项目名称: 三维开放微纳结构卤氧化铋(BiOX)/电纺碳纳米纤维(CNFs)异质结材料的构筑及其可见光催化性能研究
项目编号: No.51272041
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: 邵长路
作者单位: 东北师范大学
项目金额: 80万元
中文摘要: 设计和合成高效可见光催化材料对光催化技术走向实用化具有重要意义。本项目拟采用软化学方法、以电纺碳纳米纤维(CNFs)为基体,构筑卤氧化铋(BiOX)/电纺碳纳米纤维(CNFs)异质结材料,利用CNFs良好的电荷输运性能,提高其光生电子-空穴对的分离效率和光催化效率,利用CNFs独特的纤维网毡结构,提高其可分离和重复使用性能。研究化学反应条件对BiOX/CNFs异质结材料的化学组成、形貌、微观结构的影响,获得具有三维开放微纳结构特征的异质结材料;研究BiOX/CNFs异质结材料的光催化机理,研究BiOX/CNFs异质界面之间的相互作用和光生电荷的传输过程,揭示异质结材料体系的光催化协同作用机制,获得同时具有高活性和良好使用性能的可见光催化材料。本课题的研究将为设计合成新型光催化材料及探索光催化技术走向实用化提供新的思路和奠定实验基础。
中文关键词: 卤氧化铋;碳纳米纤维;异质结构;光催化;静电纺丝
英文摘要: The design and synthesis of visible light photocatalytic materials with high efficiency is of great significance to promote the photocatalytic technology practicality. The project intends to construct bismuth oxyhalide (BiOX)/electrospun carbon nanofibers (CNFs) heterostructures based on the electrospun carbon nanofibers (CNFs) as supports through soft chemical method. Especially, the good charge transport properties of CNFs is benefit to improving the photogenerated electron-hole pair separation efficiency and photocatalytic efficiency. And,the CNFs with unique nanofibers network structure could improve its performance of separation and reuse. In this project, the chemical composition, morphology and microscopic structure of the BiOX/CNFs heterostructure will be investigated by adjusting the chemical reaction conditions, expecting to obtain BiOX/CNFs heterostructure with 3D open hierarchical micro-nano structure. And, by exploring the interface interaction of BiOX and CNFs of the BiOX/CNFs heterostructure and transfer processing of photoinduced carriers, the mechanism of heterostructure synergistic system will be revealed. As a result, a kind of new materials with high visible photocatalytic activity and good performance of separation and reuse might be obtained. The research of this subject is expected to open
英文关键词: Bismuth oxyhalide;Carbon nanofibers;Heterostructures;Photocatalysis;Electrospinning