利用水热法通过调节溶液的pH值合成了不同物相和形貌的磷酸铋.用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对样品进行了物相和形貌表征,并以10 mg·L-1的亚甲基蓝溶液为目标降解物,对材料的光催化降解性能进行了评价.结果表明:前驱物溶液的pH值对磷酸铋的形貌、物相和光催化性能都有较大影响.前驱物溶液pH值为1.3时制得的磷酸铋的光催化性能最高,室温汞灯照射20 min,亚甲基蓝的降解率可达到99.61％.
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