单层或少层卤氧化物光催化材料的构建及其降解抗生素废水研究

项目名称： 单层或少层卤氧化物光催化材料的构建及其降解抗生素废水研究

项目编号： No.21476098

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 有机化学

项目作者： 李华明

作者单位： 江苏大学

项目金额： 89万元

中文摘要： 光催化氧化技术在环境化工领域污染物治理方面受到越来越多的关注。本课题拟以长碳链烷基吡啶等有机物与卤化物构建卤素功能化离子液体和金属基卤素离子液体。设计的离子液体阳离子具有表面活性功能，阴离子具有卤素和金属离子控制释放功能，以其作为直接反应源、分散剂和模板剂，可控合成特定晶面生长的超薄卤氧化物（卤氧化铋和金属掺杂卤氧化铋）纳米片材料。通过有机溶剂超声剥离卤氧化物纳米片至单层或少层结构卤氧化物材料，该类材料具有宽光谱吸收、高电子和空穴分离效率及晶面选择性催化等功能，实现抗生素有机污染物的高效光催化降解。系统研究单层或少层结构卤氧化物材料的组成、结构与抗生素污染物降解活性之间的内在关系，总结污染物降解的动力学规律，揭示抗生素污染物光催化降解的机理。

中文关键词： 单层或少层结构；离子液体；卤氧化物；光催化；抗生素

英文摘要： Photocatalytic oxidation technology has attracted increasing attention in environmental pollutant removal. In this project, organic precursors, such as long carbon chain alkyl pyridinium, are employed and combined with halogenide to assemble halogen functionalized ionic liquid and metal halide ionic liquid. The cations of these special ionic liquids have surfactivity ability and the anions have the controlled release ability of halogen and metal ion. Oxyhalide nanosheets(Bismuth oxyhalide and metal doped Bismuth oxyhalide) along the specific crystal growth will be controlled synthesized in the presence of functionalized ionic liquid which will play the role of dispersing agent, reactant and template at the same time. The oxyhalide with single layer or few layers structures are synthesized via organic solvent ultrasonic exfoliation from oxyhalide nanosheets. The oxyhalid with single layer or few layers structures have wide spectral absorption, high electrons and holes separation efficiency, selective crystal plane photocatalytic activity etc., which can achieve high efficient degradation of antibiotics organic pollutants. The relationship between the structure of the oxyhalid photocatalyst and the photocatalytic activities will be discussed in details. The kinetic rule and possible reactive mechanism for degradation of antibiotics organic pollutants will be well studied.

英文关键词： Single-layer or few-layers structures;Ionic liquids;Oxyhalide;Photocatalysis;Antibiotics