| 利用铁酸镍控制二氧化钛结构相变提高其光催化性能研究 |
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| 引用本文： | 杨加栋,尹静,段月琴,别利剑.利用铁酸镍控制二氧化钛结构相变提高其光催化性能研究[J].天津理工大学学报,2008,24(6). |
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| 作者姓名： | 杨加栋 尹静 段月琴 别利剑 |
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| 作者单位： | 天津理工大学,材料科学与工程学院,天津,300191 |
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| 基金项目： | 天津市高等学校科技发展基金
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天津市材料物理与化学重点学科
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| 摘 要： | 分别采用共沉淀法和溶胶-凝胶法制备铁酸镍和二氧化钛纳米粉体,探讨了铁酸镍纳米掺杂对二氧化钛"锐钛矿"→"金红石"的晶体结构转变及其光催化活性的影响.结果表明,铁酸镍的掺杂可抑制二氧化钛由"锐钛矿"到"金红石"的结构相变,显著提高其光催化活性,在最佳掺杂浓度时,其光催化降解曙红的效率可以提高约2倍.
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| 关 键 词： | 铁酸镍 二氧化钛 光催化 结构相变 纳米复合 |
Controlling TiO2 phase transformation using NiFe2O4 dopant to increase the photocatalytic activity |
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| YANG Jia-dong,YIN Jing,Duan Yue-qin,BIE Li-jian.Controlling TiO2 phase transformation using NiFe2O4 dopant to increase the photocatalytic activity[J].Journal of Tianjin University of Technology,2008,24(6). |
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| Authors: | YANG Jia-dong YIN Jing Duan Yue-qin BIE Li-jian |
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| Abstract: | In this paper,NiFe2O4,TiO2 and NiFe2O4 doping TiO2 nanoparticles were prepared by chemical precipitation and sol-gel method,respectively.Samples prepared were characterized with X-ray diffraction.Also studied were the influence of NiFe2O4 dopant on the anatase to rutile phase transformation of TiO2 and the photocatalytic activity of NiFe2O4 doped TiO2 nanopowders by eosin degradation under sunlight irradiation.The results showed that the phase transformation of TiO2 from anatase to rutile were restrained by NiFe2O4 doping.In addition,the photocatalytic activity of TiO2 doping with appropriate NiFe2O4 content could be improved obviously,and an increase in the activity by a factor of 2 relative to pure TiO2 nanomaterials was obtained under the optimal conditions. |
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| Keywords: | NiFe2O4 titania photocatalysis phase transformation nanocoposite |
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