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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 21, 2003
Accepted January 3, 2004

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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화학환원법을 이용한 Ag 나노분말의 합성

Synthesis of Silver Nanoparticles by Chemical Reduction Method

서원식 김태환¹ 성재석¹ 송기창^†

Won-Sik Seo Tae-Hwan Kim¹ Jae-Suk Sung¹ Ki-Chang Song^†

건양대학교 화학공학부, 320-711 충남 논산시 내동 26 ¹한국에너지기술연구원 에너지시스템연구부, 305-701 대전시 유성구 장동 71-2

Department of Chemical Engineering, Konyang University, 26, Nae-dong, Nonsan, Chungnam 320-711, Korea ¹Energy System Division, Korea Institute of Energy Research, 71-2, Jang-dong, Yuseong-gu, Deajeon 305-343, Korea

Korean Chemical Engineering Research, February 2004, 42(1), 78-83(6), NONE Epub 21 April 2004

Abstract

화학환원법을 이용하여 AgNO₃ 수용액에 환원제를 첨가시키는 방법으로 Ag분말을 제조하였으며, 이 과정 중 환원제의 종류 변화(N₂H₄, NaBH₄)가 얻어진 분말의 특성 변화에 미치는 영향을 살펴보았다. 또한 분말합성 과정 중 계면활성제(Tween20)를 수용액에 첨가하여 계면활성제가 분말의 특성에 미치는 영향도 살펴보았다. 제조된 분말의 SEM 측정결과 환원제로 sodium borohydride(NaBH₄)를 사용하여 제조된 Ag 분말의 크기는 약 0.3 μm인 반면 hydrazine(N₂H₄)을 사용하여 제조된 분말의 크기는 약 1 μm로 sodium borohydride를 사용해 제조한 분말의 크기가 더 작고 고른 크기 분포를 보였다. 또한 환원제로써 hydrazine을 사용시 계면활성제를 첨가하여 제조된 Ag 나노분말의 크기는 50 nm정도로 계면활성제를 첨가하지 않고 제조된 분말보다(1 μm)입자의 크기가 더 작고 균일한 입도 분포를 나타내었다.

Silver powders were prepared by chemical reduction method using reductants in AgNO₃ aqueous solutions. The effect of the type of reductants (N₂H₄, NaBH₄) was investigated on the properties of the obtained powders. In addition, the effect of the addition of a surfactant (Tween20) during particle synthesis was studied. The Ag powders prepared using the sodium borohydride as a reductant were found to be 0.3 μm in particle diameter, while those using the hydrazine showed 1 μm in particle diameter. The mean particle size of Ag nanopowders, prepared by the addition of Tween20 as a surfactant, was 50 nm, which is smaller than 1 μm powders formed without the surfactant.

Keywords

Silver Hydrazine Sodium Borohydride Chemical Reduction Surfactant Tween20 Nanoparticle

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