24小时热门版块排行榜

返回列表

guxue

专家顾问 (知名作家)

学习使人进步

专家经验: +1783
IN-EPI: 14
应助: 2373 (讲师)
贵宾: 1.086
金币: 41268.4
散金: 102
红花: 158
帖子: 6491
在线: 614.2小时
虫号: 538944
注册: 2008-04-03
专业: 无机非金属类光电信息与功
管辖: 无机非金属

[交流] SYNTHESIS AND CHARACTERIZATION OF ZINC OXIDE NANOPARTICLES BY SOL-GEL PROCESS

In the present work zinc oxide nanoparticles (ZnO) were successfully synthesized by a sol-gel method and zinc acetate dehydrate and triethnolamine (TEA) were used as the precursor materials. Ethanol and ammonium hydroxide takes care for the homogeneity and PH value of the solution and helps to make a stoichiometric solution to get Zinc oxide nanoparticles. The ZnO powder obtained from this method is calcined at 700oC and 900oC temperatures. The samples were characterized by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Transmission electron microscopy (TEM), UV- visible spectroscopy and DSC-TG. Results shows that the calcinations temperature significantly affected the crystalline nature, particle size, and optical properties of the processed ZnO nanoparticles. The XRD spectra indicate that the ZnO crystal has a hexagonal wurtzite structure. TEM images agreement with the XRD data shown that the average size of the nanoparticles. The optical properties of the samples are investigated by measuring the UV-VIS absorption at room temperature. With increasing calcinations temperature the band gap of the samples remains almost same, and the size of the particles increase。

回复此楼

» 本帖附件资源列表

欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com
附件 1 : SYNTHESISANDCHARACTERIZATIONOFZINCOXIDENANOPARTICLESBYSOL-GELPROCESS.pdf

2012-05-24 14:50:55, 1.47 M