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Photocatalytic performance of Cu.sub.2O-loaded TiO.sub.2/rGO nanoheterojunctions obtained by UV reduction.(Original Paper)

Dong, Kaituo ; He, Jiandong ; Liu, Junxue ; Li, Fengting ; Yu, Lianqing ; Zhang, Yaping ; Zhou, Xiaoyan

Journal of Materials Science, 2017, Vol.52(11), p.6754(13) [Tạp chí có phản biện]

ISSN: 0022-2461 ; DOI: 10.1007/s10853-017-0911-2

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  • Nhan đề:
    Photocatalytic performance of Cu.sub.2O-loaded TiO.sub.2/rGO nanoheterojunctions obtained by UV reduction.(Original Paper)
  • Tác giả: Dong, Kaituo ; He, Jiandong ; Liu, Junxue ; Li, Fengting ; Yu, Lianqing ; Zhang, Yaping ; Zhou, Xiaoyan
  • Chủ đề: Infrared Spectroscopy ; Raman Spectroscopy ; Photoluminescence ; Sulfates
  • Là 1 phần của: Journal of Materials Science, 2017, Vol.52(11), p.6754(13)
  • Mô tả: A novel dot-like Cu.sub.2O-loaded TiO.sub.2/reduced graphene oxide (rGO) nanoheterojunction was synthesized via UV light reduction for the first time. Cu.sub.2O with size of ca. 5 nm was deposited on rGO sheet and TiO.sub.2 nanosheets. The products were characterized by infrared spectroscopy, Raman spectrum, UV-Vis diffuse reflectance spectra, XPS techniques, photoluminescence spectra. The results demonstrated that Cu.sub.2O and rGO enhanced the absorption for solar light, separation efficiency of electron-hole pairs, charge shuttle and transfer, and eventually improved photoelectrochemical and photocatalytic performance for contaminants degradation. The reaction time and anion precursor could affect the final copper-containing phase. As extending UV irradiation time, Cu.sup.2+ was be first reduced to Cu.sub.2O and then transformed to metal Cu. In comparison with CH.sub.3COO.sup.- (copper acetate), NO.sub.3.sup.- (copper nitrate) and Cl.sup.- (copper chloride), SO.sub.4.sup.2- (copper sulfate) was the optimum for synthesizing pure Cu.sub.2O phase.
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0022-2461 ; DOI: 10.1007/s10853-017-0911-2

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