以双子表面活性剂为模板剂的纳米氧化锌的制备

发布时间：2018-04-05 13:27

本文选题：纳米氧化锌　切入点：双子表面活性剂　出处：《武汉工程大学学报》2016年02期

【摘要】：以六水合硝酸锌和氢氧化钠为原料,双子表面活性剂1,4-正丁烷双(二甲基十六烷基溴化铵)为模板剂,采用直接沉淀法和水热合成法制备了纳米氧化锌.通过X射线衍射法和扫描电子显微镜分别对氧化锌的晶体结构和形貌进行了研究.结果表明,直接沉淀法和水热法所得纳米氧化锌的结构均为纤锌矿结构,但双子表面活性剂的加入、溶剂组成以及体系碱性变化都会对纳米氧化锌的形貌产生影响.以双子表面活性剂为模板时,直接沉淀法得到的纳米氧化锌为片状花瓣,而水热合成法得到的纳米氧化锌为针状花瓣.在水热合成法中,以双子表面活性剂为模板剂,随着体系中乙醇浓度的增加,花状氧化锌变为球状,而随着体系碱性的增强,针状纳米氧化锌被腐蚀,针状花瓣数目减少.
[Abstract]:Nanocrystalline zinc oxide was prepared by direct precipitation and hydrothermal synthesis with zinc nitrate hexahydrate and sodium hydroxide as raw materials and Gemini surfactant 1tnbutane bis (dimethyl cetylammonium bromide) as template.The crystal structure and morphology of zinc oxide were studied by X-ray diffraction and scanning electron microscope.The results show that the structure of ZnO obtained by direct precipitation method and hydrothermal method is wurtzite structure, but the addition of Gemini surfactant, the composition of solvent and the change of system alkalinity will affect the morphology of nano-ZnO.When the Gemini surfactant was used as the template, the nano-ZnO obtained by direct precipitation was a flake petal, while the nano-ZnO obtained by hydrothermal synthesis was a needle-shaped petal.In hydrothermal synthesis, with the increase of ethanol concentration, the flower-like zinc oxide becomes spherical with the increase of ethanol concentration, while the needle-like nano-zinc oxide is corroded and the number of needle-like petals decreases with the increase of the alkalinity of the system.
【作者单位】：武汉工程大学材料科学与工程学院;中冶武汉冶金建筑研究院有限公司;
【基金】：湖北省青年科技晨光计划(2014.5) 武汉市应用基础研究(2015010101010018) 武汉市软科学研究计划(2015040606010250)
【分类号】：TQ132.41;TB383.1

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