期刊
CATALYSIS SCIENCE & TECHNOLOGY
卷 3, 期 7, 页码 1805-1809出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cy00013c
关键词
-
资金
- Excellent Doctoral Student granted by the Ministry of Education [MXRZZ2012006]
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 andelectrochemical 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.
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