Publication Date
3-4-2021
Department
Ames Laboratory; Chemistry; Office of Biotechnology
Campus Units
Chemistry, Ames Laboratory, Office of Biotechnology
OSTI ID+
1770120
Report Number
IS-J 10435
DOI
10.1063/5.0041904
Journal Title
The Journal of Chemical Physics
Volume Number
154
Issue Number
9
First Page
094710
Abstract
Heterogeneous single-metal-site catalyst or single-atom catalyst research has grown rapidly due to the accessibility of modern characterization techniques that can provide invaluable information at the atomic-scale. Herein, we study the structural evolution of isolated single Pt sites incorporated in a metal–organic framework containing bipyridine functional groups using in situ diffuse reflectance infrared Fourier transform spectroscopy with CO as the probe molecule. The structure and electronic properties of the isolated Pt sites are further corroborated by x-ray photoelectron spectroscopy and aberration-corrected scanning transmission electron microscopy. We find the prerequisite of high temperature He treatment for Pt activation and CO insertion and inquire into the structural transformation of Pt site process by dynamic nuclear polarization-enhanced solid-state nuclear magnetic resonance spectroscopy.
DOE Contract Number(s)
AC02-07CH11358
Language
en
Publisher
Iowa State University Digital Repository, Ames IA (United States)
