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以钛酸丁酯为前驱体,经微波处理制备出TiO2溶胶.利用XPS、XRD、TEM、UV-Vis等手段对溶胶进行了表征,并考察了其光催化性能.结果表明,经微波处理4h后,溶胶中TiO2为锐钛矿结构,粒径10nm左右;XPS分析表明溶胶中钛原子是以+4价的形态存在,O元素以O H与O-Ti两种物相存在,C元素仅修饰在TiO2表面;该溶胶对甲基橙有较强的降解能力,当紫外光光照15min后,甲基橙脱色率达94.7%,经溶胶改性的氟碳涂层在紫外光照24h后,接触角由82°减小到13°,有望在自清洁涂料领域展现巨大的应用前景.

参考文献

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