0引言近十年来多元金属多硒化合物的合成是材料科学和固体化学领域中的研究热点[1].其合成方法有高温固相法、熔盐法和溶剂热法.固相合成反应一般是在高温(约800℃以上)的条件下进行的.1987年Ibers[2]等提出了反应性熔盐法(reactive mol...0引言近十年来多元金属多硒化合物的合成是材料科学和固体化学领域中的研究热点[1].其合成方法有高温固相法、熔盐法和溶剂热法.固相合成反应一般是在高温(约800℃以上)的条件下进行的.1987年Ibers[2]等提出了反应性熔盐法(reactive molten salt method),在中温(375℃)条件下成功地合成了多元金属硒(碲)化合物.展开更多
Preparation of In2O3 nano-scale powders by ultrasonic and homogeneous precipitation, using metal In and urea as raw materials, was reported for the first time, while the effects of reaction temperature, the ratio of t...Preparation of In2O3 nano-scale powders by ultrasonic and homogeneous precipitation, using metal In and urea as raw materials, was reported for the first time, while the effects of reaction temperature, the ratio of the materials and the pH etc. on the preparation was dicussed. This method can be operated and industrialized easily with very low cost. The structural properties of precursor and In2O3 were characterized by TG-DTA, XRD, ESCA and TEM. The results show that In2O3 produced are very pure, monophase and spherical nano-scale powders with average size of 25 nm.展开更多
文摘0引言近十年来多元金属多硒化合物的合成是材料科学和固体化学领域中的研究热点[1].其合成方法有高温固相法、熔盐法和溶剂热法.固相合成反应一般是在高温(约800℃以上)的条件下进行的.1987年Ibers[2]等提出了反应性熔盐法(reactive molten salt method),在中温(375℃)条件下成功地合成了多元金属硒(碲)化合物.
文摘Preparation of In2O3 nano-scale powders by ultrasonic and homogeneous precipitation, using metal In and urea as raw materials, was reported for the first time, while the effects of reaction temperature, the ratio of the materials and the pH etc. on the preparation was dicussed. This method can be operated and industrialized easily with very low cost. The structural properties of precursor and In2O3 were characterized by TG-DTA, XRD, ESCA and TEM. The results show that In2O3 produced are very pure, monophase and spherical nano-scale powders with average size of 25 nm.