Journal of Adhesion and Interface (접착 및 계면)

The Society of Adhesion and Interface, Korea (한국접착및계면학회)
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Preparation and Characterization of Graphene/Zn-Al Layered Double Hydroxide Composites

그래핀과 Zn-Al 이중층상 수산화물 복합체의 제조 및 특성분석

  • Lee, Jong-Hee (Department of Polymer Science and Engineering, Chungju National University) ;
  • Ko, Yl-Woong (Department of Polymer Science and Engineering, Chungju National University) ;
  • Kim, Ki-Young (Department of Textile Convergence of Biotechnology & Nanotechnology, Korea Institute of Industrial Technology) ;
  • Lim, Jung-Hyurk (Department of Polymer Science and Engineering, Chungju National University) ;
  • Kim, Kyung-Min (Department of Polymer Science and Engineering, Chungju National University)
  • 이종희 (충주대학교 공과대학 나노고분자공학과) ;
  • 고일웅 (충주대학교 공과대학 나노고분자공학과) ;
  • 김기영 (한국생산기술연구원 바이오나노섬유 융합연구그룹) ;
  • 임정혁 (충주대학교 공과대학 나노고분자공학과) ;
  • 김경민 (충주대학교 공과대학 나노고분자공학과)
  • Received : 2011.11.23
  • Accepted : 2011.12.14
  • Published : 2011.12.30
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Abstract

Exfoliated graphite oxide (EGO) was prepared by graphite oxide in an aqueous solution of TMAOH. The hybrid graphene/Zn-Al LDH material was fabricated by the hydrothermal reduction of the solution of EGO, $Zn(NO_3)_2{\cdot}6H_2O$, $Al(NO_3)_3{\cdot}9H_2O$, urea, and trisodium citrate. That is, metal ions were absorbed on the surface of EGO, and Zn-Al LDH material was randomly dispersed on the surface of graphene along with a reduction process of EGO to graphene by hydrothermal treatment. The composition, morphology, and thermal property of the obtained graphene-based hybrid material were studied by FE-SEM, EDX, TEM, FT-IR, XRD, TGA, and DSC.

그래파이트 옥사이드(GO)를 tetramethylammonium hydroxide (TMAOH)수용액을 이용하여 나노 크기로 분산되어 박리된 그래파이트 옥사이드(Exfoliated Graphite Oxide: EGO)를 제조하였다. 얻어진 EGO를 $Zn(NO_3)_2{\cdot}6H_2O$, $Al(NO_3)_3{\cdot}9H_2O$, urea, trisodium citrate의 혼합용액에 넣어 격렬히 교반 후 고압멸균기에서 열수 처리하여 동시에 환원된 그래핀(RGO)과 Zn-Al 이중층상 수산화물(LDH)의 나노 복합재료를 제조하였다. 즉, EGO의 표면에 두 개의 금속이온이 흡착된 후 열수처리 환원을 통하여 Zn-Al 이중층상 수산화물이 RGO의 표면에 자유롭게 성장하여 복합화 되었다. 얻어진 그래핀/Zn-Al LDH의 구조 및 형태와 열적 특성은 FE-SEM, EDX, TEM, FT-IR, XRD, TGA와 DSC를 통하여 분석하였다.

Keywords

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