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Issue 7, 2013
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Visible light photocatalytic degradation of methylene blue by SnO2 quantum dots prepared via microwave-assisted method

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Abstract

SnO2 quantum dots (QDs) were successfully synthesized via a microwave-assisted reaction of a SnO2 precursor in an aqueous solution using a microwave system. The morphology, structure and photocatalytic performance in the degradation of methylene blue (MB) were characterized by scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, UV-vis absorption/reflectance spectroscopy and electrochemical impedance spectroscopy, respectively. The results show that the SnO2 QDs synthesized at a pH value of 5 exhibit an optimal photocatalytic performance with a MB degradation rate of 90% at 240 min under visible light irradiation due to their easier adsorption of pollutants, higher visible light absorption and lower electron–hole pair recombination.

Graphical abstract: Visible light photocatalytic degradation of methylene blue by SnO2 quantum dots prepared via microwave-assisted method

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Publication details

The article was received on 07 Jan 2013, accepted on 26 Mar 2013 and first published on 26 Mar 2013


Article type: Paper
DOI: 10.1039/C3CY00013C
Citation: Catal. Sci. Technol., 2013,3, 1805-1809
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    Visible light photocatalytic degradation of methylene blue by SnO2 quantum dots prepared via microwave-assisted method

    X. Liu, L. Pan, T. Chen, J. Li, K. Yu, Z. Sun and C. Sun, Catal. Sci. Technol., 2013, 3, 1805
    DOI: 10.1039/C3CY00013C

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