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Journal of Nanomaterials
Volume 2015 (2015), Article ID 502424, 6 pages
http://dx.doi.org/10.1155/2015/502424
Research Article

Direct Preparation and Characterization of Copper Pentacyanonitrosylferrate Nanoparticles

Departamento de Física e Química, Faculdade de Engenharia de Ilha Solteira, Universidade Estadual Paulista (UNESP), Avenida Brasil Centro 56, 15385-000 Ilha Solteira, SP, Brazil

Received 23 November 2014; Accepted 17 December 2014

Academic Editor: Hassan Karimi-Maleh

Copyright © 2015 D. R. Do Carmo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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), X-ray 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  V and  V ( mV s−1; KCl 1.0 M), attributed to the redox process and [(CN)5NO]/[(CN)5NO], respectively. The graphite paste electrode with NCuNP presents electrocatalytic response for Sulfite determination.