摘要本课题是以制备无机纳米孔晶体并对其性能表征为研究目标,采用水热合成法,以氯化镍、水、氢氟酸、磷酸、乙二胺、氯化铕为原料,合成了无机纳米孔晶体,并制备了不同Eu3+掺杂比的无机纳米孔晶体,利用XRD、TEM和荧光光谱对所得样品的物相和形貌进行了表征的研究。TEM结果表明,当反应温度为180℃、反应时间为24小时时,得到的无机纳米孔功能材料晶体为锥形,无机纳米孔功能材料晶体排列无规则,晶粒的分散性较好,粒径的长度和大小不一。XRD表示当反应温度为180℃、反应时间为24小时并且掺杂比为0和5%的时候,得到的Ni3(PO4)2纳米孔材料结构与X射线衍射图谱完全吻合,但是当掺杂比为10%的时候,得到的Ni3(PO4)2纳米孔材料结构与X射线衍射图谱不吻合,说明当掺杂比为10%的情况下破坏了Ni3(PO4)2纳米孔材料的结构。由于镍本身吸收光,导致原本应该发红光的铕离子,现在只发一点紫光。44211
Abstract This paper was prepared in inorganic nanoporous crystal and to characterize the performance of research objectives, by hydrothermal synthesis method with chlorine
Nickel, water, hydrofluoric acid, phosphoric acid, ethylene diamine, europium chloride synthesized inorganic nanoporous crystals and prepared different Eu3+ Doped than crystalline inorganic nanopores by XRD, TEM sample of the resulting phase and morphology were studied characterization. TEM results showed that when the reaction temperature is 180 ℃, reaction time of 24 hours, the resulting crystals of inorganic nanoporous functional material is tapered, nanoporous inorganic functional materials arranged in irregular crystals, better dispersion of grains, grain size the length and sizes. XRD indicates that when the reaction temperature is 180 ℃, reaction time was 24 hours and the doping ratio of 0 and 5% of the time, resulting Ni3 (PO4)2 nanoporous material structure and X-ray diffraction pattern completely consistent, but when the doping ratio 10% of the time, resulting Ni3 (PO4) 2 nanoporous material structure and X-ray diffraction patterns do not match, indicating that when the doping ratio of 10% of the cases undermined the Ni3(PO4) 2nanoporous materials structure. Since the nickel itself absorbs light, which should lead to red-emitting europium ion, now just a little purple hair.
毕业论文关键词:无机纳米孔材料;水热合成法;Eu3+掺杂比
Keyword: Inorganic nano-porous material;Hydrothermal synthesis;Eu3+ doped ratio
目 录
引言 5
1.实验 6
2.1材料的制备 6
2.1.1试剂 6
2.1.2制备 6
2.2仪器 7
3.结果与讨论 8
3.1 X-射线粉末衍射 8
3.2形貌分析 10
3.3发光性能 15
结论 18
参考文献 18
致谢 19
引言
近年来,随着纳米材料的普及,无机纳米孔材料渐渐的进入人们的视线,越来越多
的人关注这个新材料。由于其独特规整的孔道结构和可调的结构特征,在酸碱催化、分离、离子交换、分子催化、光反应、纳米化学、电化学和生命科学等领域中扮演着日益重要的角色。沸石分子筛是一类结晶的微孔材料,具有均匀发达的微孔结构,可调节的活性位,良好的热稳定性和水热稳定性等特点,是现代石油工业中重要的择性催化剂,已在许多领域得到广泛应用。但是由于其较小的孔径,不利于大分子的吸附和扩散,大大限制了其在大分子催化转化的应用。介孔分子筛具有较大的孔径,能客服大分子扩散限制问题,弥补了微孔分子筛的不足,但介孔分子筛的水热稳定性很差,限制了其在工业上的应用。所以探索合成水热稳定的无机纳米孔功能材料,具有重要的意义。