High-performance micro-nano multilevel-structure MoS2 material and preparation method and application thereof

A high-performance, micro-nano technology, applied in the direction of structural parts, chemical instruments and methods, additives, etc., can solve the problems that have not been reported in the preparation research, and achieve the effects of shortening the adsorption time, improving the adsorption efficiency, and uniform particle size

Active Publication Date: 2016-05-25
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And about MoS 2 The preparation of microspheres, especially microspheres with multi-level hierarchical structure, has not been reported yet

Method used

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  • High-performance micro-nano multilevel-structure MoS2 material and preparation method and application thereof
  • High-performance micro-nano multilevel-structure MoS2 material and preparation method and application thereof
  • High-performance micro-nano multilevel-structure MoS2 material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Dissolve 1.236g of ammonium molybdate in 35ml of deionized water and stir until dissolved to obtain a transparent solution;

[0028] 2) Add 2.284g of thiourea to the above solution and stir for 10min until dissolved to obtain a mixed solution, then add 3g of PEG6000 and stir for 1h;

[0029] 3) Place the mixed solution obtained in the above 2) in an ultrasonic device, and ultrasonicate for 30 minutes at a power of 100w;

[0030] 4) Transfer the solution obtained in 3) to a 50ml hydrothermal reaction kettle, heat at 180°C for 24h, cool after the reaction, centrifuge the obtained black precipitate, wash three times with distilled water and absolute ethanol respectively, The obtained product was dried at 50°C to obtain MoS with micro-nano hierarchical structure 2 Powder.

[0031] The micro-nano hierarchical structure MoS prepared above 2 The X-ray diffraction pattern of the powder is as figure 1 As shown, its diffraction peaks are consistent with the standard spectr...

Embodiment 2

[0037] 1) Dissolve 2.56g of ammonium molybdate in 35ml of ethylene glycol and stir until dissolved to obtain a transparent solution;

[0038] 2) Add 1.84g of thiourea to the above solution and stir for 10min until dissolved to obtain a mixed solution, then add 1.2g of PEG6000 and stir for 1h;

[0039] 3) Place the mixed solution obtained in the above 2) in an ultrasonic device, and ultrasonicate for 1 hour at a power of 60w;

[0040] 4) Transfer the solution obtained in 3) to a 50ml hydrothermal reaction kettle, heat at 160°C for 24h, cool after the reaction, centrifuge the obtained black precipitate, wash three times with distilled water and absolute ethanol respectively, The obtained product was dried at 70°C to obtain MoS with micro-nano hierarchical structure 2 Powder.

[0041] The micro-nano hierarchical structure MoS prepared above 2 The X-ray diffraction pattern of the powder is as image 3 As shown, its diffraction peaks are consistent with the standard spectrum of...

Embodiment 3

[0047] 1) Dissolve 2.5g of sodium molybdate in 35ml of DMF and stir until dissolved to obtain a transparent solution;

[0048] 2) Add 5 g of thiourea to the above solution and stir for 10 min until dissolved to obtain a mixed solution, then add 1.2 g of PEG1500 and stir for 1 h;

[0049] 3) Place the mixed solution obtained in the above 2) in an ultrasonic device, and ultrasonicate for 15 minutes at a power of 80w;

[0050] 4) Transfer the solution obtained in 3) to a 50ml hydrothermal reaction kettle, heat at 200°C for 18h, cool after the reaction, centrifuge the obtained black precipitate, wash with distilled water and absolute ethanol three times respectively, The obtained product was dried at 50°C to obtain MoS with micro-nano hierarchical structure 2 Powder.

[0051] The micro-nano hierarchical structure MoS prepared above 2 The average particle size of powder microspheres is about 3.5 μm, MoS 2 The BET test results of the powder are as follows Figure 4 As shown, Mo...

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Abstract

The invention relates to the technical field of nano material preparation and energy environmental protection, in particular to high-performance micro-nano multilevel-structure MoS2 material and a preparation method thereof. The preparation method is characterized in that nonionic surfactant polyglycol is introduced to allow MoS2 super-thin nano sheets generated by reaction to self-assemble into nano-sphere units, the nano-sphere units further assemble to form microspheres with a micro-nano multilevel structure, the microspheres are 2-10 micrometers in diameter, the nano-spheres are 50-200 nanometers in diameter, the nano sheets are 100-300 nanometers in length, 100-300 nanometers in width and 2-50 nanometers in thickness, the nano-sphere units interweave to form the microspheres, and the specific surface area of the microspheres is 10-100m<2> / g. The MoS2 material can bring the advantages of high activity and high efficiency of nano units into play. The preparation method completed in one step under a hydrothermal condition is simple in process, low in energy consumption and cost, short in preparation cycle, environmental friendly, beneficial to engineering large-scale preparation and application, and the like.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation technology and application, in particular to a high-performance micro-nano multi-level structure MoS 2 Powder preparation method. Background technique [0002] Two-dimensional transition metal sulfides have a graphene-like structure, and their unique electronic and optical properties make them have great application prospects in the fields of lithium-ion batteries, supercapacitors, photocatalytic hydrogen production, and catalytic hydrogenation. research hotspot. Therefore, preparation research to prepare MoS with high performance 2 Powder has important research significance. [0003] The micro-nano multi-level structure is a high-dimensional complex structure with a specific geometric shape assembled by low-dimensional nano-unit materials. This type of structure not only retains the high performance of nanoparticles, but also has the easy separation of large-sized particles. and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B01J20/02C25B1/04H01M4/58C10M125/22C10M169/04C10N30/06
CPCB01J20/0218C01G39/06C01P2002/72C01P2004/03C01P2004/61C01P2006/12C01P2006/40C10M125/22C10M169/04C10M2201/066C10M2209/1003C10N2030/06C25B1/04H01M4/5815Y02E60/10Y02E60/36
Inventor 乔秀清李东升赵君侯东芳吴亚盘董文文
Owner CHINA THREE GORGES UNIV
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