期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 116, 期 25, 页码 13693-13698出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp303633w
关键词
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资金
- ETH Zurich
- Swiss National Science Foundation [406440-131268, 206021-133768]
- Swiss National Science Foundation (SNF) [406440_131268, 206021_133768] Funding Source: Swiss National Science Foundation (SNF)
A simple structuring method for graphitic structures based on the catalytic properties of cerium oxide nanoparticles under oxidizing conditions is presented. Highly oriented pyrolytic graphite chips were impregnated with well-dispersed ceria nanoparticles and then treated at elevated temperatures for several hours. Oxidation activities on the particle surface appeared as crystallographically independent traces that were formed on the graphite and provide a simple method to manufacture nanogrooves at large scale. By altering treatment durations and temperatures, the optimal conditions and activity parameters of the particles were determined. A systematic AFM evaluation allowed formulating of a mechanism of the etching process. The findings provide a simple procedure for the patterning of graphitic structures, formation of nanogrooves and thereby a basic tool for material science with respect to the manufacturing of atmospheric nanofilters and ion-selective membranes.
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