Gas-phase synthesis of inorganic fullerene-like structures and inorganic nanotubes

Deepak, Francis Leonard; Tenne, Reshef

doi:10.2478/s11532-008-0043-2

Cited by 18 publications

(13 citation statements)

References 58 publications

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“…From a localized view, the S replaced the O as soon as the reduction of tungsten oxide initiated. From an overall point of view, the reduction and sulfurization processes must have taken place in parallel [26,[31][32][33]. Thus, the addition of H 2 into the reaction gases would accelerate the reduction of tungsten oxides and speed up the subsequent sulphidization, thereby leading to prompt formation of the WS 2 layers on the oxide surface.…”

Section: Influence Of Hmentioning

confidence: 99%

Continuous Production of IF-WS2 Nanoparticles by a Rotary Process

Wang

Hong

et al. 2014

Inorganics

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This manuscript demonstrates the design, modification and initial investigation of a rotary furnace for the manufacturing of inorganic fullerene WS 2 nanoparticles. Different preparation methods starting with various precursors have been investigated, of which the gas-solid reaction starting with WO 3 nanoparticles was the most efficient technique. Furthermore, the influence of temperature, reaction time, and reaction gases etc. on the synthesis of inorganic fullerene WS 2 nanomaterials was investigated, and these parameters were optimised based on combined characterisations using XRD, SEM and TEM. In addition, the furnace was further modified to include a baffled tube, a continuous gas-blow feeding system, and a collection system, in order to improve the batch yield and realise continuous production. This technique has improved the production from less than 1 g/batch in a traditional tube furnace to a few tens of g/batch, and could be easily scaled up to industry level production.

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Section: Influence Of Hmentioning

confidence: 99%

Continuous Production of IF-WS2 Nanoparticles by a Rotary Process

Wang

Hong

et al. 2014

Inorganics

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“…In recent years, numerous experimental and theoretical efforts have been devoted to study possible fullerene-like structures and nanotubes constructed by non-carbon elements to explore their specific physical and chemical properties [1-constant, large thermal conductivity and oxidation resistance leading to a number of potential applications regarding both of structural or electronic functions [21][22][23]. Due to the dramatic growth in industrial development and population, the natural atmospheric environment has become polluted and it is rapidly deteriorating.…”

Section: Introductionmentioning

confidence: 99%

Selective Adsorption Function of B16C16 Nano-Cage for H2O, CO, CH4 and NO2

et al. 2020

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The interactions between boron carbide (BC) nanocluster of B16C16 and H2O, NO2, CO, and CH4 small molecules were investigated by using density functional theory (DFT) computations to exploit the structural and electronic properties of the adsorbate/cluster complexes. The calculated adsorption energies of the most stable states are -16.6, -0.17, -1.28, -0.18 eV for NO2, CO, H2O, and CH4 molecules, respectively. Meanwhile, the interactions between CO and CH4 molecules and the cluster induce dramatic changes to the cluster electronic properties so that the molecular orbital (HOMO/LUMO) gap of cluster decreased its original value. It was shown that the phenomenon leads to an increment in the electrical conductivity of the cluster at a definite temperature. Furthermore, it is revealed that the adsorptions of NO2 and H2O molecules have no significant effects on the electronic properties of the cluster. Thus, this work suggests that the investigated B16C16 nano-cage could work as a selective gas sensor device towards CO, CH4, NO2 and H2O molecules. Original Res earch Arti cle http://www.ajchem-b.com Fig. 1. Geometrical presentations of pristine and small-molecule decorated B16C16 nano-clusters. Interacting distances are shown in Å.

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“…Among the most prominent nanomaterials that find applications in science and technology are the sp 2 carbon-based structures, which can present distinct morphologies upon preparation methods, such as single- or multiwalled nanotubes (carbon nanotube, CNT), − fullerenes, or graphenes . Each of these structures presents peculiar properties that find several technological applications, such as thermal and chemical resistance, flexibility, and electric charge transport, the last enabling them to act in charge-transfer processes.…”

Section: Introductionmentioning

confidence: 99%

Phe–Phe Di-Peptide Nanostructure Self-Assembling Modulated by Luminescent Additives

et al. 2019

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In this work, supramolecular l - l -diphenylalanine (Phe–Phe) nanostructures were self-assembled in solvents of distinct polarity and in the presence of luminescent additives of distinct conjugation length that physically adhere to the nanostructures to provide growth environments of distinct properties. When the additive is poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene], an electron donor polymer, and solvent is tetrahydrofuran (THF), Phe–Phe vesicle-like structures are obtained, whereas in water and in the presence of a similar additive in structure, poly[5-methoxy-2-(3-sulfopropoxy)-1,4-phenylenevinylene], nanotubes are formed. In contrast, when 9-vinyl-carbazole, an electron acceptor additive is used, nanotubes are formed even when THF is the solvent. The same structures are obtained when the additive is the macromolecule poly(vinyl carbazole). The morphologies of these self-assembled structures were observed by scanning electron microscopy, and their photophysical behavior was determined by steady-state fluorescence spectroscopy and time-resolved fluorescence spectroscopy. These data analyzed altogether inform about the formation mechanisms of such structures and about the influence that distinct interactions exert on self-assembling and charge-transfer processes through formation of complexes between the luminescent additives and the Phe–Phe nano- and microstructures.

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Gas-phase synthesis of inorganic fullerene-like structures and inorganic nanotubes

Cited by 18 publications

References 58 publications

Continuous Production of IF-WS2 Nanoparticles by a Rotary Process

Continuous Production of IF-WS2 Nanoparticles by a Rotary Process

Selective Adsorption Function of B16C16 Nano-Cage for H2O, CO, CH4 and NO2

Phe–Phe Di-Peptide Nanostructure Self-Assembling Modulated by Luminescent Additives

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