Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Preparation of Silver Nanoparticles by Chemical Reduction-Protection Method Using 1-Decanoic Acid and Tri-n-octylphosphine, and their Application in Electrically Conductive Silver Nanopaste

1-Decanoic Acid와 Tri-n-octylphosphine을 이용하여 화학적 환원법으로 제조된 은 나노입자의 특성 및 전기적 전도체 적용

  • Sim, Sang-Bo (Department of Ceramic Science and Engineering, Changwon National University) ;
  • Bae, Dong-Sik (Department of Ceramic Science and Engineering, Changwon National University) ;
  • Han, Jong-Dae (Department of Chemical Engineering, Changwon National University)
  • 심상보 (창원대학교 메카트로닉스대학 신소재공학부) ;
  • 배동식 (창원대학교 메카트로닉스대학 신소재공학부) ;
  • 한종대 (창원대학교 공과대학 화공시스템공학과)
  • Received : 2015.12.08
  • Accepted : 2016.01.05
  • Published : 2016.02.10
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Abstract

Silver nanoparticles were prepared by chemical reduction-protection method using 1-decanoic acid and tri-n-octylphosphine as surfactants, and using $NaBH_4$ as a reducing agent. The silver nanoparticles were also studied for their formation, structure, morphology and size using UV-Visible spectroscopy, XRD, TEM and SEM. Further the viscosity of the silver paste and the surface resistance of the silver metal film produced by screen coating onto a PET film were investigated. Well dispersed and quasispherical silver nanoparticles with the size of 10-200 nm were obtained under the optimal molar ratio of $NaBH_4/AgNO_3=1:5$. The surface resistance of silver metal film coated on the PET film made with the silver nanoparticles under the optimal molar ratio showed a minal value of $41{\mu}{\Omega}/cm^2$.

1-decanoic acid와 tri-n-octylphosphine을 분산 안정제로서 사용하고, $NaBH_4$를 환원제로 사용하여 화학적 환원법으로 $AgNO_3$ 수용액으로부터 페이스트용 은 나노입자를 제조하였다. 은 나노입자의 생성, 은 나노입자의 형상 및 크기를 XRD, UV-vis, TEM 및 SEM으로 조사하였다. 합성된 은 나노입자로 페이스트를 제조하여 점도를 측정하였으며, PET 막에 코팅하여 제조된 은 박막의 표면저항을 조사하였다. $NaBH_4/AgNO_3$의 몰비는 1 : 5가 최적으로 나타났고, 최적의 몰비에서 10-200 nm의 잘 분산된 구형에 가까운 은 나노입자를 얻을 수 있었다. 최적의 조건에서 얻은 은 나노입자로 PET 막에 코팅하여 제조한 은 박막의 표면저항은 $41{\mu}{\Omega}/cm^2$의 낮은 값을 나타내었다.

Keywords

References

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