Journal
SILICON
Volume 12, Issue 5, Pages 1111-1123Publisher
SPRINGER
DOI: 10.1007/s12633-019-00215-4
Keywords
Metallosilsesquioxanes; Titanium (IV) silsesquioxane; Nickel hexacyanoferrate (III); Ciclic voltammetry; Sulphite; Dipyrone
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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 degrees ' = +0.53 V attributed to Fe-II(CN)(6) / Fe-III(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.
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