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- W2677341673 abstract "Abstract Chromium (Cr)-doped SnO2 quantum dots (QDs) with various doping concentration have been successfully synthesized using a simple combustion method. The QDs have been characterized by using various techniques. The X-ray diffraction patterns revealed that the prepared QDs have monophasic tetragonal rutile-type crystallite structure with an average crystallite size of ∼3 nm. The optical band gap energies of QDs increased with increasing the Cr ion concentration. The XPS spectra reveal the presence of Sn4+, Cr3+, and O respectively. Cr (0.03 mol%)-doped SnO2 QDs are exhibited the greater photocatalytic activity compared with other photocatalysts, which is attributed mainly due to quantum confinement effect and an increase in specific surface area. The existence of a Cr3+ as shown from XPS spectra, act as an electron acceptor and/or hole donor, which enhancing longer survived charge carrier separation in Cr-doped SnO2 QDs as confirmed by PL spectroscopy." @default.
- W2677341673 created "2017-06-30" @default.
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- W2677341673 date "2017-09-01" @default.
- W2677341673 modified "2023-10-14" @default.
- W2677341673 title "Synthesis of Cr-doped SnO2 quantum dots and its enhanced photocatalytic activity" @default.
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- W2677341673 doi "https://doi.org/10.1016/j.mseb.2017.06.007" @default.
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