Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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Preparation and Characteristic of Size Controlled Platy Silver by Polyol Process with $PdCl_2$

$PdCl_2$ 첨가 폴리올공정(工程)을 이용(利用)한 판상 은(銀) 분말(粉末) 제조(製造) 및 특성(特性)

  • Shin, Gi-Wung (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Ahn, Jong-Gwan (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Kim, Dong-Jin (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Cho, Sung-Wook (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) ;
  • Ahn, Jea-Woo (Dept. of Advanced Materials Science & Engineering, Daejin University)
  • 신기웅 (한국지질자원연구원 광물자원연구본부) ;
  • 안종관 (한국지질자원연구원 광물자원연구본부) ;
  • 김동진 (한국지질자원연구원 광물자원연구본부) ;
  • 조성욱 (한국지질자원연구원 광물자원연구본부) ;
  • 안재우 (대진대학교 신소재공학과)
  • Received : 2010.08.07
  • Accepted : 2010.10.06
  • Published : 2010.10.30
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Abstract

Platy silver powders with varied size and thickness were prepared by polyol process with $PdCl_2$ in ethylene glycol and characterized its properties and investigated the effects of reaction time, $NH_4OH$, PVP(poly-vinylpyrrolidone) and $PdCl_2$. The characteristics of the products were verified by scanning electron microscopy(SEM), high resolution transmitted electron microscopy(HR-TEM), X-ray diffraction(XRD) and particle size analyzer(PSA) and image analyzer. Platy silver powder was prepared about $5.5\;{\mu}m$ of size and $0.2\;{\mu}m$ at 120minute. It was found that the size of powders increased by the increasing of $NH_4OH$ and $PdCl_2$ concentrations, and the thickness of powders was decreased by increasing of PVP concentration.

[ $PdCl_2$ ] 함유된 폴리올공정을 이용하여 다양한 입도와 두께를 가진 판상 은 분말을 제조하였고 그 특성을 분석하였다. 판상 은 제조시 반응시간, $NH_4OH$, PVP 및 $PdCl_2$의 농도를 변화시킴으로서 각각의 조건 변화에 따른 영향을 조사하였다. 또한 제조된 판상 은 분말의 특성을 SEM, HR-TEM, XRD, PSA 및 Image analyzer를 통하여 분석하였다. 본 연구를 통하여 반응시간 120분의 조건에서 평균 크기 약 $5.5\;{\mu}m$ 및 $0.2\;{\mu}m$ 두께의 판상은 분말을 제조하였다. 반응조건 중$NH_4OH$ 및 $PdCl_2$의 농도가 증가함에 따라 분말의 크기가 증가하였다. 또한 PVP 농도가 증가함에 따라 판상 은 분말의 두께는 감소하였다.

Keywords

References

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