Publications

One-Step Synthesis of Core-Shell-Structured Mixed-Metal CPO-27(Cu,Co) and Investigations on Its Controlled Thermal Transformation

Bitzer, J. and Göbel, C. and Muhamad Ismail, A. and Fu, Q. and Muhler, M. and Kleist, W.

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume: 2021 Pages: 2257-2261
DOI: 10.1002/ejic.202100227
Published: 2021

Abstract
Using the mixed-metal approach, a direct synthesis route at ambient pressure was developed for a new type of bimetallic metal-organic framework based on the CPO-27 structure. The structural characterization of CPO-27(Cu0.6−CS−Co0.4) using X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray mapping and X-ray absorption spectroscopy revealed that the Cu2+ and Co2+ ions were exclusively incorporated at the metal positions of the CPO-27 lattice, but with a core-shell distribution within the crystallites. The parent framework material was then utilized as a precursor for the generation of novel bimetallic carbon-supported materials using the controlled thermal decomposition in a reducing atmosphere. During this decomposition process, the distribution of the two metals remained the same, which resulted in unique needle-shaped particles with a high dispersion of cobalt at the periphery of the amorphous carbon and agglomerated copper particles in the inside. © 2021 The Authors. European Journal of Inorganic Chemistry published by Wiley-VCH GmbH

« back