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Preparation method for nickel phosphide-nitrogen doped graphite oxide foil composite nano material

A composite nanomaterial, graphite foil technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as poor electrocatalytic hydrogen evolution catalytic effect, poor catalytic process stability, and complex experimental process. , to achieve the effects of good product stability, good product uniformity, and easy availability of raw materials

Inactive Publication Date: 2018-09-18
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although there are many methods, there are still some shortcomings, which mainly include the complicated experimental process, difficulty in large-scale production, low product yield, poor flexibility of the obtained product, poor catalytic effect on electrocatalytic hydrogen evolution, and poor stability of the catalytic process. The electrocatalytic hydrogen evolution performance of the currently obtained molybdenum disulfide composites still needs to be improved

Method used

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  • Preparation method for nickel phosphide-nitrogen doped graphite oxide foil composite nano material
  • Preparation method for nickel phosphide-nitrogen doped graphite oxide foil composite nano material
  • Preparation method for nickel phosphide-nitrogen doped graphite oxide foil composite nano material

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Use a ruler to cut 4 pieces of 3cm*5cm (weighing about 0.6g) GF into 25ml 65% HNO 3 And 25mL98%H 2 SO 4 Soaked in the mixed solution for 36h, and heated to 80 ℃ with microwave, microwave power is 300W, after the reaction, the soaked graphite oxide foil is taken out, washed with deionized water and absolute ethanol for several times, and then placed in a freeze drying oven for drying , The freeze drying temperature is -50°C, the vacuum degree is 30 Pa, and the drying time is 30 hours.

[0036] Weigh ammonium fluoride (0.222g), thiourea (0.54g), nickel nitrate (0.29g), water (40mL) and dissolve in 40ml deionized water. After stirring for 30min, a uniform and transparent solution is obtained. Pour the mixed solution Add 0.2g graphite oxide foil to a 50ml reaction kettle, fix the graphite oxide foil in the middle of the reaction kettle with a glass slide in an inclined manner, pass nitrogen to remove oxygen in the reaction solution, and pass nitrogen during the reaction Prote...

Embodiment 2

[0044] Use a ruler to cut 4 pieces of 3cm*5cm (weighing about 0.6g) GF into 25ml 65% HNO 3 And 25mL98% H 2 SO 4 Soak in the mixed solution for 12h, and use microwave to heat to 80℃, microwave power is 300W, after the reaction, take out the soaked graphite oxide foil, wash it with deionized water and absolute ethanol for several times, and put it into a freeze drying oven for drying The freeze-drying temperature is -52°C, the vacuum degree is 50 Pa, and the drying time is 36 hours.

[0045] Weigh ammonium fluoride (0.222g), thiourea (0.54g), nickel nitrate (0.29g), water (40mL) and dissolve in 40ml deionized water. After stirring for 30min, a uniform and transparent solution is obtained. Pour the mixed solution Add 0.2g graphite oxide foil to a 50ml reaction kettle, fix the graphite oxide foil in the middle of the reaction kettle with a glass slide in an inclined manner, pass nitrogen to remove oxygen in the reaction solution, and pass nitrogen during the reaction Protected, nitr...

Embodiment 3

[0049] Use a ruler to cut 4 pieces of 3cm*5cm (weighing about 0.6g) GF into 25ml 65% HNO 3 And 25mL98%H 2 SO 4 Soak in the mixed solution for 48h, and use microwave to heat to 80℃, microwave power is 300W, after the reaction, take out the soaked graphite oxide foil, wash it with deionized water and absolute ethanol for several times, and put it into a freeze drying oven for drying , The freeze-drying temperature is -48°C, the vacuum degree is 10 Pa, and the drying time is 36 hours.

[0050] Weigh ammonium fluoride (0.222g), thiourea (0.54g), nickel nitrate (0.29g), water (40mL) and dissolve in 40ml deionized water. After stirring for 30min, a uniform and transparent solution is obtained. Pour the mixed solution Add 0.2g graphite oxide foil to a 50ml reaction kettle, fix the graphite oxide foil in the middle of the reaction kettle with a glass slide in an inclined manner, pass nitrogen to remove oxygen in the reaction solution, and pass nitrogen during the reaction Protected, nit...

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Abstract

The invention discloses a preparation method for a nickel phosphide-nitrogen doped graphite oxide foil composite nano material. Graphite foil, HNO3, H2SO4, ammonium fluoride, thiourea, nickel nitrateand ultrapure water are used as raw materials; and the method is realized by the following steps: graphite oxide foil doped by nitrogen and sulfur atoms is prepared; a hydrothermal synthesis reactionis performed; and washing is performed, and drying is performed. The method disclosed by the invention adopts a hydrothermal method as a preparation process, the raw materials are simple and easy to obtain, the composite material is obtained through the hydrothermal and phosphating processes, the experiment process is simple, the operation is convenient, the large-scale production is easy to realize, and the product can be recovered by 100% during use; the obtained nickel phosphide-nitrogen doped graphite oxide foil has excellent flexibility, a nitrogen element is not only doped on the graphite foil, but also can enter crystal lattices of nickel phosphide, the composite nano material has a very good catalytic effect on electrocatalytic hydrogen evolution, and in the catalytic process, theproduct has good stability and good product uniformity; and in addition, the material is expected to have a good application in aspects of flexible batteries, flexible sensors and the like.

Description

Technical field [0001] The invention belongs to the technical field of inorganic nano materials and energy development and storage, and specifically relates to a preparation method of a nickel phosphide-nitrogen doped graphite oxide foil composite nano material. Background technique [0002] With the rapid population expansion and rapid industrial development, energy issues have become the primary issue affecting human production and life. In order to solve the global energy shortage problem, the electrochemical decomposition of water to produce hydrogen has attracted more and more attention. Precious metals such as platinum (Pt) and its alloys have become the most commonly used electrocatalytic hydrogen production catalysts due to their low potential and high electrochemical stability in acidic solutions. However, it has the disadvantages of high cost and scarce resources, which hinders its practical application. Therefore, the research of high-performance and cost-effective n...

Claims

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Application Information

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IPC IPC(8): B01J27/24C25B1/04C25B11/04
CPCB01J27/24C25B1/04C25B11/051Y02E60/36
Inventor 陈文波刘碧桃彭玲玲夏继宏申凤娟李晨梁国昌李陈冉红梅朱洪
Owner CHONGQING UNIV OF ARTS & SCI
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