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pH值对Bi2WO6粉体的微波水热法合成及光催化性能的影响

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Abstract:

以Na2WO4·2H2O和Bi(NO3)3·5H2O为原料,采用微波水热法通过调节pH值在200℃合成出花簇状和片状Bi2WO6粉体。利用X射线衍射、场发射扫描电子显微镜、透射电子显微镜、选区电子衍射和高分辨透射电子显微镜等对Bi2WO6粉体进行了表征,并对合成粉体的光催化性能进行了研究。结果表明pH值对Bi2WO6粉体的物相、形貌及光催化性能均有较大影响,在pH=9.5时合成的薄片状Bi2WO6粉体的光催化效果最佳,在汞灯照射3h时显丹明B降解率达到95%。

References

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