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首页> 外文期刊>Journal of Ceramic Processing Research. (Text in English) >Sonochemical synthesis, characterization and evaluation of photocatalytic activities of Ag/BiFeO3 photocatalysts
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Sonochemical synthesis, characterization and evaluation of photocatalytic activities of Ag/BiFeO3 photocatalysts

机译：Ag / BiFeO3光催化剂的声化学合成，表征及光催化活性评估

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摘要

Being a visible-light responsive semiconductor, BiFeO3 (BFO) is considered as a potential material for photocatalysis. To enhance the photocatalytic efficiency, in this work, BiFeO3 was dispersed with various amount of Ag. Morphologies and phases of the as-synthesized samples were evaluated by using scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. UV-Vis diffuse reflectance spectroscopy (DRS) was used to analyse the absorption properties. The photocatalytic activities of the products were evaluated via the photocatalytic degradation of aqueous rhodamine-B (RhB) solution under simulated solar-light irradiation. The results indicated the important role of Ag nanoparticles on improving catalytic efficiency of BiFeO3. The enhancement in the photocatalytic activity is explained on the basis of surface plasmon resonance effect of the dispersed Ag nanoparticles over the surface of BiFeO3.
机译：作为对可见光敏感的半导体，BiFeO3（BFO）被认为是光催化的潜在材料。为了提高光催化效率，在这项工作中，BiFeO3分散在各种数量的Ag中。通过使用扫描电子显微镜（SEM）和X射线衍射（XRD）分别评估了合成样品的形貌和相。紫外-可见漫反射光谱法（DRS）用于分析吸收性能。通过在模拟太阳光照射下若丹明-B（RhB）水溶液的光催化降解来评估产物的光催化活性。结果表明，Ag纳米颗粒在提高BiFeO3的催化效率中具有重要作用。基于BiFeO3表面上分散的Ag纳米颗粒的表面等离子体共振效应，解释了光催化活性的增强。

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