| Ag负载TiO2纳米管微波辅助水热法制备及其光催化性能 |
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| 引用本文： | 陈淑海,徐耀,吕宝亮,吴东.Ag负载TiO2纳米管微波辅助水热法制备及其光催化性能[J].物理化学学报,2011,27(12):2933-2938. |
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| 作者姓名： | 陈淑海 徐耀 吕宝亮 吴东 |
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| 作者单位： | 1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| 摘 要： | 以微波辅助水热法制备了二氧化钛纳米管,然后通过浸渍法在其表面负载了银纳米颗粒.所得样品用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、氮吸附、X射线光电子能谱(XPS)、紫外-可见漫反射等测试方法表征.微波加热处理可以大大缩短反应时间,产物为无定型纳米管,经高温焙烧后转变成锐钛矿型二氧化钛.所得纳米管的外径为7-8 nm,内径为5-6 nm,管长约200 nm,比表面积可达371 m2·g-1.负载的银分散在纳米管的表面,对纳米管的结构与晶型没有影响,但是拓宽了二氧化钛的光吸收范围,使吸收边红移至可见光区,并且有效抑制了光生电子空穴的复合.在可见光降解罗丹明B的实验过程中,与Ag负载的P25及纯二氧化钛纳米管相比,Ag负载二氧化钛纳米管具有更高的可见光催化活性,并且当Ag/Ti 物质的量的比为0.5%时,可见光催化性能最好.
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| 关 键 词： | 二氧化钛纳米管 微波合成 银负载 可见光催化 |
| 收稿时间： | 2011-07-20 |
| 修稿时间： | 2011-10-19 |
Microwave-Assisted Hydrothermal Synthesis of Ag-Loaded Titania Nanotubes and Their Photocatalytic Performance |
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| CHEN Shu-Hai,XU Yao,Lü Bao-Liang,WU Dong.Microwave-Assisted Hydrothermal Synthesis of Ag-Loaded Titania Nanotubes and Their Photocatalytic Performance[J].Acta Physico-Chimica Sinica,2011,27(12):2933-2938. |
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| Authors: | CHEN Shu-Hai XU Yao Lü Bao-Liang WU Dong |
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| Institution: | 1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, P. R. China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, P. R. China |
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| Abstract: | Ag-loaded titania nanotubes were synthesized by a microwave-assisted hydrothermal method and were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),nitrogen adsorption,X-ray photoelectron spectroscopy(XPS),and UV-visible(UV-Vis) diffuse reflectance spectroscopy.The titania nanotubes were found to be in the anatase phase after calcination.The length of the synthesized titania nanotubes was about 200 nm,the average outer diameter was 7-8 nm,the inn... |
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| Keywords: | Titania nanotube Microwave synthesis Silver loading Visible photocatalysis |
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