Artículos de revistas
Electrochemical Behavior of Titanium (IV) Silsesquioxane Occluded in the MCM-41 Cavity and their Application in the Electro-Oxidation of Sulphite and Dipyrone Compounds
Fecha
2019-01-01Registro en:
Silicon.
1876-9918
1876-990X
10.1007/s12633-019-00215-4
2-s2.0-85068113724
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
Titanium (IV) silsesquioxane was occluded in the cavities of a mesoporous silica MCM-41. The material was chemically modified with nickel hexacyanoferrate (III) (named MTTiPNiH) and subsequently characterized by spectroscopic techniques: Fourier Transform Infrared, X-ray Dispersive Energy Spectroscopy, Scanning Electron Microscopy and cyclic voltammetry. The voltammetric studies of MTTiPNiH was obtained using a graphite paste electrode which was possible to observe one well-defined redox pair with formal potential E°′ = +0.53 V attributed to FeII(CN)6 / FeIII(CN)6 in the presence of Ni2+ ions. As an application, the graphite paste electrode modified with MTTiPNiH was tested for sulphite and dipyrone detection.