Journal
CHEMCATCHEM
Volume 11, Issue 24, Pages 6408-6416Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201901703
Keywords
Boron; carbon nitride; hydrogen; photocatalysis; photoreforming; TiO2
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Funding
- French National Research Agency (ANR) under the Program Make Our Planet Great Again [ANR-18-MOPGA-0014]
- MIUR [PRIN2017, 2017PBXPN4]
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Boron-doped anatase TiO2 particles were effectively coupled with carbon nitride (CN) forming nanocomposites. The materials were fully characterized by DR-UV-Vis, N-2 adsorption-desorption isotherms, XRD, Raman, FTIR, TGA, XPS, TEM, electron energy loss spectroscopy, photoluminescence, and electron paramagnetic spectroscopy (EPR) spectroscopy. The developed heterojunctions were applied as photocatalysts for hydrogen (H-2) evolution by the photoreforming process of ethanol under solar irradiation, using minimal amount of Pt nanoparticles (0.1 wt. %) as co-catalyst. The effects of boron addition and CN content were evaluated and optimized nanocomposite presented 85 % increase in H-2 evolution compared with the pure anatase TiO2 catalyst. The observed higher H-2 evolution rates were ascribed to improvements in charge formation and separation efficiency due to the B-dopant and the presence of CN.
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