聚乙烯亚胺对氧化锌纳米阵列形貌的影响  

Effect of Polyethyleneimine on the Morphology of ZnO Nanorod Arrays

作　　者：张春梅[1] 姚凤兰[1] 齐磊[1] 吴秋芳[1] 王思思[1] 孟涛[1] 

机构地区：[1]北京印刷学院,北京102600

出　　处：《光谱学与光谱分析》2013年第10期2762-2765,共4页Spectroscopy and Spectral Analysis

基　　金：北京市属高等学校人才强教计划资助项目(PHR201107145)资助

摘　　要：采用化学沉淀法,以硝酸锌和六次亚甲基四胺的水溶液为生长溶液,在涂覆氧化锌晶种层的玻璃衬底上制备了定向生长的氧化锌纳米棒阵列,并研究了添加剂聚乙烯亚胺的浓度对氧化锌纳米棒形貌和结构的影响。X射线衍射和场发射扫描电镜的结果表明,合成的氧化锌纳米棒阵列较为均匀致密,具有六方纤锌矿结构,且有沿(002)晶面择优生长的特性;随着聚乙烯亚胺浓度的增加,氧化锌纳米棒的直径减小,直径分布趋于均匀,且氧化锌纳米棒的形貌也从锥状转变为柱状结构;另外,聚乙烯亚胺的加入对氧化锌的生长速度具有抑制作用,当聚乙烯亚胺的浓度增加至0.012mol·L-1时,无氧化锌阵列生长。对氧化锌纳米棒阵列进行了拉曼光谱表征,结果表明,随着溶液中聚乙烯亚胺浓度的增加,氧化锌纳米棒的氧空位缺陷减少。最后,对聚乙烯亚胺浓度对氧化锌纳米阵列影响的机理进行了探讨。Highly ordered ZnO nanorod arrays were successfully synthesized on glass substrates coated by the ZnO seeding via a chemical method, and the effect of the polyethylenei mine（PEI） on the structural properties and morphology of ZnO nanorod ar- rays was investigated. The XRD and FESEM results showed that the ZnO nonorods were wurtzite structure, which was hexa- gonal in shape. And the nanorods grew densely and vertically on the substrate. With the PEI amount increasing, the average di- ameter of the nanorods decreased, and the growth rate was slower. The Raman spectra showed that the oxygen deficiency in theZnO lattice reduced with the increase in PEI concentration. Finally, possible mechanisms of the effect of PEI concentration on the ZnO nanorod structure were discussed.

关 键 词：聚乙烯亚胺 氧化锌纳米阵列 化学沉淀法 

分 类 号：O614[理学—无机化学]