【摘要】 以钛酸四丁酯和硝酸铋为原料,用柠檬酸热解法制备了钛酸铋光催化剂,并研究了焙烧温度、铋钛比对样品的结构和光催化活性的影响.用X射线衍射表征了样品的晶相结构,用SEM检测样品的形貌.以次甲基蓝为模拟污染物,评价了样品的光催化性能,发现当铋钛比为8∶1,焙烧温度873 K时样品的光催化活性最高.更多还原

【Abstract】 Bismuth titanate powders are prepared by the citric-combustion method using bismuth nitrate and titanium butoxide as the starting precursors,and the effects of sintering temperature and the ratio of bismuth to titanium on their structure and photocatalytic activity were studied.The powders were characterized by X-ray diffractometry(XRD) and scanning electron microscopy(SEM).The photocatalytic property of the samples was probed by using the methyl blue as simulated contaminants.The results show that bismuth titanate powder prepared with the ratio of bismuth to titanium of 8∶1 at the sintering temperature of 873K has the best photocatalytic activity.更多还原