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Spherical molybdenum disulfide/copper sulfide nanometer composite material and preparation method thereof

A technology of nanocomposite materials and molybdenum disulfide, which is applied in the field of nanomaterials, can solve the problems that the morphology cannot be adjusted and the steps are cumbersome, and achieve the effects of good catalytic activity, good crystallinity and strong current density

Active Publication Date: 2020-02-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steps of the above-mentioned preparation methods are relatively cumbersome, and the prepared molybdenum disulfide / copper sulfide composites are all petal-shaped microspheres, and their morphology cannot be controlled.

Method used

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  • Spherical molybdenum disulfide/copper sulfide nanometer composite material and preparation method thereof
  • Spherical molybdenum disulfide/copper sulfide nanometer composite material and preparation method thereof
  • Spherical molybdenum disulfide/copper sulfide nanometer composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0043] (1) After centrifuging 12 mL of copper nanowire n-hexane dispersion (10 mg / mL) for 5 min (8000 rpm), suck the supernatant with a dropper, add 35 mL of ethanol, shake for 1 min to make it evenly dispersed, and then Centrifuge the solution for 5min (8000 rpm) to fully remove n-hexane, decant, repeat the above centrifugation-decantation steps two to three times, add 120mL ethanol, shake to make it fully dispersed into copper nanowire ethanol solution (1mg / mL);

[0044](2) Take 2mL of copper nanowire ethanol solution (1mg / mL), sonicate for 1min, 3min, 5min, and 10min respectively, and take samples for scanning electron microscopy. The results are shown in figure 2 , it can be seen that when the ultrasound is 5 minutes, the copper nanowires are uniformly dispersed and not destroyed, therefore, 5 minutes is selected as the best ultrasonic time for copper nanowires;

[0045] (3) The total volume of the reaction system was controlled to be constant. For each group of experim...

Embodiment 2

[0060] (1) The total volume of the reaction system was controlled to be constant. For each group of experiments, the ethanol dispersion of copper nanowires was kept at 20 mL, the ethanol solution of thiourea was 2 mL, and the aqueous solution of ammonium molybdate was 2 mL. Control the concentration of copper nanowires to be 1.0, 0.7, 0.5, 0.3 mg / mL, the mass of thiourea to be 0.04, 0.02 g, and the mass ratio of thiourea to ammonium molybdate to be 1:1, 1.5:1, 2:1, Combination with each other, see Table 2 for detailed combination;

[0061] (2) Add ethanol solutions of thiourea with different masses and concentrations to copper nanowire ethanol dispersions of different masses and concentrations, and ultrasonically disperse for 3 minutes;

[0062] (3) Add aqueous solutions of thiourea with different masses and concentrations to the dispersion in (2), and disperse by ultrasonication for 2 minutes;

[0063] (4) Transfer the above solution to a polytetrafluoroethylene-lined stainl...

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Abstract

The invention discloses a spherical molybdenum disulfide / copper sulfide nanometer composite material and a preparation method thereof, and belongs to the technical field of nanometer materials. According to the invention, in a preparation process, a multilayer hierarchical spherical and solid spherical molybdenum disulfide / copper sulfide nanometer composite material is prepared by changing a massratio of a thiourea solvent to copper nano-wires, thiourea and an ammonium molybdate precursor through a simple and efficient one-step solvothermal method, and is applied to catalysis of carbon dioxide; and the preparation process of the spherical molybdenum disulfide / copper sulfide nanometer composite material can be simplified, and the performance of the composite material in catalytic application is further improved.

Description

technical field [0001] The invention relates to a spherical molybdenum disulfide / copper sulfide nanocomposite material and a preparation method thereof, in particular to a multilayer graded spherical and solid spherical molybdenum disulfide / copper sulfide nanocomposite material and a preparation method thereof, belonging to the technical field of nanomaterials. Background technique [0002] Molybdenum disulfide has excellent carrier mobility (200cm 2 ·V -1 ·S -1 ), high current switching ratio (>10 8 ) and stable chemical properties. Compared with graphene with a band gap of 0, the direct band gap of a single layer of molybdenum disulfide can reach 1.8eV, so molybdenum disulfide is more suitable for building various semiconductor devices, and has become a One of the recent research hotspots. At present, molybdenum disulfide has been widely used in nano-devices such as integrated circuits and biosensors, and has broad application prospects. [0003] In recent years, m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J35/08C01B32/40
CPCB01J27/0515C01B32/40B01J35/33
Inventor 洪流刘芳格朱海标杨成
Owner JIANGNAN UNIV
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