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Preparation method of dual-shell Fe2O3/NiS nanocomposite

A nano-composite material and double-shell technology, applied in the direction of electrodes, electrolytic processes, electrolytic components, etc., can solve unseen problems

Inactive Publication Date: 2019-01-08
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the above patents, most patents use various methods to prepare Fe 2 o 3 and its composites, no common hydrothermal method was used to prepare Fe 2 o 3 @NiS' core shell material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] (1) Accurately weigh a certain amount of FeCl 3 .6H 2 O was dissolved in 48ml of ethanol, magnetically stirred for 30min, the solution was transferred to a reaction kettle, reacted at 140°C for 4h, cooled to room temperature, separated from solid and liquid, washed repeatedly with deionized water until neutral, and dried in vacuum at 60°C for 12h to obtain Fe 2 o 3 ;

[0011] (2) Accurately weigh the product Fe of step (1) 2 o 3 and NiCl 2 ·6H 2 O, the mass ratio is 1:1, add 50ml deionized water, stir magnetically for 30min, then weigh a certain mass of urea and ammonium fluoride, continue stirring for 15min, then transfer the solution to the reaction kettle, react at 120°C for 5h, wait It was naturally cooled to room temperature, separated from solid and liquid, washed repeatedly with deionized water until neutral, and dried at 60°C for 12 hours to obtain the precursor;

[0012] (3) Accurately configure 50ml of 0.1mol / L Na 2 S aqueous solution is put into react...

Embodiment 2

[0013] Embodiment 2: change Fe in step (2) 2 o 3 and NiCl 2 ·6H 2 The mass ratio of O is 1: 2, and other steps are with embodiment 1, obtains the Fe of double-shell layer 2 o 3 @NiS nanocomposites.

Embodiment 3

[0014] Embodiment 3: change Fe in step (2) 2 o 3 and NiCl2 ·6H 2 The mass ratio of O is 1: 3, and other steps are with embodiment 1, promptly obtains the Fe of double shell. 2 o 3 @NiS nanocomposites.

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Abstract

The invention discloses a preparation method of a dual-shell Fe2O3 / NiS nanocomposite. The method specifically comprises the following steps: preparing Fe2O3 nanoparticles through the solvothermal method by using ferric chloride as ferric salt; preparing a Fe2O3@Ni(OH)2 core-shell material through the hydrothermal method by using Fe2O3 as a carrier and nickel salt as a metal salt; and preparing thedual-shell Fe2O3 / NiS nanocomposite through the hydrothermal method by using sodium sulfide as a sulfur source. The preparation method has the advantages of high simplicity and high easiness in operation; and the prepared dual-shell Fe2O3 / NiS nanocomposite achieves good hydrogen evolution performance.

Description

technical field [0001] The present invention relates to a double shell Fe 2 o 3 / NiS nanocomposites, specifically involving the preparation of Fe by a three-step universal hydrothermal method 2 o 3 / NiS nanocomposites. Background technique [0002] With the extensive use of limited fossil fuels, the energy crisis and environmental pollution are increasing, the development of renewable energy and various new energy sources has been highly valued by various countries, and hydrogen energy is one of the ideal green energy sources to replace fossil fuels in the future. With the advantages of abundant sources, renewable and storable, it is regarded as the most ideal energy carrier. However, although hydrogen is the most abundant element on earth, it is not in the form of free H 2 Therefore, the development of effective and sustainable hydrogen production technology is an important research content to promote the development of hydrogen energy. Among the current numerous hydr...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B11/04Y02E60/36
Inventor 曲玉宁魏丹谢慧娟倪梦婷胡炫
Owner TIANJIN POLYTECHNIC UNIV
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