e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
Conference -ISSS-8-
Growth Mode Analysis of Cu Nanoparticles on Rutile TiO2(110)
Toshitaka AokiKei MitsuharaMasaru Takizawa
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2018 Volume 16 Pages 225-228

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Abstract

The growth mode of Cu nanoparticles deposited on the rutile TiO2(110) surfaces have been investigated by high-resolution medium energy ion scattering (MEIS). The observed MEIS spectra are well reproduced assuming the hemispherical and two-dimensional islands. The MEIS results indicated that the two-dimensional islands of Cu nanoparticles grow initially up to Cu coverage of 0.3 ML and then three-dimensional islands growth become dominant. Interestingly, growth mode is the same tendency for both reduced TiO2 (R-TiO2) and oxygen-rich TiO2 (O-TiO2). These results indicate that Cu has grown as a Volmer-Weber growth mode for TiO2 system and that Cu nanoparticles are formed as both 2D- and 3D- islands on R- and O-TiO2. [DOI: 10.1380/ejssnt.2018.225]

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