| 硅掺杂TiO2纳米管阵列的制备及光电催化活性的研究 |
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| 引用本文： | 吴建生,宿艳,陈硕,全燮.硅掺杂TiO2纳米管阵列的制备及光电催化活性的研究[J].功能材料,2009,40(9). |
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| 作者姓名： | 吴建生 宿艳 陈硕 全燮 |
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| 作者单位： | 大连理工大学,环境与生命学院,工业生态与环境工程教育部重点实验室,辽宁,大连,116024 |
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| 基金项目： | 国家自然科学基金资助项目(20507003) |
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| 摘 要： | 通过电化学沉积,在阳极氧化法制备的高度有序TiO2纳米管阵列表面均匀地沉积Si元素.扫描电子显微照片显示Si掺杂的TiO2纳米管垂直于基底定向生长.X射线衍射分析表明,所引入的Si可能掺入到TiO2的晶格中,因而提高了TiO2的热稳定性,抑制了金红石相的生成及晶粒的长大.紫外-可见漫反射分析表明Si掺杂的TiO2纳米管吸收边带发生了明显的蓝移,并且在紫外区的吸收强度明显增强.与未掺杂的TiO2纳米管相比,Si掺杂TiO2纳米管电极的紫外光电化学响应显著提高,其光电流密度是未掺杂的1.48倍.硅掺杂TiO2纳米管阵列光电催化降解五氯酚的动力学常数(1.651h-1)是未掺杂TiO2纳米管电极(0.823h-1)的2.0倍.
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| 关 键 词： | Ti02纳米管阵列 硅掺杂 光电催化 |
Preparation of silicon-doped TiO_2 nanotube arrays and its photoelectrocatalytic activity |
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| WU Jian-sheng
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SU Yan
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CHEN Shuo
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QUAN Xie.Preparation of silicon-doped TiO_2 nanotube arrays and its photoelectrocatalytic activity[J].Journal of Functional Materials,2009,40(9). |
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| Authors: | WU Jian-sheng SU Yan CHEN Shuo QUAN Xie |
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| Affiliation: | Key Laboratory of Industrial Ecology and Environmental Engineering;School of Environmental and Biological Science and Technology;Dalian University of Technology;Dalian 116024;China |
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| Abstract: | The ordered silicon-doped TiO2 nanotube arrays on a Ti sheet were fabricated by electrochemical anodization followed by electrodeposition.The SEM imagines showed that the obtained nanotube arrays were highly ordered and vertically oriented.The X-ray diffraction(XRD) analysis revealed that the introduced silicon might be incorporated into titania matrix,and hence helped to increase the thermal stability of titania,which was in favor of suppressing the formation of rutile and the growth of anatase crystallite... |
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| Keywords: | TiO_2 nanotube arrays silicon-doped photoelectrocatalytic activity |
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