Fabrication of Flower-like Sn3O4 Hollow Microspheres and Their Photocatalytic Activity

doi:10.15541/jim20150452

Abstract

Abstract:

Flower-like Sn₃O₄ hollow microspheres were synthesized via one-step hydrothermal process with varying reaction temperature (120℃, 135℃ and 150℃). The crystal structure, morphology, composition, specific surface area, and optical property of the obtained products were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), transmission electron microscope(TEM), high resolution transmission electron microscope(HRTEM), automatic surface area analyzer, UV-Vis absorption spectrum, and photoluminescence spectrum (PL). The photocatalytic experiments of the as-prepared samples were evaluated by decomposing the model pollutants rhodamine B (RhB). Systematical measurements revealed that the morphology of the hollow microsphere structures was faithfully preserved as changing the hydrothermal synthesized temperature. With the increase of the hydrothermal synthesized temperature, the UV-Vis absorption peak of samples shifted from 384 nm to 365 nm and the PL intensity further weakened. Finally, the photocatalytic activity presented that Sn₃O₄microspheres hydrothermal synthesized at 120℃ had the best photcatalytic performance.

Key words: hydrothermal method, oxygen vacancy, Sn3O4, photocatalytic activity

CLC Number:

O474
O643

CUI Lei, YANG Li-Juan, WANG Fan, XIA Wei-Wei. Fabrication of Flower-like Sn₃O₄Hollow Microspheres and Their Photocatalytic Activity[J]. Journal of Inorganic Materials, 2016, 31(5): 461-465.

Figures/Tables 7

Fig. 1 XRD patterns of samples synthesized at different reaction temperatures

Fig. 2 HRTEM images of samples hydrothermal synthesized at (a) 120℃ and (b) 150℃ with insets showing the corresponding TEM images

Fig. 3 SEM images of samples hydrothermal synthesized at (a) 120℃, (b) 135℃ and (c) 150℃

Fig. 4 N2 adsorption/desorption isotherms of synthesized Sn3O4

Fig. 5 UV-Vis absorption spectra of Sn3O4 hydrothemal synthesized at different reaction temperatures

Fig. 6 PL spectra of Sn3O4 hydrothermal synthesized at different temperatures

Fig. 7 Degradation profiles of RhB with Sn3O4 hydrothermal synthesized at different temperatures

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Fabrication of Flower-like Sn₃O₄Hollow Microspheres and Their Photocatalytic Activity

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