Temperature-programed reduction of unpromoted MoS2-based hydrodesulfurization catalysts: Experiments and kinetic modeling from first principles

Dinter, Nicolas; Rusanen, Marko; Raybaud, Pascal; Kasztelan, S.; Silva, Pedro da; Toulhoat, H.

doi:10.1016/j.jcat.2009.07.017

Cited by 37 publications

(40 citation statements)

References 40 publications

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“…[40][41][42][43] Although further studies need to be done in order to fully unveil the processes occurring at these edges, some theoretical studies have already shown the possibility of their modification through adsorption and desorption processes. [52][53][54] Starting with the most stable 50% S zig-zag edges, 1,2-dithiolanes can directly bind to the exposed Mo at this edge, saturating and resulting in 100% S coverage with covalently attached species, preferentially in a binding configuration perpendicular to the edge (cf. Fig.…”

Section: Discussionmentioning

confidence: 99%

Functionalization of MoS2 with 1,2-dithiolanes: toward donor-acceptor nanohybrids for energy conversion

et al. 2017

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The covalent functionalization of exfoliated semiconducting MoS 2 by 1,2-dithiolanes bearing an ethylene glycol alkyl chain terminated to a butoxycarbonyl-protected amine and a photoactive pyrene moiety is accomplished. The MoS 2 -based nanohybrids were fully characterized by complementary spectroscopic, thermal, and microscopy techniques. Markedly, density functional theoretical studies combined with X-ray photoelectron spectroscopy analysis demonstrate preferential edge functionalization, primarily via sulfur addition along partially sulfur saturated zig-zag MoS 2 molybdenum-edges, preserving intact the 2D basal structure of functionalized MoS 2 -based nanohybrids as confirmed by high-resolution transmission electron microscopy and electron energy loss spectroscopy. Furthermore, in the MoS 2 -pyrene hybrid, appreciable electronic interactions at the excited state between the photoactive pyrene and the semiconducting MoS 2 were revealed as inferred by steady-state and time-resolved photoluminescence spectroscopy, implying its high potentiality to function in energy conversion schemes.

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Section: Discussionmentioning

confidence: 99%

Functionalization of MoS2 with 1,2-dithiolanes: toward donor-acceptor nanohybrids for energy conversion

et al. 2017

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“…As Balantseva et al [164] pointed out, whereas literature concerning in situ infrared studies of surface of oxide materials is very abundant [165][166][167], the one on sulphides is instead quite limited. Some works were reported about the surface properties of unsupported or supported MoS 2 , an increasingly studied catalyst for hydrodesulphurisation [168].…”

Section: The Surface Of Transition Metal Sulphides: Bulk and Nanocrysmentioning

confidence: 99%

“…In general, these edge surfaces are characterized by strong rearrangements due to the breaking of S-S bonds. After the pioneering work by Raybaud et al [168] the MoS 2 edge surfaces have been systematically studied and compared theoretically by Spirko et al [175], Figure 3. transition elements of each period (e.g., TiS2, MoS2) is a peculiar one. As it is common for layered compounds, the (001) surface is very stable and practically inert, so that most interest has been devoted to the so-called "edge surfaces", which terminate the MoS2 nanoribbons.…”

Section: The Surface Of Transition Metal Sulphides: Bulk and Nanocrysmentioning

confidence: 99%

“…In general, these edge surfaces are characterized by strong rearrangements due to the breaking of S-S bonds. After the pioneering work by Raybaud et al [168] the MoS2 edge surfaces have been systematically studied and compared theoretically by Spirko et al [175], Figure 3. The most stable are the (1010) "diagonally" cut in such a way to include half of the terminal S ions, followed by (1210) edges cut in an analogous way.…”

Section: The Surface Of Transition Metal Sulphides: Bulk and Nanocrysmentioning

confidence: 99%

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Functionalisation of Colloidal Transition Metal Sulphides Nanocrystals: A Fascinating and Challenging Playground for the Chemist

2017

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Abstract:Metal sulphides, and in particular transition metal sulphide colloids, are a broad, versatile and exciting class of inorganic compounds which deserve growing interest and attention ascribable to the functional properties that many of them display. With respect to their oxide homologues, however, they are characterised by noticeably different chemical, structural and hence functional features. Their potential applications span several fields, and in many of the foreseen applications (e.g., in bioimaging and related fields), the achievement of stable colloidal suspensions of metal sulphides is highly desirable or either an unavoidable requirement to be met. To this aim, robust functionalisation strategies should be devised, which however are, with respect to metal or metal oxides colloids, much more challenging. This has to be ascribed, inter alia, also to the still limited knowledge of the sulphides surface chemistry, particularly when comparing it to the better established, though multifaceted, oxide surface chemistry. A ground-breaking endeavour in this field is hence the detailed understanding of the nature of the complex surface chemistry of transition metal sulphides, which ideally requires an integrated experimental and modelling approach. In this review, an overview of the state-of-the-art on the existing examples of functionalisation of transition metal sulphides is provided, also by focusing on selected case studies, exemplifying the manifold nature of this class of binary inorganic compounds.

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“…As carbon nanostructures, they present impressive characteristics owing to their superior catalytic and tribological properties [6][7][8][9][10][11]. The possible formation of ionically conducting intercalation compounds with alkali metals opens up a perspective for the application in micro and nano-electronics and for electrochemistry.…”

Section: Introductionmentioning

confidence: 99%

Polystyrene/MoS2@oleylamine nanocomposites

Altavilla¹,

Fedi²,

Sorrentino³

et al. 2014

AIP Conference Proceedings

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Multilevel charging and discharging mechanisms of nonvolatile memory devices based on nanocomposites consisting of monolayered Au nanoparticles embedded in a polystyrene layer Appl. Phys. Lett.Thermal mismatch strains in sidewall functionalized carbon nanotube/polystyrene nanocomposites Abstract. The effects of adding different concentrations of MoS 2 @oleylamine nano particles on the thermal and mechanical properties of polystyrene (PS) nanocomposites have been investigated. X-ray diffraction and optical microscopy were used to characterize the morphology of the resulting nanocomposites. The thermal stability of the nanocomposites has been characterized by thermogravimetric analysis. It has been found that the MoS 2 @oleylamine nanoparticles have a good compatibility with the PS matrix forming homogeneous dispersion even at high concentrations. The PS/MoS 2 @oleylamine nanocomposites showed enhanced thermal stability in comparison with neat polystyrene.

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Temperature-programed reduction of unpromoted MoS2-based hydrodesulfurization catalysts: Experiments and kinetic modeling from first principles

Cited by 37 publications

References 40 publications

Functionalization of MoS2 with 1,2-dithiolanes: toward donor-acceptor nanohybrids for energy conversion

Functionalization of MoS2 with 1,2-dithiolanes: toward donor-acceptor nanohybrids for energy conversion

Functionalisation of Colloidal Transition Metal Sulphides Nanocrystals: A Fascinating and Challenging Playground for the Chemist

Polystyrene/MoS2@oleylamine nanocomposites

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