| 水热辅助溶胶-凝胶法制备纳米晶γ-Al2O3及表征 |
| Preparation and Characterization of γ-Al2O3 Nanocrystals by Hydrothermal Assisted Sol-gel Method |
|
| 摘要: |
| 关键词: γ-Al2O3 纳米晶 溶胶-凝胶法 水热 发光 |
| 基金项目: |
| Abstract: γ-Al2O3 nanocrystals were prepared by hydrothermal assisted sol-gel method using aluminum isopropoxide (Al(OC3H7-i)3) as raw materials. The structure, morphology, size and luminescence property of these nanocrystals were investigated by powder X-ray diffraction (XRD), transmission electron microscope (TEM) and photoluminescence spectra (PL). The results showed that the prepared γ-Al2O3 nanocrystals were well dispersed and highly crystallized, the prepared nanocrystals exhibited a strong and wide photoluminescence band in the wavelength range of 300~600 nm, and the main emission is at 397 nm, and the PL band of γ-Al2O3 nanocrystals may be attributed to the oxygen vacancies defect levels (F+ centers). The γ-Al2O3 nanocrystals might open up promising applications in many fields due to their unique properties and potentials quite different from those of the bulk counterparts. |
| Keywords: γ-Al2O3 nanocrystal sol-gel hydrothermal photoluminescence |
| |
| 摘要点击次数: 1388 |
| 全文下载次数: 2178 |
| 石 涛,周 箭,申乾宏,杨 辉.水热辅助溶胶-凝胶法制备纳米晶γ-Al2O3及表征[J].无机化学学报,2009,25(5):915-919. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
