Journal
RESEARCH ON CHEMICAL INTERMEDIATES
Volume 41, Issue 10, Pages 7725-7737Publisher
SPRINGER
DOI: 10.1007/s11164-014-1856-6
Keywords
Oxides; Electronic structure; Nanowires; Visible light; Photocatalytic oxidation
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Funding
- National Natural Science Foundation of China [21203077, 51471077]
- Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University [KLET1214]
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Silver vanadate (beta-AgVO3) nanowires were synthesized by a hydrothermal method, assisted with surfactant, and evaluated for degradation of 2-propanol under visible-light irradiation. Field-emission scanning electron microscopy (FE-SEM) revealed the beta-AgVO3 nanowires were of uniform size-several micrometers long and similar to 20 nm in diameter. According to the diffuse reflectance spectrum of the beta-AgVO3 nanowires their energy band gap was 2.2 eV, corresponding to a wide range of visible-light absorption up to 550 nm. The electronic structure of beta-AgVO3 was calculated theoretically on the basis of density functional theory. The beta-AgVO3 nanowires catalyst had greater photocatalytic activity than commercial N-TiO2 in the degradation of 2-propanol under visible-light irradiation. This was mainly ascribed to the narrow band gap, good crystallinity, and large surface-to-volume ratio of beta-AgVO3 nanowires.
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