Normal
temperature catalytic ozonation (NTCO) is a promising yet
challenging method for the removal of volatile organic compounds (VOCs)
because of limited activity of the catalysts at ambient temperature.
Here, we report a series of Pt/FeO
x
catalysts
prepared by the co-precipitation method for NTCO of gaseous methanol.
All samples were found to be active and among them, the Pt/FeO
x
-400 (calcined at 400 °C) catalyst with
a Pt cluster loading of 0.2% exhibited the highest activity, able
to completely convert methanol into CO2 and H2O at 30 °C. Extensive experimental research suggested that the
superior catalytic activity could be attributed to the highly dispersed
Pt clusters and an appropriate molar ratio of Pt0/Pt2+. Furthermore, electron paramagnetic resonance and density
functional theory computational studies revealed the mechanism that
the Pt/FeO
x
-400 catalyst could activate
O3 and water effectively to produce hydroxyl radicals responsible
for the catalytic oxidation of methanol. The findings of this work
may foster the development of technologies for normal temperature
abatement of VOCs with low energy consumption.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.