摘要
结合离子交换-高温烧结法,由钛酸钠纳米线制备了TiO_2纳米线。通过XRD、Uv-vis漫反射和SEM等测试手段,探讨离子交换时间和高温烧结温度对制备TiO_2纳米线的影响,并以甲基橙为目标污染物测试其光催化性能。结果表明:离子交换时间越长越有利于钛酸纳米线的形成,离子交换48h时钛酸钠纳米线基本转换成为钛酸纳米线;过低的烧结温度不利于TiO_2纳米线的形成,烧结温度650℃时钛酸纳米线基本分解成为TiO_2纳米线;钛酸钠纳米线几乎没有光催化性能,而TiO_2纳米线具有很强的光催化性能。
TiO_2nanowires were synthesized by the ion-exchange and high temperature sintering of sodium titanate nanowires.The effect of ion exchange time and sintering temperature on the formation of TiO_2 nanowires by using X-ray diffraction analysis,Uv-visible diffuse reflectance spectroscopy technique,and scanning electron microscopy were studied.The photocatalytic activity of TiO_2 nanowires was tested using methyl orange as a target pollutant.The results show that a longer ion exchange time is ideal for the formation of titanic acid nanowires,and the sodium titanate nanowires are completely transformed into titanic acid nanowires when the ion exchange time is 48 h.A lower sintering temperature is not beneficial to the formation of TiO_2 nanowires,and it is found that the titanic acid nanowires could be converted into TiO_2 nanowires at 650℃.Sodium titanate nanowires has almost no photocatalytic activity,while TiO_2 nanowires exhibit a much higher photocatalytic activity.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2015年第12期58-62,共5页
Journal of Materials Engineering
基金
国家自然科学基金资助项目(21367020)
内蒙古自然科学基金资助项目(2011BS0204)
内蒙古高等学校科研项目资助(NJSY13050)
