期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 12, 页码 6815-6825出版社
AMER CHEMICAL SOC
DOI: 10.1021/am3019965
关键词
TiO2 nanobelt; mesopores; photocatalytic activity; N-F codoped; solvothermal method
资金
- National Natural Science Foundation of China [90923012, 61078058]
- Science and Technology Developing Project of Shaanxi Province [2012KW-11]
- Ministry of Science and Technology of China through 863-project [2009AA03Z218]
Anatase type nitrogen-fluorine (N-F) codoped TiO2 nanobelts were prepared by a solvothermal method in which amorphous titania microspheres were used as the precursors. The as-prepared TiO2 nanobelts are composed of thin narrow nanobelts and it is noted that there are large amount of wormhole-like mesopores on these narrow nanobelts. Photocatalytic activity of the N-F codoped TiO2 nanobelts was measured by the reaction of photocatalytic degradation of methyl orange. Results indicate that the photocatalytic activity of the N-F codoped TiO2 nanobelts is higher than that of P25, which is mainly ascribed to wormhole-like mesopores like prison, larger surface area, and enhanced absorption of light due to N-F codoping. Interestingly, it is also found that the photocatalytic activity can be further enhanced when tested in a new testing method because more photons can be captured by the nanobelts to stimulate the formation of the hole-electron pair.
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