【摘要】 采用溶胶-凝胶技术,以钛酸丁酯[Ti（OC₄H₉）₄]为前驱体,加入聚乙二醇（polyethylene glycol,PEG）作为模板剂,在玻璃基片上制备了纳米氧化钛多孔薄膜。通过SEM观察了多孔薄膜的表面形貌,通过IR及XRD的测试分析表征了材料的结构,探讨了样品在溶胶-凝胶及烧结过程中的物理化学变化,测定了氧化钛的晶相成分。实验结果表明;通过调整H₂O/Ti（OC₄H₉）₄摩尔比及PEG的添加量可得到孔径范围在50～500 nm且孔径可调的多孔氧化钛纳米薄膜,此外成膜过程中的升温速率是决定薄膜孔结构优劣的一个重要因素。更多还原

【Abstract】 Nanocrystalline titania porous films were prepared on glass substrates with Ti(OC4 H9)4 as precursor and polyethy-lene glycol (PEG) as organic template by sol - gel process. The surface morphology of the films was observed by SEM. The chemical and physical changes took place during sol - gel and heat treatment were analyzed by means of IR and XRD. Experi-mental results show that nanocrystalline titania porous films with pore size in range of 50-500 nm are available, and pore di-mensions can be controlled through adjusting both n(H2O)/n[Ti(OC4 H9)4] and the amount of PEG. It is also found that heat-ing rate in calcining is very critical to obtain perfect porous structure.更多还原