A continuous
aerosol route is demonstrated for the gas-phase synthesis
of the copper-based metal–organic framework (Cu-MOF) supported
on CeO2 nanoparticle clusters, which can be used to fabricate
MOF-derived Cu@CeO2 hybrid nanomaterials for the catalysis
of reversed water–gas shift reaction (RWGS). The results show
that both metal surface area and metal dispersion were enhanced by
decreasing the Cu/Ce atomic ratio of the hybrid material. Incorporation
of the CeO2 nanoparticle cluster enhanced both activity
and stability of the MOF-derived nanostructured catalysts. In addition
to high selectivity and sufficient operation stability toward RWGS,
a superior high catalytic activity under a relatively low-temperature
operation was achievable (i.e., TOFCO2
= 0.1635
s–1 at 400 °C) in comparison to the reported
values in the literature. The present development for MOF-derived
nanostructured materials produced by using an aerosol-based evaporation-induced
self-assembly method opens up opportunities for the design of nanostructured
catalysts useful for a variety of applications in CO2 capture
and utilization.
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