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Indexed by:期刊论文

Date of Publication:2014-03-01

Journal:FUEL

Included Journals:SCIE、EI、Scopus

Volume:119

Page Number:163-169

ISSN No.:0016-2361

Key Words:Molybdenum disulfide; Graphene; Microwaves; Hydrodesulfurization

Abstract:This work presents a facile and rapid approach for the preparation of graphene sheet (GS) decorated by nanometer scaled molybdenum disulfide (MoS2) with effective hydrodesulfurization activity for carbonyl sulfide conversion at low temperature (<300 degrees C). Using functionalized GS as microwave susceptor and ammonium tetrathiomolybdate as the precursor of MoS2, nanocomposites consisting of MoS2 nanoparticles and GS was prepared through a solvent-free microwave-assisted route. The synthesized MoS2 and GS hybrid (M-MoS2/GS) was characterized by X-ray diffraction, Fourier transform infrared spectrometry, Raman spectrometry, scanning and transmission electron microscopies as well as low temperature nitrogen adsorption. Compared to MoS2/GS and MoS2/activated carbon catalysts made by conventional thermal decomposition, the M-MoS2/GS composite shows excellent performance for the hydrodesulfurization of carbonyl sulfide. The high catalytic efficiency over M-MoS2/GS composite demonstrates that microwave irradiation is helpful for the preparation of graphene-based catalysts with enhanced catalytic activity. The low-cost synthesis procedure paves the way for the exploitation of the presented hybrid materials as catalysts for the hydrodesulfurization of coal-based gas. (C) 2013 Elsevier Ltd. All rights reserved.