摘要
采用水热法合成了粒径为25 nm的CeO2纳米线,采用X射线衍射仪(XRD)、扫描电镜(SEM)、透射电镜(TEM)对其进行了表征和观察;同时考察了沉淀剂种类、沉淀剂浓度、分散剂种类和反应时间等因素对纳米线的合成的影响,最终得到合成纳米线的最佳工艺条件为:以氯化铈为铈源,氢氧化钠为沉淀剂,CTAB为分散剂时所合成的纳米线分散性好,粒径均一。讨论了纳米线的影响因素。
CeO2 nanowires were synthesized by hydrothermal method with diameter of 25 nm,X-ray diffraction(XRD),scanning electron microscopy(SEM) and transmission electron microscopy(TEM) were used to characterize and observe the product.Effects of precipitant,agent types and other factors on the synthesis of nanowires were investigated,and the optimum conditions for synthesis of nanowires were determined as cerium chloride and NaOH as the precipitating agent,and CTAB as dispersant.
引文
[1]Mori T,Drennan J,Wang Y R,et al.Influence of nano-structure on electrolytic properties in CeO2 based sys-tem[J].J Therm Anal Calorim,2002,70(2):309-319.
[2]周新木,岑志军,李静,等.掺氟复合磨料的制备及对单晶硅抛光性能的影响[J].稀土,2012,33(6):1-4.
[3]徐光青,郑治祥,汤文明,等.S2-掺杂对Ce3+-SiO2材料发光性能的影响[J].硅酸盐学报,2007,35(1):10-15.
[4]李梅,张晓伟,柳召刚,等.氧化铈在玻璃中的应用[J].稀土,2011,32(3):80-85.
[5]周新木,陈慧勤,董雪平.无机盐模板剂法合成介孔CeO2[J].稀土,2009,30(6):31-34.
[6]Masui T,Fujiwara K,Machida K,et al.Characterizationof cerium(IV)oxide ultrafine particles prepared usingreversed micelles[J].Chemistry of Materials,1997,9(10):2197-2204.
[7]Cao Changyan,Cui Zhimin,Chen chaoqiu,et al.Ceriahollow nanospheres produced by a template-free micro-wave-assisted hydrothermal method for heavy metal ionremoval and catalysis[J].J Phys Chem C,2010,114:9865-9870.
[8]Mai Haoxin,Sun Lingdong,Zhang Yawen,et al.Shape-selective synthesis and oxygen storage behavior of ceriananopolyhedra,nanorods,and nanocubes[J].J PhysChem B,2005,109:24380-24385.
[9]赵晓兵,游静,陆晓旺,等.CeO2纳米管的水热合成、表征及性能研究[J].无机材料学报,2011,26(2):159-164.
[10]Chen T L,Mullins D R.Ethylene glycol adsorption andreaction over CeOX(111)thin films[J].J Phys ChemC,2011,115:13725-13733.
[11]Yang Songwang,Gao Lian.Controlled synthesis and self-assembly of CeO2 nanocubes[J].J Am Chem Soc,2006,128:9330-9331.
[12]Wen Cun,Zhu Yuan,Ye Yingchun,et al.Water gasshift reaction on metal nanoclusters encapsulated in me-soporous ceria studied with ambient-pressure X-rayphotoelectron spectroscopy[J].ACS Nano,2012,6(10):9305-9313.
[13]谢丽英,柳召刚.纳米氧化铈粉体的制备技术研究进展[J].稀土,2007,28(2):70-76.