Imaging cluster surfaces with atomic resolution:: The strong metal-support interaction state of Pt supported on TiO2(110)

被引：329

作者：

Dulub, O ^{[1
]}

Hebenstreit, W ^{[1
]}

Diebold, U ^{[1
]}

机构：

[1] Tulane Univ, Dept Phys, New Orleans, LA 70118 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.84.3646

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nanosized platinum clusters were grown on a TiO2(110) surface and annealed in ultrahigh vacuum at high temperatures. This leads to the so-called strong metal-support interaction (SMSI) state, characterized by a complete encapsulation of the clusters with a reduced titanium oxide layer. We present atomically resolved scanning tunneling microscopy measurements of the cluster surfaces and an atomic model of the SMSI state. The ability to resolve the cluster surface geometry with atomistic detail may help to identify the active sites responsible for the SMSI.

引用

收藏

页码：3646 / 3649

页数：4

相关论文

共 16 条

[1] ELECTRON-MICROSCOPY OF SUPPORTED METAL PARTICLES .1. BEHAVIOR OF PT ON TITANIUM-OXIDE, ALUMINUM-OXIDE, SILICON-OXIDE, AND CARBON [J].

BAKER, RTK ;

PRESTRIDGE, EB ;

GARTEN, RL .

JOURNAL OF CATALYSIS, 1979, 56 (03) :390-406

[2] 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

[3] STM study of rhodium deposition on the TiO2(110)-(1x2) surface [J].

Berko, A ;

Menesi, G ;

Solymosi, F .

SURFACE SCIENCE, 1997, 372 (1-3) :202-210

[4] CO-induced changes of Ir nanoparticles supported on TiO2 (110)-(1x2) surface [J].

Berko, A ;

Solymosi, F .

SURFACE SCIENCE, 1998, 411 (03) :L900-L903

[5] THE GROWTH AND STRUCTURE OF TITANIUM-OXIDE FILMS ON PT(111) INVESTIGATED BY LEED, XPS, ISS, AND STM [J].

BOFFA, AB ;

GALLOWAY, HC ;

JACOBS, PW ;

BENITEZ, JJ ;

BATTEAS, JD ;

SALMERON, M ;

BELL, AT ;

SOMORJAI, GA .

SURFACE SCIENCE, 1995, 326 (1-2) :80-92

[6] COMPARISON OF METAL-SUPPORT INTERACTIONS IN PT/TIO2 AND PT/CEO2 [J].

DATYE, AK ;

KALAKKAD, DS ;

YAO, MH ;

SMITH, DJ .

JOURNAL OF CATALYSIS, 1995, 155 (01) :148-153

[7] Evidence for the tunneling site on transition-metal oxides: TiO2(110) [J].

Diebold, U ;

Anderson, JF ;

Ng, KO ;

Vanderbilt, D .

PHYSICAL REVIEW LETTERS, 1996, 77 (07) :1322-1325

[8] Surface science approach to modeling supported catalysts [J].

Gunter, PLJ ;

Niemantsverdriet, JW ;

Ribeiro, FH ;

Somorjai, GA .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1997, 39 (1-2) :77-168

[9] METAL SUPPORT INTERACTION - GROUP-VIII METALS AND REDUCIBLE OXIDES [J].

HALLER, GL ;

RESASCO, DE .

ADVANCES IN CATALYSIS, 1989, 36 :173-235

[10]

Henry CR, 1998, SURF SCI REP, V31, P235