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首页> 外文期刊>CERAMICS INTERNATIONAL >Thickness dependent optical, structural, morphological, photocatalytic and catalytic properties of radio frequency magnetron sputtered nanostructured Cu2O-CuO thin films
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Thickness dependent optical, structural, morphological, photocatalytic and catalytic properties of radio frequency magnetron sputtered nanostructured Cu2O-CuO thin films

机译：厚度依赖性光学，结构，形态学，光催化和射频磁控管溅射纳米结构Cu2O-CuO薄膜的催化性能

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摘要

Nanostructured thin films of Cu2O-CuO with improved photocatalytic and catalytic activities were developed by RF magnetron sputtering. Thickness-dependent optical, structural, morphological, photocatalytic and catalytic performance of the Cu2O-CuO films were investigated using field emission scanning electron microscopy (FESEM), XRD, AFM, RBS, UV-Vis absorption, PL and X-ray photoelectron spectroscopy. FESEM analyses showed nanoparticles which increased in size from 7 to 13 nm with increase in sputter deposition time and were confirmed to be of Cu2O-CuO from Raman and XPS studies. Increase in thickness of Cu2O-CuO thin film from 7 to 50 nm led to increase in surface roughness, decrease in band gap and reduction in PL intensity. Cu2O-CuO thin films showed thickness-dependent enhanced photocatalytic and catalytic activities towards degradation of methylene blue, methyl orange and 4-nitrophenol from water. The enhanced light utilization capability, suppressed charge recombination and small crystallite size of the developed nanostructured Cu2O-CuO thin films are the key factors responsible for their enhanced photocatalytic and catalytic performance.
机译：通过RF磁控溅射开发了具有改善的光催化和催化活性的Cu2O-CuO的纳米结构薄膜。使用现场发射扫描电子显微镜（FESEM），XRD，AFM，RB，UV-Vis吸收，PL和X射线光电子谱研究，研究了Cu2O-CuO膜的厚度依赖性光学，结构，形态学，光催化和催化性能。 FeSEM分析显示纳米颗粒，其大小从7-13nm增加，随着溅射沉积时间的增加，并确认来自拉曼和XPS研究的Cu2O-CuO。 Cu2O-CuO薄膜的厚度从7至50nm的厚度的增加导致表面粗糙度的增加，带隙的带隙减小和PL强度的降低。 Cu2O-CuO薄膜显示厚度依赖性增强的光催化和催化活性，从水中降解亚甲基蓝，甲基橙和4-硝基苯酚。增强的光利用能力，抑制电荷重组和发育的纳米Cu2O- CuO薄膜的小微晶尺寸是负责其增强的光催化和催化性能的关键因素。

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