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Metal/TiO2 hierarchical nanocomposite arrays for the remarkable enhancement of photocatalytic activity

机译：金属/ TiO 2 分层纳米复合材料阵列显着增强光催化活性

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Metal/TiO2 hierarchical nanocomposite arrays were assembled by the deposition of aggregated TiO2 nanoparticles on anodic aluminum oxide templates and the subsequent loading of metal nanoparticles by electrochemical deposition. The as-prepared samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy and ultraviolet-visible spectroscopy. The photocatalytic activities of the as-synthesized catalysts were evaluated for the degradation of organic dyes. Our experimental results demonstrated that the greatly improved photocatalytic efficiency of the metal/TiO2 hierarchical nanocomposite arrays resulted from their high surface area and symmetrical arrangement. As a prospective approach for wastewater purification, our work not only enriches the synthetic methodology for TiO2, but also provides valuable knowledge about nanosized photocatalysts.
机译：通过在阳极氧化铝模板上沉积聚集的TiO 2 纳米颗粒，组装了金属/ TiO 2 分层纳米复合材料阵列。以及随后通过电化学沉积负载金属纳米颗粒。所制备的样品通过X射线衍射，扫描电子显微镜，透射电子显微镜，能量色散X射线光谱和紫外可见光谱进行表征。评价了合成催化剂的光催化活性，以评估有机染料的降解情况。我们的实验结果表明，金属/ TiO 2 分层纳米复合阵列的光催化效率大大提高是由于它们的高表面积和对称排列。作为废水净化的一种前瞻性方法，我们的工作不仅丰富了TiO 2 的合成方法，而且还提供了有关纳米级光催化剂的有价值的知识。

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