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【目的】在无有机模板剂条件下,采用溶胶凝胶法于阳极氧化铝膜腔体内进行二氧化硅纳米纤维材料的合成研究。【方法】合成采用压力诱导的方法,考察了水解时间、化学剂量比对材料形貌的影响。实验制得的复合功能铝膜用于Fe~(2+)的分离,同时考察了溶液的pH值、流速等因素对分离的影响。【结果】纳米纤维仅在铝膜腔体内生长,而在铝膜表面没有残留,制得的纳米纤维长60μm,直径约为100nm。【结论】制得的纳米纤维高度有序,复合功能铝膜能成功应用于金属离子的吸附分离领域。
【Objective】 The synthesis of silica nanofibers in anodized aluminum film was investigated by sol-gel method in the absence of organic template. 【Method】 The pressure-induced synthesis method was used to investigate the effect of hydrolysis time and chemical dose ratio on the morphology of the material. The experimentally prepared composite functional aluminum film was used for the separation of Fe2 +, and the effects of pH, flow rate and other factors on the separation were also investigated. 【Results】 The nanofibers grew only in the aluminum film cavity without any residue on the surface of the aluminum film. The nanofibers produced were 60 μm in length and about 100 nm in diameter. 【Conclusion】 The prepared nanofibers are highly ordered and the composite functional aluminum film can be successfully applied in the field of metal ion adsorption and separation.