Rapid growth of nanotubes and nanorods of würtzite ZnO through microwave-irradiation of a metalorganic complex of zinc and a surfactant in solution

Bulletin of materials science

Kalya Jagannatha Rao²  Sanjaya Brahma¹  Srinivasarao Shivashankar³ 

[1] Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$Materials Research Centre, Indian Institute of Science, Bangalore 560 012, IndiaMaterials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$;Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, IndiaSolid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$;Materials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$Centre for Excellence in Nanoelectronics, Indian Institute of Science, Bangalore 560 012, India$$Materials Research Centre, Indian Institute of Science, Bangalore 560 012, IndiaMaterials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$Centre for Excellence in Nanoelectronics, Indian Institute of Science, Bangalore 560 012, India$$Centre for Excellence in Nanoelectronics, Indian Institute of Science, Bangalore 560 012, IndiaMaterials Research Centre, Indian Institute of Science, Bangalore 560 012, India$$Centre for Excellence in Nanoelectronics, Indian Institute of Science, Bangalore 560 012, India$$

关键词: Nanostructures;    crystal growth;    electron microscopy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Large quantities of single-crystalline ZnO nanorods and nanotubes have been prepared by the microwave irradiation of a metalorganic complex of zinc, in the presence of a surfactant. The method is simple, fast, and inexpensive (as it uses a domestic microwave oven), and yields pure nanostructures of the hexagonal würtzite phase of ZnO in min, and requires no conventional templating. The ZnO nanotubes formed have a hollow core with inner diameter varying from 140�??160 nm and a wall of thickness, 40�??50 nm. The length of nanorods and nanotubes varies in the narrow range of 500�??600 nm. These nanostructures have been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and selected area electron diffraction (SAED). The ZnO nanorods and nanotubes are found by SAED to be single-crystalline. The growth process of ZnO nanorods and nanotubes has been investigated by varying the surfactant concentration and microwave irradiation time. Based on the various results obtained, a tentative and plausible mechanism for the formation of ZnO nanostructures is proposed.

【 授权许可】

Unknown