Stochastic electrochemistry with electrocatalytic nanoparticles at inert ultramicroelectrodes—theory and experiments
- 28 February 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 13 (12), 5394-5402
- https://doi.org/10.1039/c0cp02543g
Abstract
Collisions of several kinds of metal or metal oxide single nanoparticles (NPs) with a less catalytic electrode surface have been observed through amplification of the current by electrocatalysis. Two general types of current response, a current staircase or a current blip (or spike) are seen with particle collisions. The current responses were caused by random individual events as a function of time rather than the usual continuous current caused by an ensemble of a large number of events. The treatment of stochastic electrochemistry like single NP collisions is different from the usual model for ensemble-based electrochemical behaviour. Models for the observed responses are discussed, including simulations, and the frequency of the steps or blips investigated for several systems experimentally.This publication has 16 references indexed in Scilit:
- Observing Iridium Oxide (IrOx) Single Nanoparticle Collisions at UltramicroelectrodesJournal of the American Chemical Society, 2010
- Observation of Discrete Au Nanoparticle Collisions by Electrocatalytic Amplification Using Pt Ultramicroelectrode Surface ModificationThe Journal of Physical Chemistry Letters, 2010
- Efficient Electro-Oxidation of Water near Its Reversible Potential by a Mesoporous IrOx Nanoparticle FilmThe Journal of Physical Chemistry C, 2009
- Preparation and Electrochemical Response of 1−3 nm Pt Disk ElectrodesAnalytical Chemistry, 2009
- Current Transients in Single Nanoparticle Collision EventsJournal of the American Chemical Society, 2008
- Observing Single Nanoparticle Collisions at an Ultramicroelectrode by Electrocatalytic AmplificationJournal of the American Chemical Society, 2007
- Single-Molecule Spectroelectrochemistry (SMS-EC)Journal of the American Chemical Society, 2006
- Self-Assembly of Active IrO2 Colloid Catalyst on an ITO Electrode for Efficient Electrochemical Water OxidationThe Journal of Physical Chemistry B, 2005
- Heritage and early history of the boundary element methodEngineering Analysis with Boundary Elements, 2005
- Theoretische Bemerkungen Über die Brownsche BewegungBerichte der Bunsengesellschaft für physikalische Chemie, 1907