A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Abstract Studies on metal nanoparticles have been intensively carried out from a wide variety of scientific and practical interests [1–8]. These nanoparticles consist of several tens or hundreds of metal atoms in each one. Thanks to this limitation of particle size and number of metal atoms, nanoparticles show their own properties, which can be classified by the terms “quantum size effect”, “nanoscopic effect” or “nanosize effect”. This size limitation introduces the quite high population atoms located on the surface area. For example, 1.5-nm sized noble metal nanoparticles have 55 metal atoms in each particle (Fig. 4.1). In this case, 42 atoms (76.4% of the total atoms) are located on the surface area but only 13 atoms (23.6%) are located in the inner core. Atoms located on the surface area are chemically unsaturated and they are dominant in nanoparticle systems (Fig. 4.2). This phenomenon introduces special properties of nanoparticles different from the properties of the bulk, which are dominated by the chemically saturated atoms of the inner area.
Abstract Studies on metal nanoparticles have been intensively carried out from a wide variety of scientific and practical interests [1–8]. These nanoparticles consist of several tens or hundreds of metal atoms in each one. Thanks to this limitation of particle size and number of metal atoms, nanoparticles show their own properties, which can be classified by the terms “quantum size effect”, “nanoscopic effect” or “nanosize effect”. This size limitation introduces the quite high population atoms located on the surface area. For example, 1.5-nm sized noble metal nanoparticles have 55 metal atoms in each particle (Fig. 4.1). In this case, 42 atoms (76.4% of the total atoms) are located on the surface area but only 13 atoms (23.6%) are located in the inner core. Atoms located on the surface area are chemically unsaturated and they are dominant in nanoparticle systems (Fig. 4.2). This phenomenon introduces special properties of nanoparticles different from the properties of the bulk, which are dominated by the chemically saturated atoms of the inner area.
Well-Dispersed Bimetallic Nanoparticles
Yonezawa, T. (author)
2004-01-01
28 pages
Article/Chapter (Book)
Electronic Resource
English
Metal Nanoparticles , Physical Mixture , Simultaneous Reduction , Bimetallic Nanoparticles , Noble Metal Nanoparticles Engineering , Mechanical Engineering , Theoretical and Applied Mechanics , Surface and Interface Science, Thin Films , Characterization and Evaluation of Materials , Condensed Matter Physics , Nanotechnology
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