新型金属氧酸铋纳米光催化剂的制备与应用研究

项目名称： 新型金属氧酸铋纳米光催化剂的制备与应用研究

项目编号： No.21503013

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 有机化学

项目作者： 余宇

作者单位： 北京交通大学

项目金额： 21万元

中文摘要： 利用纳米尺度与结构的光催化剂材料其高效性能制备清洁能源和降解环境污染物已成为材料、环境与能源领域的研究热点。以金属氧酸铋为代表的铋系光催化剂因其独特的电子结构和优异的性能，被认为是一种极具潜力的新型可见光响应型催化剂。本项目旨在以水热法、化学气相沉积等方法制备一系列具有独特纳米结构的双d10电子结构金属氧酸铋盐本体及其修饰、掺杂与复合材料，开展这些催化剂材料在清洁能源和环境治理方向的应用研究，并对其组成、结构、形貌、表面性质、光催化性能之间的联系展开研究，从机理上探讨材料光吸收性能、催化活性与稳定性的改善途径。基于以上的研究内容，拟提出构筑具有特定纳米结构与设计组分的新型金属氧酸铋盐材料的方法和技术，开发出若干种在可见光催化降解有机污染物、光(电)解水制氢、制氧、水全分解、还原二氧化碳等应用上具有优异性能的新型金属氧酸铋盐催化剂，并提出合理有效的改性方法和可供参考的光催化机理分析思路。

中文关键词： 光催化；金属氧酸铋；光降解；光解水；光催化还原二氧化碳

英文摘要： The degradation of environmental pollution and production of energy resources based on the photocatalysts with nanoscale structures and efficient performance have been becoming a hotspot in the research field of materials, environment and energy. Bismuth series photocatalysts, especially bismuth oxometallate, are regarded as a potential new type of visible light response photocatalysts, due to their unique electronic structure and outstanding ability. This project aims at synthesis of novel bi d10 electronic structured bismuth oxometallate materials with designed nanostructures, and their modified, doped, and composite derivatives by the methods of hydrothermal preparation, chemical vapor deposition (CVD), and so on. The as-prepared photocatalysts are then investigated in the application of production of energy resources (i.e. photocatalytic/photoelectrocatalytic H2/O2 production, water splitting, and CO2 reduction) and environmental conservation (i.e. degradation of dyes, POPs, and microbial contaminants). Mechanism study will be carried out by varieties of characterizations and analysis, to explore the relationship between composition, structure, morphology, surface properties and photocatalytic performance. Some effective methods improving light absorption, catalytic activity and stability will also be proposed.

英文关键词： photocatalysis;bismuth oxometallate;photodegradation;photocatalytic water splitting;photocatalytic CO2 reduction