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Twisted Nanostructures of 2H-MoS2 Slabs

Published online by Cambridge University Press:  31 January 2011

Manuel Ramos ,
Domingo A. Ferrer ,
Miguel José-Yacamán ,
Gilles Berhault ,
Brenda Torres  and
Russell r. Chianelli
Manuel Ramos
Affiliation:
[email protected], University of Texas at El Paso, MRTI, El Paso, Texas, United States
Domingo A. Ferrer
Affiliation:
[email protected], University of Texas at Austin, Microelectronics Research Center, Austin, Texas, United States
Miguel José-Yacamán
Affiliation:
[email protected], University of Texas at San Antonio, Physics, San Antonio, Texas, United States
Gilles Berhault
Affiliation:
[email protected], University of Lyon, France, IRCELYON, CNRS, Lyon, Lyon, France
Brenda Torres
Affiliation:
[email protected], University of Texas at El Paso, MRTI, El Paso, Texas, United States
Russell r. Chianelli
Affiliation:
[email protected], UTEP, MRTI, 300 Burges Hall, El Paso, Texas, 79968-0685, United States, 915 747-7555, 915 747-6907
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Abstract

In the last decades, HRTEM approach has been quite fruitful to study structural characteristics of layered transition metal sulfide (LTMS) catalytic materials since providing direct local information about the structural organization of this quite important class of catalysts at the nanoscale level. However, up to now, HRTEM observations of some common localized structural organization like honeycomb-like structures have remained unexplained. In the present study, a structural model corresponding to stacked 2H-MoS2 slabs twisted along their basal direction is proposed to explain honeycomb like-structures observed by HRTEM. This model is based on a comparison between experimental and simulated images of 2H-MoS2 catalysts promoted with cobalt. The resulting Density of States (DOS) of the twisted structure was then calculated.

Keywords

simulationtransmission electron microscopy (TEM)catalytic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1217: Symposium Y – Catalytic Materials for Energy, Green Processes and Nanotechnology , 2009 , 1217-Y06-02
Copyright
Copyright © Materials Research Society 2010

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