Size and support effects in the photoelectron spectra of small TiO2 particles
- 1 June 1992
- journal article
- research article
- Published by Wiley in Surface and Interface Analysis
- Vol. 18 (6) , 392-396
- https://doi.org/10.1002/sia.740180604
Abstract
Three different TiO2 samples in the form of bulk material, colloidal particles and small clusters supported on SiO2 have been studied by extended x‐ray adsorption fine structure (EXAFS), UV‐visible, transmission electron microscopy (TEM) and XPS. The different values of the Ti 2p binding energies and the Auger parameter of Ti found for each sample show that the photoemission processes in these oxide materials are influenced by size and support effects. A difference in the relaxation energy of −1.1 eV is found for the TiO2/SiO2 sample with respect to TiO2, which is attributed to an effect of the silica support.Keywords
This publication has 16 references indexed in Scilit:
- Auger parameter shifts in the case of the non‐local screening mechanism: Applications of the electrostatic model to molecules, solids and adsorbed speciesSurface and Interface Analysis, 1991
- The Auger parameter and the polarization energy: A simple electrostatic modelSurface and Interface Analysis, 1990
- Preparation and characterization of quantum-size titanium dioxideThe Journal of Physical Chemistry, 1988
- Bonding-state characterization of constituent elements in phyllosilicate minerals by XPS and NMRThe Journal of Physical Chemistry, 1988
- Interaction of nickel with silicon oxide or silica formed on silicon(111) and carbon monoxide adsorption inhibition in nickel/silicon oxide/n-silicon(111) studied by XPS and AESLangmuir, 1988
- Photochemistry and radiation chemistry of colloidal semiconductors. 23. Electron storage on zinc oxide particles and size quantizationThe Journal of Physical Chemistry, 1988
- Raman study of the preparation of silica-supported titania from titanium tetrachloride and hydrogen chlorideLangmuir, 1987
- Ionicity of metallic oxide surfaces on metals as observed by Auger (XPS) spectroscopySurface and Interface Analysis, 1985
- Electronic structure of supported small metal clustersPhysical Review B, 1983
- The crystal structure of melliteActa Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 1973