Photoelectron emission microscopy (PEEM) study of Cu nanoparticles on TiO2(110)
EMSL Project ID
14399
Abstract
The growth of metals on oxide surface is interested in a number of technological applications, including heterogeneous catalysis, electronic devices and gas sensing. Specifically, metal islands deposited on an oxide surface can be used as simple model system for understanding the growth and reactivity of metal particles on complex commercial catalysts. For example, the Au on titania shows different chemical activities with the changing of particles size [1]. Recently it was found that single crystal surfaces of Cu act as highly effective epoxidation catalysts [2-3], which motivates our investigations of Cu nanoparticles on titanium oxide surface. We will focus on the formation of the nanostructure of Cu nanoparticles on TiO2(110) surface and its changing with increasing temperature or after chemical reaction.The principle measurement tool will be photoelectron emission microscopy (PEEM). We also will use scanning electron microscopy (SEM), transmission electron microscopy (TEM) and atomic-force microscopy (AFM) techniques, complemented as needed with more conventional tools of ultra-high vacuum (UHV) surface chemistry.
1. M. Valden, X. Lai, D. W. Goodman, Science, 1647, 281, 1998
2. J. J. Cowell, A. K. Santra, R. Lindsay, R. M. Lambert, A. Baraldi, A. Goldoni, Surf. Sci., 437, 1-8, 1999.
3. A. K. Santra, J. J. Cowell, R. M. Lambert, Cata. Lett., 67, 87-91, 2000.
Project Details
Project type
Exploratory Research
Start Date
2005-05-01
End Date
2007-03-19
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members