纳米TiO2/Mg2Ni复合材料的制备与光解水制氢储氢协同作用研究

项目名称： 纳米TiO2/Mg2Ni复合材料的制备与光解水制氢储氢协同作用研究

项目编号： No.21271187

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 唐有根

作者单位： 中南大学

项目金额： 88万元

中文摘要： 本项目主要研究具有宽光谱响应的改性纳米TiO2材料光解水制氢光催化剂和常温吸放氢Mg2Ni贮氢合金复合材料的制备及其制氢储氢协同作用。研制光解水制氢贮氢一体化材料，将光解水产生的氢即时储存起来，再通过可控途径得到高纯度氢气，集氢能生产与储存一体化；通过掺杂改性纳米TiO2材料宽光谱响应光解水制氢催化剂和纳米晶态与非晶态Mg2Ni贮氢合金复合材料的制备以及协同作用研究，制得高反应活性与宽光谱响应的光解水制氢、储氢一体化复合材料；建立光解水制氢与储氢一体化循环反应体系，连续产氢、储氢，并实现牺牲剂的循环使用；建立光解水制氢、储氢一体化复合材料检测评价方法；探讨宽光谱响应光解水催化剂材料结构与性能的关系及光解水制氢储氢复合材料光催化作用与储氢作用的协同关系。

中文关键词： TiO2；Mg2Ni型储氢合金；光催化制氢；光充电；

英文摘要： This project aims to prepare composites of nano-TiO2 photocatalyst and Mg2Ni hydrogen storage alloys where the nano-TiO2 photocatalyst can absorb visible light to split water to produce hydrogen and then the Mg2Ni hydrogen storage alloys can storage the in-situ produced hydrogen. We will investigate the synergetic effect of hydrogen generation and storage on such novel composites. We want to develop a simple and integrated technology for hydrogen generation and storage. It means that hydrogen can be stored in hydrogen storage alloy as soon as the photocatalytic hydrogen production happens, and the sacrificial agent will be recycled at the same time. It is necessary to modify the TiO2 photocatalyst so that it can be responsive to a wider range of the spectrum, particularly in the visible range. Since Mg2N alloy usually shows poor dynamic performance and cycling stability, we will also develop technologies to improve the properties of the hydrogen storage alloys. Then the effect between hydrogen productin and storage will be investigated to get a highly reactive composite material. An evaluation method will be developed to examine the comprehensive performance of this composite material such as hydrogen production rate, hydrogen storage capacity and stability. The co-relationship between structure and properties o

英文关键词： TiO2；Mg2Ni hydrogen storage alloy；photocatalytic hydrogen generation；Photo-assisted chargeability；