1 research outputs found
MetalāOrganic Frameworks Polyurethane Composite Foams for the Capture of Volatile Organic Compounds
Composites of metalāorganic frameworks (MOFs)
in polyurethane
foams (PUF) are reported to adsorb polar or apolar volatile organic
compounds (VOCs), avoiding the problems usually found when handling
MOFs in the powder form. MOF/PUF composites were prepared using MIL-160(Al)
and UiO-66(Zr)-(CF3)2 via one step process where
the MOFs particles are incorporated during the foam matrix formation.
Under adjusted conditions, the composite materials maintained the
shape and characteristics of the MOF material, good mechanical stability,
and good accessibility to the pores without significantly compromising
the VOCs adsorption capacity for hexane, acetone, methanol, toluene,
and acetic acid. This methodology proved the possibility of incorporating
high amounts of shaped MOF particles, reaching 200% (w/w) of foam,
upon maintaining a considerable open-cell volume percentage (32%).
As an application perspective, we demonstrate that the composites
can overcome the challenge of acetic acid capture in the presence
of ambient moisture with a similar performance to the pure MOF. Thus,
VOCs capture through MOF/polyurethane foam composites is a promising
environmental technology to eliminate air pollutants