コミュニケーション
Electrocatalytic Reduction of Dioxygen at Cetyltrimethylammonium Bromide Modified Carbon Paste Electrode
2004 年 72 巻 1 号 p. 5-8
詳細
2004 年 72 巻 1 号 p. 5-8
A cetyltrimethylammonium bromide modified carbon paste electrode (CTAB/CPE) was developed. The modification was based on the hydrophobic adsorption of CTAB on the surface of CPE. This electrode exhibited excellent catalytic activity toward the reduction of dioxygen (O2). Compared with the poor signals at bare CPE, O2 had much larger reduction current and more positive peak potential at CTAB /CPE, which may arise from the formation of a positively charged layer of CTAB on the surface of CPE. The effects of some parameters on the O2 reduction were examined, including electrolyte pH, amount of modifier, scan rate and composition of carbon paste. The preparation of this electrode not only produced a new chemically modified carbon paste electrode but also provided a useful sensor for the determination of O2.
