Abstract
g-C3N4/Ta2O5 composites have been synthesized by a facile route in which mixtures of Ta2O5 and urea are heated at various temperatures of 450°C, 500°C, and 550°C. The obtained materials (denoted as CN/TaO-T, where T is the heating temperature) were characterized using x-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, diffuse-reflectance ultraviolet–visible (UV–Vis) spectroscopy, thermogravimetric analysis, and x-ray photoelectron spectroscopy. The results show that the as-prepared composites are in orthorhombic Ta2O5 phase coated by g-C3N4. The photocatalytic activity of the composites was evaluated by photodegradation of methylene blue under visible light. Among the three materials, CN/TaO-500 exhibited the highest photocatalytic activity. The improved photocatalytic activity of the g-C3N4/Ta2O5 composites is attributed to the presence of g-C3N4 in the materials.
Original language | English |
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Pages (from-to) | 2334-2340 |
Number of pages | 7 |
Journal | Journal of Electronic Materials |
Volume | 45 |
Issue number | 5 |
DOIs | |
State | Published - 1 May 2016 |
Bibliographical note
Funding Information:This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korea government (MSIP) (NRF-2015R1A2A2A01004275).
Publisher Copyright:
© 2015, The Minerals, Metals & Materials Society.
Keywords
- g-CN
- methylene blue
- photocatalyst
- TaO
- urea