微波加热在高岭石表面制备ZnO纳米微晶及其机理分析  

Preparation of Nanocrystalline ZnO on the Surface of Kaolinite by Microwave Heating and Mechanism Analyses for Its Formation

作　　者：张先如[1] 顾晓文[1] 孙嘉[1] 徐政[1] 

机构地区：[1]同济大学材料科学与工程学院微电子材料研究所,上海200092

出　　处：《高等学校化学学报》2006年第8期1555-1557,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:50372045)资助

摘　　要：ZnO nano-powders was prepared on the surface of exfoliated kaolinite（with the precursor solution of（ZnAc2·2H2O） and ammonia） via microwave heating hydrolysis method,the nanocrystalline ZnO was（characterized） by using XRD,FTIR,TEM and their formation mechanism was proposed.The results indicate that the products are composed of hexagonal-phased ZnO.The morphology of ZnO is rod-like without exfoliated kaolinite（length is 100-200 nm,diameter is 50-80 nm） as well as is cluster whisker-like in the presence of exfoliated kaolinite（length is 200-350 nm,diameter is 40-60 nm）.The infrared absorption of the latter was enhanced apparently.The formation mechanism of the nanocrystalline ZnO synthesized by this method was also suggested.ZnO nano-powders was prepared on the surface of exfoliated kaolinite （with the precursor solution of ZnAc2· 2H20 and ammonia） via microwave heating hydrolysis method, the nanocrystalline ZnO was characterized by using XRD, FTIR, TEM and their formation mechanism was proposed. The results indicate that the products are composed of hexagonal-phased ZnO. The morphology of ZnO is rod-like without exfoliated kaolinite （length is 100--200 nm, diameter is 50-80 nm） as well as is cluster whisker-like in the presence of exfoliated kaolinite（length is 200-350 nm, diameter is 40--60 nm）. The infrared absorption of the latter was enhanced apparently. The formation mechanism of the nanocrystalline ZnO synthesized by this method was also suggested.

关 键 词：微波 高岭石 ZNO 簇状晶须 

分 类 号：O643[理学—物理化学] TB383[理学—化学]