| BiPO_4/BiVO_4复合材料的制备及可见光催化活性 |
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| 引用本文： | 刘琼君,林碧洲,李培培,高碧芬,陈亦琳.BiPO_4/BiVO_4复合材料的制备及可见光催化活性[J].高等学校化学学报,2017,38(1). |
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| 作者姓名： | 刘琼君 林碧洲 李培培 高碧芬 陈亦琳 |
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| 作者单位： | 华侨大学材料科学与工程学院,厦门,361021 |
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| 基金项目： | 国家自然科学基金，福建省自然科学基金(批准号2014H0028)资助．? Supported by the National Natural Science Foundation of China，the Natural Science Foundation of Fujian Province of China( No．2014H0028)． |
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| 摘 要： | 采用水热-溶剂热两步法制备了BiPO_4/BiVO_4复合材料.FESEM和TEM分析结果表明,BiVO_4呈高{010},{110}暴露晶面的截角双锥状,BiPO_4纳米颗粒较均匀地附着在BiVO_4表面上,形成了异质结.光电流测试结果表明,异质结能促进光生载流子的有效转移和分离.在可见光作用下,BiPO_4/BiVO_4可有效降解罗丹明B,当BiPO_4与BiVO_4的投料摩尔比为3∶10时,样品的光催化活性最优.
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| 关 键 词： | 钒酸铋 磷酸铋 异质结 可见光催化 |
Preparation of BiPO4/BiVO4 Composites with High Visible-light Photocatalytic Activity? |
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| LIU Qiongjun,LIN Bizhou,LI Peipei,GAO Bifen,CHEN Yilin.Preparation of BiPO4/BiVO4 Composites with High Visible-light Photocatalytic Activity?[J].Chemical Research In Chinese Universities,2017,38(1). |
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| Authors: | LIU Qiongjun LIN Bizhou LI Peipei GAO Bifen CHEN Yilin |
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| Abstract: | BiPO4/BiVO4 composites were prepared by combining hydrothermal and solvothermal synthetic methods. Field emission scanning electron microscopy( FESEM) and transmission electron microscopy( TEM) revealed that the as-prepared BiVO4 exhibited a truncated bipyramid morphology with high {010}, {110}exposed facets, and that the as-obtained BiPO4 nanoparticles were grown on the surface of BiVO4, leading to the formation of the BiPO4/BiVO4 heterojunction. The transient photocurrent-time behaviors indicated that the formed heterojunction made the transfer and separation of the photo-generated carriers more efficient. The as-synthesized BiPO4/BiVO4 composites exhibited high photocatalytic activities in the degradation of rhoda-mine B under visible-light irradiation. It was found that the sample prepared with a BiPO4/BiVO4 molar ratio of 3∶10 in the reactants showed the best performance. |
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| Keywords: | BiVO4 BiPO4 Heterojunction Visible-light photocatalysis |
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