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 were well reproduced assuming the hemispherical and two-dimensional islands. The MEIS results indicate that the two-dimensional islands of Cu nanoparticles grow initially up to Cu coverage of 0.5 ML and then three -dimensional islands growth become dominant. Interestingly, the growth mode is almost the same for both reduced TiO2 and oxygenrich TiO2. These results indicate that Cu nanoparticles are formed as both two- and three-dimensional islands on reduced and oxygen-rich TiO2.
