The preparation and electrochemical characteristics of oxidized boron-doped diamond electrode modified by ruthenium tris(2,2′)bipyridyl (Ru(bpy) 33+) are described. The Ru(bpy)3 3+-modified boron-doped diamond electrode has strong electrocatalytic effects on the redox of Vitamin B6 (VB6). The oxidization and reduction peak potentials of VB6 are 167.6 and -113 mV, respectively. In the presence of a large amount of Vitamins B1 (VB1) and B2 (VB2), the redox peak potentials of VB6 shift slightly while VB1 and VB2 are not reduced or oxidized on the modified electrode. The catalytic mechanism ...
