沉淀法制备纳米CuO及微结构控制

以Cu(NO3)2为铜源,分别用水,乙醇作为分散剂,NaOH,NaOH-Na2CO3作沉淀剂,采用液相沉淀法制备了CuO纳米晶粒,并用XRD,TEM等测试手段对产物的结构,晶粒大小和形貌等进行了表征,结果表明,产物的微结构与焙烧温度,分散剂和沉淀剂的种类有关。以水为分散剂,产物的形态是分散性良好的纺锤型,而以乙醇为分散剂,产物的形态是分散性较好的球型,同NaOH作沉淀上比,共沉淀法制备了产物粒径较小,但团聚较严重,此外,初步研究了不同微结构纳米CuO对氯酸铵（AP）的催化活性。

Synthesis and Microstructural Control of Nanocrystalline CuO via Precipitation

The nanocrystalline CuO powders with different microstructure were prepared by precipitation method using Cu(NO 3) 2 as copper raw material, water or ethanol as dispersants, and NaOH or NaOH Na 2CO 3 as precipitates. The structure, particle size and morphology of resulting CuO powders were characterized by XRD and TEM. Results indicated that the microstructure of resulting CuO powders depends on calcining temperature, dispersants and precipitates. TEM photographs reveal that the CuO particles produced using water as dispersant are ellipsoids with good dispersity, while the CuO particles produced using ethanol as dispersant are spherical shape with better dispersity. Compared with NaOH as precipitate, the CuO particles produced using NaOH Na 2CO 3 as precipitate are smaller, but more heavily agglomerated. In addition, the catalysis of the nanocrystalline CuO powders on NH 4ClO 4 is investigated.