet irradiation. The chloral degradation rate decreased with the increase of initial chloral concentration. The degradation efficiency was highest at pH 6.5 of solution. The reaction of photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film obeyed one stage reaction dynamics, the reaction rate constant also decreased with the increase of initial chloral concentration.
- photocatalytic degradation /
- fixed TiO2 thin film /
- chloral

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李绍秀, 彭勃. 固定化催化剂TiO2膜光催化降解三氯乙醛的研究[J]. 环境工程学报, 2007, 1(9): 72-75.

引用本文:

李绍秀, 彭勃. 固定化催化剂TiO2膜光催化降解三氯乙醛的研究[J]. 环境工程学报, 2007, 1(9): 72-75.

Li Shaoxiu, Peng Bo. Photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film[J]. Chinese Journal of Environmental Engineering, 2007, 1(9): 72-75.

Citation:

Li Shaoxiu, Peng Bo. Photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film[J]. Chinese Journal of Environmental Engineering, 2007, 1(9): 72-75.

固定化催化剂TiO2膜光催化降解三氯乙醛的研究

李绍秀¹,
彭勃²

1. 广东工业大学建设学院，广州 510640
2. 广州市市政工程设计研究院，广州 510060

收稿日期: 2007-07-04

基金项目:

关键词:

摘要: 研究了负载于玻璃上的固定化催化剂TiO2膜光催化降解水中三氯乙醛的效果，探讨了TiO2膜光催化降解三氯乙醛的机理，考察了溶液pH值和三氯乙醛初始浓度对TiO2膜光催化降解三氯乙醛的影响，并研究了固定化催化剂TiO2膜光催化降解三氯乙醛的动力学。结果表明，固定化催化剂TiO2膜光催化降解水中三氯乙醛的效果良好，当三氯乙醛初始浓度为2.25 mg/L时，在紫外光照时间3 h下，三氯乙醛的降解率高达100%。在相同紫外光照时间下，三氯乙醛的光催化降解率随着三氯乙醛初始浓度的增大而下降。在溶液pH=6.5时，三氯乙醛的降解效率最高。固定化催化剂TiO2膜光催化降解三氯乙醛的反应遵循一级反应动力学，反应速率常数随三氯乙醛初始浓度的增大而减小。

English Abstract

Photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film

Li Shaoxiu¹,
Peng Bo²

1. Faculty of Construction, Guangdong University of Technology, Guangzhou 510640
2. Guangzhou Municipal Engineering Design and Research Institute, Guangzhou 510060

Received Date: 2007-07-04

Fund Project:

Keywords:

Abstract: The efficiency of photocatalytic degradation of chloral in water by fixed photocatalyst TiO2 thin film loaded on glass was studied. The mechanism of photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film was discussed. The influence of solution pH value and initial chloral concentration on photocatalytic degradation of chloral by TiO2 thin film was investigated, the dynamics of photocatalytic degradation of chloral was also studied. The result showed that the efficiency of photocatalytic degradation of chloral in water by fixed photocatalyst TiO2 thin film was good. When initial chloral concentration was 2.25 mg/L, the degradation rate of chloral was up to 100% after three hours ultraviolet irradiation. The chloral degradation rate decreased with the increase of initial chloral concentration. The degradation efficiency was highest at pH 6.5 of solution. The reaction of photocatalytic degradation of chloral by fixed photocatalyst TiO2 thin film obeyed one stage reaction dynamics, the reaction rate constant also decreased with the increase of initial chloral concentration.

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