| 磁性纳米TiO_2/Fe_3O_4的制备及其光催化性能 |
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| 引用本文： | 邱东超,陈明日,何开棘,王开明.磁性纳米TiO_2/Fe_3O_4的制备及其光催化性能[J].光谱实验室,2011,28(5):2153-2157. |
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| 作者姓名： | 邱东超 陈明日 何开棘 王开明 |
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| 作者单位： | 辽宁科技大学理学院 辽宁省鞍山市千山中路185号114051 |
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| 基金项目： | 国家自然科学基金资助项目(50272002、50372001); 国家科技部863计划项目(2003AA302130) |
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| 摘 要： | 采用特殊液相沉淀法分两步制备了壳核结构的磁性纳米TiO2/Fe3O4,并讨论了TiO2/Fe3O4比例对其磁性的影响。利用XRD、TEM和VSM对其进行了表征,用它做催化剂,甲基橙溶液为降解目标,在日光作用下对其光催化活性进行了研究,并测出了其回收率。结果表明,在本实验条件下制备的磁性纳米TiO2/Fe3O4表现为超顺磁性,具有较强的光催化活性和较高的回收率。当TiO2∶Fe3O4为4∶1,在450℃焙烧30min条件下得到的催化剂,对20mg/L的甲基橙溶液在60min内降解率高达91.5%,明显高于纯TiO2的催化活性,在外加强磁场的作用下,此催化剂很快从溶液中分离出来,测得其回收率为88.2%。
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| 关 键 词： | 特殊液相沉淀法 磁性 光催化活性 |
Preparation of Magnetic Nanoparticles TiO_2/Fe_3O_4 and Its Photocatalytic Activity |
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| QIU Dong-Chao,CHEN Ming-Ri,HE Kai-Ji,WANG Kai-Ming.Preparation of Magnetic Nanoparticles TiO_2/Fe_3O_4 and Its Photocatalytic Activity[J].Chinese Journal of Spectroscopy Laboratory,2011,28(5):2153-2157. |
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| Authors: | QIU Dong-Chao CHEN Ming-Ri HE Kai-Ji WANG Kai-Ming |
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| Institution: | QIU Dong-Chao CHEN Ming-Ri HE Kai-Ji WANG Kai-Ming(School of Science,Liaoning University of Science and Technology,Anshan,Liaoning 114051,P.R.China) |
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| Abstract: | The core-shell magnetic nanoparticles TiO2/Fe3O4 was prepared by special liquid-phase precipitation method with two stages,and the influence of the proportion of TiO2/Fe3O4 on magnetism was discussed.The magnetic nanoparticles TiO2/Fe3O4 was characterized by XRD,TEM and VSM,the photocatalytic activity of magnetic nanoparticles TiO2/Fe3O4 was studied by the degradation of methyl orange under the sun,and its recyclability was counted.The magnetic nanoparticles TiO2/Fe3O4 showed paramagnetism,better photocatal... |
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| Keywords: | Special Liquid-Phase Precipitation Method Magnetism Photocatalysis Activity |
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