摘要
以沉淀法制备的纳米TiO_2/Cr_2O_3复合粉体为原料,采用氨解法在800℃、氮化8h制备了纳米Ti_(0.8)Cr_(0.2)O_xN_y粉体。对纳米TiO_2/Cr_2O_3复合粉体和合成的氧氮化物粉体用俄歇电子能谱(AES)、氮吸附比表面积(BET)、X射线衍射(XRD)、透射电子显微镜(TEM)、电子探针显微分析(EPMA)等方法进行了表征。结果表明:沉淀法可以制备出组成均匀的纳米TiO_2/Cr_2O_3复合粉体,该复合粉体在800℃氮化8h可得到粒度为20～30nm的纯立方相Ti_(0.8)Cr_(0.2)O_xN_y纳米粉体,其比表面积达4674m^2/g。
Nanocrystalline bimetallic metal oxynitride, Ti0.8Cr0.20OxNy, was synthesized by ammonolysis of the nanosized Cr2O3/TiO2 Composite powder at 800degreesC for 8h. The precursor and the resulting oxynitride were characterized by Auger electron spectroscope (AES), X-ray diffraction analysis (XRD), electron probe microanalysis (EPMA), transmission electron microscopy (TEM), and BET surface area techniques. The results indicate that the as-synthesized oxynitride powder contains only Ti0.8Cr0.2OxNy with cubic structure and its average particle size is 20similar to30nm, its specific surface area reaches 46.74m(2)/g.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第4期777-781,共5页
Journal of Inorganic Materials
基金
国家重点基础研究发展规划项目(G1999064506)
