Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Synthesis of the orange color pigment in the system of TiO2-SnO-ZnO by solid state reaction

고상반응법에 의한 TiO2-SnO-ZnO의 주황 안료 합성에 관한 연구

  • Kim, Soomin (Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Ungsoo (Korea Institute of Ceramic Engineering and Technology) ;
  • Cho, Woo Seok (Korea Institute of Ceramic Engineering and Technology)
  • 김수민 (한국세라믹기술원 이천분원 도자세라믹센터) ;
  • 김응수 (한국세라믹기술원 이천분원 도자세라믹센터) ;
  • 조우석 (한국세라믹기술원 이천분원 도자세라믹센터)
  • Received : 2016.09.27
  • Accepted : 2016.10.07
  • Published : 2016.10.31
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Abstract

In this study, new composition of orange color pigment was developed by replacing formerly used lead and chromium with environment-friendly elements. $TiO_2-SnO-ZnO$ composite was synthesized using the solid state reaction under the reducing atmosphere with the LPG and air mixture gas. The synthesized pigments were characterized by spectrophotometer, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and X-ray Photoelectron Spectroscopy (XPS). The colorimetric analysis of pigments exhibited color values ranging from yellow to orange-red. Five different crystalline phases were formed after the heat treatment for 4 and 6 hours. The color of pigments was strongly influenced by the crystalline structure of $SnO_2$, having either cubic or tetragonal structure. The oxidation state study of elements revealed that the color of pigment is getting close to rYR with the increase of $Sn^{4+}$ ratio.

본 연구에서는 납이나 크롬이 함유되지 않은 친환경적인 물질의 새로운 주황 무기 안료를 개발하고자 하였다. 고상반응법을 이용하여 LPG와 Air를 이용한 환원분위기에서 $TiO_2-SnO-ZnO$계 주황색 무기 안료를 합성하였다. 합성 된 안료들의 특성을 분석하기 위하여 표색계 값인 $L^*a^*b^*$ 값을 측정 후, XRD를 이용하여 결정 상을 분석하였고, SEM을 이용하여 미세구조 관찰하였으며, XPS를 이용하여 원소들의 산화가 상태를 분석하였다. 고상 반응법으로 합성 후 열처리한 $TiO_2-SnO-ZnO$ 안료는 yellow에서 orange-red 사이의 색을 가진다. $TiO_2-SnO-ZnO$ 안료의 결정상 분석 결과, 5가지의 결정상이 혼재하는 것을 볼 수 있는데, $SnO_2$가 cubic과 tetragonal 구조 중 어떤 결정 구조를 가지는지가 발색의 가장 중요한 요인으로 작용하는 것을 확인하였다. XPS를 이용하여 원소들의 산화가 상태를 분석한 결과, $Sn^{4+}$의 비율이 높을수록 안료가 rYR에 가까운 색을 가지는 것을 확인할 수 있다.

Keywords

References

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