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Carbon cloth supported nickel sulfide-molybdenum sulfide heterogeneous nano-sheet array structure and preparation method thereof

A nanosheet array and nanosheet technology, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve problems such as unfavorable production applications and cumbersome experimental steps, and achieve low cost, high-quality equipment and processes Simple, high product yield effect

Inactive Publication Date: 2019-01-18
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, to grow inorganic active materials on an inert carbon substrate often requires pretreatment of the substrate, such as using concentrated sulfuric acid, concentrated nitric acid, etc. for surface oxidation etching. The experimental steps of these methods are cumbersome and dangerous, which is not conducive to practical production application

Method used

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  • Carbon cloth supported nickel sulfide-molybdenum sulfide heterogeneous nano-sheet array structure and preparation method thereof
  • Carbon cloth supported nickel sulfide-molybdenum sulfide heterogeneous nano-sheet array structure and preparation method thereof
  • Carbon cloth supported nickel sulfide-molybdenum sulfide heterogeneous nano-sheet array structure and preparation method thereof

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preparation example Construction

[0039] NiS-MoS supported by carbon cloth proposed by the present invention 2 The preparation method of the heterogeneous nanosheet array structure includes the following steps and contents in sequence:

[0040] (1) The carbon cloth is ultrasonically cleaned with acetone, 1-2 mol / L hydrochloric acid aqueous solution and deionized water for 0.5-1 hour in advance, and dried at 60°C, and stored for later use.

[0041] (2) Put commercially available analytically pure nickel acetate, ammonium molybdate, thiourea and sodium lauryl sulfate powder into a beaker, then add deionized water and stir to make it evenly mixed, and control the concentration of nickel acetate in the reactant mixed solution The concentration of ammonium molybdate is 0.001-0.005mol / L, the concentration of thiourea is 0.05-0.08mol / L, and the concentration of sodium lauryl sulfate is 0.15-0.25mol / L. Then use 0.5-1.0 mol / L sodium hydroxide aqueous solution to adjust the pH value of the reactant mixed solution to 5....

Embodiment 1

[0048] Example 1: A piece of carbon cloth with a size of 2.5×4cm was ultrasonically cleaned with acetone, 1mol / L hydrochloric acid aqueous solution and deionized water for 0.5 hours in advance, and dried at 60°C, and stored for later use.

[0049] In a 100mL beaker, add 0.224g nickel acetate, 0.074g ammonium molybdate, 0.137g thiourea and 1.73g sodium lauryl sulfate, then add 30mL deionized water and stir until the solution is clear; slowly drop 0.5mol / L sodium hydroxide aqueous solution adjusts the pH value of reactant mixed solution to 6.5; Then the reaction mixed solution is all transferred in the 40mL high-pressure hydrothermal reaction kettle, after the carbon cloth that cleans is vertically immersed in the solution, seal the reaction kettle; Then The reactor was moved to an electric furnace, heated to 180°C at a rate of 5°C / min and reacted for 9 hours.

[0050] After naturally cooling to room temperature, open the reactor, take out the carbon cloth and rinse it with dei...

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Abstract

The invention relates to a carbon cloth supported NiS-MoS2 heterogeneous nano-sheet array structure and a preparation method thereof and belongs to the technical field of preparation of nanometer materials. The composite material provided by the invention is an array-like NiS-MoS2 heterogeneous nano-sheet structure which uniformly grows on the surface of a conductive three-dimensional carbon fibercloth carrier and has a multistage three-dimensional frame structure, wherein the MoS2 is coated on the surface of NiS. The preparation method disclosed by the invention comprises the following steps: respectively taking nickel acetate, ammonium molybdate and thiourea as a nickel source, a molybdenum source and a sulfur source in a reactor, taking lauryl sodium sulfate as a surfactant, and directly growing to obtain the NiS-MoS2 heterogeneous nano-sheet array structure on the carbon cloth by a one-step hydrothermal process. The method has the advantages of being controllable in condition, simple in equipment process, high in yield, low in cost, environmental-friendly and the like. The prepared heterogeneous nano structure is high in product purity and controllable in morphology and composition. The nano structure material has wide application prospects in aspects such as electrochemical catalysis (hydrogen production and oxygen production), energy storage (super capacitors, lithium ion batteries) and the like.

Description

technical field [0001] The invention relates to a carbon cloth-supported nickel sulfide-molybdenum sulfide heterogeneous nanosheet array structure and a preparation method thereof, belonging to the technical field of nanomaterial preparation. Background technique [0002] Molybdenum sulfide (MoS 2 ), as a typical layered two-dimensional transition metal semiconductor material, has a graphene-like structure, and its unique physical and chemical properties make it have broad application prospects in optoelectronics, photoelectrocatalysis, and energy storage devices. However, single-component MoS 2 It is difficult for the material to fully exert its excellent performance. For example, MoS 2 The highly active sites of the catalytic hydrogen production reaction are distributed on the exposed Mo atoms at the edge of its sheet structure. The activity of these sites is close to that of the currently recognized best noble metal Pt catalyst, and it occupies a large area of ​​the ma...

Claims

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Application Information

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IPC IPC(8): D06M11/53C23C26/00H01G11/30H01M4/58B82Y30/00D06M101/40
CPCB82Y30/00C23C26/00D06M11/53D06M2101/40H01G11/30H01M4/5815Y02E60/10Y02E60/13
Inventor 符秀丽官顺东彭志坚
Owner BEIJING UNIV OF POSTS & TELECOMM
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