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摘要:
After a first-principles calculation, the calculated energy gaps of TiO2, MoS2 and TiO2/MoS2 were found to be 2.35eV, 1.68eV and 1.95eV, respectively. The conduction-band bottom of anatase TiO2 was determined by the electronic distribution of the Ti (d) orbit, and the valence-band top of anatase TiO2 was determined by the electronic distribution of the O (p) orbit. The conduction-band bottom of the MoS2 was determined by the electronic distribution of the Mo (d) orbit, and the valence-band top of MoS2 was determined by a hybridization of S (p) orbit and Mo (d) orbit. The conduction-band bottom of TiO2/MoS2 was determined by a hybridization of the Mo (d) orbit, the Ti (d) orbit and the S (p) orbit, and the valence-band top of TiO2/MoS2 was determined by a hybridization of the S (p) orbit, the O (p) orbit and the Mo (d) orbit. The MoS2 nanoflowers, MoS2 nanorods and the TiO2/MoS2 heterostructures were synthesised through a simple hydrothermal procedure. Photocatalytic degradation experiments demonstrated photodegradation of the TiO2/MoS2 heterostructures was 99.62% for rhodamine B, 96.42% for methylene blue and 87.45% for methyl orange.
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来源 :
CHEMISTRYSELECT
ISSN: 2365-6549
年份: 2018
期: 6
卷: 3
页码: 1713-1718
2 . 1 0 0
JCR@2022
JCR分区:3