【作者】 米艳；

【导师】 黄在银；

【作者基本信息】 广西民族大学 ， 应用化学， 2010， 硕士

【摘要】 纳米粒子形貌、尺寸和结构的可控合成是纳米科技发展的重要组成部分,是探索纳米材料纳米结构性能及其应用的基石。本论文就典型形貌钼酸盐功能纳米材料纳米结构的液相化学控制合成进行了研究,初步探讨了产物结构形貌与其性能间的相互关系。在探索不同尺寸和形貌的纳米材料空心结构方面,通过一系列不同粒径的CaMoO₄纳米空心球和纳米空心纺锤的调控合成,扩展了室温微乳液法在无机功能纳米空心结构控制合成中的应用。并初步探索了CaMoO₄纳米材料形貌结构和尺寸与其性能之间的相关性。以长链的阳离子表面活性剂作为结构导向模板,在液相体系中控制合成了由一维纳米结构组装成的CaMoO₄三维花状结构。室温条件下,在Triton-100稳定的微乳液体系中调控合成了由纺锤状结构花瓣组装而成的新颖的SrMoO₄三维花状结构。在CTAB稳定的微乳液体系中调控得到了准正方形的SrMoO₄二维片状结构。该二维SrMoO₄纳米片呈现出了特征的光学特性。通过调控液相反应体系参数合成了一系列不同粒径的四方相BaMoO₄和CdMoO₄八面体结构纳米晶,证实了纳米晶的生长行为与晶体结构对称性存在相关性。基于过渡金属钼酸盐优良的性能和广泛的应用价值,分别在室温微乳液体系中和辅助以水热热处理手段的微乳液体系中调控合成了一维MnMoO₄·H₂O纳米棒及菱面体α-NiMoO₄微粒。更多还原

【Abstract】 Shape-/size-controlled synthesis of nanoparticles is one of the most important parts of nanotechnology and nanosicence, and also the base of investigating the distinctive properties and applications of nanostructures. This thesis studied solution-based controlled synthesis of typical functional molybdates nanostructures, emphasizing on the relationship between the shape and properties of the obtained nanoparticles.In the aspect of exploring dimension and shape controlled synthesis of hollow nanostructures, obtained a series of different size CaMoO₄ hollow spheres and hollow spindles, expanded the area of control synthesis of hollow nanostructures by microemulsions route. The relationship between the shape / size of CaMoO₄ nanostructures and its properties was initially investigated. Using long-chain cationic surfactant CTAB as soft structure temple, control synthesized CaMoO₄ three-dimension （3D） flower-like nanostructures, which is self-assembled by one-dimension （1D） nanorods.Novel 3D flower-like SrMoO₄ nanostructures which constructed by nanospindles were obtained in the TritionX-100 microemulisons under room-temperature circumstance, and in the CTAB microemulsions, control synthesized 2D quasi-square shaped SrMoO₄ nanostructures. Some distinctive optical characteristics were found on the nanoplates.By the way of manipulated parameters of solution-based reaction system, synthesized a series of size-controlled tetragonal BaMoO₄ and CdMoO₄ octahedron. And the synthesized regular octahedron revealed the existence of relationship between nanocrystals growth behavior and crystal symmetry.On the bases of its excellent performance and its wide use in various fileds, we have manipulated synthesis 1D MnMoO₄·H₂O nanorods and novel 3Dα-NiMoO₄ microhombohedra via room-temperature microemulsions route and hydrothermal assisted microemulsions process, respectively.更多还原