项目名称： 新型宽光谱响应一维光电复合纳米纤维材料的构筑及应用机制研究

项目编号： No.61775024

项目类型： 面上项目

立项/批准年度： 2018

项目学科： 无线电电子学、电信技术

项目作者： 董斌

作者单位： 大连民族大学

项目金额： 16万元

中文摘要： 水污染的日益加剧严重的威胁着人民的生活环境与身体健康。半导体光催化技术因其具有降解矿化污水中污染物、还原污水中重金属离子和杀灭污水中细菌等性能，使其在环境治理方面有着广阔的应用前景。然而，较低的太阳光能利用率、较差的光量子效率以及分离回收性能差等缺点一直是困扰光催化剂产业化进程的瓶颈问题。为此，本课题拟将贵金属纳米粒子、稀土红外上转换发光纳米粒子与钒酸盐半导体电纺纳米纤维复合，利用表面等离激元效应、红外上转换发光特性、结合电纺纳米纤维材料的一维纳米结构特性，获得具有太阳光能利用率高、光量子效率高、对污染物吸附强和良好回收再利用特性的环境友好型高效表面等离激元光催化剂。

中文关键词： 一维纳米纤维；红外上转换；表面等离激元；光催化

英文摘要： With fast development of industry and economy, arbitrary discharge of the industrial wastewater and household waste have caused serious environmental water pollution, which greatly threatens the daily life of human being in modern society. Photocatalysis, as an environmentally friendly “green” technique, has been attracted wide attention in the field of environmental protection, because it can remove the organic pollutants, heavy metal ions, and bacteria in the wastewater using active semiconductors as the photocatalysts under light irradiation with the photon energy either higher than or equal to the band gaps of photocatalysts. However, the practical application of these semiconductors as photocatalysts is still impeded by the drawbacks of such narrow light absorption region, poor quantum yields, limited specific surface areas, and so on. To solve the above problems, we herein plan to fabricate the noble metal/upconversion nanoparticles composite electrospun nanofibers. It is expected to obtain a new kind of one-dimensional (1D) plasmonic photocatalysts with wide photoresponse range and high photocatalytic efficiency by taking the advantages of rare earth upconversion property of nanoparticles, Surface-Plasmon-Resonance (SPR) effect of noble metal nanoparticles, good visible-light photocatalytic activity, and high specific surface areas of electrospun nanofibers.

英文关键词： One Dimensional Nano Fiber;Infrared Upconversion;Surface Plasmon;Photocatalysis