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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Influence of cationic and anionic micelles in the (sono)chemical synthesis of stable Ni(OH)(2) nanoparticles: ``In situ{''} zeta-potential measurements and electrochemical properties

Texto completo
Autor(es):
Lorenzen, Ana L. [1] ; Rossi, Thais S. [1] ; Riegel-Vidotti, Izabel C. [1] ; Vidotti, Marcio [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed Parana, Grp Pesquisa Macromol & Interfaces, Dept Quim, CP 19032, BR-81531980 Curitiba, Parana - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Applied Surface Science; v. 455, p. 357-366, OCT 15 2018.
Citações Web of Science: 1
Resumo

In this work, we report the synthesis of Ni(OH)(2) nanoparticles in the presence of the micelles formed by sodium dodecylbenzene sulfonate and cetyltrimethylammonium bromide. Key aspects about the particle formation and stability were studied by means of ``in situ{''} zeta-potential measurements during the formation and dissolution of the nanoparticles. It was found that the intense electrostatic interaction between the positively charged Ni(OH)(2) sheets and the negative DBS- micelles provides a remarkable colloidal and electrochemical stability, on the other hand, positively charged micelles presented weak interaction with Ni(OH)(2) . By this way, it is presented a comprehensive interpretation of the interaction of the surfactants during the formation and stability of Ni(OH)(2) nanoparticles based on the intense superficial electric charge of the nanoparticles and how the interfacial and electrochemical properties are affected by. Also, electrodes were modified by using Electrophoretic Deposition and properly characterized by Atomic Force Microscopy and cyclic voltammetry. (AU)

Processo FAPESP: 14/50867-3 - INCT 2014: Instituto Nacional de Ciência e Tecnologia de Bioanalítica
Beneficiário:Lauro Tatsuo Kubota
Linha de fomento: Auxílio à Pesquisa - Temático