本文已被：浏览 2925次 下载 1次
投稿时间：2012-09-25 修订日期：2012-11-04
投稿时间：2012-09-25 修订日期：2012-11-04
中文摘要: 采用以N-二甲基甲酰胺（DMF）为分散剂的TiO2溶胶与聚丙烯腈（PAN）的DMF溶液共混并在聚四氟乙烯模具中浇铸成膜，然后将膜进行预氧化和碳化，制备了碳/纳米TiO2复合催化材料并对其结构进行了表征。结果表明，锐钛型TiO2粒子以10~30 nm的尺度均匀分散和镶嵌在具有乱层石墨结构的碳基底中。随着PAN基中TiO2含量的增加，复合膜表面的TiO2含量增加，但低于其内部含量，同时TiO2的晶粒发生聚并，粒子尺寸增加。乱层石墨结构碳的存在对TiO2由锐钛型转变为金红石型的相变过程有抑制作用。
Abstract:The composite solutions were prepared by mixing the titanium dioxide sol in N, N dimethyl formamide (DMF) with the polyacrylonitrile (PAN) solution of DMF. The well-mixed solutions were then casted in a polytetrafluoroethylene mould to form membranes. After pre-oxidation and carbonization processes the carbon/nano-TiO2 composite catalytic materials were obtained and characterized. The results showed that the anatase TiO2 particles in 10～30 nm diameter were dispersed and inlaid in the carbon matrix with turbostratic graphite structure. With the increase of TiO2 content in PAN basement the surface TiO2 content of the composite membrane increases and the particles scale also increases. But the surface TiO2 content of the composite membrane is lower than that in interior. The turbostratic graphite hinders the phase transition of anatase TiO2 to rutile.
文章编号：201200733 中图分类号： 文献标志码：
基金项目:无
| Author Name | Affiliation |
| Cheng Xu | Textile Research Inst.,Sichuan Univ. |
| Li Yanwen | Textile Research Inst.,Sichuan Univ. |
| Du Zongliang | Textile Research Inst.,Sichuan Univ. |
作者简介:
引用文本：
成煦,李艳稳,杜宗良.碳/纳米TiO2复合材料的制备与表征[J].工程科学与技术,2013,45(1):215-221.
Cheng Xu,Li Yanwen,Du Zongliang.Preparation and Characterization of the Carbon/Nano Titanium Dioxide Composite Materials[J].Advanced Engineering Sciences,2013,45(1):215-221.
引用文本：
成煦,李艳稳,杜宗良.碳/纳米TiO2复合材料的制备与表征[J].工程科学与技术,2013,45(1):215-221.
Cheng Xu,Li Yanwen,Du Zongliang.Preparation and Characterization of the Carbon/Nano Titanium Dioxide Composite Materials[J].Advanced Engineering Sciences,2013,45(1):215-221.