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Electron transfer kinetics at single nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
32452 44930 2012 6 PDF Available
Title
Electron transfer kinetics at single nanoparticles
Abstract

SummaryThe understanding and control of charge transfer at the very smallest scale is fundamental to nanoscience for applications such as catalysis and energy storage. However, the quantitative measurement of the kinetics of electron transfer at the nanoscale at individual free nanoparticles has not hitherto been possible. Here we describe experiments to unambiguously determine the electron transfer kinetics for the reduction of protons at single gold and silver nanoparticles of radii 7–15 nm. We show that there is a true “nano effect” (a kinetic acceleration due to the size of the nanoparticle) for this reaction at silver nanoparticles, but not at gold nanoparticles.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (66 K)Download as PowerPoint slideHighlights► First measurement of charge transfer kinetics at single free nanoparticles. ► Experiments presented for reduction of protons at gold and silver nanoparticles. ► Kinetic acceleration (i.e. “nano effect”) demonstrated for silver but not gold. ► Further development of the nanoparticle-electrode collision method. ► Confirmation of mass transport to nanoparticle during impact.

Keywords
Single nanoparticles; Electron transfer kinetics; Proton reduction; Nanoelectrochemistry
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Publisher
Database: Elsevier - ScienceDirect
Journal: - Volume 7, Issue 3, June 2012, Pages 174–179
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us