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

作     者：Yahui Wang Minghui Zhang Xuesong Deng Zhigang Li Zongsheng Chen Jiaming Shi Xijiang Han Yunchen Du Wang Yahui;Zhang Minghui;Deng Xuesong;Li Zhigang;Chen Zongsheng;Shi Jiaming;Han Xijiang;Du Yunchen

作者机构：Key Laboratory of Infrared and Low Temperature Plasma of Anhui ProvinceNational University of Defense TechnologyHefei 230037China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and StorageSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China State Key Laboratory of Pulsed Power Laser TechnologyNational University of Defense TechnologyHefei 230037China Anhui Provincial Laboratory of Advanced Laser TechnologyNational University of Defense TechnologyHefei 230037China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2023年第30卷第3期

页      面：536-547页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 

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)。 

主　　题：Mo_(2)C/reduced graphene oxide aerogel microwave absorption dielectric loss hydrophobicity thermal insulation 

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.