Chemical synthesis of nanocrystalline ZrO2-SnO2 composite powders

• 作 者: Yang Huaming Zhang Xiangchao YANG Wuguo HUANG Chenghuan Qiu Guanzhou
• 机 构: Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South
• 出 处: 稀有金属(英文版)
• 发表日期: 2004年2期
• 关键词: inorganic materials ZrO2-SnO2 nanocomposites chemical synthesis doping pore stru

ZrO2-SnO2 composite nanoparticles were prepared by heating the hydrate precursors synthesized by the chemical co-precipitation reaction of ZrOCl2 and SnCl4. The precursors were examined by differential thermal analysis (DTA) and thermogravimetric analysis (TGA). The composite powder was characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and desorption isotherm (Barrett-Joyner-Halenda method). The average crystal size of the nanoparticle ranges from 15 to 30 nm for the sample containing 5%-25% ZrO2 (mass fraction). Most of the pores in the ZrO2-SnO2 nanoparticles are about 10-20 nm in diameter. The composite powder is promising for chemical sensors.