Related Experiment Video
Updated: Feb 2, 2026

Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves
Published on: April 10, 2015
Electrocatalytic Oxidation and Determination of Nitrite at Multi-Walled Carbon Nanotubes Modified Electrode
Jianxiang Jin1, Bo Xiao1, Jinlong Yan1
1School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu Province, 224051, China.
Abstract:
Electrocatalytic oxidation of nitrite at multi-walled carbon nanotubes (MWCNTs) modified electrode was investigated by using voltammetric techniques. The kinetic parameters such as diffusion coefficient (D), standard heterogeneous rate constant (ks) and catalytic constant (k) were studied by chronocoulometry and chronoamperometry. The corresponding parameters for D, ks, and k were caculated to be 3.56×10-5 cm² s-1, 6.29×10-3 cm s-1 and 7.02×10² M-1 s-1, respectively. The modified electrode was used for the determination of nitrite with a concentration range of 0.5 to 36 μM and a detection limit of 0.08 μM. The proposed method was successfully applied for the determination of nitrite in real samples of tap water and juice of pickled garlic.
More Related Videos
Related Concept Videos
Standard Electrode Potentials
Oxidation Numbers
Phase I Reactions: Oxidation of Carbon-Heteroatom and Miscellaneous Systems
In carbon-nitrogen systems, aliphatic and aromatic amines can undergo oxidative reactions. Secondary and tertiary amines, like those found in tricyclic antidepressants, can undergo N-dealkylation, a process that involves the oxidation of the alkyl group. In addition, oxidative...
Phase I Reactions: Oxidation of Aliphatic and Aromatic Carbon-Containing Systems
Oxidation reactions are fundamental in aromatic carbon-containing systems. An example is the hydroxylation of phenobarbital, a process that transforms it into...
Determining the pH of Salt Solutions
Pyruvate Oxidation
First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...

