Characterization of a carbon paste electrode containing organically modified nanostructure silica : Application to voltammetric detection of ferricyanide
作者： Reza Ojani , Ebrahim Ahmadi , Jahan-Bakhsh Raoof , Fatemeh Mohamadnia
DOI: 10.1016/J.JELECHEM.2008.10.018
关键词:
摘要: Abstract A carbon paste electrode modified with aminopropyle-grafted mesoporous silica (APS) material was evaluated as an electrochemical sensor for ferricyanide species in aqueous medium. This solid characterized by Fourier transform infrared (FTIR) spectroscopy. Electrochemical detection achieved after protonation of N-bearing groups on APS located at the surface giving positive charge and accumulation anion open circuit. The influence various experimental parameters such solution pH pretreatment step, conditions, composition time upon response were investigated. differential pulse voltammetry (DPV) method showed linear dynamic rang 2 × 10−7–1 × 10−5 M concentration. limit (2σ) determined 8 × 10−8 M. new applied to analysis electroplating waste.
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