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J. Korean Ceram. Soc. > Volume 42(11); 2005 > Article
Journal of the Korean Ceramic Society 2005;42(11): 722.
doi: https://doi.org/10.4191/kcers.2005.42.11.722
황산 제1철을 이용한 방추형 괴타이트 나노 입자의 합성
한양수, 유희준1, 문지웅1, 오유근1
(주)나노스페이스
1요업(세라믹)기술원
Synthesis of Spindle Shape α-FeOOH Nanoparticle from Ferrous(II) Sulfate Salt
Yang-Su Han, Hee-Joun You1, Ji-Woong Moon1, You-Keun Oh1
Nanospace Co. Ltd. Korea Institute of Ceramic Engineering, Business Incubator
1Korea Institute of Ceramic Engineering and Technology (KICET)
ABSTRACT
A wet-chemical route was utilized to obtain nanosized crystalline goethite ($alpha$-FeOOH) particle, which was known as an oxidation catalyst in reducing carbon monoxide (CO) and dioxine during incineration. A cost-effective $FeSO_4{cdot}7H_2O$ was used as starting raw material and a successive process of hydrolysis-oxidation was utilized as synthetic method. The effects of the initial $Fe^{2+}$ concentration, hydrolysis time and oxidation period on the crystalline phase and particle characteristics were systematically investigated by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and BET analyses. It was found that the spindle-shaped crystalline $alpha$-FeOOH particle with the width of 70 nm and the length of 200 nm could be obtained successfully when the initial concentration of 1.5 M, hydrolysis time of 4h, and oxidation period of 10 h, respectively. In addition, it was observed that the spindle-shaped $alpha$-FeOOH particle consisted of nano-sized primary crystallites of $30~50;nm$, which were de-agglomerated into individual particle and successively re
Key words: Nanoparticles, Goethite, Spindle-shape, Catalyst, Dioxine
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