CuO超细粉体的形貌与红外特性研究

CuO作为一种多功能精细无机材料，在印染、陶瓷、玻璃及医药等领域的应用已有数十年的历史，作为催化剂的主要活性成分，近年来在氧化、加氢、C１化学合成、NOx还原、CO及碳氢化合物燃烧、精细化工等多种催化反应中也得到了广泛的应用。可以推测，当CuO材料的粒度达到纳米级时，将使它的功能更加独特，应用更为广泛。因此CuO纳米材料的制备方法、聚集状态、与其他组分或载体的作用状况及催化活性等成为当前功能材料发展的研究热点之一犤１～８犦。我们在前文中报道了直接热解Cu２（OH）２CO３所得CuO粒径小、分布均匀、比表面积大，…

Study on the Morphology and Infrared Spectrum Behavior of Ultrafine Powder CuO

Ultrafine Powder CuO was prepared by direct-heating Cu₂(OH)₂CO₃ in different calcination temperatures. XRD, FT-IR, SEM and surface area measurement techniques were used to investigate the properties of the CuO powder. The results show that the decomposition temperature has remarkably effect on crystallite size, morphology, surface structure, IR behavior and activity of the powder for H₂O₂ decomposition. The major morphology of the particle is fluffy-sphered in the lower temperature, which is consists of small sheets of crystallite. With the in-creasing of calcination temperature, crystal of CuO grows up, the fluffy-sphered particle reduces and catalytic ac-tivity decreases. FT-IR patterns revealed that the absorption of Cu-O and -OH bond in CuO ultrafine powder were red-shifted.