The electrochemical behavior of the film of single wall carbon nanotube(SWNT) functionalized with carboxylic acid group was studied extensively at the glassy carbon(GC) electrode. One stable couple of waves correspond...The electrochemical behavior of the film of single wall carbon nanotube(SWNT) functionalized with carboxylic acid group was studied extensively at the glassy carbon(GC) electrode. One stable couple of waves corresponding to the redox of the carboxylic acid group, which was supported by the IR experiments, was observed. The electrode process involved four electrons, while the rate determining step was a one-electron reduction. The SWNT film modified electrode showed nice electrocatalytic behaviors toward the oxidations of some biomolecules such as dopamine, epinephrine and ascorbic acid.展开更多
The multi-wall carbon nanotubes（MWNTs）modified glassy carbon electrode（CNT/GCE）was fabricated and its electrocatalytic activity of hydroquinone was investigated.It was found that the electrochemical behaviors were...The multi-wall carbon nanotubes（MWNTs）modified glassy carbon electrode（CNT/GCE）was fabricated and its electrocatalytic activity of hydroquinone was investigated.It was found that the electrochemical behaviors were greatly improved at CNT/GC,indicating that the redox of hydroquinone could be catalyzed at CNT/GC.The kinetic parameters of thisprocess were calculated.The diffusiong coefficient was 1.7×10-5cm2·s-1,the heterogeneouselectron transfer rate constant k was 0.678s-1,α value was 0.538 and electron transfer numbers was 2.展开更多
文摘The electrochemical behavior of the film of single wall carbon nanotube(SWNT) functionalized with carboxylic acid group was studied extensively at the glassy carbon(GC) electrode. One stable couple of waves corresponding to the redox of the carboxylic acid group, which was supported by the IR experiments, was observed. The electrode process involved four electrons, while the rate determining step was a one-electron reduction. The SWNT film modified electrode showed nice electrocatalytic behaviors toward the oxidations of some biomolecules such as dopamine, epinephrine and ascorbic acid.
文摘The multi-wall carbon nanotubes（MWNTs）modified glassy carbon electrode（CNT/GCE）was fabricated and its electrocatalytic activity of hydroquinone was investigated.It was found that the electrochemical behaviors were greatly improved at CNT/GC,indicating that the redox of hydroquinone could be catalyzed at CNT/GC.The kinetic parameters of thisprocess were calculated.The diffusiong coefficient was 1.7×10-5cm2·s-1,the heterogeneouselectron transfer rate constant k was 0.678s-1,α value was 0.538 and electron transfer numbers was 2.
