Acta Metallurgica Sinica (English Letters) >
Phase Characterizations and Photocatalytic Applications of CuO–K2Mo4O13 Composites
Received date: 2013-06-03
Revised date: 2013-08-07
Online published: 2014-03-11
A series of CuO–K2Mo4O13 composite materials have been prepared by mixing appropriates quantities, in solid state, of CuO and pure K2Mo4O13 according to the molar ratios CuO/K2Mo4O13 = 0.05, 0.1, 0.2, 0.5, and 1. The prepared samples were characterized using techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), differential thermal analysis (DTA), nitrogen adsorption measurements, and UV spectroscopy. According to XRD results, the phase composition of the CuO–K2Mo4O13 systems has significantly changed by increasing the molar ratio CuO/K2Mo4O13 where new phases, identified as K2Mo3O10 and CuMoO4, have been detected. The formation of these new phases has been tracked through FT-IR and DTA measurements. The nitrogen adsorption–desorption measurements also reveal a change in the pore type of the studied materials due to the presence of these new phases. The photocatalytic activities of K2Mo4O13 and CuO–K2Mo4O13 composites were studied by means of monitoring the ability of these materials to the degradation, under UV irradiation, of methyl red in liquid media. It was found that the phase composition of the used samples significantly controls their photocatalytic activities.
Key words： Potassium tetramolybdate; Copper oxide; Composite; Photocatalyst
M. Kassem . Phase Characterizations and Photocatalytic Applications of CuO–K2Mo4O13 Composites[J]. Acta Metallurgica Sinica (English Letters), 2014 , 27(1) : 180 -184 . DOI: 10.1007/s40195-014-0030-x
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