| 磁性纳米TiO2／NiFe2O4光催化复合材料的制备及表征 |
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| 引用本文： | 刘潘,刘红,赵惠忠,张圆圆,孙旋.磁性纳米TiO2／NiFe2O4光催化复合材料的制备及表征[J].纳米科技,2009,6(1):52-57. |
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| 作者姓名： | 刘潘 刘红 赵惠忠 张圆圆 孙旋 |
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| 作者单位： | [1]吉林师范大学环境工程学院,吉林四平136000 [2]武汉科技大学资源与环境工程学院,湖北武汉430081 |
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| 基金项目： | 湖北省耐火材料与高温陶瓷重点实验室-省部共建国家重点实验室培育基地开放基金资助项目（G0607） |
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| 摘 要： | 采用均匀沉淀法在磁性NiFe2O4表面包覆TiO2，制备了一种新型纳米TiO2／NiFe2O4光催化复合材料。通过改变Ti和Ni物质量之比确定了复合材料最佳钛镍比，用X射线衍射、透射电镜、UV—vis漫反射、BET、TG—DSC、磁力学测试等手段对复合材料进行了表征，以甲基橙的水溶液为模拟污染物，评价样品的光催化性能：该复合材料在光照2h后，甲基橙的脱色率可达98．5％，是一种在可见光范围内有响应、便于回收、可重复使用的高效光催化剂。
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| 关 键 词： | 纳米TiO2 磁性NiFe2O4 复合材料 光催化 |
Preparation and Characterization of Magnetic Nano-TiO2/NiFe2O4 Photocatalytic Composite Material |
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| Authors: | LIU Pan LIU Hong ZHAO Hui-zhong ZHANG Yuan- yuan SUN Xuan |
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| Affiliation: | 1. College of Environmental Engineering ,Jilin Normal University, Siping 430081, China;2. College of Resources and Environment,Wuhan University of Science and Technology, Wuhan 430081, China) |
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| Abstract: | A novel magnetic-nanometer titanium TiO2/NiFe2O4 composite photocatalyst was prepared by means of the homogenous precipitation coating technique in the experiment, with prepareing nano-sized NiFe2O4 by hydrothermal method. Its optimal ratio of Ti/Ni was gained, and the morphological structure of the photocatalyst particles was characterized by XRD, TEM, UV-vis, BET, TG-DSC, and magnetism analysis. The photo-catalytic reactivity of samples was evaluated by using methyl orange aqueous solution as simulated contaminants. The results showed that the photo- catalytic decolorization ratio up to about 98.5% in 2h. The new composite photocatalyst is a highly effective decoloring agent, which have response in the visible light field and can be recovered and reused. |
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| Keywords: | nanometer-TiO2 magnetic NiFe2O4 composite material photocatalysis |
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