A General Method for the Design of Nanostructured Metal Oxides and Hybrid Composites

建议标题：设计纳米结构金属氧化物和杂化复合材料的通用方法建议编号：CTS-0129190主要研究人员：古斯塔沃·拉森研究所：内布拉斯加大学这项建议的目的是发展从过渡金属和氧化物制备纳米级球形粒子和细丝的电流体动力学和化学方法。溶胶-凝胶化学与电力驱动的液体喷射和液滴相结合，将被用于制造均匀的金属和有机-无机混合颗粒和纤维沉积。钛、钒、硅和铝的金属醇氧化物将在存在溶剂混合物的情况下使用，以在电驱动射流中影响纤维和颗粒的形成。将尝试用有机树脂包覆的纳米玻璃纤维的制造。计划使用一种新型的同心管进给来设计更复杂的结构。将使用电子显微镜、漫反射傅里叶变换红外光谱和程序升温分解来进行基本表征。将与西班牙科学家建立国际合作关系。这家西班牙集团在电喷雾形成方面拥有专业知识，并将协助这一过程的设计和建模。一个工业合作伙伴将提供学生支持和设备。这些方法制备的材料具有很高的比表面和体积比，具有作为催化剂和吸附剂的潜力。

AbstractProposal Title: A General Method for the Design of Nanostructured Metal Oxides and Hybrid CompositesProposal Number: CTS-0129190Principal Investigator: Gustavo LarsenInstitution: University of NebraskaThe objective of this proposal is to develop electrohydrodynamic and chemical methods for fabricating nanoscale spheroidal particles and filaments from transition metals and oxides. Sol-gel chemistry in conjunction with electrically driven liquid jets and droplets will be used to make uniform metal and hybrid organic-inorganic particles and fibrous deposits. Metal alkoxides of Ti, V, Si, and Al will be used in the presence of solvent mixtures to effect fiber and particle formation at electrically driven jets. The fabrication of nanoscale glassy fibers sheathed with an organic resin will be attempted. The design of more complex structures using a novel concentric-tube feed is planned. Basic characterization will be performed using electron microscopy, diffuse reflectance Fourier transform infrared spectroscopy, and temperature-programmed decomposition. An international collaboration with scientists from Spain will be established. The Spanish group has expertise in electrospray formation and will assist in the design and modeling of this process. An industrial partner will provide student support and equipment. The materials produced by these methods possess high surface-to-volume ratios and have potential for use as catalysis and sorbents.