硫族半导体纳米晶/MOFs复合材料的制备及光解水制备氢气性能研究

项目名称： 硫族半导体纳米晶/MOFs复合材料的制备及光解水制备氢气性能研究

项目编号： No.21471081

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无机化学

项目作者： 包建春

作者单位： 南京师范大学

项目金额： 90万元

中文摘要： 本项目制备具有不同纳米结构（形貌、尺寸及相结构）的硫族半导体，并根据不同禁带宽度和微观结构进行复合，合成出硫族半导体复合物或异质结结构。将具有较好光稳定性的多金属氧簇引入催化剂体系，以金属-有机框架（MOFs）为模板或载体，制备出不同种类的硫族半导体纳米晶/ MOFs杂化材料催化剂。这类催化剂可望具有较高的可见光/近红外光利用效率、高的光稳定性和高催化性。系统研究这类硫族半导体纳米晶/ MOFs杂化材料作为催化剂在光解水制氢气上的性能。期望可以解决目前光催化剂可见光利用率低、分散性差、产氢效率较低以及光稳定较差等不足。探讨硫族半导体纳米粒子种类、结构及其同多金属氧簇复合对可见光下光解水制氢量子产率、光稳定性的影响。开发出具有较好产氢效率并可多次重复利用的先进催化剂，为光解水制备氢气的应用提供理论和实验依据。

中文关键词： 光解水；硫族半导体；金属-有机框架；纳米催化剂；复合材料

英文摘要： This project aims to prepare chalcogenide semiconductors which show different morphologies and sizes, and synthesis chalcogenide semiconductor compounds or heterojunction structures by combining different band gaps and microstructures. Polyoxometalates with the better photocatalytic stability were introduced the catalyst system. Various kinds of chalcogenide semiconductor nanocrystal/metal-organic framework (MOF) hybrid materials will be constructed by using MOFs as the templates or supports. This kind of catalyst will show a high visible light or near infrared light utilization efficiency, and also exhibit interesting properies which combine the light stability of polyoxometalate-based compounds and high catalytic activity of semiconductors. The properties of the clalcogenide semiconductors/MOFs hybrid materials in the photocatalytic splitting of water for the preparation of hydrogen gas will be investigated in detail. We hope to solve some technical problems, such as the catalysts with low visible light utilization, poor dispersibility, low efficiency of hydrogen production, poor light stability and so on, during in the process of photocatalytic splitting of water into hydrogen.The project will explore the types and structures of nanoparticles, the complex of polyoxometalate-based crystalline materials on the performance of quantum yield, light stability in photocatalytic decomposition of water into hydrogen. The excellent catalysts will be prepared with high hydrogen production efficiency and recycling use, which can provide theoretical and experimental basis for development and application of photocatalytic splitting of water into hydrogen.

英文关键词： photocatalytic water splitting;chalcogenide semiconductor;metal-organic framework;catalyst;composite material