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首页> 外文期刊>RSC Advances >Au nanoparticle homogeneously decorated C@TiO2 for enhanced visible-light-driven photocatalytic activity
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Au nanoparticle homogeneously decorated C@TiO2 for enhanced visible-light-driven photocatalytic activity

机译：金纳米粒子均匀装饰的C @ TiO2可增强可见光驱动的光催化活性

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Highly efficient visible-light-driven photocatalysts i.e. Au-C@TiO2 have been prepared by a facile and reproducible impregnation-precipitation process. The structure and properties of the photocatalysts were characterized by HRTEM, EDS elemental mapping, XPS, UV-vis and PL techniques. It is found that 6 nm-sized Au nanoparticles are homogeneously decorated within amorphous C@TiO2. The amorphous carbon shell has been demonstrated to be able to extend the photoresponse range of C@TiO2. The plasmonic Au nanoparticles loaded within C@TiO2 greatly improve visible light absorption, charge separation efficiency and transfer of photogenerated electrons and holes. As a result, in the degradation experiments of RhB and 1-NP, the visible-light photocatalytic activity of Au-decorated C@TiO2 can be greatly enhanced by Au nanoparticles and a carbon shell. We envision that such a high efficiency Au-C@TiO2 photocatalyst prepared via a facile impregnation-precipitation method may be a promising candidate for organic pollutant degradation.
机译：高效可见光驱动的光催化剂，即Au-C @ TiO2，是通过一种简便且可重现的浸渍-沉淀方法制备的。通过HRTEM，EDS元素图谱，XPS，UV-vis和PL技术对光催化剂的结构和性能进行了表征。发现在无定形的C @ TiO2中均匀地装饰了6nm尺寸的Au纳米颗粒。非晶碳壳已被证明能够扩展C @ TiO2的光响应范围。负载在C @ TiO2中的等离子Au纳米粒子大大提高了可见光吸收，电荷分离效率以及光生电子和空穴的转移。结果，在RhB和1-NP的降解实验中，Au纳米颗粒和碳壳可以大大提高Au修饰的C @ TiO2的可见光催化活性。我们设想通过一种简便的浸渍-沉淀法制备的这种高效Au-C @ TiO2光催化剂可能是有机污染物降解的有希望的候选者。

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