Direct Preparation and Characterization of Copper Pentacyanonitrosylferrate Nanoparticles

Autor(es)

Do Carmo, D. R. ; Souza, M. M. ; Bicalho, U. O. ; Dos Santos, V. S. ; Souza, J. P. ; Silvestrini, D. R.

• Tipo de documento: Artigo Científico
• Fonte: Journal of Nanomaterials; v. 2015, p. 6-pg., 2015-01-01.

Resumo

The present work describes the preparation of nanoparticles of copper pentacyanonitrosyl complexes starting from the compound sodium nitroprusside. Copper pentacyanonitrosylferrate (NCuNP) nanoparticles were successfully synthesized by using deionized water and formamide as solvent. The material was characterized by Fourier-transforming infrared spectroscopy (FT-IR), Xray diffraction (XRD), ultraviolet-visible (UV-Vis) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and cyclic voltammetry (CV). The results revealed that the electronic spectra of NCuNP exhibited a broad intervalence charge transfer band at 685 nm. An XRD peak broadening pattern of the NCuNP was verified, indicating a particle decrease when formamide is used. The particle size of NCuNP is estimated to be 80 nm. The cyclic voltammogram of the modified graphite paste electrode with NCuNP showed two redox pairs with formal potentials E-theta' = 0.36 V and E-theta' = 0.78 V (nu = 20mV s(-1); KCl 1.0 M), attributed to the redox process Cu-I/Cu-II and [Fe-II(CN)(5)NO]/[Fe-III(CN)(5)NO], respectively. The graphite paste electrode with NCuNP presents electrocatalytic response for Sulfite determination. (AU)

• Processo FAPESP: 12/05438-1 - Desenvolvimento de novos silsesquioxanos nanoestruturados híbridos organofuncionalizados: preparação, caracterização e suas aplicações como sensores de compostos e íons de interesse ambiental e biológico
• Beneficiário: Devaney Ribeiro Do Carmo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 03/12882-6 - Dendrímeros de silsesquioxanos e octaamino poli(propileno) imina modificados com triclorotriazina: síntese, caracterização e aplicações
• Beneficiário: Devaney Ribeiro Do Carmo
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 12/11306-0 - Quantificação eletroquímica de analitos de interesse ambiental e biológico, empregando novos materiais preparados a partir de silsesquioxanos funcionalizados.
• Beneficiário: Daniela Silvestrini Fernandes
• Modalidade de apoio: Bolsas no Brasil - Doutorado