Nanocrater catalyst in metal nanoparticles and method for preparing the same
AssigneeKorea Advanced Institute of Science and Technology
InventorsJeung-Ku Kang, Augustine Saji, Jung-Woo Lee, Weon-Ho Shin, Kyu-Sung Han, Jung-Hoon Choi
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Abstract
Disclosed are a nanocrater catalyst in metal nanoparticles with a nanocrater form of hole structure in center of the catalyst which is useful for manufacturing nano-sized materials and/or articles with desired structure and characteristics, a preparation method thereof including a plasma etching and chemical etching process (“PTCE process”), and nano-sized materials and/or articles manufactured by using the nanocrater catalyst in metal nanoparticles.
Claims9
A method of preparing a nanocrater catalyst in metal nanoparticles, comprising:
- (a) vapor-depositing metal nanoparticles on a substrate to form a metal nanoparticle film;
- (b) pre-treating the vapor-deposited metal nanoparticle film with plasma, to form metal nanoparticles with a plurality of vacancies and dislocations;
- and
- (c) chemically etching the metal nanoparticles, after the plasma pre-treatment, to form a hole at the center of each of the metal nanoparticles.
Dependencies are inferred from the claim text.