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Issue 16, 2017, Issue in Progress
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Insight into the structure and energy of Mo27SxOy clusters

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Abstract

Oxygen incorporated molybdenum sulfide (MoS2) nanoparticles are highly promising materials in hydrodesulfurization catalysis, mechanical, electric, and optical applications. We report a systematic theoretical study of the successive oxidation reactions of the Mo27SxOy nanoparticles and the reaction network, along with the electronic structure changes caused by the oxygen substitution. The replacement of surface sulfur by oxygen atoms is thermodynamically favorable. Our results indicate that the oxidation on the S edge with 100% and 50% coverage is more favored than on the Mo edge. Meanwhile, it is found that the oxidation on the S edge with 100% coverage has similar replacement ability by oxygen as on the S edge with 50% coverage. Thus, sulfur coverage does not play an important role in the oxidation on the S edge. Further comparison shows that the oxidation on corner sites is more favorable than on edge sites. In addition, the replacement of the bulky sulfur on the Mo edge is equally as favored as those of sulfur on the S edge. This work provides important information on the thermodynamics of the Mo27SxOy nanoparticles, and gives new insights into the mechanism of the oxidation of MoS2 and the sulfidation of MoO3.

Graphical abstract: Insight into the structure and energy of Mo27SxOy clusters

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Publication details

The article was received on 03 Nov 2016, accepted on 24 Jan 2017 and first published on 31 Jan 2017


Article type: Paper
DOI: 10.1039/C6RA26264C
Citation: RSC Adv., 2017,7, 9513-9520
  • Open access: Creative Commons BY license
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    Insight into the structure and energy of Mo27SxOy clusters

    X. Liu, D. Cao, T. Yang, H. Li, H. Ge, M. Ramos, Q. Peng, A. K. Dearden, Z. Cao, Y. Yang, Y. Li and X. Wen, RSC Adv., 2017, 7, 9513
    DOI: 10.1039/C6RA26264C

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