Photoassisted degradation of rhodamine B by nanoparticles of α-Bi2Mo3O12 prepared by an amorphous complex precursor
Nanoparticles of alpha-Bi2Mo3O12 have been synthesized by a method that involves an amorphous complex precursor. The phase formation process, crystal structure and morphology of the synthesized samples were followed by TGA/DTA, XRD, TEM and SEM techniques. The effect of temperature of calcination on...
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Published in | Materials chemistry and physics Vol. 112; no. 2; pp. 679 - 685 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
01.12.2008
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Online Access | Get full text |
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Summary: | Nanoparticles of alpha-Bi2Mo3O12 have been synthesized by a method that involves an amorphous complex precursor. The phase formation process, crystal structure and morphology of the synthesized samples were followed by TGA/DTA, XRD, TEM and SEM techniques. The effect of temperature of calcination on the surface area and optical properties of alpha-Bi2Mo3O12 nanoparticles has been also investigated. The photocatalytical activity of alpha-Bi2Mo3O12 nanoparticles was evaluated in the degradation of rhodamine B molecules in aqueous solution under visible light irradiation. The best photocatalyst was selected by evaluating the photocatalytic properties of samples with different calcination temperatures. The kinetic degradation of rhodamine B was adjusted with a first-order reaction with an apparent rate constant k' = 1.36 X 10-2 min-1 and t1/2 = 51 min for the best material obtained. The mineralization degree of the dye to CO2 and H2O was around 56% after 100 h of irradiation. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0254-0584 |
DOI: | 10.1016/j.matchemphys.2008.06.035 |