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Electrocatalytic oxidation of vitamin B 6 by 4‐hydroxy‐2,2,6,6‐tetramethylpiperidine‐ N ‐oxyl
Author(s) -
Li Yan,
Wen XiaoLin,
Liu ZhongLi
Publication year - 2004
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20040221128
Subject(s) - chemistry , electrochemistry , cyclic voltammetry , pyridoxine , vitamin b6 , catalysis , glassy carbon , inorganic chemistry , ion , vitamin , electrode , medicinal chemistry , organic chemistry , biochemistry
The electrochemistry of pyridoxine (vitamin B 6 , VB 6 ) was studied by cyclic voltammetry at a glassy carbon electrode. The electrochemical response of VB 6 could be significantly enhanced by using 4‐hydroxy‐2,2,6,6‐tetra‐methylpiperidine‐ N ‐oxyl (HO‐TEMPO) as a mediator via an electrocatalytic EC' mechanism with the oxoammonium ion of HO‐TEMPO as the active oxidant. The catalytic rate constant was determined to be 5.4×10 3 (mol*L −1 ) −1* s −1 by using chronomperometq.