Solgel-hydrothermal synthesis of Tb/Tourmaline/TiO2 nano tubes and enhanced photocatalytic activity
Abstract In this study, we synthesized Tb/Tourmaline/TiO 2 nano tubes (NTs) through a solgel-hydrothermal method. The as-prepared samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectromicroscope, scanning electron microscopy, transmission electron microscopy and UV-vis diffuse reflectance spectroscopy. The resulting Tb/Tourmaline/TiO 2 NTs exhibited higher photocatalytic activity than pure TiO 2 and TiO 2 nano particles (NPs) in the degradation of menthyl orange under UV-light. Results revealed that doping rare earth element Tb could narrow the wide band gap of TiO 2 and tourmaline could trap the photogenerated electron of TiO 2 to inhibit the recombination of photogenerated electron-hole pairs. Highlights Nano tube structure obtained by a simple solgel- hydrothermal method. TiO 2 photocatalytic activity had a remarkably improved. Tourmaline played a key role in the enhancement of photocatalytic activity. Graphical abstract [DISPLAY OMISSION]
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- DOI : http://dx.doi.org/10.1016/j.solidstatesciences.2016.12.013
- Elsevier : 저널> 권호 > 논문
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