Overcoming the Strong Metal-Support Interaction State: CO Oxidation on Tio2(110)-Supported Pt Nanoclusters

被引：106

作者：

Bonanni, Simon ^{[1
]}

Ait-Mansour, Kamel ^{[1
]}

Brune, Harald ^{[1
]}

Harbich, Wolfgang ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland

来源：

ACS CATALYSIS | 2011年 / 1卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

strong metal-support interaction (SMSI); Pt nanoclusters; TiO2; catalysis; CO oxidation; scanning tunneling microscopy (STM); SCANNING-TUNNELING-MICROSCOPY; CATALYTIC-OXIDATION; TIO2(110) SURFACES; THERMAL-STABILITY; MOLECULAR-BEAM; MODEL CATALYST; THIN-FILMS; CLUSTERS; GOLD; PD;

D O I：

10.1021/cs200001y

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 combine low-temperature scanning tunneling microscopy and measurements of the catalytic activity to establish a structure-reactivity correlation for the CO oxidation on Pt nanodusters on rutile TiO2(110)-(1 x 1). Annealing of the clusters to 1100 K leads to their encapsulation by a reduced titania layer. We present a method how this catalytically passive strong metal-support interaction state can be transformed into a very active one. We believe that our method is of general interest well beyond the presented system.

引用

页码：385 / 389

页数：5

共 74 条

[1]

[Anonymous], J CHEM PHYS

[2] CO combustion on supported gold clusters [J].

Arenz, Matthias ;

Landman, Uzi ;

Heiz, Ueli .

CHEMPHYSCHEM, 2006, 7 (09) :1871-1879

[3] EFFECT OF HIGH-TEMPERATURE REDUCTION IN HYDROGEN ON PT DEPOSITED ON THE TIO2 (100) SURFACE - AN ANGLE RESOLVED X-RAY PHOTOEMISSION-STUDY [J].

BARDI, U ;

TAMURA, K ;

NIHEI, Y .

CATALYSIS LETTERS, 1989, 3 (02) :117-128

[4] METAL SUPPORT INTERACTIONS ON RH AND PT/TIO2 MODEL CATALYSTS [J].

BELTON, DN ;

SUN, YM ;

WHITE, JM .

JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (22) :5172-5176

[5] Two (1 x 2) reconstructions of TiO2(110):: Surface rearrangement and reactivity studied using elevated temperature scanning tunneling microscopy [J].

Bennett, RA ;

Stone, P ;

Price, NJ ;

Bowker, M .

PHYSICAL REVIEW LETTERS, 1999, 82 (19) :3831-3834

[6] Surface structures in the SMSI state;: Pd on (1 x 2) reconstructed TiO2(110) [J].

Bennett, RA ;

Pang, CL ;

Perkins, N ;

Smith, RD ;

Morrall, P ;

Kvon, RI ;

Bowker, M .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (18) :4688-4696

[7] 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

[8] Encapsulation of Rh nanoparticles supported on TiO2(110)-(1x1) surface:: XPS and STM studies [J].

Berkó, A ;

Ulrych, I ;

Prince, KC .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (18) :3379-3386

[9] Some contributions of electron microscopy to the characterisation of the strong metal-support interaction effect [J].

Bernal, S ;

Calvino, JJ ;

Cauqui, MA ;

Gatica, JM ;

Cartes, CL ;

Omil, JAP ;

Pintado, JM .

CATALYSIS TODAY, 2003, 77 (04) :385-406

[10]

BONANNI S, EUR PHYS D IN PRESS

← 1 2 3 4 5 6 7 8 →