Enhanced Visible Light Driven Photocatalytic Behavior of BiFeO₃/Reduced Graphene Oxide Composites.
Enhanced Visible Light Driven Photocatalytic Behavior of BiFeO₃/Reduced Graphene Oxide Composites.
复制标题
BiFeO3/还原氧化石墨烯复合材料的增强可见光驱动光催化性能
DOI：
10.3390/nano8070526
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发表时间：
2018-07-13
期刊：
影响因子：
--
通讯作者：
Li YY
中科院分区：
文献类型：
--
作者：
Si YH;Xia Y;Shang SK;Xiong XB;Zeng XR;Zhou J;Li YY
采用简单的水热法制备了BiFeO 3/还原氧化石墨烯（BFO/RGO）复合材料。X射线衍射（XRD）、扫描电子显微镜（SEM）、拉曼光谱（Raman）和X射线光电子能谱（XPS）分析表明，氧化石墨烯在水热过程中被还原，成功合成了BFO/RGO复合材料。紫外-可见吸收和光致发光特性表明，引入RGO可以有效地减少光生电子和空穴对的复合。结果表明，BiFeO 3氧化石墨烯（BGO）复合材料在可见光照射下对亚甲基蓝（MB）溶液的光催化降解性能较纯BFO有所提高，复合材料中氧化石墨烯（GO）的最佳用量为60 mg（BGO 60）。其优异的光催化性能主要归因于光吸收的改善、活性中心的增加以及电子空穴对的低复合率。这项工作可以为设计用于废水处理和环境保护的先进光催化剂提供更多的见解。
BiFeO3/Reduced Graphene Oxide (BFO/RGO) composites have been fabricated by a simple hydrothermal method. The X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman, and X-ray photoelectron spectroscopy (XPS) analysis reveal that graphene oxide was reduced in hydrothermal process and BFO/RGO composites were successfully synthesized. UV-visible absorption and photoluminescence properties show that the introduction of RGO can effectively reduce the recombination of photogenerated electron and hole pairs. Compared to the pristine BFO, the photocatalytic performance of BiFeO3 Graphene Oxide (BGO) composites is enhanced for the degradation of Methylene blue (MB) solution under visible light irradiation, and the result shows that the optimal amount of Graphene Oxide (GO) in the composites is 60 mg (BGO60). The excellent photocatalytic performance is mainly ascribed to improved light absorption, increased reactive sites, and the low recombination rate of electron-hole pairs. This work can provide more insights into designing advanced photocatalysts for wastewater treatment and environmental protection.
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