Nano-confined synthesis of highly ordered mesoporous carbon and its performance as electrode material for electrochemical behavior of riboflavin (vitamin B2) and dopamine

摘要

Highly ordered mesoporous carbon (MC) has been synthesized from sucrose, a non-toxic and costeffectiveudsource of carbon. X-ray diffraction, N2 adsorption–desorption isotherm and transmissionudelectron micrograph (TEM) were used to characterize the MC. The XRD patterns show the formationudof highly ordered mesoporous structures of SBA15 and mesoporous carbon. The N2 adsorptiondesorptionudisotherms suggest that the MC exhibits a narrow pore-size distribution with high surfaceudarea of 1559 m2/g. The potential application of MC as a novel electrode material was investigatedudusing cyclic voltammetry for riboflavin (vitamin B2) and dopamine. MC-modified glassy carbonudelectrode (MC/GC) shows increase in peak current compared to GC electrode in potassiumudferricyanide which clearly suggest that MC/GC possesses larger electrode area (1.8 fold) comparedudwith bare GC electrode. The electrocatalytic behavior of MC/GC was investigated towards theudoxidation of riboflavin (vitamin B2) and dopamine using cyclic voltammetry which show largerudoxidation current compared to unmodified electrode and thus MC/GC may have the potential to beudused as a chemically modified electrode.