123rd General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Exhibition Hall 2
Time 4월 19일 (금요일) 11:00~12:30
Code MAT.P-446
Subject Solvent-free synthesis of metal nanoparticles and reduced graphene oxide composite for EMI shielding
Authors Kyu Hyung Lee, Nam hwi Hur *
Department of Chemistry, Sogang University, Korea
Abstract We report a novel method to synthesize composites of metal nanoparticles (NPs) and reduced graphene oxide (RGO) sheets, which were prepared by solvent-free reaction among corresponding metal precursor, graphene oxide (GO), and solid hydrazine (H3N+NHCO2-). The synthesized composites were fully characterized by X-ray diffraction, transmission and scanning electron microscopy, IR spectroscopy, Raman spectroscopy, thermogravimetric analysis, electrical conductivity, and electromagnetic interference (EMI) shielding analysis. All the synthesized metal NPs/RGO composites were mixed with acryl resin to their EMI properties. The EMI shielding test was measured with a coaxial holder and network analyzer in the frequency range 1-6 GHz at 25 oC. An excellent EMI shielding efficiency was obtained at 5.2 GHz. Details on the fabrication of the composites and their properties will be presented.
E-mail khaha@sogang.ac.kr