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Enhancement of visible-light-driven photoresponse of Mn-doped SnO2 quantum dots obtained by rapid and energy efficient synthesis

Author(s)
Babu, B.Kadam, A. N.Rao, G. ThirumalaLee, Sang-WhaByon, ChanShim, Jaesool
Issued Date
2018-03
DOI
10.1016/j.jlumin.2017.11.040
URI
https://scholarworks.unist.ac.kr/handle/201301/23212
Fulltext
http://www.sciencedirect.com/science/article/pii/S0022231317309729?via%3Dihub
Citation
JOURNAL OF LUMINESCENCE, v.195, pp.283 - 289
Abstract
Mn-doped SnO2 quantum dots (QDs) with different Mn concentrations were prepared by solution combustion synthesis. The crystallite size was under 5 nm was confirmed from XRD and HR-TEM. A considerable decrease in band gap energy was observed with the increase in Mn content. The PL spectra show orange emission at about 590 nm due to the ultra-small crystallite size and crystal defects of SnO2 QDs. The photocatalytic degradation of MO dye was measured under visible light irradiation using the Mn-doped SnO2 QDs as catalysts. 3 mol% Mn-doped SnO2 QDs showed the 17 times higher photocatalytic performance than SnO2 QDs within 240 min.
Publisher
ELSEVIER SCIENCE BV
ISSN
0022-2313
Keyword (Author)
Mn-doped SnO2Quantum dotsSolution combustion synthesisVisible photocatalysis
Keyword
LITHIUM-ION BATTERIESSOL-GEL METHODPHOTOCATALYTIC ACTIVITYTHIN-FILMSMAGNETIC-PROPERTIESCOMBUSTION SYNTHESISOPTICAL-PROPERTIESOXIDATION-STATETIN DIOXIDENANOPARTICLES

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