Tuning the Metal-Adsorbate Chemical Bond through the Ligand Effect on Platinum Subsurface Alloys

被引：18

作者：

Anniyev, Toyli ^{[1
,2
,3
]}

Kaya, Sarp ^{[1
,4
]}

Rajasekaran, Srivats ^{[1
,2
,5
]}

Ogasawara, Hirohito ^{[1
]}

Nordlund, Dennis ^{[1
]}

Nilsson, Anders ^{[1
,2
,4
]}

机构：

[1] SLAC Natl Accelerator Lab, Stanford Synchrotron Radiat Lightsource, Menlo Pk, CA 94025 USA

[2] SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA

[3] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[4] SLAC Natl Accelerator Lab, SUNCAT Ctr Interface Sci & Catalysis, Menlo Pk, CA 94025 USA

[5] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2012年 / 51卷 / 31期

关键词：

bimetallic surface alloys; core level spectroscopy; d band model; heterogeneous catalysis; platinum; DENSITY-FUNCTIONAL THEORY; ELECTRONIC-STRUCTURE; BIMETALLIC SURFACES; PD ALLOYS; REACTIVITY; ORIGIN; NI; CO; SPECTROSCOPY; ADSORPTION;

D O I：

10.1002/anie.201201068

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Scratching beneath the surface: Pt-M 3d-Pt(111) (M 3d=Co, Ni) bimetallic subsurface alloys have been designed to show the ligand effect tunes reactivity in oxygen and hydrogen adsorption systems. The platinum-oxygen bond order was investigated by oxygen atom projection in the occupied and unoccupied space using X-ray emission spectroscopy (XES) and X-ray absorption spectroscopy (XAS). Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：7724 / 7728

页数：5

共 26 条

[1] Valence-band hybridization and core level shifts in random Ag-Pd alloys [J].

Abrikosov, IA ;

Olovsson, W ;

Johansson, B .

PHYSICAL REVIEW LETTERS, 2001, 87 (17) :176403-176403

[2]

Bligaard T, 2008, CHEMICAL BONDING AT SURFACES AND INTERFACES, P255, DOI 10.1016/B978-044452837-7.50005-8

[3] Growth of ultrathin cobalt oxide films on Pt(111) [J].

De Santis, Maurizio ;

Buchsbaum, Andreas ;

Varga, Peter ;

Schmid, Michael .

PHYSICAL REVIEW B, 2011, 84 (12)

[4] ELECTRONIC-STRUCTURE OF NI AND PD ALLOYS .1. X-RAY PHOTOELECTRON-SPECTROSCOPY OF THE VALENCE BANDS [J].

FUGGLE, JC ;

HILLEBRECHT, FU ;

ZELLER, R ;

ZOLNIEREK, Z ;

BENNETT, PA ;

FREIBURG, C .

PHYSICAL REVIEW B, 1983, 27 (04) :2145-2178

[5] Adsorption sites and ligand effect for CO on an alloy surface: a direct view [J].

Gauthier, Y ;

Schmid, M ;

Padovani, S ;

Lundgren, E ;

Bus, V ;

Kresse, G ;

Redinger, J ;

Varga, P .

PHYSICAL REVIEW LETTERS, 2001, 87 (03) :36103-1

[6] Electronic factors determining the reactivity of metal surfaces [J].

Hammer, B ;

Norskov, JK .

SURFACE SCIENCE, 1995, 343 (03) :211-220

[7]

Hammer B, 2000, ADV CATAL, V45, P71

[8] CO chemisorption at metal surfaces and overlayers [J].

Hammer, B ;

Morikawa, Y ;

Norskov, JK .

PHYSICAL REVIEW LETTERS, 1996, 76 (12) :2141-2144

[9] ELECTRONIC-STRUCTURE OF NI AND PD ALLOYS .2. X-RAY PHOTOELECTRON CORE-LEVEL SPECTRA [J].

HILLEBRECHT, FU ;

FUGGLE, JC ;

BENNETT, PA ;

ZOLNIEREK, Z ;

FREIBURG, C .

PHYSICAL REVIEW B, 1983, 27 (04) :2179-2193

[10] Correlating hydrogenation activity with binding energies of hydrogen and cyclohexene on M/Pt(111) (M = Fe, Co, Ni, Cu) bimetallic surfaces [J].

Humbert, Michael P. ;

Chen, Jingguang G. .

JOURNAL OF CATALYSIS, 2008, 257 (02) :297-306

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