Self-assembled ionic liquid synthesis of nitrogen-doped mesoporous TiO2 for visible-light-responsive hydrogen production

Shou Heng Liu, Wen Ting Tang, Wei Xing Lin

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)24006-24013
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume42
Issue number38
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

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