Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 43, Pages 21199-21204Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp205939e
Keywords
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Funding
- Russian Foundation for Basic Research [10-03-00696-a]
- Ministry of Education and Science of Russian Federation [2.1.2/9444]
- Russian-German Laboratory at BESSY
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Composite MoS2/carbon nanotube material has been produced by hydrothermal decomposition of a mixture of multiwall carbon nanotubes (CNTs) and a water solution of ammonium molybdate and thiourea. Transmission electron microscopy and Raman spectroscopy showed formation of MoS2 layers on the CNT surface and MoS2 flakes. X-ray photoelectron spectroscopy revealed a downshift of C Is peak of the composite as compared to the pristine CNT sample that was related to charge transfer between the components. This fact was confirmed by near-edge X-ray absorption fine structure spectroscopy which detected a decrease of intensity of pi* resonance in the C K-edge spectrum after the MoS2 deposition. Quantum-chemical calculations of a CNT@MoS2 model showed a positive charging of the CNT surface. Comparison of field emission characteristics of CNTs and the composite indicated lowering of the voltage threshold in the latter sample.
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