Highly Porous Fibrous Network Materials for Gas Filtration

Novel gas filtration membrane with high flux, high separation performance, and adjustable porosity

Filtration is used to separate one substance from another by entrapment within or on a filter medium. Air filtration can be important in both industrial and personal applications, especially as pollution in certain areas becomes worse. A variety of pulmonary diseases, induced by serious air pollution, can cause numerous health problems, including death, in numerous people, especially the elderly and children. Therefore, in recent years an increasing number of people have begun to wear face masks due to air pollution or dust storms. Due to the cost and potentially extreme physical and chemical environments that some filters endure, improvements in the durability, filtration efficiency, chemical resistance, and weight can prove to be useful.

Dr. Benjamin Chu, Distinguished Professor at Stony Brook University invented a novel nano-fibrous gas filtration membrane, by using a highly porous cellulose nano fibrous barrier layer with highly porous (surface charged) substrate, can exhibit high flux, high retention, and low pressure drop in the filtration of toxic aromatic gasses, fumes, bacteria, viruses, dusts, and particulate matters, in the air. PCT filed

High flux and high separation performance The porosity of the 3D barrier layer can be as high as 99% The surface of the gas filtration membrane can be easily functionalized The pore size of the porous paper substrate can be tuned

Gas/air filtration

We seek to develop and commercialize, by an exclusive or non-exclusive license agreement and/or sponsored research, with a company active in the area.

Available for License


Cellulose nanofibers, Polysaccharide nano-fibers, Chemical cross-linking, 3-Dimensional network structure, Membrane, Air filtration, Gas filtration

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