宽光谱响应Bi2WO6/上转光剂的可控合成及降解抗生素的机制研究

项目名称： 宽光谱响应Bi2WO6/上转光剂的可控合成及降解抗生素的机制研究

项目编号： No.41503102

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 地质学

项目作者： 陈美娟

作者单位： 西安交通大学

项目金额： 21万元

中文摘要： 传统水污染控制技术很难去除污水中的抗生素，发展高效的控制技术治理水体中的抗生素，对提高水质和保障供水安全具有重要的理论和现实意义。在前期研究基础上，本项目拟采用宽光谱（红外-可见光-紫外光）响应的Bi2WO6(钨酸铋)/上转光剂催化材料开展去除水体中典型抗生素的研究，系统研究合成条件（前驱体类型与配比、溶剂、反应条件）对催化剂微结构的影响，解析材料表面理化性质对降解水体中典型抗生素性能的影响途径；结合Bi2WO6/上转光剂的太阳光催化降解典型抗生素的性能，构建该催化材料微结构-催化性能的内在联系，考察其净化水体典型抗生素的工艺特性，分析其在实际应用中的可行性和稳定性；阐述Bi2WO6/上转光剂太阳光催化降解典型抗生素的机理和脱毒机制，建立可预测的反应动力学模型及降解路径，构建太阳光催化Bi2WO6/上转光剂材料去除水体典型抗生素的作用机制，为Bi2WO6/上转光剂催化材料走向应用奠定基础。

中文关键词： 光催化；上转换剂；抗生素；降解机制

英文摘要： It is essential to develop advanced wastewater treatment technology with high performance to remove antibiotics from water body. Based on our previous study, we will carry out the synthesis of Bi2WO6/upconversion composite photocatalysts which can be activated by visible and near-infrared light, and then apply them on the removal of antibiotics in wastewater in this study . For the synthesis of Bi2WO6/upconversion composites, the effect of key preparation parameters will be investigated, including precursor concentrations, feedstock ratios, solvents, temperature and time. Various characterization techniques will be used to analyze the chemical property and surface structure of the as-prepared composite photocatalysts. The effect of crystal structure and surface property of Bi2WO6/upconversion materials on the photocatalytical performance will be identified. Furthermore, typical antibiotics will be selected as the target pollutants to evaluate the degradation efficiency of Bi2WO6/upconversion composites under the irradiation of solar light. The reaction mechanism of Bi2WO6/upconversion material will be explored. To further evaluate the application potential of solar light activated Bi2WO6/upconversion system in real wastewater treatment, the treatment performance will be optimized by adjusting the operation parameters. Moreover, the degradation and detoxification mechanism of antibiotics will be investigated in details, as well as the kinetic models and degradation routes. This study will provide solid evidence for evaluating the feasibility of application Bi2WO6/upconversion in wastewater treatment theoretically and practically.

英文关键词： Photocatalysis;Upconversion;Antibiotics;Degradation mechanism