金属酞菁(MPc)/电纺碳纳米纤维(CNFs)异质结材料的构筑及可见光催化性质研究

项目名称： 金属酞菁(MPc)/电纺碳纳米纤维(CNFs)异质结材料的构筑及可见光催化性质研究

项目编号： No.51302063

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 郭增彩

作者单位： 河北工程大学

项目金额： 25万元

中文摘要： 污水问题日益严重，光催化作用因其对污染物降解彻底、有效而被认为是处理污水问题的绿色途径。在各类光催化材料中，金属酞菁光催化剂在可见光区域有强烈的吸收，能利用太阳光有效降解各种有机污染物，从而解决了传统光催化剂对太阳能利用率低的难题，被广泛应用于污水处理方面。尽管如此，金属酞菁光催化剂在实际使用过程中的量子化产率和回收再利用率仍有待提高。本项目拟将金属酞菁(MPc)与一维电纺碳纳米纤维(CNFs)复合，构建MPc/CNFs异质结光催化材料。利用一维电纺碳纳米纤维高导电性能，易于捕获传输光生电子特性抑制酞菁光生电子和空穴的复合，从而提高光催化效率。同时，利用CNFs的长径比，错综交织成的纳米网毡结构易于自沉降的性能解决光催化材料的回收再利用难的问题。

中文关键词： 酞菁；异质结；光催化剂；碳纳米纤维；

英文摘要： Waste water problems are becoming more and more serious. Photocatalysis, as a "green" technique, offers great potential for complete elimination of toxic chemicals in the waste-water treatment through its efficiency and broad applicability. Among all kinds of photocatalyst，metal phthalocyanines might use sunlight as the energy source to degrade organic pollutions and widely used for waste-water treatment because of the intense absorption bands in the longer wavelength region of the visible light in a solar spectra. However, metal phthalocyanines suffer from considerable recombination of the photogenerated electron-hole pairs for low quantum yield and the difficulty in separating the nanostructural photocatalysts for large-scale applications. In this item, we plan to fabricate MPc/CNFs heterostructures. The one-dimensional CNFs have been widely used as ideal electron pathways owing to their good conductivity, which make it possible that electrons leaving from a depleted region based on the fact the CNFs have a higher work function than MPc into the CNFs could be captured and transported through highly conductive long CNFs. The synergistic effect between CNFs and MPc might lead to the high catalytic efficiency. Meanwhile, the MPc/CNFs nanofiber heterostructures could be reclaimed easily by sedimentation without a

英文关键词： phthalocyanines；heterostructure；photocatalyst；carbon nanofiber；