화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.44, No.6, 753-762, November, 2020
DOI10.7317/pk.2020.44.6.753  Export Citation
폴리도파민/환원 산화그래핀/게르마늄 복합체의 One-pot 합성 및 나노복합재료의 전기적 물성 향상
One-pot Synthesis of Polydopamine/Reduced Graphene Oxide/Germanium Complex and Improvement in Electrical Properties of Nanocomposite
김효철, 김형일†
  • 충남대학교 응용화학공학과
Hyochul Kim, and Hyung-Il Kim†
  • Department of Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, 99, Daehak-ro, Yuseong-gu, Daejeon 34134, Korea
E-mail:
초록
자연 모사 접착 및 코팅 특성을 발현시킬 수 있도록 폴리도파민을 이용하여 높은 전기전도성과 표면적을 갖는 환원된 그래핀 산화물 표면에 게르마늄 결정을 균일하게 형성시켜 폴리도파민/환원 산화그래핀/게르마늄 전도성 복합체를 합성하였다. 기존에 이러한 전도성 복합체를 합성하는데 필요한 고온, 고압, 소결 등 고비용의 가혹한 조건 대신 상온 및 상압의 온화한 조건에서 one-pot 공정으로 전도성 복합체를 합성하였다. 전도성 복합체는 폴리도파민이 코팅된 환원 산화그래핀 표면에 게르마늄 결정이 균일하게 고정되어 있는 형태학적 특성을 나타내었다. 폴리비닐알코올과 폴리도파민/환원 산화그래핀/게르마늄 복합체를 사용하여 제조된 나노복합재료는 전도성 복합체의 전기적 및 형태학적 특성에 기인하여 우수한 전기적 특성을 나타내었다.
Polydopamine/reduced graphene oxide/germanium conductive complex was synthesized by forming germanium crystals uniformly on the surface of the reduced graphene oxide having high electric conductivity and surface area using polydopamine of nature-inspired adhesion and coating characteristics. The conductive complex was synthesized by a novel one-pot process in the mild condition of room temperature and normal pressure instead of using pre-established high cost and harsh conditions of high temperature, high pressure, and sintering. The conductive complex showed the morphological characteristics of anchoring of uniformly dispersed germanium crystals on the surface of reduced graphene oxide coated with polydopamine. The nanocomposite of poly(vinyl alcohol) and polydopamine/graphene oxide/germanium complex showed much improved electrical properties owing to the electrical and morphological features of the conductive complex.
Keywords:polydopamine;graphene;germanium;nanocomposite;electrical conductivity
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