Polyaniline-Pt and polypyrrole-Pt nanocomposites: Effect of supporting type and morphology on the nanoparticles size and distribution

Autor(es)

Lemos, Hugo G. ^[1] ; Santos, Sydney F. ^[1] ; Venancio, Everaldo C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Abc, Ctr Engn Modelagem & Ciencias Sociais Aplicadas C, BR-09210580 Santo Andre, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Synthetic Metals; v. 203, p. 22-30, MAY 2015.
• Citações Web of Science: 16

Resumo

The size and the distribution of platinum nanoparticles on the polyaniline-Pt (PANI-Pt) and polypyrrole-Pt (PPy-Pt) nanocomposites are extremely sensitive to the polymer matrix morphology. This is observed when the polymer matrix morphology was changed from nanofibers to nanotubes. TEM results showed platinum nanoparticles with size diameter as low as 2 nm in the case of polpyrrole nanofiber and polyaniline nanofiber matrices. In addition, FTIR and UV-vis results showed that polyaniline matrix with different morphologies, nanofibers and nanotubes, presented different chemical structures, which resulted in a different size and distribution of the platinum nanoparticles, as it was observed from the SEM, platinum X-ray mapping and TEM results. The DSC thermal analysis results showed that the presence of platinum nanoparticles in the polymer matrix resulted in a greater thermal stability when compared to the polymer matrix. It was the first time that the effect of PANI and PPy morphology on the platinum dispersion and distribution is demonstrated. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 11/16615-9 - Desenvolvimento de nanocompósitos a base de polímeros eletrônicos orgânicos
• Beneficiário: Hugo Gajardoni de Lemos
• Modalidade de apoio: Bolsas no Brasil - Mestrado