Bioaerosols, malodors and VOCs are important pollutants found indoor. They are known to cause discomfort and irritations, and are related to many diseases, both chronic and acute. Current air purification technologies based on air filtration and adsorption are far from satisfactory due to poor system integration, high energy consumption and secondary pollution. This work attempts a new approach in the design of air purification system by direct integration of the particulate filtration, bioaerosol disinfection, malodor adsorption and catalytic conversion at the material level. Graphene-mixed metal oxide aerogels were prepared by crosslinking graphene and metal oxides to create a new composite porous network of enormous surface area for efficient particulate and gaseous pollutant captures. The monolithic aerogels are formable and possess good mechanical strength. Active selective oxidation catalysts for the treatment of VOCs and malodors can be dispersed within the new aerogel materials. The graphene-mixed metal oxide aerogels are intrinsic bactericides and capable for reducing viability of airborne bacteria.

Monolithic aerogels of graphene-mixed metal oxides for air purification and disinfection

253rd National Meeting (2017)

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