title: Strong Metal-Support Interactions between Gold Nanoparticles and Nonoxides.
abstract: The strong metal-support interaction (SMSI) is of great importance for supported catalysts in heterogeneous catalysis. We report the first example of SMSI between Au nanoparticles (NPs) and hydroxyapatite (HAP), a nonoxide. The reversible encapsulation of Au NPs by HAP support, electron transfer, and changes in CO adsorption are identical to the classic SMSI except that the SMSI of Au/HAP occurred under oxidative condition; the opposite condition for the classical SMSI. The SMSI of Au/HAP not only enhanced the sintering resistance of Au NPs upon calcination but also improved their selectivity and reusability in liquid-phase reaction. It was found that the SMSI between Au and HAP is general and could be extended to other phosphate-supported Au systems such as Au/LaPO4. This new discovery may open a new way to design and develop highly stable supported Au catalysts with controllable activity and selectivity.
authors.affiliation: University of Chinese Academy of Sciences , Beijing 100049, China.
authors.forename: Hailian
authors.initials: H
authors.lastname: Tang
authors.affiliation: Department of Physics, University of Arizona , Tempe, Arizona 85287, United States.
authors.forename: Jiake
authors.initials: J
authors.lastname: Wei
authors.forename: Fei
authors.initials: F
authors.lastname: Liu
authors.forename: Botao
authors.initials: B
authors.lastname: Qiao
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Pan
authors.forename: Lin
authors.initials: L
authors.lastname: Li
authors.affiliation: Department of Physics, University of Arizona , Tempe, Arizona 85287, United States.
authors.forename: Jingyue
authors.initials: J
authors.lastname: Liu
authors.forename: Junhu
authors.initials: J
authors.lastname: Wang
authors.forename: Tao
authors.initials: T
authors.lastname: Zhang