Interfacial Growth of Metal Organic Framework/Graphite
Oxide Composites through Pickering Emulsion and Their CO<sub>2</sub> Capture Performance in the Presence of Humidity
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Abstract
We proposed an in situ interfacial
growth method induced by the Pickering emulsion strategy to produce
metal organic framework (MOF)/graphite oxide (GO) composites of Cu<sub>3</sub>(BTC)<sub>2</sub>/GO, in which GO was demonstrated to be a
promising stabilizer for producing the Pickering emulsion and provided
a large interfacial area for the in situ growth of Cu<sub>3</sub>(BTC)<sub>2</sub> nanoparticles. When Cu<sub>3</sub>(BTC)<sub>2</sub>/GO composites
were used as adsorbents for CO<sub>2</sub> capture from the simulated
humid flue gas, they showed both significantly improved thermodynamic
and dynamic properties. Because most of the H<sub>2</sub>O molecules
were adsorbed on the highly exfoliated GO sheets in Cu<sub>3</sub>(BTC)<sub>2</sub>/GO-m, CO<sub>2</sub> uptake reached 3.30 mmol/g
after exposure to the simulated flue gas for 60 min and remained unchanged
for up to 120 min. This highlighted its potential application for
real CO<sub>2</sub> capture. More importantly, the in situ interfacial
growth of nanoparticles induced by Pickering emulsions would be a
promising strategy for designing and fabricating nanocomposites
