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Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (14): 1667-1672. Previous Articles     Next Articles

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六方纳米氧化铟的制备及其气敏性质和表面酸碱性质研究

范迎菊，李加智，孙中溪*   

  1. (济南大学化学化工学院 山东省氟化学化工材料重点实验室 济南 250022)
  • 投稿日期:2010-11-19 修回日期:2011-03-01 发布日期:2011-03-28
  • 通讯作者: 孙中溪 E-mail:sunzx@ujn.edu.cn
  • 基金资助:

    超细粒铜、铅、锌金属氧化矿物表面硫化络合研究;氧化硅、氧化铝、氧化铁纳米微界面复合体系的表面络合化学研究

Preparation, Gas-Sensing and Acid-Base Properties of Hexagonal In2O3 Nano-Particles

FAN Ying-Ju, LI Jia-Zhi, SUN Zhong-Xi   

  1. (Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022)
  • Received:2010-11-19 Revised:2011-03-01 Published:2011-03-28
  • Contact: Zhong-Xi SUN E-mail:sunzx@ujn.edu.cn

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Hexagonal In2O3 nanostructures with star-like morphology were synthesized using dodetyl amine (DDA) and oleic acid as template through a surfactant-assisted solvothermal process, characterized by TEM, SEM, XRD, IR, and TG/DTA. Testing results indicate that In2O3 shows an excellent response and selectivity to ethanol vapor at 300 ℃. The acid-base properties of In2O3 were studied by potentiometric titration technique. The concentration of surface hydroxyl was calculated. Within the range of pH＝5～7.3, the preponderant surface component of In2O3 was ≡InOH.

Key words: semiconductor material, indium oxide, gas sensors, surface hydroxyl site, acid-base properties