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Title: Physical-chemical effects of nanoparticles on electropolymerized polyaniline.
Authors: Carvalho Júnior, José Agenor
Barboza, Ana Paula Moreira
Machado, Giovanna
Neves, Bernardo Ruegger Almeida
Oliveira, Alan Barros de
Batista, Ronaldo Junio Campos
Araújo, Fernando Gabriel da Silva
Soares, Jaqueline dos Santos
Manhabosco, Taíse Matte
Keywords: Electrochemistry
Issue Date: 2021
Citation: CARVALHO JÚNIOR, J. A. et al. Physical-chemical effects of nanoparticles on electropolymerized polyaniline. Biointerface Research in Applied Chemistry, v. 12, n. 5, p. 5996-6009, 2021. Disponível em: <>. Acesso em: 06 jul. 2022.
Abstract: The incorporation of nanoparticles on polymer films is possible to obtain materials with desired properties. In the present work, we address the physical-chemical influence of nanoparticles in polymer films by producing and characterizing polyaniline hybrids with SiO2 and Au nanoparticles and comparing them with films with TiO2 nanoparticles. The hybrid films were characterized by SEM, EDS, UV-Vis, AFM, Raman, and cyclic voltammetry. Unlike TiO2 nanoparticles, SiO2 and Au nanoparticles do not promote any noticeable change in polyaniline oxidation state in less acid environments (pH 5.9 and 6.15). However, in those environments, the presence of nanoparticles significantly increases the film's conductivity. At a pH of 1.5 and 3.9, all three kinds of nanoparticles are screened by ions from the solution diminishing their physical-chemical effects on polyaniline. Thus, our results suggest that, in general, nanoparticles don't have any physical-chemical effects on polyaniline films when deposited in acid enough environments but can change their physical and chemical properties when deposited in less acid environments.
ISSN: 2069-5837
Appears in Collections:DEFIS - Artigos publicados em periódicos

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