Journal
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
Volume 72, Issue 4, Pages 393-402Publisher
SERBIAN CHEMICAL SOC
DOI: 10.2298/JSC0704393L
Keywords
photocatalysis; titanium dioxide; doping; alkaline-earth metal; activity
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TiO2 photocatalysts doped with alkaline-earth metal ions were prepared by the impregnation and coprecipitation methods. The sample were characterized by XRD, XPS and IR spectroscopy. Their activities were evaluated by the photocatalytic production of hydrogen. The activities of the doped photocatalysts dopended on the size of the dopant ions and the doping method. The optimum molar contents of dopant ions Be2+, Mg2+, Ca2+, Sr2+, Ba2+ were 1.25, 1.25, 2.25, 2.25 and 2.25 at. %, respectively. The optimum calcination temperature and time were 400 degrees C and 1 h.
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