钽基多孔纳米复合材料的制备及表面等离子体增强可见光催化制氢性能

项目名称： 钽基多孔纳米复合材料的制备及表面等离子体增强可见光催化制氢性能

项目编号： No.51272052

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 一般工业技术

项目作者： 李中华

作者单位： 哈尔滨工业大学

项目金额： 80万元

中文摘要： 我国钽资源丰富，开发钽基高性能可见光光催化剂，不但可以促进光催化制氢走向实际应用，还有助于将我国的钽资源优势转化为产业优势。本项目选取课题组自行开发的新型钽基多孔纳米材料为母体，利用多孔纳米材料的大比表面积和开放的内部空间优势，在其内部和表面组装具有表面等离子体共振效应的Ag@AgX，Au@AgX（X=Cl，Br，I）等纳米复合材料，拓展钽基多孔材料的光谱吸收范围，通过调变金属纳米粒子的种类、尺寸、形貌和晶面比例，实现钽基多孔材料对可见光的宽谱响应。在前期工作基础上，深入研究表面等离子体共振效应对钽基多孔复合材料光催化反应的影响规律，探索复合材料各组分间相互作用机制和载流子传输机理，揭示纳米金属表面等离子体共振效应对钽基多孔材料光催化性能影响的本质，着重考查表面等离子体共振效应与钽基多孔复合材料能带结构以及异质结势垒间的耦合作用，为高性能钽基可见光催化制氢材料的结构设计和理性合成打下基础。

中文关键词： 光催化剂；氧化钽；制氢；表面等离子体；多孔纳米材料

英文摘要： Due to the abundant tantalum resource in China, the development of tantalum-based high-performance photocatalysts driven visible light can not only promote the photocatalytic hydrogen production towards the practical application, but also help to accelerate the conversion from resourceful tantalum to corresponding industrial advantages. In this project, a new tantalum-based porous nanomaterials developed by our group is chosen as the mother material because of its large surface area and open interior space. To expand the spectral absorption range, the Ag@AgX and Au@AgX（X=Cl, Br, I）with surface plasmon resonance will be assembled into the internal and surface of the tantalum-based porous nanomaterials. Therefore, wide spectrum response in visible light range for the novel tantalum-based porous nanomaterials will be achieved through the modulation of the type, size and shape of the metal nanoparticles, and the proportion of the crystal facets. Based on our previous work, the effects of surface plasmon resonance on the photocatalytic reaction for the tantalum-based porous nanomaterials will be investigated in detail to reveal the mechanisms of the interaction among the various components, as well as the carrier transfer for the nanocomposites. Furthermore, the intrinsic principle of the effect for the nano-metal su

英文关键词： photocatalysts；hydrogen production；tantalum oxides；surface plasmon resonance；porous nanomaterials