铋基稀土固溶体光催化剂的协同作用及产氢性能研究

项目名称： 铋基稀土固溶体光催化剂的协同作用及产氢性能研究

项目编号： No.51262028

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 王其召

作者单位： 西北师范大学

项目金额： 49万元

中文摘要： 本项目主要是面向一种可持续，可再生的氢能源为研究对象，通过光催化技术使太阳能直接转化为氢能。主要研究内容包括：固溶体光催化剂Bi1-xMxVO4(M= La, Sm, Nd, Gd, Eu, Y, Dy)中铋元素和稀土元素在光解水制氢中的协同作用研究；双助催化剂种类、形貌及负载方法对光解水制氢效率的影响及在电子空穴分离中的机理；Bi6s电子在铋基稀土固溶体中对价带的贡献；利用计算机理论模拟计算和光谱学技术研究光催化剂的能带结构和电子结构。通过本研究，对稀土元素与铋元素的协同作用和双助催化剂对光解水效率提高的内在机理能有更深层次的理解，能够确定Bi6s电子在价带中所起的作用，并对固溶体调控能带结构获得可以完全分解水产氢产氧的光催化剂和光催化反应机理提供借鉴和指导意义。

中文关键词： 光催化；助催化剂；氢能；；

英文摘要： Main target of this project is that we used a sustainable, renewable hydrogen energy as the research object, and make solar energy directly into hydrogen by photocatalytic technology. The main research contents include: photocatalytic water splitting into hydrogen and research on synergistic of Bi/M with solid solutions of Bi1-xMxVO4 (M = La, Sm, Nd, Gd, Eu, Y, Dy) photocatalysts; dual co-catalyst kinds, morphology, preparation methods have influence on efficiency of photocatalytic water splitting for H2 evolution and mechanism in electron-hole separation; the contribution of valence band electrons of Bi6s in bismuth-based rare-earth solid solution; using computer simulation calculation and spectroscopy technology to study band structure and electronic structure. Through this research, we can have deeper understanding on the internal mechanism of rare earth elements, bismuth element synergy and dual cocatalyst for improving the efficiency of photocatalytic water splitting. We also can determine Bi6s play a role in the valence band, and be able to provid reference and guiding significance for band-gap engineering of solid solution to obtain photocatalyst which can completely photocatalytic split water into H2 and O2 and the photocatalytic reaction mechanism.

英文关键词： Photocatalytic；Cocatalyst；Hydrogen；；