二氧化钛光催化降解染料橙黄

华东师范大学学士学位论文

分子筛二氧化钛光催化降解染料橙黄Ⅱ

Photocatalytic degradation of OrangeⅡby mesorporous TiO2

作者： 班级： 学号： 指导老师： 职称： 论文完成时间：

谢滔 环境科学2007级 10071740139 赵雅萍 副教授 2011年5月

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华东师范大学学士学位论文

目录

摘要 ....................................................................................................................... - 1 - Abstract ................................................................................................................ - 2 - 1前言 ................................................................................................................... - 3 - 1.1 引言 ............................................................................................................ - 3 - 1.2染料废水的处理技术 ............................................................................... - 3 - 1.2.1物理化学法 ......................................................................................... - 3 - 1.2.2 生物法 ................................................................................................. - 4 - 1.2.3 化学法 ................................................................................................. - 5 - 1.3 TiO2国内外研究进 ..................................................................................... - 8 - 1.3.1 TiO2国内外研究进展 .......................................................................... - 8 - 1.3.2 分子筛TiO2的研究进展 .................................................................. - 10 - 1.4论文研究理论 ........................................................................................... - 10 - 1.4.1 TiO2光催化氧化原理 ........................................................................ - 10 - 1.4.2 化学反应动力学理论........................................................................ - 11 - 2 实验部分 ......................................................................................................... - 12 - 2.1 实验仪器与试剂 ...................................................................................... - 12 - 2.2 橙黄Ⅱ ...................................................................................................... - 12 - 2.3 橙黄Ⅱ溶液的配置 ................................................................................. - 13 - 2.4 实验方法 .................................................................................................. - 13 - 3 实验结果与讨论 ............................................................................................. - 13 - 3.1分子筛TiO2的性质 .................................................................................. - 13 - 3.2 初始pH值的影响 ................................................................................... - 14 - 3.3 橙黄Ⅱ浓度的影响 .................................................................................. - 19 - 3.4 光照强度的影响 ...................................................................................... - 22 -

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4 结论 ................................................................................................................. - 24 - 参考文献： ......................................................................................................... - 25 - 致谢 ..................................................................................................................... - 27 -

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华东师范大学学士学位论文

摘要

染料废水具有水量大、水质复杂、色度深、化学需氧量、含盐量和酸碱度高、可生化性差等特点，是工业废水治理的难点之一。橙黄Ⅱ是染料废水中常见物质之一。本研究以橙黄II溶液作为研究对象，探究分子筛TiO2光催化降解橙黄Ⅱ的效率。主要研究pH值、反应底物浓度和光照强度对分子筛TiO2光催化降解橙黄Ⅱ活性的影响。通过实验发现，pH值，溶液初始浓度和光照强度对分子筛TiO2降解橙黄Ⅱ的效率影响很大，该新型光催化剂具有较好的光催化降解效率和矿化效率。

关键词：分子筛TiO2 橙黄Ⅱ溶液 光催化

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Abstract

Dye wastewater with a large amount of water, complex water quality, deep color, high chemical oxygen demand, salt content and acidity or alkalinity, and poor biodegradability characteristics, is one of the difficulties of industrial wastewater treatment. Orange Ⅱ is one of common substances found in dye wastewater. This study use Orange II as target compound to simulate wastewater solution, trying to explore the photocatalytic degradation efficiency of mesorporous TiO2 on Orange Ⅱ. The main factors are pH, substrate concentration of Orange II and light intensity. Experimental results show that pH value,the initial concentration of Orange Ⅱ and light intensity influence the photodegration rate and mineralization rate of Orange Ⅱ.It shows that mesorporous TiO2 has the best degradation efficiency and potential application.

Keywords: mesorporous TiO2 , Orange Ⅱ,photodegradation

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