Initial growth of Au on oxides

被引:24
作者
Guo, QL
Luo, K
Davis, KA
Goodman, DW
机构
[1] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA
[2] CAS, Inst Phys, State Key Lab Surface Phys, Beijing 100080, Peoples R China
[3] Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA
关键词
Au clusters; surface plasmon; Au growth on oxides; Au deposition; ordered film;
D O I
10.1002/sia.1028
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The growth of Au clusters on TiO2(110) - (1 x 1) and -(1 x 2) single-crystal surfaces and on ordered Al2O3 films prepared on Re(0001) has been studied by low-energy electron diffraction (LEED), Auger electron spectroscopy (AES), low-energy ion scattering spectroscopy (LEISS) and high-resolution electron energy-loss spectroscopy (HREELS). The results indicate that Au forms two-dimensional islands on the TiO2(110) surface at initial deposition of Au. On the alumina film, Au initially grows as three-dimensional clusters. The coverage of Au at which Au clusters change from non-metallic to metallic properties is found to be > 0.3 monolayer equivalent (MLE) of Au deposition based on the energy shift of the surface plasmon measurements. Copyright (C) 2001 John Wiley & Sons, Ltd.
引用
收藏
页码:161 / 165
页数:5
相关论文
共 28 条
[1]   A COMPARISON OF THE INITIAL GROWTH OF METAL LAYERS ON MO(110) AND W(110) SURFACES [J].
BAUER, E ;
POPPA, H .
THIN SOLID FILMS, 1984, 121 (02) :159-173
[2]   The size dependence of the electronic structure of Pd clusters supported on Al2O3Re(0001) [J].
Cai, YQ ;
Bradshaw, AM ;
Guo, Q ;
Goodman, DW .
SURFACE SCIENCE, 1998, 399 (2-3) :L357-L363
[3]   The influence of CO on the surface plasmon absorption band of small silver clusters (D<=20 angstrom) [J].
Charle, KP ;
Konig, L ;
Rabin, I ;
Schulze, W .
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1996, 36 (02) :159-162
[4]  
COFFER JL, 1990, J AM CHEM SOC, V112, P3376
[5]   THE HIGH-RESOLUTION ELECTRON-ENERGY-LOSS SPECTRUM OF TIO2(110) [J].
COX, PA ;
EGDELL, RG ;
ERIKSEN, S ;
FLAVELL, WR .
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 1986, 39 (1-4) :117-126
[6]   CO adsorption and oxidation on Au/TiO2 [J].
Dekkers, MAP ;
Lippits, MJ ;
Nieuwenhuys, BE .
CATALYSIS LETTERS, 1998, 56 (04) :195-197
[7]   PLASMON RESONANCE IN SPUTTERED GOLD-FILMS OBSERVED IN SCANNING-TUNNELING-MICROSCOPY [J].
DUFOUR, JP ;
DAVID, T ;
LACROUTE, Y ;
GOUDONNET, JP .
SURFACE SCIENCE, 1994, 310 (1-3) :301-306
[8]   OPTICAL PLASMON LOSSES IN STABILIZED AU-55 CLUSTERS [J].
FAUTH, K ;
KREIBIG, U ;
SCHMID, G .
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1991, 20 (1-4) :297-300
[9]   OPTICAL-PROPERTIES OF SYSTEMS CONTAINING AU-55-CLUSTERS [J].
FAUTH, K ;
KREIBIG, U ;
SCHMID, G .
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS, 1989, 12 (1-4) :515-520
[10]   OBSERVATION OF SINGLE-PARTICLE PLASMONS BY NEAR-FIELD OPTICAL MICROSCOPY [J].
FISCHER, UC ;
POHL, DW .
PHYSICAL REVIEW LETTERS, 1989, 62 (04) :458-461