One-dimensional Nano-γ-AlOOH Precursor Fabricating Via Hydrothermal Route And Its Calcination

One-dimensional nano-structure alumina has particular properties that are different from its particle. It is of great significance to do research in this field for its wild application. But compared with alumina particle, it is much more difficult to fabricate one-dimensional nano-alumina. Up to now, there are two ways to fabricate this nano-material: vapour synthesis and liquid synthesis. Vapour synthesis needs high quality fabrication conditions, so it is difficult to be industrialized. Liquid synthesis needs relatively easy reaction conditions and can be industrialized, but it is hard to fabricate nanorod and nonofiber alumina which is well crystallized and has smooth surface. This dissertation puts emphasis on hydrothermal synthesis and fabricates two kinds of nano-structure alumina: nanorod and nanofiber. The main researches are as followed:1,Take NaOH as precipitating agent to fabricateγ-AlOOH nanorod, use TEM and XRD to characterize the product, research influence of fabrication conditions on morphology, specific surface area and pore volume of nanorodγ-AlOOH; analyze its growth mechanism.2,Take NaOH as precipitating agent to fabricateγ-AlOOH nanofiber, use TEM and XRD to characterize the product, research influence of fabrication conditions on morphology, specific surface area and pore volume of nanorodγ-AlOOH; analyze its growth mechanism.3,Calcineγ-AlOOH nanorod and nanofiber to fabricateγ-Al2O3 nanorod and nanofiber; analyze calcination influence on morphology, structure and specific surface area of product; do research on heat decomposition process ofγ-AlOOH nanorod and nanofiber.