Method for preparing nickel molybdate and graphene nanocomposite
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A nanocomposite material and graphene technology, which is applied in the field of preparation of nickel molybdate and graphene nanocomposite materials, can solve the problems of imbalance and non-renewability of the global climate system, achieve low cost, inhibit agglomeration, and solve difficult large-scale applications Effect
Inactive Publication Date: 2014-05-07
DONGHUA UNIV
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These fuels are not only non-renewable, but also emit a large amount of harmful gases during the ...
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Embodiment 1
[0024] (1) Disperse 10mg graphene oxide in 5ml deionized water, ultrasonic for 4h;
[0025] (2) Add NiCl to the graphene oxide solution after ultrasonication 2 ·6H 2 O2mmol and deionized water 40ml, stirred for 30min;
[0026] (3) Add Na to the above solution 2 MoO 4 2H 2 O2mmol, continue to stir for 5h; then move into a 50ml polytetrafluoroethylene reactor, and react at 120°C for 8h;
[0027] (4) After the reaction, cool to room temperature, centrifuge the obtained product, wash with deionized water and ethanol solvent respectively, and dry.
Embodiment 2
[0029] (1) Disperse 10mg graphene oxide in 5ml deionized water, ultrasonic for 4h;
[0030] (2) Add NiCl to the graphene oxide solution after ultrasonication 2 ·6H 2 O2mmol and deionized water 40ml, stirred for 30min;
[0031] (3) Add Na to the above solution 2 MoO 4 2H 2 O2mmol, continue to stir for 5h; then move into a 50ml polytetrafluoroethylene reactor, and react at 150°C for 10h;
[0032] (4) After the reaction, cool to room temperature, centrifuge the obtained product, wash with deionized water and ethanol solvent respectively, and dry.
Embodiment 3
[0034] (1) Disperse 30mg graphene oxide in 5ml deionized water, ultrasonic for 4h;
[0035] (2) Add NiCl to the graphene oxide solution after ultrasonication 2 ·6H 2 O2mmol and deionized water 40ml, stirred for 30min;
[0036] (3) Add Na to the above solution 2 MoO 4 2H 2 O2mmol, continued to stir for 5h; then moved into a 50ml polytetrafluoroethylene reactor and reacted at 180°C for 15h.
[0037] (4) After the reaction, cool to room temperature, centrifuge the obtained product, wash with deionized water and ethanol solvent respectively, and dry.
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Abstract
The invention relates to a method for preparing nickel molybdate and graphene nanocomposite. The method includes the first step of dispersing oxidized graphene into deionized water and then carrying out ultrasonic processing, the second step of adding Nickel(II) chloride hexahydrate and the deionized water into oxidized graphene solution subjected to ultrasonic processing and stirring the solution, the third step of adding sodium molybdate dehydrate into the oxidized graphene solution subjected to ultrasonic processing, continuing stirring the solution and then adding the solution into a reaction still to carry out reaction for eight hours to fifteen hours at the temperature ranging from 120 DEG C to 180 DEG C, and the fourth step of carrying out cooling to the normal temperature and carrying out centrifugal processing after reaction is completed, utilizing the deionized water and ethanol solvents to wash products obtained through centrifugal processing and then drying the products to obtain the nickel molybdate and graphene nanocomposite. The method has the advantages of being easy to operate, friendly to environment, low in cost and applicable to large-scale industrial production.
Description
technical field [0001] The invention belongs to the field of supercapacitor electrode materials, in particular to a preparation method of a nickel molybdate and graphene nanocomposite material. Background technique [0002] Energy is the cornerstone of social development. Since the beginning of the new century, the energy crisis has become the most severe challenge for human survival and development. Up to now, more than 85% of the world's energy consumption comes from fossil fuels such as coal, oil, and natural gas. These fuels are not only non-renewable, but also emit large amounts of harmful gases, especially carbon dioxide, during the combustion process, causing the global climate system to become unbalanced. In addition, as the world's population grows year by year, human beings' demand for energy will increase, which will be difficult to meet through the combustion of a single fossil fuel. The development of new, sustainable and environmentally friendly new energy sys...
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