Preparation and modification of nano-ZnO/CeO2 composite oxides

doi:10.3969/j.issn.0438-1157.2013.08.050

CIESC Journal ›› 2013, Vol. 64 ›› Issue (8): 3054-3061.DOI: 10.3969/j.issn.0438-1157.2013.08.050

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Preparation and modification of nano-ZnO/CeO₂ composite oxides

LI Xiuping^1,2, ZHAI Yuchun¹, MA Peihua¹, ZHAO Rongxiang², LI Lihua², ZHANG Jinsheng²

1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China;
2. College of Chemistry, Chemical Engineering and Environmental Engineering, Liaoning Shihua University, Fushun 113001, Liaoning, China

Received:2012-12-03 Revised:2013-05-17 Online:2013-08-05 Published:2013-08-05
Supported by:
supported by the National Basic Research Program of China(2007CB613603).

纳米ZnO/CeO₂复合氧化物的制备及其改性

李秀萍^1,2, 翟玉春¹, 马培华¹, 赵荣祥², 李丽华², 张金生²

1. 东北大学材料与冶金学院, 辽宁沈阳 110004;
2. 辽宁石油化工大学化学化工与环境学部, 辽宁抚顺 113001

通讯作者: 翟玉春
作者简介:李秀萍(1975- ),女,讲师,博士研究生。
基金资助:
国家重点基础研究发展计划项目(2007CB613603)。

Abstract

Abstract: Zinc oxide was prepared by the combustion method.ZnO/CeO₂ composite oxides were synthesized by the precipitation method with zinc oxide as the coated object.The samples were characterized by XRD,SEM,IR,TG-DTA,UV-Vis and TEM.ZnO was coated by CeO₂ and composite oxides were formed.The composite oxides were modified with modifier reagent,and modification effect was evaluated by the degree of oil-affinity.The type of modifier,mass ratio of modifier,reaction temperature and pH value of solution were studied.The optimal reaction conditions were as follows:modifier stearate,temperature 60℃,mass ratio of modifier 4% of composite oxides,pH value of solution 7.Particle size became smaller,dispersion of samples was better and the degree of oil-affinity of sample was improved after the samples were modified.

Key words: ZnO/CeO₂, composite oxides, modification

摘要： 以燃烧法制备氧化锌并以其为包裹对象用沉淀法合成ZnO/CeO₂复合氧化物,采用XRD、SEM 、IR、TG-DTA、UV-Vis、TEM对样品进行表征,结果表明氧化铈以包覆形式与氧化锌形成复合氧化物。用改性剂对复合氧化物进行改性研究,以亲油化度考察改性剂的类型、改性剂的用量、改性温度、pH值对改性效果的影响。实验结果表明:当选用硬脂酸钠为改性剂且用量为ZnO/CeO₂的4%,改性温度为60℃,pH值为7时,样品粒径明显变小,分散性变好,亲油化度明显提高,可获得最佳改性效果。

关键词: ZnO/CeO₂, 复合氧化物, 改性

CLC Number:

O614.33

LI Xiuping, ZHAI Yuchun, MA Peihua, ZHAO Rongxiang, LI Lihua, ZHANG Jinsheng. Preparation and modification of nano-ZnO/CeO₂ composite oxides[J]. CIESC Journal, 2013, 64(8): 3054-3061.

李秀萍, 翟玉春, 马培华, 赵荣祥, 李丽华, 张金生. 纳米ZnO/CeO₂复合氧化物的制备及其改性[J]. 化工学报, 2013, 64(8): 3054-3061.

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Preparation and modification of nano-ZnO/CeO₂ composite oxides

纳米ZnO/CeO₂复合氧化物的制备及其改性

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