A solvent-free process enabling ZnO/porous carbon with enhanced microwave absorption

作     者：Qi Chen Xing Liu Tingting Wang Xiaogang Su Meng Liu Somboon Chaemchuen Francis Verpoort Qi Chen;Xing Liu;Tingting Wang;Xiaogang Su;Meng Liu;Somboon Chaemchuena;Francis Verpoort

作者机构：State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070China School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China School of Mathematical&Physical SciencesWuhan Textile UniversityWuhan 430200China National Research Tomsk Polytechnic UniversityLenin Avenue 30634050 TomskRussian Federation School of Materials Science and EngineeringNorth University of ChinaTaiyuan 030051China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2023年第149卷第18期

页      面：255-264页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the State Key Lab of Advanced Technology for Materials Synthesis and Processing(Wuhan Univer-sity of Technology)for financial support 

主　　题：Solvent-free method Porous carbon Dielectric materials Interfacial polarization Microwave broadband absorption 

摘      要：Exploring a simple,rapid,solvent-free synthetic method for mass production of cheap,broadband mi-crowave absorbers remains the main ***,a mild solvent-free procedure is reported to syn-thesize zinc oxide nanoparticles(ZnO NPs)embedded in porous carbon derived from mixing sucrose and zinc nitrate *** characteristic morphology and the ZnO NPs distribution in these compos-ites were tuned using the different raw materials *** mesoporous structure of porous car-bon benefits the compositional advantages between carbon foam and ZnO *** optimal synthesized ZnO/C-2 carbon material demonstrates the strongest absorption of-41.7 dB with a frequency of 14.5 GHz at a thin thickness of 2 mm,and its widest effective absorption is close to 6 GHz(12.2-17.8 GHz).This work produces a feasible route for the sensible design of other effective microwave absorbers for large-scale production.