Abstract
In the present work, we demonstrate the synthesis of a novel nanosized TiO2 with the potential photocatalytic applications. Firstly, the hexagonal prisms were synthesized by dealloying TiCu amorphous alloy in HNO3 solution containing F− ions. These hexagonal prisms were composed of (NH4)0.3TiO1.1F2.1 wrapped with anatase TiO2 shell. After calcination at 550 °C, the hexagonal anatase TiO2 prisms filled with nanoporous structure were formed. The as-formed materials were characterized by field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and UV–visible diffuse reflectance spectra (DRS). The formation procedure and mechanism were discussed. The as-formed hexagonal TiO2 combines the advantages of well-ordered hexagonal prism and nanoporous structure, and then exhibits good photocatalytic properties. The unique nanostructure of hexagonal TiO2 is expected to benefit as an advanced photocatalyst.
Original language | English |
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Pages (from-to) | 238-245 |
Number of pages | 8 |
Journal | Materials and Design |
Volume | 116 |
DOIs | |
Publication status | Published - 2017 Feb 15 |
Externally published | Yes |
Keywords
- Dealloying
- Hexagonal
- Nanoporous
- Photocatalysis
- Titanium dioxide
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering