Deposition of ZnO flowers on the surface of g-C3N4 sheets via hydrothermal process
A one pot hydrothermal process was used to grow zinc oxide (ZnO) flowers on the surface of graphitic carbon nitride (g-C3N4) for use as an efficient photocatalyst. ZnO flowers on g-C3N4 were grown by heat treating a solution of ZnO precursors with g-C3N4 particles at 140°C for 2h. The resulting comp...
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Published in | Ceramics international Vol. 41; no. 10; pp. 12923 - 12929 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.12.2015
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Subjects | |
Online Access | Get full text |
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Summary: | A one pot hydrothermal process was used to grow zinc oxide (ZnO) flowers on the surface of graphitic carbon nitride (g-C3N4) for use as an efficient photocatalyst. ZnO flowers on g-C3N4 were grown by heat treating a solution of ZnO precursors with g-C3N4 particles at 140°C for 2h. The resulting composite photocatalyst was characterized by using field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and photoluminescence (PL) spectroscopy. The resulting composites exhibited sheet like g-C3N4 decorated with flower-like ZnO microparticles. The composite particle showed much better activity for the photocatalytic degredation of methylene blue than those of g-C3N4 or ZnO alone. This enhanced photocatalytic activity of the g-C3N4/ZnO composite is attributed to the synergistic effects between g-C3N4 and ZnO, which enhance the efficiency of charge separation and reduce the recombination probability of photogenerated electron–hole pairs. The photocatalytic activity of as-synthesized particles did not change after multiple cycles, indicating that the composite was stable and could be reused. |
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ISSN: | 0272-8842 1873-3956 |
DOI: | 10.1016/j.ceramint.2015.06.134 |