title: XPS revelation of tungsten edges as a potential donor-type catalyst.
abstract: We report an efficient yet simple technology of photoelectron spectroscopic purification for identifying the capability of, and direction of charge flow in, a catalyst in a reaction, which has enabled the finding, for the first time, of the similarity of the valence band of tungsten edges to that of Rh adatoms and Ag/Pd alloy and hence suggested that W undercoordinated atoms could be a suitable candidate for replacing the costly Rh adatoms and Ag/Pd alloy as a cheaper, richer, and efficient donor-type catalyst for CO and NO oxidation applications. The new technology and new findings will be stimulating to the community for new catalyst design and identification and provide a better understanding of the electronic process of a catalytic reaction associated with undercoordinated atoms.
authors.affiliation: School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
authors.forename: Yanguang
authors.initials: Y
authors.lastname: Nie
authors.forename: Xi
authors.initials: X
authors.lastname: Zhang
authors.forename: Shouzhi
authors.initials: S
authors.lastname: Ma
authors.forename: Yan
authors.initials: Y
authors.lastname: Wang
authors.forename: Jisheng
authors.initials: J
authors.lastname: Pan
authors.forename: Chang Q
authors.initials: CQ
authors.lastname: Sun