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以水稻秆为模板,成功合成了Fe3+掺杂BiVO4光催化剂,通过X-射线衍射分析、扫描电子显微镜和比表面积及孔径分析等对其进行了表征和分析.结果表明:制备的Fe3+掺杂BiVO4样品均为单斜白钨矿型,掺杂后样品的颗粒变小,比表面积增大.以金钨灯作为可见光光源,通过降解甲基橙,考察了Fe3+掺杂量对BiVO4可见光催化活性的影响规律以及催化剂投加量对光催化降解甲基橙的影响.与纯BiVO4比较,Fe3+掺杂有效提高了BiVO4的可见光催化活性,当掺杂量为6%时,样品的光催化效率最高,50 min内对甲基橙B的脱色率达到76%.当m(催化剂)∶m(甲基橙)为30时,对甲基橙溶液的脱色率能达到93%左右.

参考文献

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