| 热处理天然金红石的微结构研究 |
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| 引用本文： | 庄 伟,罗泽敏,刘迎新,吴 婧,秦 善,鲁安怀.热处理天然金红石的微结构研究[J].岩石矿物学杂志,2009,28(6):629-636. |
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| 作者姓名： | 庄 伟 罗泽敏 刘迎新 吴 婧 秦 善 鲁安怀 |
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| 作者单位： | 造山带与地壳演化教育部重点实验室,北京大学,地质系,北京,100871 |
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| 基金项目： | 国家重点基础研究发展计划"973"资助项目 |
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| 摘 要： | 利用粉晶X射线衍射(XRD)、透射电镜(TEM)等分析手段对在氩气气氛中加热、退火的天然金红石样品的微结构进行了研究.研究表明样品在热处理后,晶格发生膨胀,并且在900 ℃和1000 ℃的样品中出现了钛铁矿物相.钛铁矿也是一种天然半导体矿物,沿与金红石(010)面网成大约31°夹角的方向生长,与金红石形成了二元复合半导体.紫外漫反射实验结果表明热处理后,金红石中出现的钛铁矿相有效地促进了光催化效果.
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| 关 键 词： | 天然金红石 钛铁矿 微结构 热处理 二元复合半导体 光催化活性 |
The micro-structure study of natural rutile modified by heat treatment |
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| ZHUANG Wei,LUO Ze_min,LIU Ying_xin,WU Jing,QIN Shan and LU An_huai.The micro-structure study of natural rutile modified by heat treatment[J].Acta Petrologica Et Mineralogica,2009,28(6):629-636. |
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| Authors: | ZHUANG Wei LUO Ze_min LIU Ying_xin WU Jing QIN Shan and LU An_huai |
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| Abstract: | The micro-structure of natural rutile heated and annealed under argon atmosphere was studied by means of X-ray Diffraction (XRD) and Transmission Electron Microscopy (TEM). The results indicate that the lattice of heated rutile specimens was expanded, and ilmenite appeared when the heating temperature reached 900℃ and 1 000℃. Like rutile, ilmenite is a kind of natural semiconductor mineral. It grew in the direction at a 31°angle with rutile's (010) planes and formed dual coupled semiconductor with rutile. The results of the UV-vis test indicate that the appearance of ilmenite in the rutile sample can effectively enhance the photocatalytic activity of the specimens. |
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| Keywords: | natural rutile ilmenite micro-structure heat treatment dual coupled semiconductor photocatalytic activity |
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