Abstract
The electrocatalytic oxidation of glucose at Au nanoparticles-modified highly oriented pyrolytic graphite (HOPG) electrode has been investigated, for the first time. Catalytic oxidation of glucose to gluconolactone was observed and an electro-oxidative pretreatment of the HOPG electrode showed a significant enhancement of the catalytic activity as a consequence of the significant change in the crystallographic orientations through enrichment in the Au(100) facets of the electrodeposited Au nanoparticles.