Air-stable monodispersed Mo6S3I6nanowires

Vrbanic, Daniel; Remškar, Maja; Jesih, Adolf; Mrzel, Aleš; Umek, Polona; Ponikvar, Maja; Jančar, Boštjan; Meden, Anton; Novosel, Barbara; Pejovnik, S.; Venturini, P.; Coleman, Jonathan N.; Mihailović, D.

doi:10.1088/0957-4484/15/5/039

Cited by 108 publications

(130 citation statements)

References 15 publications

(23 reference statements)

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“…which indicates that Th has been incorporated onto the MoSI modified ITO substrate. Furthermore, characteristic peaks of MoSI NWs on the two ITO substrates are also consistent [25]. We conclude that the immobilization of thionin is mainly based on the strongly electrostatic interaction between negatively charged MoSI NWs and positively charged Th as well as reduced state of Th [8].…”

supporting

confidence: 69%

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo₆S_9‐xI_x Nanowire Modified Glassy Carbon Electrode

et al. 2009

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A simple and enzymeless amperometric sensor for the detection of H 2 O 2 based on a new kind of nanomaterial Mo 6 S 9Àx I x (MoSI) nanowires (NWs) was developed. The construction of the sensing platform was based on strong electrostatic interactions between negatively charged MoSI NWs and positively charged thionin molecules. MoSI NWs act as not only a good substrate for the immobilization of redox mediator thionin, but also a promoter for electrocatalysis of H 2 O 2 . The fabricated sensor showed a wide linear range over the concentration of H 2 O 2 from 5 mM to 2.8 mM with a measurable lowest detection of 0.8 mM; furthermore, it exhibited good stability and reproducibility. [24] etc. have been used for the immobilization of Th on various electrode materials. These systems were usually divided into two types. One was based on the co-immobilization of horseradish peroxidase and Th on various electrode materials by covalent linking methods [11, 13 -14, 17 -18]. Most of these systems were complicated and time-consuming, involving multistep synthetic procedures; furthermore, the activity of enzymes was easily affected by temperature, pH, humidity and toxic chemicals. The other was based on enzymeless immobilization, and most of them were involved in CNTs, which were used as an immobilization substance due to their high electrical conductivity, high chemical stability, extremely high mechanical strength and large surface area [8 -10, 12,]. Unfortunately, these systems usually could not avoid complex organic synthesis work in order to make Th be immobilized stably on the electrodes. Consequently, to explore and develop a simple, time-saving and reliable strategy using new nanomaterials for the enzymeless immobilization of Th arouses our research interest.Molybdenum-chalcogenide-halide nanowires (NWs) which are composed of molybdenum (Mo), sulfur (S) and iodine (I) in the form of Mo 6 S 9Àx

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supporting

confidence: 69%

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo₆S_9‐xI_x Nanowire Modified Glassy Carbon Electrode

et al. 2009

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“…Molybdenum sulfur iodine nanowire material was synthesized in a single-step reaction directly from the elements in a sealed ampoule as described previously [4]. SEM images of this material were taken using a JEOL JXA-840A.…”

Section: Methodsmentioning

confidence: 99%

“…[4] This material can be fabricated in a single-step process and consists of subnanometer-diameter nanowires that self-assemble into weakly bound bundles. These wires are conductive [5] and all have identical electronic properties.…”

mentioning

confidence: 99%

Observation of van der Waals Driven Self‐Assembly of MoSI Nanowires into a Low‐Symmetry Structure Using Aberration‐Corrected Electron Microscopy

et al. 2007

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“…They can be aligned using dielectrophoresis, 9 and efficiently connected to gold nanoparticles or green fluorescent proteins simply by mixing aqueous solutions of both species. 10 Finally, they are stable in air up to 350 1C, 1 and exhibit good field emission 11 and lubricating properties. 12 The two Mo 6 S x I 9Àx NW stoichiometries that have been researched so far, nominally Mo 6 S 3 I 6 and Mo 6 S 4.5 I 4.5 , exhibit many exciting properties, as well as excellent processability.…”

Section: Introductionmentioning

confidence: 99%

Processing and characterisation of Mo₆S₂I₈nanowires

Schnabel

Nicholls

Salzmann

et al. 2010

Phys. Chem. Chem. Phys.

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One-dimensional nanostructures based on the Mo-S-I system have recently aroused a lot of interest as a viable alternative to the ubiquitous carbon nanotube due to their uniform structure and electronic properties for a given composition. Previous research on the Mo 6 S 3 I 6 and Mo 6 S 4.5 I 4.5 stoichiometries has also shown them to be soluble in common solvents like water, acetone or isopropyl alcohol, and to debundle on dilution. Here, the solubility, debundling and composition of Mo 6 S 2 I 8 nanowires are presented. They were found to be most soluble in dimethylformamide, which retained 47 wt% of a 0.08 gl À1 nanowire (NW) material dispersion as thin NW bundles after one week. Dispersions of 0.8 gl À1 and 5 gl À1 even retained 54 wt% and 66 wt%, respectively. However the NW material was completely insoluble in water, and the surface energy of Mo 6 S 2 I 8 NWs was deduced as 67 mJ m À2 , higher than for other Mo-S-I NWs. UV-vis-NIR spectroscopy showed nanowire peaks familiar from Mo 6 S 3 I 6 and Mo 6 S 4.5 I 4.5 spectra around 1.8 and 2.8 eV, as well as unforeseen ultraviolet peaks at 3.5 and 4.4 eV. These chemical differences suggest an alternate, more strongly bonded structure to that seen for Mo 6 S 3 I 6 and Mo 6 S 4.5 I 4.5 NWs. Films deposited from a range of concentrations were investigated using atomic force microscopy (AFM) to determine bundle diameter distributions. The average diameter and the spread in diameters were found to decrease somewhat with decreasing concentration. However extrapolation gave a finite bundle size at infinite dilution, and an extension of the existing debundling model is proposed to take this into account. To confirm the nominal stoichiometry of Mo 6 S 2 I 8 , which does not follow the generic Mo 6 S x I 9Àx formula of previous stoichiometries, EDX was carried out. The composition of nanowire bundles was found to be Mo 6 S 2.3 I 8.6 , supporting the nominal composition.

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Air-stable monodispersed Mo₆S₃I₆nanowires

Cited by 108 publications

References 15 publications

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo₆S_9‐xI_x Nanowire Modified Glassy Carbon Electrode

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo₆S_9‐xI_x Nanowire Modified Glassy Carbon Electrode

Observation of van der Waals Driven Self‐Assembly of MoSI Nanowires into a Low‐Symmetry Structure Using Aberration‐Corrected Electron Microscopy

Processing and characterisation of Mo₆S₂I₈nanowires

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Air-stable monodispersed Mo6S3I6nanowires

Cited by 108 publications

References 15 publications

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo6S9‐xIx Nanowire Modified Glassy Carbon Electrode

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo6S9‐xIx Nanowire Modified Glassy Carbon Electrode

Observation of van der Waals Driven Self‐Assembly of MoSI Nanowires into a Low‐Symmetry Structure Using Aberration‐Corrected Electron Microscopy

Processing and characterisation of Mo6S2I8nanowires

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Air-stable monodispersed Mo₆S₃I₆nanowires

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo₆S_9‐xI_x Nanowire Modified Glassy Carbon Electrode

A Novel Hydrogen Peroxide Amperometric Sensor based on Thionin Incorporated onto a Mo₆S_9‐xI_x Nanowire Modified Glassy Carbon Electrode

Processing and characterisation of Mo₆S₂I₈nanowires