| Cr_2O_3在一维TiO_2中的掺杂行为 |
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| 引用本文： | 李华,张志焜.Cr_2O_3在一维TiO_2中的掺杂行为[J].青岛科技大学学报,2006,27(6):480-482. |
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| 作者姓名： | 李华 张志焜 |
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| 作者单位： | 青岛科技大学材料科学与工程学院,山东青岛266042 |
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| 摘 要： | 以硝酸铬和四氯化钛为前驱体,采用化学共沉淀法制得TiO2和Cr2O3的复合粉体。将复合粉体进行水热处理,用透射电子显微镜、场发射扫描电子显微镜、电子衍射、X射线衍射以及紫外-可见光谱吸收仪等测试手段对样品的形貌和成份以及光吸收性进行了分析。结果表明,水热处理后得到一维管状结构,其管长500~600 nm,直径10~20nm,壁厚4~6 nm。研究还发现,与纯的TiO2相比,Cr2O3/TiO2复合粉体的紫外-可见光吸收光谱显著红移。
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| 关 键 词： | 二氧化钛 三氧化二铬 化学共沉淀法 纳米管 水热法 |
| 文章编号： | 1672-6987(2006)06-0480-03 |
| 修稿时间： | 2006年4月4日 |
Behaviors of Cr2O3 Doped in One Dimentional TiO2 |
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| LI Hua,ZHANG Zhi-kun.Behaviors of Cr2O3 Doped in One Dimentional TiO2[J].Journal of Qingdao University of Science and Technology:Natutral Science Edition,2006,27(6):480-482. |
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| Authors: | LI Hua ZHANG Zhi-kun |
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| Abstract: | Cr_(2)O_(3)/TiO_(2) compound powder was prepared by co-precipitation methods from TiCl_(4) and Cr(NO_(3))_(3)·9H_(2)O.The samples were treated by hydrothermal process and characterized by TEM,SEM,ED,XRD and UV-VIS analysis.The results showed that the nanotubes of Cr_(2)O_(3)/TiO_(2) have been successfully prepared by hydrothermal process,with 500～600 nm in lengths,10～20 nm in diameters,and 4~6 nm in thickness.Compared with pure titanium dioxide,the UV-VIS spectra of Cr_(2)O_(3)/TiO_(2) show significantly increased absorbance in visible light region. |
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| Keywords: | titanium dioxide chromium hemitrioxide co-precipitation nanotubes hydrothermal treatment |
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