Facile synthesis of uniform hierarchical composites CuO-CeO₂ for enhanced dye removal

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• 作者：Pan Xu ; Helin Niu ; Jingshuai Chen ; Jiming Song…
• 关键词：CuO ; CeO2 ; Hierarchical composites ; Methyl blue ; Congo red ; Adsorption ; Nanoflakes
• 刊名：Journal of Nanoparticle Research
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：18
• 期：12
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Nanotechnology; Inorganic Chemistry; Characterization and Evaluation of Materials; Physical Chemistry; Optics, Lasers, Photonics, Optical Devices;
• 出版者：Springer Netherlands
• ISSN：1572-896X
• 卷排序：18

文摘

The hierarchically shaped CuO-CeO₂ composites were prepared through a facile solvothermal method without using any template. The as-prepared products were characterized by X-ray powder diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and N₂ adsorption–desorption analysis. In the characterization, we found that CuO-CeO₂ composites were showed uniform size and morphology which were consisted of the secondary nanoflakes interconnected with each other. Most interestingly, the composites showed efficient performance to remove methyl blue and Congo red dyes from water with maximum adsorption capacities of 2131.24 and 1072.09 mg g−1, respectively. In addition, because of their larger surface area and the unique hierarchical structures, the adsorption performance of the CuO-CeO₂ composites is much better than the materials of CuO and CeO₂.