Electrocatalytic Oxidation of Uric Acid and Ascorbic Acid on L-cysteine Monolayer Modified Electrode

A three-dimensional L-cysteine (L-cys) monolayer assembled on gold nanoparticles (GNP) providing simultaneous detection of uric acid (UA) and ascorbic acid (AA) was studied in this work. An interestingly results was found during experiments, the L-cys monolayer-modified planar gold electrode presented a block effect on the oxidation of AA, which was facilitated by the three-dimensional L-cys monolayer attributed to its distinct structure.