无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (10): 15-.

• 论文 • 上一篇    下一篇

两种制备方法下锌铈复合纳米材料的性能比较

吕印美1,张金生1,李丽华1,李秀萍2   

  1. 1.辽宁石油化工大学石油化工学院,辽宁抚顺 113001;2.东北大学材料与冶金学院
  • 发布日期:2011-10-19

Comparisons of properties of nanometer ZnO/CeO2 composite by two preparation methods

Lü Yinmei1 ,Zhang Jinsheng1,Li Lihua1,Li Xiuping2   

  1. 1.School of Petrochemical Technology,Liaoning University of Petroleum and Chemical Technology,Fushun 113001,China;2.School of Materials and Metallurgy,Northeastern University
  • Published:2011-10-19

摘要: 以四水硫酸高铈和七水硫酸锌为原料,碳酸铵为沉淀剂,分别采用直接沉淀法和异相沉淀法合成纳米氧化锌/二氧化铈复合材料。采用XRD,FT-IR和UV-Vis对产物进行表征分析。XRD分析表明,在相同的原料配比下,异相沉淀法合成的复合纳米材料中,铈的含量大于直接沉淀法合成的材料;FT-IR分析表明,异相沉淀法中,由于氧化锌对二氧化铈的表面包覆,样品分散性增加;UV-Vis分析表明,两种方法合成的样品都具有优异的紫外吸收性能,只是波段不同:异相沉淀法合成的产品的紫外吸收侧重于UVA波段,而直接沉淀法合成的产品的紫外吸收侧重于UVC波段。另外水中分散性实验还表明,采用异相沉淀法合成的纳米材料分散性优于前者。

关键词: 氧化锌, 二氧化铈, 直接沉淀, 异相沉淀

Abstract: Using Ce(SO4)2•4H2O and ZnSO4•7H2O as raw materials,(NH4)2CO3 as precipitator,nano-sized ZnO/CeO2 composite particles were prepared by direct precipitation method and heterogeneous precipitation method respectively.Products were characterized by XRD,FT-IR,and UV-Vis.Result of XRD indicated that the content of Ce was greater by the heterogeneous precipitation method than that by direct precipitation method under the same mix ratio of raw materials;result of FT-IR indicated that dispersion of the sample prepared by the heterogeneous precipitation method was better than that prepared by direct precipitation method because of coating of ZnO on the surface of CeO2;UV-Vis analysis showed that the two synthesized samples both had excellent UV absorption properties,but the bands were different: the sample prepared by heterogeneous precipitation method focused on UVA band,and the sample prepared by direct precipitation method focused on UVC band.Dispersion experiment in water indicated that the sample prepared by the heterogeneous precipitation method had a better dispersion than that prepared by the other method.

Key words: zinc oxide, cerium oxide, direct precipitation, heterogeneous precipitation

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