Citrate-Capped Hybrid Au-TiO(2) Nanomaterial for Facile and Enhanced Electrochemical Hydrazine Oxidation

[Image: see text] Effective and facile electrochemical oxidation of chemical fuels is pivotal for fuel cell applications. Herein, we report the electrocatalytic oxidation of hydrazine on a citrate-capped Au-TiO(2)-modified glassy carbon electrode, which follows two different oxidation paths. These two pathways of hydrazine oxidation are ascribed to occur on Au and the activated TiO(2) surface of the Au-TiO(2) hybrid electrocatalyst. This activation was achieved through molecular capping of the Au-TiO(2) surface by citrate, which leads to favorable hydrazine oxidation with a lower Tafel slope compared to that of the clean surface of the respective materials, that is, Au and TiO(2).