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Title: Mesoporous carbon-containing MoS{sub 2} materials formed from the in situ decomposition of tetraalkylammonium thiomolybdates

Abstract

Molybdenum disulfide with unique mesoporous structure was synthesized from tetraalkylammonium thiometallate precursors in situ decomposed in a batch reactor in the presence of dibenzothiophene (DBT). The precursors used in this study were tetraalkylammonium thiomolybdates with alkyl groups ranging from propyl to octyl. Molybdenum disulfide thus prepared presents high surface area (from 255 up to 329 m{sup 2}/g), high content of carbon (C/Mo=2.7-4.0) and type IV nitrogen adsorption-desorption isotherms when decomposed from tetrahexyl-, tetraheptyl- or tetraoctylammonium thiomolybdates. The as-formed materials are poorly crystallized with a very weak intensity of the (0 0 2) peak of the 2H-MoS{sub 2} structure. Such diffraction patterns are characteristic of exfoliated samples. Characterization by TEM shows a disordered layered structure with no long range order for the MoS{sub 2} catalysts. Therefore, the nature of the alkyl group in the precursor affects both the surface area and the pore size distribution of the final MoS{sub 2} catalysts with a progressive morphological modification up to a mesoporous organization.

Authors:
; ; ; ; ;
Publication Date:
OSTI Identifier:
20887967
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 38; Journal Issue: 6; Other Information: DOI: 10.1016/S0025-5408(03)00066-7; PII: S0025540803000667; Copyright (c) 2003 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION; CARBON; CATALYSTS; CHEMICAL PREPARATION; DECOMPOSITION; DESORPTION; ELECTRON MICROSCOPY; ISOTHERMS; MOLYBDENUM SULFIDES; NITROGEN; PRECURSOR; SURFACE AREA; X-RAY DIFFRACTION

Citation Formats

Alonso, Gabriel, Berhault, Gilles, Paraguay, Francisco, Rivera, Eric, Fuentes, Sergio, and Chianelli, Russell R. Mesoporous carbon-containing MoS{sub 2} materials formed from the in situ decomposition of tetraalkylammonium thiomolybdates. United States: N. p., 2003. Web. doi:10.1016/S0025-5408(03)00066-7.
Alonso, Gabriel, Berhault, Gilles, Paraguay, Francisco, Rivera, Eric, Fuentes, Sergio, & Chianelli, Russell R. Mesoporous carbon-containing MoS{sub 2} materials formed from the in situ decomposition of tetraalkylammonium thiomolybdates. United States. https://doi.org/10.1016/S0025-5408(03)00066-7
Alonso, Gabriel, Berhault, Gilles, Paraguay, Francisco, Rivera, Eric, Fuentes, Sergio, and Chianelli, Russell R. 2003. "Mesoporous carbon-containing MoS{sub 2} materials formed from the in situ decomposition of tetraalkylammonium thiomolybdates". United States. https://doi.org/10.1016/S0025-5408(03)00066-7.
@article{osti_20887967,
title = {Mesoporous carbon-containing MoS{sub 2} materials formed from the in situ decomposition of tetraalkylammonium thiomolybdates},
author = {Alonso, Gabriel and Berhault, Gilles and Paraguay, Francisco and Rivera, Eric and Fuentes, Sergio and Chianelli, Russell R},
abstractNote = {Molybdenum disulfide with unique mesoporous structure was synthesized from tetraalkylammonium thiometallate precursors in situ decomposed in a batch reactor in the presence of dibenzothiophene (DBT). The precursors used in this study were tetraalkylammonium thiomolybdates with alkyl groups ranging from propyl to octyl. Molybdenum disulfide thus prepared presents high surface area (from 255 up to 329 m{sup 2}/g), high content of carbon (C/Mo=2.7-4.0) and type IV nitrogen adsorption-desorption isotherms when decomposed from tetrahexyl-, tetraheptyl- or tetraoctylammonium thiomolybdates. The as-formed materials are poorly crystallized with a very weak intensity of the (0 0 2) peak of the 2H-MoS{sub 2} structure. Such diffraction patterns are characteristic of exfoliated samples. Characterization by TEM shows a disordered layered structure with no long range order for the MoS{sub 2} catalysts. Therefore, the nature of the alkyl group in the precursor affects both the surface area and the pore size distribution of the final MoS{sub 2} catalysts with a progressive morphological modification up to a mesoporous organization.},
doi = {10.1016/S0025-5408(03)00066-7},
url = {https://www.osti.gov/biblio/20887967}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = 6,
volume = 38,
place = {United States},
year = {Mon May 26 00:00:00 EDT 2003},
month = {Mon May 26 00:00:00 EDT 2003}
}