Solvent mixture effect in the zinc hexacyanoferrate (III) nanoparticles: Synthesis, characterization and voltammetric application

• Main Author: Do Carmo, Devaney Ribeiro [UNESP]
• Publication Date: 2016
• Other Authors: Fernandes, Daniela Silvestrini [UNESP], Cumba, Loanda Raquel [UNESP], de Souza Magossi, Mariana [UNESP], dos Santos, Vanessa Solfa [UNESP]
• Format: Article
• Language: eng
• Source: Repositório Institucional da UNESP
• Download full: http://dx.doi.org/10.1016/j.materresbull.2016.08.034; http://hdl.handle.net/11449/173398
• topic: Chemical synthesis; Electrochemical properties; Electron microscopy; Nanostructures; X-ray diffraction

This work describes the preparation and characterization of size-controlled zinc hexacyanoferrate (III) nanoparticles (ZnH). They were prepared using different proportions of water/formamide in the complexation reaction of Zn2+ with [FeIII(CN)6]3−. The materials were characterized by Fourier Transform Infrared Spectroscopy (FT-IR), Ultraviolet-Visible Spectroscopy (UV–vis), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX) and Cyclic Voltammetry (CV). The cyclic voltammograms of the modified graphite paste electrode with ZnH-1, ZnH-2, ZnH-3 and ZnH-4 showed a well-defined redox couple with formal potential (Eθ′) = 0.94 ± 0.01 V (ν=20 mV s−1; KCl 1.0 M)) attributed to the redox process [FeII(CN)6]/[FeIII(CN)6] in the presence of Zn2+. The dependence of particle size on the detection of sulfite was verified.