Dissociative Adsorption of Hydrogen on PdO(101) Studied by HRCLS and DFT
Artikel i vetenskaplig tidskrift, 2013

High-resolution core-level spectroscopy (HRCLS) and density functional theory (DFT) calculations have been used to investigate the adsorption and dissociation of hydrogen on a PdO(101) film grown on Pd(111). Energy-dependent measurements of the O 1s and Pd 3d(5/2) binding energies enable identification of surface components that correspond to undercoordinated Pd and O atoms. HRCLS data obtained at 110 K, after hydrogen exposure at the same temperature, reveal hydrogen adsorption and formation of Pd-H and O-H groups. Adsorption at room temperature results instead in complete reduction of the oxide. The experimental results are supported by the DFT calculations of core-level shifts and barriers for water formation.

Författare

N. M. Martin

Lunds universitet

Maxime van den Bossche

Chalmers, Teknisk fysik, Kemisk fysik

Kompetenscentrum katalys (KCK)

Henrik Grönbeck

Chalmers, Teknisk fysik, Kemisk fysik

Kompetenscentrum katalys (KCK)

C. Hakanoglu

University of Florida

J. Gustafson

Lunds universitet

S. Blomberg

Lunds universitet

M. A. Arman

Lunds universitet

A. Antony

University of Florida

R. Rai

University of Florida

A. Asthagiri

Ohio State University

Jason F. Weaver

University of Florida

E. Lundgren

Lunds universitet

Journal of Physical Chemistry C

1932-7447 (ISSN) 1932-7455 (eISSN)

Vol. 117 26 13510-13519

Ämneskategorier

Fysikalisk kemi

DOI

10.1021/jp4036698

Mer information

Senast uppdaterat

2018-04-09