Effect of hydrothermal reaction temperature on the photocatalytic properties of CdWO4-RGO nanocomposites

IF 1.4 Q4 NANOSCIENCE & NANOTECHNOLOGY Journal of Nanostructures Pub Date : 2019-10-01 DOI:10.22052/JNS.2019.04.001

M. T. T. Moghadam, M. Babamoradi, R. Azimirad

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引用次数: 6

Abstract

Cadmium tungstate (CdWO4) nanorods and CdWO4-reduced graphene oxide (RGO) nanocomposites have been prepared by the hydrothermal method at 140, 160 and 180 oC reaction temperatures. The synthesized samples were characterized by X-ray powder diffraction, scanning electron microscopy (SEM), Fourier transform infrared, photoluminescence spectroscopy and Raman spectroscopy. SEM image showed the pure sample consist of nanorods with 50-100 nm diameter and ~1 µm length. The images of the nanocomposite samples clearly showed existence of CdWO4 nanorods and graphene sheets together. The photocatalytic activities of the as-prepared samples were investigated by degradation of methylene blue under the visible light irradiation. An enhancement in photocatalytic activity was observed with CdWO4-RGO nanocomposites in compare with the pure CdWO4. The effect of reaction temperature on the photocatalytic activity of the prepared nanocomposites was also investigated. The results showed that the CdWO4-RGO sample which prepared at 160 oC has more catalytic activity than the other samples.

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水热反应温度对CdWO4-RGO纳米复合材料光催化性能的影响

在140、160和180℃的反应温度下，采用水热法制备了钨酸镉(CdWO4)纳米棒和CdWO4还原氧化石墨烯纳米复合材料。采用x射线粉末衍射、扫描电镜(SEM)、傅里叶变换红外光谱、光致发光光谱和拉曼光谱对合成的样品进行了表征。扫描电镜显示，纯样品由直径为50 ~ 100 nm、长度为~1 μ m的纳米棒组成。纳米复合材料样品的图像清楚地显示了CdWO4纳米棒和石墨烯片的存在。通过可见光下对亚甲基蓝的降解，考察了所制备样品的光催化活性。与纯CdWO4相比，CdWO4- rgo纳米复合材料的光催化活性增强。研究了反应温度对所制备纳米复合材料光催化活性的影响。结果表明，在160℃下制备的CdWO4-RGO样品比其他样品具有更高的催化活性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Nanostructures NANOSCIENCE & NANOTECHNOLOGY-

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

7 weeks

期刊介绍： Journal of Nanostructures is a medium for global academics to exchange and disseminate their knowledge as well as the latest discoveries and advances in the science and engineering of nanostructured materials. Topics covered in the journal include, but are not limited to the following: Nanosystems for solar cell, energy, catalytic and environmental applications Quantum dots, nanocrystalline materials, nanoparticles, nanocomposites Characterization of nanostructures and size dependent properties Fullerenes, carbon nanotubes and graphene Self-assembly and molecular organization Super hydrophobic surface and material Synthesis of nanostructured materials Nanobiotechnology and nanomedicine Functionalization of nanostructures Nanomagnetics Nanosensors.