Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Hydrothermal Synthesis and Exfoliation of Mg/Al Layered Double Hydroxide with Tailored Aspect Ratio

수열 합성 및 박리에 의한 Mg/Al 층상 이중 수산화물의 종횡비 제어

  • Hwang, Sung-Hwan (Nano Convergence Materials Center, Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Donghyun (Nano Convergence Materials Center, Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Yewon (Nano Convergence Materials Center, Korea Institute of Ceramic Engineering & Technology) ;
  • Jung, Hyunsung (Nano Convergence Materials Center, Korea Institute of Ceramic Engineering & Technology)
  • 황성환 (한국세라믹기술원 나노융합소재센터) ;
  • 김동현 (한국세라믹기술원 나노융합소재센터) ;
  • 김예원 (한국세라믹기술원 나노융합소재센터) ;
  • 정현성 (한국세라믹기술원 나노융합소재센터)
  • Received : 2017.10.13
  • Accepted : 2017.11.09
  • Published : 2017.12.01
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Abstract

Mg/Al layered double hydroxide with two-dimensional (2D) nanostructures was synthesized by a hydrothermal technique. The morphology and aspect ratio of $Mg_4Al_2(OH)_{14}3H_2O$ were controlled by the concentration and kinds of the hydrolysis agent, and temperature. The aspect ratio of $Mg_4Al_2(OH)_{14}3H_2O$ layered double hydroxides with the 2D hexagonal crystal structure was tailored from about 12.6 to about 45.7. The intercalated $CO{_3}^{2-}$ anions of the synthesized 2D $Mg_4Al_2(OH)_{14}3H_2O$ layered double hydroxides were exchanged to $NO_3{^-}$ anions. The bulk 2D $Mg_4Al_2(OH)_{14}3H_2O$ layered double hydroxides with the increased space between two layers due to the anion exchange were exfoliated in a formamide solution. The aspect ratio of the exfoliated 2D $Mg_4Al_2(OH)_{14}3H_2O$ layered double hydroxides increased to 570.3.

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References

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