Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 40, 2013
Previous Article Next Article

Effect of sulphur vacancy on geometric and electronic structure of MoS2 induced by molecular hydrogen treatment at room temperature

Author affiliations

Abstract

Investigations into the interaction between molecular hydrogen and molybdenum disulphide have been in increasing demand to improve the understanding of the hydrodesulphurisation process, especially the creation of sulphur vacancies which result in coordinatively unsaturated sites in MoS2. Here we present comprehensive studies of the structural and electronic modulation caused by exposure of MoS2 to H2 over a low temperature range, which may be helpful for industrial applications. Detail investigations were conducted with Raman spectroscopy, high resolution transmission electron microscopy (HRTEM), and electrical transport properties as a function of H2 gas pressure up to 24 bar from 295 K to 350 K. Upon exposure to H2, we observed bond-softening using Raman spectroscopy, a decrease in d-spacing from the TEM results, and an increase in conductance, all of which are consistent with the first-principles calculations. The results demonstrate the formation of sulphur vacancies even under low H2 pressure at low temperature.

Graphical abstract: Effect of sulphur vacancy on geometric and electronic structure of MoS2 induced by molecular hydrogen treatment at room temperature

Back to tab navigation

Supplementary files

Article information


Submitted
26 Apr 2013
Accepted
02 Aug 2013
First published
05 Aug 2013

RSC Adv., 2013,3, 18424-18429
Article type
Paper

Effect of sulphur vacancy on geometric and electronic structure of MoS2 induced by molecular hydrogen treatment at room temperature

B. H. Kim, M. Park, M. Lee, S. J. Baek, H. Y. Jeong, M. Choi, S. J. Chang, W. G. Hong, T. K. Kim, H. R. Moon, Y. W. Park, N. Park and Y. Jun, RSC Adv., 2013, 3, 18424
DOI: 10.1039/C3RA42072H

Social activity

Search articles by author

Spotlight

Advertisements