Journal
CATALYSIS TODAY
Volume 225, Issue -, Pages 64-73Publisher
ELSEVIER
DOI: 10.1016/j.cattod.2013.10.086
Keywords
Titanium dioxide; CdS; Amorphous; Composite; Photocatalyst
Funding
- College of Arts and Sciences, University of Missouri - Kansas City
- University of Missouri Research Board
- National Science Foundation of China [20906034]
- National Scholarship Fund of China Scholarship Council [2011844194]
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In this paper, a series of nanostructured TiO2-CdS composite photocatalysts have been synthesized using an aqueous solution route at room temperature, and characterized with X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM), UV-VIS absorption and Fourier transform infrared spectroscopy (FTIR). Their photocatalytic activities have been investigated on the degradation of methylene blue under simulated solar light irradiation. CdS shows the highest activity when the ratio of the starting materials Na2S to Cd(NO3)(2) is close to 1.0, TiO2 shows the best activity when prepared under pH = 13.0, and the CdS/TiO2 composite with the molar ratio of TiO2 to CdS of 50 displays the highest activity. (C) 2013 Elsevier B.V. All rights reserved.
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