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High nitrogen doped graphene and fullerene-like molybdenum selenide hollow-ball nanocomposite and preparation method thereof

A technology of nanocomposite materials and nitrogen-doped graphene, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve problems such as difficulties, few studies on heterogeneous atom doping, few studies, etc., and achieve simple operation , cheap experimental equipment, and controllable reaction conditions

Inactive Publication Date: 2014-12-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the defects and shortcomings of the above-mentioned prior art are: (1) compared with MoS 2 , for MoSe 2 There are very few studies, especially the liquid-phase synthesis of high-quality MoSe 2 This is also a big difficulty
(2) For MX 2 The research mainly focuses on nanosheets, but there are few related studies on other structures such as nanospheres, especially hollow spheres; (3) For this kind of nanocomposite materials, the further functionalization of graphene, such as the relative research of heteroatom doping rare;

Method used

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  • High nitrogen doped graphene and fullerene-like molybdenum selenide hollow-ball nanocomposite and preparation method thereof
  • High nitrogen doped graphene and fullerene-like molybdenum selenide hollow-ball nanocomposite and preparation method thereof
  • High nitrogen doped graphene and fullerene-like molybdenum selenide hollow-ball nanocomposite and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] 1) Preparation of low-nitrogen-doped graphene: Disperse 500 mg of graphene oxide (produced by the Hummers method) into 100 mL of aqueous solution, stir and sonicate to disperse evenly; then add 5 mL of NH to the dispersion 3 ·H 2 O (20%), stirring and heating to 90 ° C, through a chemical reaction for 2 hours, to obtain rough low-nitrogen graphene; finally, obtain high-quality low-nitrogen graphene through dialysis.

[0032] 2) Preparation of chemical reaction solution: 0.2 mmol of ammonium molybdate tetrahydrate, i.e. (NH 4 ) 6 Mo 7 o 24 4H 2 O and 3mmol of Na 2 SeO 3 dissolved in 15mL H 2 In the mixed solution that O and 15mL ethylene glycol form, stir 15 minutes;

[0033] Add 5 mL of diethylenetriamine (DETA) stabilizer to the above solution, stir for 15 minutes; get 5 low-nitrogen-doped graphene and add to the above solution, stir and sonicate for 30 minutes;

[0034] 3) Preparation of high-nitrogen-doped graphene and fullerene-like molybdenum selenide holl...

Embodiment 2

[0036] 1) Preparation of low-nitrogen-doped graphene: Disperse 500 mg of graphene oxide (produced by the Hummers method) into 100 mL of aqueous solution, stir and sonicate to disperse evenly; then add 10 mL of NH to the dispersion 3 ·H 2 O (20%), stirring and heating to 90 ° C, through a chemical reaction for 10 hours, to obtain rough low-nitrogen graphene; finally, obtain high-quality low-nitrogen graphene through dialysis.

[0037] 2) Preparation of chemical reaction solution: 0.5 mmol of ammonium molybdate tetrahydrate, i.e. (NH 4 ) 6 Mo 7 o 24 4H 2 O and 10mmol of Na 2 SeO 3 dissolved in 15mL H 2 In a mixed solution composed of O and 15mL ethylene glycol, stir for 15 minutes;

[0038] Add 15 mL of diethylenetriamine (DETA) stabilizer to the above solution, stir for 15 minutes; take 15 mL of low-nitrogen-doped graphene and add it to the above solution, stir and sonicate for 30 minutes;

[0039] 3) Preparation of high-nitrogen-doped graphene and fullerene-like molyb...

Embodiment 3

[0041] 1) Preparation of low-nitrogen-doped graphene: Disperse 500 mg of graphene oxide (produced by the Hummers method) into 100 mL of aqueous solution, stir and sonicate to disperse evenly; then add 15 mL of NH to the dispersion 3 ·H 2 O (20%), stirring and heating to 90 ° C, through a chemical reaction for 10 hours, to obtain rough low-nitrogen graphene; finally, obtain high-quality low-nitrogen graphene through dialysis.

[0042] 2) Preparation of chemical reaction solution: 1.5mmol of ammonium molybdate tetrahydrate, i.e. (NH 4 ) 6 Mo 7 o 24 4H 2 O and 15mmol of Na 2 SeO 3 dissolved in 15mL H 2 In a mixed solution composed of O and 15mL ethylene glycol, stir for 15 minutes;

[0043] Add 25mL of diethylenetriamine (DETA) stabilizer to the above solution, stir for 15 minutes; take 20mL of low-nitrogen-doped graphene and add to the above solution, stir and sonicate for 30 minutes;

[0044] 3) Preparation of high-nitrogen-doped graphene and fullerene-like molybdenum ...

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Abstract

The invention relates to a high nitrogen doped graphene and fullerene-like molybdenum selenide hollow-ball nanocomposite and a preparation method thereof. The preparation method comprises the following steps: after a molybdenum source and a selenium source dissolving in water and ethylene glycol and low nitrogen doped graphene are fully mixed, solvothermal reaction is carried out under the action of diethylenetriamine as an active agent, so that fullerene-like MoSe2 hollow balls uniformly grow on the graphene and the low nitrogen doped graphene is deeply doped to obtain the high nitrogen doped graphene and fullerene-like MoSe2 hollow-ball nanocomposite. The nanocomposite is obtained through the method of solvothermal in-situ growth. The method is easy to operate and low in cost and can be effectively applied to the fields of photocatalysis, solar batteries and supercapacitors.

Description

technical field [0001] The invention relates to a composite material in the technical field of nanomaterial preparation and its preparation, in particular to a high nitrogen-doped graphene and fullerene-like molybdenum selenide hollow sphere nanocomposite material and a preparation method thereof. Background technique [0002] Nanocomposites can concentrate the excellent properties of individual materials. Based on this idea, the rational design of the structure and morphology of materials has an important impact on the performance and application of nanomaterials. More importantly, the uniform distribution of nanomaterials is important for It is of great significance in the fields of energy environment, such as solar cells, photocatalysis, supercapacitors, etc., so the control and synthesis of nanocomposites are getting more and more attention. [0003] Transition metal sulfur, selenide MX 2 (M=Mo, W, Nb, Ta; X=S, Se) have aroused interest because of their layered structur...

Claims

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Application Information

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IPC IPC(8): B01J27/24H01M4/36H01G11/30B82Y30/00B82Y40/00
CPCY02E60/10Y02E60/13
Inventor 毕恩兵陈汉韩礼元
Owner SHANGHAI JIAO TONG UNIV
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