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首页> 外文期刊>RSC Advances >Controllable fabrication of nanostructured copper compound on a Cu substrate by a one-step route
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Controllable fabrication of nanostructured copper compound on a Cu substrate by a one-step route

机译：通过一步法可控地在铜基板上制备纳米结构的铜化合物

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We report a one-step corrosion process to synthesize nanostructured CuO thin films at room temperature. The reaction time has great effect on the composition and microstructure of products to control the size and shape of the copper compound. X-ray diffraction studies showed the transformation of nanograins from Cu(OH)(2) nanowires to flower-like CuO and to dispersed CuO nanosheets. The optical properties of CuO nanosheets were investigated by using UV-vis spectroscopy with considerable blue-shift in the optical band gap (E-g = 1.8 eV) due to the quantum confinement effect. Additionally, the photocatalytic activities of as-prepared copper compound films were determined by measuring the degradation of methyl blue (MB) to find out their potential application in waste water treatment. The photoluminescence (PL) spectrum showed both UV as well as visible emission peaks, indicating their good optical properties. Moreover, a reasonable growth mechanism for the formation of the CuO nanostructure is proposed by means of a scanning electron microscope (FESEM).
机译：我们报告了一步腐蚀过程，以在室温下合成纳米结构的CuO薄膜。反应时间对产物的组成和微观结构有很大影响，以控制铜化合物的大小和形状。 X射线衍射研究表明，纳米颗粒从Cu（OH）（2）纳米线转变为花状CuO和分散的CuO纳米片。通过使用紫外可见分光光度法研究了CuO纳米片的光学性能，由于量子限制效应，该光学带隙中的蓝移相当大（E-g = 1.8 eV）。另外，通过测量甲基蓝（MB）的降解来确定所制备的铜化合物膜的光催化活性，以发现其在废水处理中的潜在应用。光致发光（PL）光谱既显示UV峰，又显示可见光发射峰，表明它们具有良好的光学性能。此外，通过扫描电子显微镜（FESEM）提出了形成CuO纳米结构的合理生长机理。

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