| TiO2／Fe2O3核-壳粒子的制备及光学性能 | |
| Alternative Title | Synthesis and optic character of TiO2/Fe2O3 core-shell particles |
| 张霞; 赵岩; 张彩碚 | |
| 2005 | |
| Source Publication | 材料研究学报
 |
| ISSN | 1005-3093 |
| Volume | 19.0Issue:004Pages:343-348 |
| Abstract | 钛酸四丁酯（TBOT）水解产生的TiO2沉积在单分散准球形α-Fe2O3颗粒的表面，形成均匀、连续的核-壳结构，TiO2壳层的厚度约为30nm．在500℃热处理后，TiO2壳层从非晶态转变为锐钛矿结构,在光激发下，TiO2／Fe2O3核-壳粒子的电子从TiO2价带跃迁到能量较低的α-Fe2O3导带，在可见光区产生新的强吸收峰．光谱计算结果表明TO2价带与α-Fe2O3导带的能量差为1．6eV． |
| Other Abstract | A continuous uniform layer of amorphous TiO2 obtained by the hydrolysis of TBOT could be deposited on the surface of monodispersed pseudo-spherical α-Fe2O3. The thickness of the TiO2 shell was about 30 nm. After heat treatment at 500℃, the structure of TiO2 shell transformed to the anatase. The UV-Vis spectrum of core-shell particles showed that the electron, induced by UV-Vi sray, transferred from the valence band of TiO2 to the conduction band of α-Fe2O3. As a result, the absorb peak of core-shell particles shifted toward long wave, and the maximum absorbance appeared in the range of visible ray area. |
| Keyword | 复合材料 单分散 准球形α-Fe2O3 锐钛矿TiO2 核-壳粒子 |
| Indexed By | CSCD |
| Language | 中文 |
| CSCD ID | CSCD:2027141 |
| Citation statistics |
Cited Times:5[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/143936 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 中国科学院金属研究所 |
| Recommended Citation GB/T 7714 | 张霞,赵岩,张彩碚. TiO2／Fe2O3核-壳粒子的制备及光学性能[J]. 材料研究学报,2005,19.0(004):343-348. |
| APA | 张霞,赵岩,&张彩碚.(2005).TiO2／Fe2O3核-壳粒子的制备及光学性能.材料研究学报,19.0(004),343-348. |
| MLA | 张霞,et al."TiO2／Fe2O3核-壳粒子的制备及光学性能".材料研究学报 19.0.004(2005):343-348. |
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