TY - JOUR
T1 - Self-assembled ionic liquid synthesis of nitrogen-doped mesoporous TiO2 for visible-light-responsive hydrogen production
AU - Liu, Shou Heng
AU - Tang, Wen Ting
AU - Lin, Wei Xing
N1 - Funding Information:
The authors would like to gratefully acknowledge the funding supports of this research from the Ministry of Science and Technology of Taiwan (Contract No.: MOST 105-2221-E-006-015-MY5 ).
Publisher Copyright:
© 2017 Hydrogen Energy Publications LLC
PY - 2017
Y1 - 2017
N2 - Nitrogen-doped mesoporous TiO2 has been synthesized by a simple solvent evaporation-induced self-assembly method using a nitrogen-containing ionic liquid concurrently as a nitrogen source and mesoporous template. After being evaporated and subsequently calcined at various temperatures (300–900 °C), the synthesized samples were thoroughly characterized by X-ray diffraction (XRD), Raman, small-angle X-ray scattering patterns (SAXS), N2 adsorption-desorption isotherms, X-ray photoelectron (XPS) and UV–Vis diffuse reflectance (UV–Vis DR) spectroscopies. The obtained results suggest that the calcination temperature greatly influences the crystallization of TiO2, formation of mesoporous structure, specific surface area and N-doping amounts. Among the fabricated photocatalysts, the samples calcined at 600 °C exhibit superior photocatalytic performance for hydrogen production in water/methanol solution under visible light illumination if compared to other synthesized samples and commercial TiO2 (Degussa P25). The finding is possibly due to the synergy of more N-doping amounts on the well-defined mesoporous TiO2 with highly anatase crystal phase and moderate surface area in the catalysts.
AB - Nitrogen-doped mesoporous TiO2 has been synthesized by a simple solvent evaporation-induced self-assembly method using a nitrogen-containing ionic liquid concurrently as a nitrogen source and mesoporous template. After being evaporated and subsequently calcined at various temperatures (300–900 °C), the synthesized samples were thoroughly characterized by X-ray diffraction (XRD), Raman, small-angle X-ray scattering patterns (SAXS), N2 adsorption-desorption isotherms, X-ray photoelectron (XPS) and UV–Vis diffuse reflectance (UV–Vis DR) spectroscopies. The obtained results suggest that the calcination temperature greatly influences the crystallization of TiO2, formation of mesoporous structure, specific surface area and N-doping amounts. Among the fabricated photocatalysts, the samples calcined at 600 °C exhibit superior photocatalytic performance for hydrogen production in water/methanol solution under visible light illumination if compared to other synthesized samples and commercial TiO2 (Degussa P25). The finding is possibly due to the synergy of more N-doping amounts on the well-defined mesoporous TiO2 with highly anatase crystal phase and moderate surface area in the catalysts.
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U2 - 10.1016/j.ijhydene.2017.08.009
DO - 10.1016/j.ijhydene.2017.08.009
M3 - Article
AN - SCOPUS:85028046222
SN - 0360-3199
VL - 42
SP - 24006
EP - 24013
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 38
ER -