类三明治结构Ag/MoS2/Ag-AgBr NFs的构建及其在城市污水净化与能量回收耦合工艺中的应用

The project points out the problems of the water purification and resource recovery in China, a new visible-light driven photocatalysts will be developed to apply in the green and efficiency simultaneous degradation of municipal wastewater with hydrogen evolution, aiming at accelerating substance transformation and improving energy conversion efficiency. Furthermore, it also expounds the relationship between the nanomaterials structure and catalytic properties. The main research contents are as follows : (1) preparing the high-quality sandwich-type Ag/MoS2/Ag-AgBr NFs; (2) properly choosing each constituent unit for composited semiconductor system, subtly taking control of interface structure and macroscopic morphology, endowing multifunctional features for the powerful oxidation and reduction, in order to improve the efficiency of charge interface transport and increase the number of catalyst reaction active sites; (3)investigating the enrichment process and conversion regulation of organic contaminant molecules on the surface of the nanomaterials (4) opening up new approaches to improve energy conversion efficiency and quantum yield in the chemicals transformation and energy conversion processes. The research results will provide the studies on wastewater treatment and resource utilization with theoretical basis and technical support.

本申请针对城市污水净化和资源化利用问题，以实现城市污水净化与能量回收耦合工艺中的物质转化与能源转换效率的双重目标，开发出可用于绿色、高效光催化净化污水协同制氢的可见光诱导新型光催化剂，并阐述纳米催化材料的微观结构与催化性能之间的构效关系。具体研究：（1）制备高质量的类三明治结构Ag/MoS2/Ag-AgBr NFs；（2）精细控制复合材料各组分单元之间的界面结构和宏观形态结构，赋予其强氧化能力和强还原能力的多功能特征，提高界面的电荷传输效率，增加催化剂的反应活性位点数量；（3）研究有机污染物分子在催化材料表面上富集演变过程及转化规律；（4）开辟提高物质转化和能量转换过程中能量转化效率和量子产率的新途径。以上研究将废水资源化利用的研究提供一定的理论依据和技术支持。

针对能源短缺以及水环境污染严重的问题，本项目设计开发了多种MoS2和TiO2基新型催化剂，应用于污水中有机污染物的快速去除和高效产氢，主要研究内容包括：（1）通过对MoS2催化剂的结构调控与优化，暴露更多活性位点，提高催化剂的产氢效率；（2）通过合理设计，制备出多种TiO2复合材料，提高电荷传输效率以及可见光利用能力，实现催化剂的高效产氢及有机污染物的快速去除；（3）阐述催化剂的微观结构和催化性能之间的构效关系；（4）揭示催化剂高效产氢以及去除有机污染物的内在机理。以上研究为水中有机污染物的去除以及能源资源化提供一定的理论依据和技术支持。