项目名称: 单晶多元金属氧化物纳米材料的相对高温水热法控制制备及其可见光分解水制氢性能研究
项目编号: No.21301076
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 数理科学和化学
项目作者: 肖立松
作者单位: 江苏大学
项目金额: 24万元
中文摘要: 太阳能光解水制氢技术是获取氢能的最理想途径之一。可见光响应多元氧化物分解水制氢光催化剂因其稳定性高、价带连续、可见光吸收范围宽的优点在该技术研究领域中占有重要地位。提高制氢效率以达到实际应用水平是该类材料研究面临的主要问题。本项目拟利用新型水热反应设备,深入研究相对高温水热法(220-280 oC)反应条件对具有可见光分解水制氢功能单晶多元氧化物纳米材料生长结构参数及表面性质的调控规律;单相多元氧化物纳米材料结构参数与与表面性质对可见光分解水性能的影响规律;可见光分解水过程中单晶多元氧化物纳米材料光生电子、空穴激发、迁移与转化过程的调控规律及其反应的热力学与动力学规律,以实现可见光响应型单晶多元氧化物纳米光催化体系的筛选和优化,为开发具有实际应用价值的光分解水催化奠定坚实的理论基础和提供合适的结构体系。
中文关键词: 单晶多元金属氧化物纳米材料;相对高温水热法;控制制备;可见光;分解水制氢
英文摘要: Solar water splitting for H2 production technology is one of the most promising approaches to realize a hydrogen energy economy. The single-phase complex oxides nanostructures with visible-light-driven photocatalytic hydrogen production plays an important role in the development of technology because of their advantages in high stability, smooth energy band, broad visable-light absorption range. However, the low conversion efficency always hinder stongly their application. In this project, we will use the advanced hydrothermal autoclaves to deeply study the effects of reaction conditions on the growth of single-crystalline complex oxides nanostructures; the controllable regulation and kinetic (or thermodynamic) law of excitation, migration and transformation of photon-generated carrier of nanostructres in the process of photocatalytic hydrogen production, realize the selection and optimization of high-efficency single-crystalline complex oxides nanostructures with visible-light-driven photocatalytic hydrogen production, establish a steady theoretical foundation and provide a suitable structure system for the development of ideal photocatalysts with water splitting for hydrogen production.
英文关键词: Single-crystalline Complex;Relatively High-Temperature Hydrothermal Synthesis;Controlled Preparation;Visible-Light-Driven;Photocatalytic Hydrogen