Photocatalytic Properties of Amorphous N-Doped TiO<sub>2</sub> Photocatalyst under Visible Light Irradiation
Amorphous TiO<sub>2</sub> doped with N was characterized by its photocatalytic activity under visible light irradiation. The amorphous N-doped TiO<sub>2</sub> was prepared by the sol-gel method through heat treatment at a low temperature. The photocatalyst showing activity in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-08-01
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| Series: | Catalysts |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4344/11/8/1010 |
| Summary: | Amorphous TiO<sub>2</sub> doped with N was characterized by its photocatalytic activity under visible light irradiation. The amorphous N-doped TiO<sub>2</sub> was prepared by the sol-gel method through heat treatment at a low temperature. The photocatalyst showing activity in visible light despite heat treatment at low temperature can be applied to plastics and has excellent utility. The N-doped TiO<sub>2</sub> appeared amorphous when heat-treated at 130 °C. It was converted into an anatase-type N-doped TiO<sub>2</sub> when this was calcined at 500 °C. The photocatalyst showed photocatalytic activities in the photocatalytic decomposition of formaldehyde and methylene blue under visible light irradiation. The photocatalyst exhibited a higher rate of hydrogen production than that of TiO<sub>2</sub> in photocatalytic decomposition of water under liquid-phase plasma irradiation. The bandgap of the amorphous N-doped TiO<sub>2</sub> measured by investigation of optical properties was 2.4 eV. The lower bandgap induced the photocatalytic activities under visible light irradiation. |
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| ISSN: | 2073-4344 |