A series of CuO-K2Mo4013 composite materials have been prepared by mixing appropriates quantities, in solid state, of CuO and pure K2Mo4013 according to the molar ratios CuO/K2Mo4013 = 0.05, 0.1, 0.2, 0.5, and 1. The ...A series of CuO-K2Mo4013 composite materials have been prepared by mixing appropriates quantities, in solid state, of CuO and pure K2Mo4013 according to the molar ratios CuO/K2Mo4013 = 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-KeMo4013 systems has significantly changed by increasing the molar ratio CuO/ K2Mo4013 where new phases, identified as K2Mo3Olo 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 K2M04OI3 and CuO-K2Mo4013 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.展开更多
基金supported by the Syrian Atomic Energy Commission
文摘A series of CuO-K2Mo4013 composite materials have been prepared by mixing appropriates quantities, in solid state, of CuO and pure K2Mo4013 according to the molar ratios CuO/K2Mo4013 = 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-KeMo4013 systems has significantly changed by increasing the molar ratio CuO/ K2Mo4013 where new phases, identified as K2Mo3Olo 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 K2M04OI3 and CuO-K2Mo4013 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.
