Generation and oxidation of aerosol deposited PdAg nanoparticles

被引：8

作者：

Blomberg, S. ^{[1
]}

Gustafson, J. ^{[1
]}

Martin, N. M. ^{[1
]}

Messing, M. E. ^{[1
]}

Deppert, K. ^{[2
]}

Liu, Z. ^{[3
]}

Chang, R. ^{[3
]}

Fernandes, V. R. ^{[4
]}

Borg, A. ^{[4
]}

Gronbeck, H. ^{[5
]}

Lundgren, E. ^{[1
]}

机构：

[1] Lund Univ, Div Synchrotron Radiat Res, SE-22100 Lund, Sweden

[2] Lund Univ, Div Solid State Phys, SE-22100 Lund, Sweden

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, ALS, Berkeley, CA 94720 USA

[4] Norwegian Univ Sci & Technol, Dept Phys, NO-7491 Trondheim, Norway

[5] Chalmers Univ Technol, Competence Ctr Catalysis, S-41296 Gothenburg, Sweden

来源：

SURFACE SCIENCE | 2013年 / 616卷

基金：

瑞典研究理事会;

关键词：

PdAg; Alloy; Nanoparticles; HPXPS; ROOT-5)R27-DEGREES-O SURFACE OXIDE; CO OXIDATION; CATALYTIC REACTIVITY; MODEL CATALYST; ATOMIC-SCALE; ENERGY; SEGREGATION; PALLADIUM; PHASE; STM;

D O I：

10.1016/j.susc.2013.06.005

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：

PdAg nanoparticles with a diameter of 10 nm have been generated by an aerosol particle method, and supported on a silica substrate. By using a combination of X-ray Energy Dispersive Spectroscopy and X-ray Photoelectron Spectroscopy it is shown that the size distribution of the particles is narrow and that the two metals form an alloy with a mixture of 75% Pd and 25% Ag. Under oxidizing conditions, Pd is found to segregate to the surface and a thin PdO like oxide is formed similar to the surface oxide previously reported on extended PdAg and pure Pd surfaces. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：186 / 191

页数：6

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