Zhou, Hongjun Fan, Fu-Ren F. Bard, Allen J. Observation of Discrete Au Nanoparticle Collisions by Electrocatalytic Amplification Using Pt Ultramicroelectrode Surface Modification After growing a thin layer of oxide (PtO<sub><i>x</i></sub>) by anodization of a Pt electrode, it changed from catalytically active for electrochemical NaBH<sub>4</sub> oxidation into an inactive electrode. When held at a potential where the oxide film was maintained, collisions of individual 14 nm diameter Au nanoparticles (NPs) that catalyzed NaBH<sub>4</sub> oxidation were successfully observed as discrete current pulses (spikes or blips) for each NP interaction with the modified Pt electrode via amplification from NaBH<sub>4</sub> oxidation. The current response is affected by NP concentration and the applied potential. electrochemical NaBH 4 oxidation;NaBH 4 oxidation;Pt electrode;NP;Pt Ultramicroelectrode Surface ModificationAfter;14 nm diameter;oxide 2015-12-16
    https://acs.figshare.com/articles/journal_contribution/Observation_of_Discrete_Au_Nanoparticle_Collisions_by_Electrocatalytic_Amplification_Using_Pt_Ultramicroelectrode_Surface_Modification/2014041
10.1021/jz100963y.s001