Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Sn02 Two-dimensional Nanostructures Prepared by Solution Reduction Method and Their Gas Sensing Characteristics

용액환원법에 의한 Sn02 2차원 나노구조의 합성과 가스 감응 특성

  • Park, Hong-Chul (Department of Materials Science & Engineering, Korea University) ;
  • Kim, Hae-Ryong (Department of Materials Science & Engineering, Korea University) ;
  • Lee, Jong-Heun (Department of Materials Science & Engineering, Korea University)
  • Published : 2008.08.31
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Abstract

SnO nanosheets were prepared at room temperature through a reaction between an aqueous solution of $SnCl_2$, $N_2F_4$, and NaOH and were converted into $SnO_2$ nanosheets without a morphological change. The SnO nanosheets were formed through a dissolution-recrystallization mechanism. Uniform and well-dispersed SnO nanosheets with the round-shape morphology were attained when the solution was treated by ultrasonic sound immediately after the addition of NaOH. The $SnO_2$ nanosheets prepared by means of solution reduction under the ultrasonic treatment, and subsequent oxidation at $600^{\circ}C$ showed a high level of gas sensitivity to $C_2H_5OH$ and $CH_3COCH_3$.

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