溶剂热微乳法制备纳米碳酸锶及其表征-化学专业毕业论文.docxVIP

学士学位论文题目：溶剂热微乳法制备纳米碳酸锶及其表征姓名院系专业年级学号指导教师年月日溶剂热微乳法制备纳米碳酸锶及其表征摘要：本文以硝酸锶和碳酸铵为原料、CTAB(十六烷基三甲基溴化铵)/正丁醇/水/正庚烷微乳液为溶剂，利用溶剂热微乳法制备碳酸锶纳米材料。主要考察Wo的大小、反应温度T对碳酸锶结构和形貌的影响。采用X射线粉末衍射(XRD)、透射电镜(TEM)和傅立叶变换红外光谱(FI-IR)对产物进行了表征。结果表明，除了150℃条件外，不同条件下得到的碳酸锶粉体的晶型均为斜方晶系；在Wo=20时，反应温度为室温、120℃条件下制得的样品是由近似球形颗粒组成；反应温度为150℃得到的产品为棒状结构，表明反应温度对碳酸锶的形貌有影响。关键词：溶剂热微乳法；碳酸锶；纳米材料Research Progress of Microemulsion-Assisted Solvothermal Method for Preparing strontium carbonate Nanomaterials(School of Chemistry and MaterialsScienceLudongUniversity Yantai 264025)AbstractUsing strontium nitrate and ammonium carbonate as strontium and carbonate source, cetyl trimethyl ammonium bromide (CTAB)/n-butanol/H2O/heptane as solvent, SrCO3nanomaterials were synthesized by Microemulsion-assisted solvothermal method.The effects of Wo(ratio of surfactant to cosurfactant) and reaction temperature on the structure and shape of crystals were mainly investigated. The purified SrCO3crystals was characterized by X-ray diffraction (XRD), fourier transition infrared spectroscopy (FT-IR), and transmission electron microscope (TEM). The results showed that in adddition to the reaction temperature of 150℃, strontium carbonate nanomaterialssynthesized under other conditionwereorthorhombic crystal, and when Wowas fixed as 20, the samples consisted of approximately spherical particles at room temperature and 120℃, and the rod-like structure were observed at 150℃, Which indicatedthe morphology of SrCO3 crystals were affected by the reaction temperature.Key WordsMicroemulsion-assisted solvothermal method;Strontium carbonate;Nanomaterials目录1引言11.1纳米碳酸锶的性质11.2纳米碳酸锶的制备方法11.3溶剂热微乳法31.4溶剂热微乳法中影响纳米粒子制备的因素41.5选题的目的和意义62 实验部分62.1实验仪器和试剂62.2实验过程73 结果与讨论83.1 XRD分析83.2 反应温度的影响93.3红外光谱图分析103.4 形貌分析104.结论12参考文献121引言纳米碳酸锶是21 世纪发展起来的新型纳米固体材料，由于碳酸锶粒子达到纳米水平后，其晶体的表面电子结构发生变化，产生了大尺度碳酸锶不具有的新特性。从而在电子工业、磁性材料、陶瓷釉及特种玻璃等许多领域有着更广泛的应用[1]。1.1纳米碳酸锶的性质以纳米碳酸锶为添加剂制成的样品具有十分优异的性能，如高磁导率、低损耗、高饱和磁化强度等性质，可应用于开关电源、变压器、传感器、电容器、扬声器、阻尼器件、磁印刷等，可实现器件的微型化、轻型化、高频化以及多功能化[2]。用纳米碳酸锶制备彩色显