Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Synthesis of Aluminum Monohydroxide Nanofiber by Electrolysis of Aluminum Plates

  • Woo, S.H. (Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute) ;
  • Lee, M.K. (Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute) ;
  • Rhee, C.K. (Nuclear Nanomaterials Development Lab., Korea Atomic Energy Research Institute)
  • Published : 2006.09.24
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Abstract

Aluminum hydroxides were synthesized by a simple electrolytic reaction of aluminum plates. The aluminum monohydroxide, boehmite(AlO(OH)), was predominantly formed by the application of an electrical potential above 30V, while the mixture of the bayerite$(Al(OH)_3)$ and boehmite(AlO(OH)) phases were formed below 20V. The boehmite has a clear fibrous structure which is controlled on a nanometer scale. On the contrary, the bayerite consists of the typical hourglass or semi-hourglass shaped coarse crystals as a result of an aggregation of the various crystals stacked together. The specific surface area of the boehmite nanofiber was remarkably high, reaching about $300m^2/g$.

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