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| ZnO/Al_2O_3复合纳米颗粒的制备与表征 | |
| 引用本文： | 洪若瑜,刘璐,刘锋,李洪钟.ZnO/Al_2O_3复合纳米颗粒的制备与表征[J].中国粉体技术,2005,11(4):10-13. |
| 作者姓名： | 洪若瑜 刘璐 刘锋 李洪钟 |
| 作者单位： | 1. 苏州大学,化学化工学院江苏省有机重点实验室,江苏,苏州,215006;中国科学院过程工程研究所,多相反应重点实验室,北京,100080 2. 苏州大学,化学化工学院江苏省有机重点实验室,江苏,苏州,215006 3. 中国科学院过程工程研究所,多相反应重点实验室,北京,100080 |
| 基金项目： | 国家自然科学基金（编号：20476065）、中国科学院多相反应重点实验室（编号：2003-5）、国家教委留学回国基金的资助和江苏省有机合成重点实验室的课题资助. |
| 摘 要： | 为研究ZnO/Al2O3复合纳米颗粒在涂料、化妆品等领域的应用,采用直接沉淀法制备了纳米ZnO,用硫酸铝水解生成的Al2O3对纳米ZnO进行了表面改性。采用IR、TEM、SEM、XRD等手段对改性前后的粉体进行表征。分析结果表明,改性后粉体颗粒的团聚现象减轻。粉体的光催化降解甲基橙的实验研究表明,改性后ZnO粉体的光催化活性明显下降,进一步证明纳米ZnO颗粒表面存在Al2O3的包覆层。 |
| 关 键 词： | 纳米颗粒 氧化锌 三氧化二铝 表面改性 光催化 |
| 文章编号： | 1008-5548（2005）04-0010-04 |
| 收稿时间： | 2005-03-15 |
| 修稿时间： | 2005年3月15日 |
Synthesis and Characterization of ZnO/Al2O3 Nanoparticles |
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| HONG Ruo-yu,LIU Lu,LIU Feng,LI Hong-zhong.Synthesis and Characterization of ZnO/Al2O3 Nanoparticles[J].China Powder Science and Technology,2005,11(4):10-13. | |
| Authors: | HONG Ruo-yu LIU Lu LIU Feng LI Hong-zhong |
| Abstract: | In order to study the ZnO/Al2O3 composite nanoparticles used in paintings and cosmetics,ZnO nanoparticles were prepared by homogeneous precipitation using ZnSO4·7H2O and NaOH,then they were coated with Al2O3 by the hydrolysis of Al2(SO4)3. The prepared nanoparticles were characterized by IR,TEM,XRD and SEM.Comparing the SEM of ZnO and ZnO/Al2O3,it was found that the agglomeration of nanoparticles was greatly reduced. In addition, photodegradation of methyl orange in aqueous solution is performed using ZnO and ZnO/Al2O3 nanoparticles as photocatalysts. The results showed that the photocatalytic activity of ZnO/Al2O3 nanoparticles was reduced, which further illustrated that Al2O3 was coated on the surface of ZnO nanoparticles as a thin layer. |
| Keywords: | nanoparticles ZnO Al2O3 surface modification photocatalysis |
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