Preparation in-situ of carbon nanotubes/polyaniline modified electrode and application for ascorbic acid detection
作者： Yuan Fang , Qi Jiang , Min Deng , Yan Tian , Qi Wen
DOI: 10.1016/J.JELECHEM.2015.07.039
关键词:
摘要: Abstract A novel grown in-situ carbon nanotube/polyaniline chemically modified electrode (GSCNT/PANI-CME) was synthesized for the electrochemical detection of ascorbic acid (AA). First, nickel catalyst obtained by direct current deposition on a graphite (GE) surface. Second, CNTs were to obtain (GSCNTs-CME) catalytic chemical vapor deposition. Third, treated carboxylate and remove particles. Finally, PANI prepared polymerization GSCNTs-CME GSCNTs/PANI-CME. The electrodes characterized scanning electron microscopy cyclic voltammetry. results showed that grew uniformly GE surface original tubular structure remained. coated in composite, which typical three-dimensional network structure. GSCNTs/PANI-CME exhibited an excellent electrocatalytic activity AA. oxidation peak increased linearly with concentration AA range from 1.0 × 10 − 6 mol L − 1 4.5 × 10 − 4 , limit − 7 (S/N = 3). experimental data selective, stable reproducible. recoveries between 97.4% 102.1%.
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