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Reduced graphene oxide aerogel decorated with Mo_(2)C nanoparticles toward multifunctional properties of hydrophobicity,thermal insulation and microwave absorption

查看全文 作　　者：Yahui [1,2,3,4]Wang;Minghui [2]Zhang;Xuesong [1,3,4]Deng;Zhigang [1,3,4]Li;Zongsheng [1,3,4]Chen;Jiaming [1,3,4]Shi;Xijiang [2]Han;Yunchen [2]Du 高影响力作者 机构地区：[1]Key Laboratory of Infrared and Low Temperature Plasma of Anhui Province,National University of Defense Technology,Hefei 230037,China;[2]MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,China;[3]State Key Laboratory of Pulsed Power Laser Technology,National University of Defense Technology,Hefei 230037,China;[4]Anhui Provincial Laboratory of Advanced Laser Technology,National University of Defense Technology,Hefei 230037,China高影响力机构 出　　处：《International Journal of Minerals,Metallurgy and Materials》索引2023年第30卷第3期,共12页高影响力期刊 基　　金：supported by the China Postdoctoral Science Foundation(No.2021MD703944);the Fund of Science and Technology on Near-Surface Detection Laboratory(No.6142414211808);the Director Fund of State Key Laboratory of Pulsed Power Laser Technology(No.SKL2021ZR06);the National Natural Science Foundation of China(No.21776053)。 摘　　要：Reduced graphene oxide(rGO)aerogels are emerging as very attractive scaffolds for high-performance electromagnetic wave absorption materials(EWAMs)due to their intrinsic conductive networks and intricate interior microstructure,as well as good compatibility with other electromagnetic(EM)components.Herein,we realized the decoration of rGO aerogel with Mo_(2)C nanoparticles by sequential hydrothermal assembly,freeze-drying,and high-temperature pyrolysis.Results show that Mo_(2)C nanoparticle loading can be easily controlled by the ammonium molybdate to glucose molar ratio.The hydrophobicity and thermal insulation of the rGO aerogel are effectively improved upon the introduction of Mo_(2)C nanoparticles,and more importantly,these nanoparticles regulate the EM properties of the rGO aerogel to a large extent.Although more Mo_(2)C nanoparticles may decrease the overall attenuation ability of the rGO aerogel,they bring much better impedance matching.At a molar ratio of 1:1,a desirable balance between attenuation ability and impedance matching is observed.In this context,the Mo_(2)C/r GO aerogel displays strong reflection loss and broad response bandwidth,even with a small applied thickness(1.7 mm)and low filler loading(9.0wt%).The positive effects of Mo_(2)C nanoparticles on multifunctional properties may render Mo_(2)C/r GO aerogels promising candidates for high-performance EWAMs under harsh conditions. 关 键 词：Mo_(2)C/reduced graphene oxide aerogel microwave absorption dielectric loss HYDROPHOBICITY thermal insulation
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