12058-18-3

Usage

Uses

1. Used in Lubrication Industry:
Molybdenum Selenide is used as a solid lubricant for its ability to reduce friction and wear between moving parts. It is also used in the preparation of lubricant films through sputtering of 99.9% pure material.
2. Used in Electronics Industry:
Molybdenum Selenide is used as a material for molybdenum chalcogenide thin film transistors, which are crucial components in solar cells. The compound plays an important role in the rapidly expanding research area of solar energy applications.
3. Used in Optoelectronics Industry:
Molybdenum Diselenide monolayer film is ideal for applications in optoelectronics due to its direct optical band gap, photoluminescence peak, and other properties. Its narrower bandgap, higher optical absorbance, and larger spin-splitting energy compared to MoS2 make MoSe2 ultrathin films potentially better for applications in tunnel FETs and optoelectronic devices.
4. Used in Semiconductor Research:
The unique properties of Molybdenum Selenide, such as its layered structure and electronic properties, make it a promising material for research in the field of semiconductors and the development of new electronic devices.
5. Used in Nanotechnology:
Molybdenum Diselenide (MoSe2) quantum dots can be prepared via chemical exfoliation, which is one of the most suitable routes towards large-scale production of nanoparticles and nanosheets. This application is particularly relevant in the field of nanotechnology, where MoSe2 quantum dots can be utilized in various applications, such as sensors, catalysts, and energy storage devices.

Synthesis

High-quality molybdenum diselenide monolayer?film?was grown directly on the substrates (SiO2/Si) by the chemical vapour deposition (CVD) method.

InChI:InChI=1/Mo.2Se/rMoSe2/c2-1-3

Upstream product

• 7782-49-2 selenium 
• 7439-98-7 molybdenum 
• 7446-08-4 selenium(IV) oxide 
• 7631-95-0 sodium molybdate dihydrate 

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Relevant academic research and scientific papers

Synthesis of MoSe2 nanocrystallites by a solvothermal conversion from MoO3

Nanocrystalline 2H-MoSe2 was prepared from MoO3, N2H4·H2O, and Se in pyridine at 300°C for 12 h by a solvothermal method. A gray-black product was collected and characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis. The XRD pattern showed that a phase-pure product was prepared. TEM analysis showed that the product was polycrystalline and had plate-shaped particles with a diameter of about 40 nm. The conversion process from MoO3 to MoSe2 is discussed.

MoSe2/CdSe Heterojunction Destruction by Cation Exchange for Photoelectrochemical Immunoassays with a Controlled-Release Strategy

Herein, a split-type immunoassay strategy instigated by cation exchange (CE) and changing the capacity of an electron donor in an electrolyte solution is optimized, namely, for differentiating the biological-specific binding assay and photoelectrochemical (PEC) analysis. MoSe2/CdSe, a Z-scheme heterojunction with efficient visible light absorption and a low recombination of carriers, is used as a photoelectrode substrate. Silver ions (Ag+) as the initiator of CE are generated by the acidolysis of evenly loaded silver nanoparticles on mesoporous silica nanospheres (MSNs). The theoretical calculation and experimental results confirm that Ag+ replaces Cd2+ in CdSe and retains the crystal structure of MoSe2. However, this behavior destroys the perfectly matched heterojunction structure and introduces defects, which led to the reduction of the photocurrent response. In addition, ascorbate oxidase in combination with MSNs can be used as a consumptive agent of the electron donor, which further improves the sensitivity and reliability of the sensor. As a proof of principle, neuron-specific enolase was applied to elucidate the potential application of the PEC immunoassay in clinical diagnosis, and the obtained linear range of the sensor was from 0.0001 to 100 ng/mL with a detection limit of 28 fg/mL (S/N = 3).

Controllable synthesis of flower-like MoSe2 3D microspheres for highly efficient visible-light photocatalytic degradation of nitro-aromatic explosives

Nitro-aromatic explosives existing on the surface of the Earth are difficult to degrade, and they greatly harm the ecological environment and human security. Herein, we successfully conducted the large-scale synthesis of novel flower-like MoSe2 3D microspheres and nanospheres by a simple hydrothermal method. The two types of MoSe2 3D spheres had a high crystal quality with abundant nanosheets, and their diameters were approximately 1.5 μm and 300-400 nm, respectively. The Brunauer-Emmett-Teller (BET) and UV-vis diffuse reflectance spectra (UV-vis DRS) analyses revealed that the specific surface area and the band gap of MoSe2 microspheres and nanospheres were 33.3 m2 g-1 and 1.68 eV and those of the nanostructures were 13.6 m2 g-1 and 1.52 eV, respectively. Moreover, two different morphologies of MoSe2 were used for the degradation of nitrobenzene (NB), p-nitrophenol (PNP) and 2,4-dinitrophenol (2,4-DNP) through a photocatalytic process. The results demonstrated that the three nitro-aromatic explosive solutions NB, PNP and 2,4-DNP (40 mg L-1) could be completely degraded by MoSe2 3D microspheres under visible-light irradiation in 3.5 h, 1.5 h and 2.5 h, and the degradation time for MoSe2 nanospheres was 4.5 h, 2.5 h and 4 h, respectively. The mechanism of the photocatalytic reaction was also investigated in detail, and the photocatalytic degradation process was found to follow the pseudo-first-order kinetics. Our study demonstrated the potential application of MoSe2 microspheres as a photocatalyst for the degradation of nitro-aromatic explosives and other organic contaminants.

Structural, optical and microscopic studies of tungsten substituted molybdenum diselenide thin films

A modified chemical bath deposition method has been developed to prepare Mo1-xWxSe2 layer type semiconductor thin films. Various preparative conditions of the thin films are outlined. The films were characterized by X-ray diffraction, optical absorption, electrical measurements and thermoelectric techniques. The grown films were found to be uniform, well adherent to substrate and brown in color. The X-ray diffraction (XRD) study indicates the polycrystalline nature in single hexagonal phase over whole range of composition. Analysis of absorption spectra gave direct type of band gap, the magnitude of which increases slightly as tungsten content in the film is increased and electrical conductivity at room temperature was found to be 10-5 to 10-2 (Ω cm)-1. All the films show n-type conductivity.

Cr1.45Tl1.87Mo15Se19, a monoclinic variant of the hexa-gonal In3Mo15Se 19 type

The monoclinic compound Cr1.45Tl1.87Mo 15Se19 (chromium thallium penta-deca-molybdenum nona-deca-selenide) represents a variant of the hexa-gonal In3Mo 15Se19 structure type. Its

Kinetics and Diffusing Species in the Reaction between Molybdenum and Selenium Vapor

Metallic molybdenum was selenidized at temperatures of 773-873 K in selenium vapor at 1.33 kPa.The reaction products were identified to be MoSe2 alone under all the experimental conditions.All the selenidizations obeyed a parabolic rate law.A marker experiment indicated that selenium was the component which diffused.

Modulating in-plane electron density of molybdenum diselenide via spontaneously atomic-scale palladium doping enables high performance lithium oxygen batteries

Lithium-oxygen batteries (LOBs) are considered to be one of the most competitive energy storage devices due to their high theoretical energy density. However, challenges including poor catalytic activity and durability of the oxygen electrode seriously hinder the in-depth development of LOBs. Adjusting the surface electronic structure of the oxygen electrode provides a new prospect for realizing highly efficient electrocatalysts. In this contribution, we report that atomic-scale palladium (Pd) involving in MoSe2 (Pd–MoSe2) is capable of adjusting the in-plane electron density of MoSe2 via spontaneous interface chemical reactions, thereby accelerating the electron migration along the in-plane direction. The synergy between the created Se vacancies and Pd atoms can further increase the electroactive sites on the Pd–MoSe2 surface, which is conducive to improving the catalytic activity of the electrode and thereby accelerating the kinetics of oxygen electrode reactions. The results show that Pd–MoSe2 based LOBs exhibit excellent electrochemical performance such as high Coulombic efficiency (97.81%) as well as extended cycle life (1952 h). This work shows that the adjustment of in-plane electron density by exotic metal atom is a viable strategy to improve the catalytic activity of layered transition metal selenide, which provides the possibility of developing highly efficient electrocatalysts for LOBs.

Preparation of MoSe2 nano-islands array embedded in a TiO2 matrix for photo-regulated resistive switching memory

The electrically driven resistance change of a material, called memristive switching, is a fascinating phenomenon in the development of next generation nonvolatile memory alternatives to flash technology. Herein, the composite of MoSe2 nano-islands array inserted into TiO2 matrix grown on fluorine-doped tin oxide (FTO) substrate was prepared by anodic aluminum oxide (AAO) template assisted radio frequency magnetron sputtering. Further, a photo-controlled resistive switching memory device with Ag/[MoSe2/TiO2]/FTO structure is demonstrated. The device presents stable resistive switching memory behaviors in dark and under illumination respectively. Finally, the mechanism for the photo-controlled memory behaviors is discussed in detail. This implication provides a foundation for exploring the multifunctional composites and their applications in photo-controlled nonvolatile memory devices.

Synthesis and characterization of indium intercalation compounds of molybdenum sulphoselenide

The synthesis, structure and properties of indium-intercalated compounds of molybdenum sulphoselenide, In1/3MoSxSe2-x (0 ≤ x ≤ 2) compounds were investigated. X-ray analysis shows that all these compounds possess layer-typ

Dual surfactants applied in synthesis of MoSe2 for high-efficiency hydrogen evolution reaction

Molybdenum diselenide (MoSe2) has been considered as a promising electrocatalyst for the hydrogen evolution reaction (HER), having great significance in the exploration of catalysts for green energy production. To obtain excellent electrocatalytic properties of MoSe2, the structural design of materials has become a commonly-used strategy. Hence, the combination of hexadecyl trimethyl ammonium bromide (CTAB) and polyethylene-polypropylene glycol (F68) was employed during hydrothermal process to modify the structure of MoSe2. Compared with using only one surfactant (CTAB or F68), MoSe2 catalyst represents better surface activity, more active sites and enhanced catalytic activity in the presence of dual surfactants. The as-prepared MoSe2-CTAB@F68 catalyst achieves an excellent HER activity with an overpotential of 189 mV versus the reversible hydrogen electrode (RHE) at a current density of 10 mA cm?2 and a low Tafel slope of 62 mV dec?1. Therefore, this work paves a way to prepare electrocatalysts with dual surfactants existence, which is greatly attractive for an optimizing electrocatalyst performance in a more efficient way.