Fabrication Of Porous Materials/Polymer Composites And Their Applications On Benzene Adsorption

Porous materials exhibit an excellent volatile organic gas(VOCs)adsorption performance because of its unique pore structure and a high specific surface area,which is one of the materials more widely used in the field of environmental pollution treatment and prevention.In this work,based on the new microporous structure NaY zeolite,the hierarchically porous NaY/polyvinylpyrrolidone(NaY/PVP)composites featured with uniform morphology and large specific surface area are fabricated by optimizing the electrospinning technology such as the spinning voltage and spinning flow rates,showing high benzene adsorption of 667 mg/g due to the synergistic effect originated from the porous PVP and microporous NaY zeolite.Further,with the merits of the cost-efficient and simple preparation process of zeolitic imidazolate frameworks-8(ZIF-8),we develop hierarchically porous N-doped carbon fibers derived from the pyrolysis of ZIF-8/polyacrylonitrile(ZIF-8/PAN)composite fibers by employing electrospinning technology and chemical vapor deposition(CVD)technology.The hierarchically porous N-doped carbon fibers exhibit a benzene adsorption capacity of 694 mg/g,which can be attributed to its high adsorption active sites and specific surface area.These results expand the potential applications of zeolite/polymer composites and their derivatives in VOCs adsorption.