Articles
  • Formation behavior of indium hydroxide powder synthesized by a precipitation method

  • Hyung-Ryul Parka,*, Won-Jun Leeb, Kwang-Bo Shimc, Hae-Jin Hwangb and Jin-Ho Kima

  • aSchool of New Materials Engineering Kyungpook National University 41566, Korea
    bSchool of Material Science and Engineering, Inha University, Incheon 22212, Korea
    cDepartment of Material Science and Engineering, Hanyang University Seoul 04763, Korea

Abstract

Powders were obtained using an indium chloride solution and were characterized as a function of precipitation pH, aging time, and concentration of the liquid synthetic medium. Indium hydroxide (In(OH)3) and indium oxide hydroxide (InOOH) co-existed in the pH range of 5 to 8, but only indium hydroxide was present at pH 9 and 10. The crystallite size of In(OH)3 had a stronger dependence on pH than on the concentration of the reaction medium compared to InOOH. Hence, the relative crystallite size of In(OH)3 increased significantly with increasing pH compared to that of InOOH, which barely changed with increasing concentration and pH. Although the crystallite size of In(OH)3 increased slightly with increasing precipitate aging time, the specific surface area decreased significantly. These results can help control the synthesis of indium oxide particles used to make indium tin oxide targets.


Keywords: Indium hydroxide, Indium oxide hydroxide, Precipitation method

This Article

  • 2019; 20(4): 327-332

    Published on Aug 31, 2019

  • Received on Jan 11, 2019
  • Revised on Jun 25, 2019
  • Accepted on Jun 25, 2019

Correspondence to

  • Hyung-Ryul Park

  • School of New Materials Engineering Kyungpook National University 41566, Korea
    Tel : +82 054-470-7710
    Fax: +82 054-470-7599

  • E-mail: baramzzoa@naver.com