Materials Reports 2020, Vol. 34 Issue (Z2): 104-111 |
INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Review on Graphene Composites in Air Purification |
HOU Ruomeng1,2, JIA Ying1, HUANG Yuanzheng1, SHEN Keke1
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1 School of Missile Engineering,Rocket Force University of Engineering,Xi'an 710025, China 2 The PLA Unit 96037, Baoji 721006, China |
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Abstract Graphene is a new material, which features large specific surface area, excellent photoelectric performance and good stability. The common functional materials, such as inorganic semiconductor, metal organic framework material, nanofiber, graphite phase carbon nitride can combine with graphene to purify the air through adsorption, catalysis or filtration. The characteristics and merits of the formed graphene-based composites were analyzed and the preparation methods were summarized. And the focus is placed on the research progress of their applications in air purification. The mechanisms of purification were thoroughly analyzed from the perspective of thermodynamics, such as band gap width and electron structure. What's more, the dynamical mechanisms to enhance the air purification were discussed, such as increasing active sites, establishing heterojunction, strengthening gas mass transfer and improving surface charge transfer. Then the future prospects for developing practical, low-cost and high-adsorption capacity graphene-based composites were presented. By comparing these graphene-based composites, we find that single component and binary component graphene composites are increasingly unable to meet the high efficiency and complex purification requirements. And most powdered graphene compositeshave the disadvantages of aggregation and bleeding in application. The multi-component graphene composites can develop the advantages of various materials and graphene aerogel composites have the blocky three-dimensional structure, which meet the various need and have obvious advantages in air purification application.
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Published: 08 January 2021
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Fund:This work was supported by the National Natural Science Foundation of China (21875281). |
About author:: Ruomeng Hou is now a doctoral candidate in the Rocket Force University of Engineering. The main research area is the treatment of liquid propellant waste water and waste gas.Ying Jia, female, professor of Rocket Force Engineering University, mainly engaged in research on pollution control of special energy sources. |
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