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BiVO4/MIL-101 composite having the synergistically enhanced visible light photocatalytic activity

机译：具有协同增强的可见光光催化活性的BiVO4 / MIL-101复合材料

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In this study, a novel composite containing a Cr based metal-organic framework (MOF), MIL-101 and BiVO4 was successfully synthesized by hydrothermal method, and was fully characterized by X-ray diffraction, transmission electron microscopy, thermogravimetric analysis, UV-vis diffuse reflectance absorption spectra and photoluminescence emission spectra. Moreover, the photocatalytic activities of BiVO4/MIL101 composite and the pure materials were evaluated by measuring the degradation of Rhodamine B under visible light. The results show that the composite exhibits better photocatalytic activities than pure materials, which can be ascribed to the big adsorption capacity of MIL-101 and the enhanced separation of photogenerated charge carriers from assembly of MIL-101 on BiVO4. The synergistic effect between BiVO4 and MIL-101 was evaluated by the proposed synergistic factor, which is bigger than 1 for various ratios of BiVO4 to MIL-101, suggesting there exists positive interactions between pure materials for enhancing photocatalytic activities.
机译：在这项研究中，通过水热法成功合成了一种含Cr基金属有机骨架（MOF），MIL-101和BiVO4的新型复合材料，并通过X射线衍射，透射电子显微镜，热重分析，UV-可见漫反射吸收光谱和光致发光发射光谱。此外，通过测量可见光下若丹明B的降解，评估了BiVO4 / MIL101复合材料和纯材料的光催化活性。结果表明，该复合材料比纯材料具有更好的光催化活性，这可以归因于MIL-101的大吸附能力和增强的MIL-101在BiVO4上组装产生的光生载流子的分离能力。 BiVO4和MIL-101之间的协同作用通过拟议的协同因子进行了评估，对于BiVO4与MIL-101的各种比率，该协同因子均大于1，表明纯材料之间存在正相互作用以增强光催化活性。

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