Real time STM observation of Ostwald ripening of Pd nanoparticles on TiO2(110) at elevated temperature

被引：52

作者：

Howard, A ^{[1
]}

Mitchell, CEJ ^{[1
]}

Egdell, RG ^{[1
]}

机构：

[1] Inorgan Chem Lab, Oxford OX1 3QR, England

来源：

SURFACE SCIENCE | 2002年 / 515卷 / 2-3期

关键词：

scanning tunneling microscopy; sintering; palladium; titanium oxide;

D O I：

10.1016/S0039-6028(02)02003-4

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：

We have developed a simple procedure for preparation of Pd nanoclusters on TiO2, (110) with a bimodal distribution of particle sizes. The evolution of the size distribution observed in real time at high temperatures by scanning tunnelling microscopy is consistent with an Ostwald ripening mechanism for cluster growth. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：L504 / L508

页数：5

相关论文

共 17 条

[1] Scanning tunnelling microscopy studies of the reactivity of the TiO2(110) surface:: Re-oxidation and the thermal treatment of metal nanoparticles [J].

Bennett, RA ;

Stone, P ;

Bowker, M .

FARADAY DISCUSSIONS, 1999, 114 :267-277

[2] Pd nanoparticle enhanced re-oxidation of non-stoichiometric TiO2:: STM imaging of spillover and a new form of SMSI [J].

Bennett, RA ;

Stone, P ;

Bowker, M .

CATALYSIS LETTERS, 1999, 59 (2-4) :99-105

[3] Anisotropic spillover from elongated nanoparticles [J].

Bowker, M ;

Smith, RD ;

Bennett, RA .

SURFACE SCIENCE, 2001, 478 (1-2) :L309-L312

[4] Ultrathin metal films and particles on oxide surfaces: Structural, electronic and chemisorptive properties [J].

Campbell, CT .

SURFACE SCIENCE REPORTS, 1997, 27 (1-3) :1-111

[5]

Diebold U., 2001, Chemical Physics of Solid Surfaces, V9, P443

[6] A study of the growth and mobility of Pd nanoclusters on WO3(001) by scanning tunnelling microscopy [J].

Dixon, RA ;

Egdell, RG .

SURFACE SCIENCE, 2000, 452 (1-3) :207-219

[7] Adsorption of gases on complex: Solid surfaces [J].

Freund, HJ .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1997, 36 (05) :452-475

[8] Scanning tunnelling microscopy study of the growth of small palladium particles on TiO2(110) [J].

Jak, MJJ ;

Konstapel, C ;

van Kreuningen, A ;

Verhoeven, J ;

Frenken, JWM .

SURFACE SCIENCE, 2000, 457 (03) :295-310

[9] Automated detection of particles, clusters and islands in scanning probe microscopy images [J].

Jak, MJJ ;

Konstapel, C ;

van Kreuningen, A ;

Verhoeven, J ;

van Gastel, R ;

Frenken, JWM .

SURFACE SCIENCE, 2001, 494 (02) :43-52

[10] Scanning tunneling microscopy studies of metal clusters supported on TiO2 (110):: Morphology and electronic structure [J].

Lai, X ;

St Clair, TP ;

Valden, M ;

Goodman, DW .

PROGRESS IN SURFACE SCIENCE, 1998, 59 (1-4) :25-52