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Preparation method for molybdenum disulfide-sepiolite nanofiber composite materials

A technology of nanofibers and molybdenum disulfide, applied in chemical instruments and methods, alkali metal compounds, inorganic chemistry, etc., can solve the problems of complex preparation process, long reaction cycle, high cost, etc., achieve good dispersion, improve shape, Reduce the effect of agglomeration

Inactive Publication Date: 2018-09-14
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a preparation method of molybdenum disulfide-sepiolite nanofiber composite material, which uses molybdate, sulfide and sepiolite nanofibers as raw materials, and prepares molybdenum disulfide by microwave hydrothermal method. The molybdenum-sepiolite nanofiber composite material overcomes the existing technology of molybdenum disulfide composite material preparation. The molybdenum disulfide composite material is easy to re-agglomerate or stack during the drying or annealing process, and the preparation process is complicated, the reaction cycle is long, and the energy consumption is low. High and costly defects

Method used

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  • Preparation method for molybdenum disulfide-sepiolite nanofiber composite materials

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The first step, the preparation of reactant raw material mixture:

[0045] Weigh 1mmol of ammonium molybdate, 10mmol of thioacetamide and 0.1g of sepiolite nanofibers, first dissolve the ammonium molybdate in 35mL of deionized water, stir until the ammonium molybdate is completely dissolved, and then dissolve the weighed Thioacetamide was dissolved in the above ammonium molybdate solution, stirred magnetically at room temperature for 20 minutes, and after the mixed solution was uniform and transparent, added the weighed sepiolite nanofibers, stirred magnetically at room temperature for 30 minutes, and then ultrasonicated 10min, complete the preparation of reactant raw material mixture;

[0046] In the second step, the microwave hydrothermal method of the reactants is effectively compounded:

[0047] Pour the reactant raw material mixture prepared in the first step above into a polytetrafluoroethylene reaction kettle with a volume of 50mL, and the filling degree is 50%,...

Embodiment 2

[0051] The first step, the preparation of reactant raw material mixture:

[0052] Weigh 10mmol of magnesium molybdate, 80mmol of thiourea, and 1.0g of sepiolite nanofibers, first dissolve the magnesium molybdate in 100mL of deionized water, stir until the magnesium molybdate is completely dissolved, and then dissolve the weighed thiourea Dissolve in the above-mentioned magnesium molybdate solution, stir magnetically at room temperature for 35 minutes, and when the mixed solution is uniform and transparent, add the weighed sepiolite nanofibers, stir magnetically at room temperature for 45 minutes, and then ultrasonicate for 20 minutes to complete the reaction Preparation of raw material mixture;

[0053] In the second step, the microwave hydrothermal method of the reactants is effectively compounded:

[0054] Pour the reactant raw material mixture prepared in the first step above into a polytetrafluoroethylene reactor with a volume of 150 mL, and the filling degree is 60%, and...

Embodiment 3

[0058] The first step, the preparation of reactant raw material mixture:

[0059] Weigh 20mmol of alkali metal molybdate, 150mmol of L-cysteine ​​and 2.0g of sepiolite nanofibers, first dissolve the alkali metal molybdate in 175mL of deionized water, and stir until the alkali metal molybdate is completely dissolved , then dissolve the weighed L-cysteine ​​in the above-mentioned alkali metal molybdate solution, and stir magnetically at room temperature for 50 minutes. After the mixed solution is uniform and transparent, the weighed sepiolite nanofiber Add, magnetically stir at room temperature for 60 minutes, and then ultrasonic for 30 minutes to complete the preparation of the reactant raw material mixture;

[0060] In the second step, the microwave hydrothermal method of the reactants is effectively compounded:

[0061] Pour the reactant raw material mixture prepared in the first step above into a polytetrafluoroethylene reactor with a volume of 250mL, and the filling degree...

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Abstract

The invention discloses a preparation method for molybdenum disulfide-sepiolite nanofiber composite materials, and relates to composite materials. The preparation method based on a microwave hydrothermal process includes preparing a reactant stock mixed liquor of molybdate, sulfides and sepiolite nanofibers; pouring the reactant stock mixed liquor into a polytetrafluoroethylene reaction kettle, and putting the reaction kettle in microwave hydrothermal equipment to complete microwave-hydrothermal-process based effective compounding of reactants; cleaning and drying products obtained by the microwave hydrothermal process to obtain the molybdenum disulfide-sepiolite nanofiber composite materials. The preparation method has the advantages that the defects of the prior art for preparing molybdenum disulfide composite materials, including proneness to re-gathering or stacking of the molybdenum disulfide composite materials during drying or annealing, complexity in preparation process, long reaction period, high energy consumption and high cost, are overcome.

Description

technical field [0001] The technical solution of the invention relates to composite materials, specifically a method for preparing molybdenum disulfide-sepiolite nanofiber composite materials. Background technique [0002] Molybdenum disulfide is a typical layered transition metal sulfide. Every two layers of sulfur atoms sandwich a layer of molybdenum atoms, forming a typical sandwich structure. The molybdenum atom and the sulfur atom are covalently bonded, adjacent The two molecular layers are connected by relatively weak van der Waals force, and the intralayer interaction is strong while the interlayer interaction is relatively weak. Due to this special layered structure, molybdenum disulfide has good catalytic, lubricating and photoelectric properties, and is widely used in lithium-ion battery electrodes, photocatalysis, solid lubrication, sensors and field effect transistors. [0003] Molybdenum disulfide has high reactivity due to the unsaturation at the edge of its s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J20/12B01J20/28B01J20/30
CPCB01J20/0218B01J20/0285B01J20/12B01J20/28023B01J27/051B01J35/58
Inventor 王菲朱毛毛梁金生汤庆国崔丽
Owner HEBEI UNIV OF TECH
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