| At present, template method has become the first choice for the preparations of nano-materials, due to its easiness, convenience and the regular structures of products. However, there are some disadvantages, such as unclear mechanism, expensiveness, and complicated steps, which would limit the applications. In this method, hydrogel has been widely used as the template to prepare the inorganic nano-materials. Thus, extensive attention has been focused on hydrogelator in the wide ranges of applications. In this study, two inorganic nano-materials: iron oxide nanowires and silica nanotubes have been synthesized by using amygdalin myristic esters as template. The main results are as followed:(1) The amygdalin myristic esters were synthesized through enzyme catalysis method. Its structure was characterized by IR, 1H NMR, 13C NMR and MS. The results of its gellation ability showed that medium polarity and aromatic solvents could be gelated by the gelator. Besides, its gel behaviors in salt solutions, polymer solutions and at different pH solutions were studied respectively.(2) The relationship between the gel temperature and the content in the n-hexane - water system was studied. The gel temperature decreased with the increasing of n-hexane content. Besides, we found that the content of n-hexane could change the shape and the surface appearance of the system using SEM. Generally, the iron ions were reduced or precipitated to the template to prepare the iron oxide nanowires in the template method. However, in our method, iron oxide nanowires were synthesized by arranging iron oxide nanoparticles dispersed in hexane. The morphology was characterized by SEM. The components were analyzed by TGA / DTA, which presumed to be ferric oxide.(3) Silica nanotubes were prepared successfully using acidic gelator amygdalin myristic esters as the template, APS as the CSDA and the TEOS as silica source in water environment. Moreover, the parameters of the synthesis were explored and discussed. |
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