摘要MoO3纳米材料在超级电容器、光催化、锂离子电池、智能窗等领域有广阔的应用前景，引起了广泛的研究。本课题利用水热法制备三氧化钼纳米带，通过XRD、SEM、TEM和Raman光谱对其形貌和微观结构进行表征，研究了反应温度、加热时间对纳米带形貌的影响，研究发现制备的MoO3纳米带具有层状结构，为正交相α-MoO3，纳米带的宽度在100-250nm，长度在几微米到十几微米。随着反应温度增加，纳米带的长度增加，两端趋于锥状，正交相MoO3纳米带为各向异性生长。随着加热时间增加，纳米带表面完整光滑。以MoO3纳米带为电极材料制备了超级电容器电极，并研究了其电容特性，结果发现随着扫描速率增加，电极的比电容增加。制备了不同质量比的电极，探究质量比对电极比电容的影响。21842
关键词  水热法  MoO3  纳米带  微观结构  超级电容器
毕业论文设计说明书（论文）外文摘要
Title   Synthesis  and  Properties  of  MoO3  Nanostructures                                                                       
Abstract
MoO3 nano-materials have broad applications in supercapacitors, lithium ion batter-ies, smart windows and photocatalysis. In this thesis, the MoO3 nanobelts are pre-pared by a simple hydrothermal. The morphology and structure of the deposited MoO3 nanobelts are characterized by XRD, SEM, TEM and Raman spectroscopic analysis. The results indicated that the structure of MoO3 nanobelts is orthorhombic α-MoO3 with the width of 100-250 nm and the length of about several micrometers to ten micrometers. The effects of reaction temperature and heating time to the reac-tion are also studied. With the increase of the reaction temperature, the length of MoO3 nanobelts increases and it tends tapered ends, and the Orthorhombic α-MoO3 nanobelts anisotropic growth. As the reaction time increases, the nanobelts become perfect and smooth. In the study of supercapacitors electrode prepared by MoO3 nanobelts, it was found that the capacitance of the electrode increases as the scan rate increases. The electrode with different mass ratio of MoO3, acetylene black and PTFE is also prepared. It is suggested that the mass ratio is responsible for the capac-itance.
Keywords  hydrothermal  MoO3  nanobelts microstructure supercapacitors
 目   次
1 引言    1
1.1  三氧化钼的结构    1
1.2  三氧化钼的制备方法    3
1.3  三氧化钼的用途    4
1.4  三氧化钼纳米结构的研究进展    6
1.5  本课题的研究内容和研究目的    7
2  实验过程及表征分析    8
2.1  MOO3纳米带的制备方法    8
2.2  以水热法制备MOO3纳米带    8
2.3  表征方法    12
2.4  电化学性能研究    13
3  实验结果及讨论    16
3.1  水热法制备MOO3纳米带的表征分析    16
3.2  反应条件对MOO3纳米带形貌的影响    18
3.3  MOO3电极的电化学性能    23
结  论    27
致  谢    28
参考文献29
1 引言
钼是一种活泼的过渡族金属，与氧可以形成MoO3、MoO2两种钼氧化合物。这两种氧化钼受到人们的广泛关注，是由于它们结构稳定，制备简单，应用广泛。本课题主要研究的是MoO3¬纳米材料。 MoO3纳米结构的制备及其性能研究:http://www.youerw.com/cailiao/lunwen_14237.html