Acta Phys. -Chim. Sin. ›› 2013, Vol. 29 ›› Issue (09): 2062-2068.doi: 10.3866/PKU.WHXB201306213


Microwave-Hydrothermal Synthesis and Photocatalytic Activity of Zn2GeO4 Nanoribbons

DU Shu-Qing, YUAN Yu-Feng, TU Wei-Xia   

  1. State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Received:2013-04-26 Revised:2013-06-18 Published:2013-08-28
  • Contact: TU Wei-Xia
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (21106006).


Zn2GeO4 nanoribbons were synthesized via a microwave-hydrothermal method. The effects of reaction factors, such as reaction temperature, amount of reactants and template, were investigated and optimized for the formation of Zn2GeO4 nanoribbons. The products were characterized by various techniques including field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS). Photocatalytic activities of the synthesized Zn2GeO4 nanostructures were evaluated for the degradation of aqueous methyl orange. Experimental results indicated that Zn2GeO4 nanoribbons can be synthesized from Zn(CH3COO)2 and GeO2 (molar ratio 2: 1) under microwave irradiation at 160℃ for 20 min. The nanoribbons have uniformsizes with widths of 100 nm and are tens of micrometers in length. Compared with conventional hydrothermal methods, Zn2GeO4 nanoribbons from microwave-hydrothermal synthesis have less native defects, lower PL spectra, 50.7% larger specific surface area, and 54.7% higher photocatalytic activity.

Key words: Microwave-hydrothermal synthesis, Zn2GeO4, Nanoribbon, Photocatalyst, Degradation of organics


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