Nano Archive

Single-molecule kinetics of nanoparticle catalysis

Xu, Weilin and Shen, Hao and Liu, Guokun and Chen, Peng (2009) Single-molecule kinetics of nanoparticle catalysis. Nano Research, 2 (12). pp. 911-922.



Owing to their structural dispersion, the catalytic properties of nanoparticles are challenging to characterize in ensemble-averaged measurements. The single-molecule approach enables studying the catalysis of nanoparticles at the single-particle level with real-time single-turnover resolution. This article reviews our single-molecule fl uorescence studies of single Au-nanoparticle catalysis, focusing on the theoretical formulations for extracting quantitative reaction kinetics from the single-turnover resolution catalysis trajectories. We discuss the single-molecule kinetic formulism of the Langmuir-Hinshelwood mechanism for heterogeneous catalysis, as well as of the two-pathway model for product dissociation reactions. This formulism enables the quantitative evaluation of the heterogeneous reactivity and the differential selectivity of individual nanoparticles that are usually hidden in ensemble measurements. Extension of this formulism to single-molecule catalytic kinetics of oligomeric enzymes is also discussed.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:8076
Deposited By:JNCASR
Deposited On:11 Feb 2010 08:04
Last Modified:18 Feb 2010 16:56

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