Related Experiment Video
Updated: Jun 27, 2026
07:02
Studying the Effects of Temperature on the Nucleation and Growth of Nanoparticles by Liquid-Cell Transmission Electron Microscopy
Published on: February 17, 2021
Adsorbate-driven morphological changes of a gold surface at low temperatures
Jan Hrbek1, Friedrich M Hoffmann, Joon B Park
1Chemistry Department 555, Brookhaven National Laboratory, Upton, New York 11973, USA. hrbek@bnl.gov
Journal of the American Chemical Society
|December 4, 2008
Summary
Low temperature carbon monoxide (CO) adsorption on gold surfaces with vacancy islands causes surface restructuring and the creation of gold nanoparticles. This reveals a dynamic surface response impacting reactivity.
Area of Science:
- Surface Science
- Materials Science
- Nanotechnology
Background:
- Gold surfaces are crucial in catalysis and nanotechnology.
- Understanding surface dynamics during adsorption is key to controlling material properties.
Purpose of the Study:
- To investigate the morphological and structural changes on gold surfaces during low-temperature CO adsorption.
- To explore the formation of nanostructured gold particles on modified gold surfaces.
Main Methods:
- Scanning Tunneling Microscopy (STM) for surface imaging.
- Infrared Absorption Reflection Spectroscopy (IARS) for chemical analysis.
- Density Functional Theory (DFT) calculations for theoretical insights.
Main Results:
- Adsorption of CO at low temperatures induced significant morphological changes on gold surfaces.
- Vacancy islands on the gold surface facilitated the formation of nanosized gold particles.
- The dynamic response of the gold surface was observed during the adsorption process.
Conclusions:
- Surface restructuring occurs during CO adsorption on gold, especially on surfaces with vacancy islands.
- The formation of gold nanoparticles is a direct consequence of surface dynamics.
- These findings highlight the impact of adsorption on surface reactivity and material morphology.
