Self-assembled polyaniline nanotubes and nanoribbons/titanium dioxide nanocomposites

0345183 - ÚMCH 2011 RIV CH eng J - Journal Article
Radoičic, M. - Šaponjic, Z. - Nedeljkovic, J. - Ciric-Marjanovic, G. - Stejskal, Jaroslav
Self-assembled polyaniline nanotubes and nanoribbons/titanium dioxide nanocomposites.
Synthetic Metals. Roč. 160, 11-12 (2010), s. 1325-1334. ISSN 0379-6779. E-ISSN 0379-6779
R&D Projects: GA ČR GA202/09/1626
Institutional research plan: CEZ:AV0Z40500505
Keywords : nanocomposites * nanoribbons * nanostructures
Subject RIV: JI - Composite Materials
Impact factor: 1.871, year: 2010

Self-assembled polyaniline (PANI) nanotubes, accompanied with nanoribbons, were synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in an aqueous medium, in the presence of colloidal titanium dioxide (TiO2) nanoparticles of 4.5 nm size, without added acid. The morphology, structure, and physicochemical properties of the PANI/TiO2 nanocomposites, prepared at various initial aniline/TiO2 mole ratios, were studied by scanning (SEM) and transmission (TEM) electron microscopies, FTIR, Raman and inductively coupled plasma optical emission (ICP-OES) spectroscopies, elemental analysis, X-ray powder diffraction (XRPD), conductivity measurements, and thermogravimetric analysis (TGA). The electrical conductivity of PANI/TiO2 nanocomposites increases in the range 3.8 × 10−4 to 1.1 × 10−3 S cm−1 by increasing aniline/TiO2 mole ratio from 1 to 10.
Permanent Link: http://hdl.handle.net/11104/0005945