Self-assembly of ZnO nanoparticles and preparation of bulk ZnO porous nanosolids  

作　　者：LIUXiulin XUHongyan YULili LIMei WANGChengjian CUIDeliang JIANGMinhua 

机构地区：[1]StateKeyLaboratoryofCrystalMaterials,ShandongUniversity,Jinan250100,China [2]SchoolofPhysicsandMicroelectronics,ShandongUniversity,Jinan250100,China

出　　处：《Chinese Science Bulletin》2005年第7期612-617,共6页

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.50272036,90101016,20473048,and 90206042);the Key Project of Science and Technology Research Program of Ministry of Education(KPSTRP);the Specialized Research Fund for the Doctoral Program of Higher Education(SRFDP).

摘　　要：Novel bulk ZnO porous nanosolids were pre- pared by a unique solvothermal hot-press method, using ZnO nanoparticles and several kinds of solvents as the start- ing materials. It was found from the experiments that ZnO nanoparticles underwent a “self-assembly process” under some specific hydrothermal hot-press conditions. As a result, some “nanoflowers” formed. The results showed that porous nanosolids with uniform pore diameters could be obtained when water distributed uniformly among the ZnO nanopar- ticles. On the contrary, if the uniformity of the distribution of water was poor, “nanoflowers” would appear in the wa- ter-rich region. It was also found that the photoluminescence of ZnO porous nanosolids was affected by the self-assembly phenomenon. In addition, the results also showed that, both the volume and diameters of the pores could be adjusted by changing either the hot-press temperature, pressure or the kinds of solvents.Novel bulk ZnO porous nanosolids were prepared by a unique solvothermal hot-press method, using ZnO nanoparticles and several kinds of solvents as the starting materials. It was found from the experiments that ZnO nanoparticles underwent a 'self-assembly process' under some specific hydrothermal hot-press conditions. As a result, some 'nanoflowers' formed. The results showed that porous nanosolids with uniform pore diameters could be obtained when water distributed uniformly among the ZnO nanoparticles. On the contrary, if the uniformity of the distribution of water was poor, 'nanoflowers' would appear in the water-rich region. It was also found that the photoluminescence of ZnO porous nanosolids was affected by the self-assembly phenomenon. In addition, the results also showed that, both the volume and diameters of the pores could be adjusted by changing either the hot-press temperature, pressure or the kinds of solvents.

关 键 词：自集合结构 氧化锌 微粒 化学结构 半导体 光发射二极管 

分 类 号：O614.241[理学—无机化学] O649[理学—化学]