ZIF-67/wood derived self-supported carbon composites for electromagnetic interference shielding and sound and heat insulation

Xiaofan Ma; Hongtao Guo; Chunmei Zhang; Donghe Chen; Zhiwei Tian; Yifan Wang; Yiming Chen; Shiwei Wang; Jingquan Han; Zhichao Lou; Changtong Mei; Shaohua Jiang

doi:10.1039/D2QI01943D

ZIF-67/wood derived self-supported carbon composites for electromagnetic interference shielding and sound and heat insulation†

Xiaofan Ma,^a Hongtao Guo,^a Chunmei Zhang,*^b Donghe Chen,^c Zhiwei Tian,

^a Yifan Wang,^a Yiming Chen,

^ad Shiwei Wang,

^c Jingquan Han,

^a Zhichao Lou,*^a Changtong Mei^a and Shaohua Jiang

*^a

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* Corresponding authors

^a Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, China
E-mail: zc-lou2015@njfu.edu.cn, shaohua.jiang@njfu.edu.cn

^b Institute of Materials Science and Devices, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

^c School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China

^d Key Laboratory of Urban Rail Transit Intelligent Operation and Maintenance Technology & Equipment of Zhejiang Province, College of Engineering, Zhejiang Normal University, Jinhua 321004, China

Abstract

Metal–organic frameworks (MOFs), as multifunctional materials, have shown excellent potential. However, the powder form of MOFs has always influenced their practical application. In this study, ZIF-67 was in situ grown on wood to obtain self-supported ZIF-67/wood. It was then carbonized at different temperatures to prepare three-dimensional (3D) porous carbon skeleton/magnetic composites (Co/C@WC). The carbon skeleton of the carbonized wood forms a 3D conductive network structure, while Co/C core–shell type magnetic nanoparticles are firmly and uniformly embedded in the carbon skeleton, enhancing the electrical conductivity and magnetism. After carbonization at 1000 °C, the Co/C@WC composite delivered an excellent conductivity of 3247 S m⁻¹ and an average EMI SE_T of about 43.2 dB at 8.2–12.4 GHz. Co/C@WC composites also exhibited sound insulation, temperature resistance and good mechanical performance, which endow the composites with the potential to be applied as multifunctional shielding materials for use in extreme conditions.

Inorganic Chemistry Frontiers

ZIF-67/wood derived self-supported carbon composites for electromagnetic interference shielding and sound and heat insulation†

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ZIF-67/wood derived self-supported carbon composites for electromagnetic interference shielding and sound and heat insulation

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