Surface properties of polyaniline/nano-TiO2 composites

被引：160

作者：

Li, XW

Wang, GC

Li, XX

Lu, DM

机构：

[1] E China Univ Chem Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

[2] Nanjing Univ Sci & Technol, Dept Chem, Nanjing 210094, Peoples R China

[3] Nanjing Univ Sci & Technol, Optoelect Engn Res Ctr, Nanjing 210094, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2004年 / 229卷 / 1-4期

关键词：

polyaniline; nano-TiO2; interface; composite;

D O I：

10.1016/j.apsusc.2004.02.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Polyaniline/nano-TiO2 composite was prepared by polyaniline for the surface modification of nano-TiO2 particles, and was characterized via Fourier-transform infrared spectra, UV-Vis-NIR spectrophotometer, wide-angle X-ray diffraction, thermo-gravimetric analysis and transmission electron microscope, as well as conductivity. Surface area, total pore volume and pore size distribution of nano-TiO2 particles and polyaniline/nano-TiO2 composite particles were also measured. The results of spectroanalysis illustrate that polyaniline and nano-TiO2 particles are not simply blended or mixed up. There is a strong interaction between polyaniline macromolecule and nano-TiO2 particles. Synthesized polyaniline was deposited on the surface of nano-TiO2 particles, forming a core-shell structure. The dimension of polyaniline/nano-TiO2 composite particles is in the range 25-40 nm. Polyaniline/nano-TiO2 Composite contains 38% conducting polyaniline by mass, for which conductivity reaches 0.75 S cm(-1) at 25 degreesC. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：395 / 401

页数：7

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