Method for preparing nanometer Ni-Fe alloy by adopting quaternary ionic liquid microemulsion

A technology of ionic liquids and microemulsions, applied in the direction of nanotechnology, can solve problems such as poor conductivity and difficult electrochemical research, and achieve the effects of improving conductivity, improving electrodeposition efficiency, and improving catalytic performance

Inactive Publication Date: 2018-07-10
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductivity of the general microemulsion system is extremely poor, and it is difficult to be used for electrochemical research.

Method used

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  • Method for preparing nanometer Ni-Fe alloy by adopting quaternary ionic liquid microemulsion
  • Method for preparing nanometer Ni-Fe alloy by adopting quaternary ionic liquid microemulsion
  • Method for preparing nanometer Ni-Fe alloy by adopting quaternary ionic liquid microemulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Preparation of quaternary ionic liquid microemulsion

[0031] After ultrasonically mixing the raw materials composed of the following mass percentages, sulfuric acid was added to control the pH value of the system to 3 to obtain a quaternary ionic liquid microemulsion:

[0032]

[0033] The above dissolved NiSO 4 and FeSO 4 NiSO in aqueous solution 4 and FeSO 4 The concentration is 0.075mol / L, that is, the NiSO in the water phase 4 and FeSO 4 The molar ratio is 5:5.

[0034] 2. Electrodeposition of nano-Ni-Fe alloy

[0035] After the copper sheet is polished, it is ultrasonically cleaned with dilute sulfuric acid, ethanol, and twice distilled water for 5 minutes. The copper sheet after cleaning is used as the working electrode, and two platinum electrodes are respectively used as the counter electrode and the reference electrode, and are put into the quaternary ionic liquid microemulsion prepared in step 1, and the deposition potential is controlled to be -...

Embodiment 2

[0037] In this example, after ultrasonically mixing the raw materials composed of the following mass percentages, sulfuric acid was added to control the pH value of the system to 3, and a quaternary ionic liquid microemulsion was obtained:

[0038]

[0039] The above dissolved NiSO 4 and FeSO 4 NiSO in aqueous solution 4 and FeSO 4 The concentration is 0.075mol / L, that is, the NiSO in the water phase 4 and FeSO 4 The molar ratio is 5:5.

[0040] Other steps are identical with embodiment 1, deposit one deck nano-Ni-Fe alloy on copper sheet, the particle diameter of nano-Ni-Fe alloy is 50nm (see Figure 4 ).

Embodiment 3

[0042] In this example, after ultrasonically mixing the raw materials composed of the following mass percentages, sulfuric acid was added to control the pH value of the system to 3, and a quaternary ionic liquid microemulsion was obtained:

[0043]

[0044] The above dissolved NiSO 4 and FeSO 4 NiSO in aqueous solution 4 and FeSO 4 The concentration is 0.075mol / L, that is, the NiSO in the water phase 4 and FeSO 4 The molar ratio is 5:5.

[0045] Other steps are identical with embodiment 1, deposit one deck nano-Ni-Fe alloy on copper sheet, the particle diameter of nano-Ni-Fe alloy is 20nm (see Figure 5 ).

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Abstract

The invention discloses a method for preparing nanometer Ni-Fe alloy through tetrabasic ionic liquid micro-emulsion. According to the method, methylbenzene is adopted as the oil phase, TX-100 is adopted as surface active agents, 1-butyl-3-methylimidazole hexafluorophosphate is adopted as auxiliary surface active agents, aqueous solutions with NiSO4 and FeSO4 dissolved are adopted as the aqueous phase, the tetrabasic ionic liquid micro-emulsion with high electrical conductivity is prepared, and finally the nanometer Ni-Fe alloy is prepared with the micro-emulsion as electrolytes through the electro-deposition method. According to the method, the 1-butyl-3-methylimidazole hexafluorophosphate is added into the micro-emulsion, the electrical conductivity of the micro-emulsion is improved, and therefore the electro-deposition efficiency is improved; in addition, the 1-butyl-3-methylimidazole hexafluorophosphate serves as the auxiliary surface active agents for participating in formation of micro micelles and serves as soft templates for preventing aggregation of nanometer particles, the size of a micro-reactor can be effectively controlled, then the size of the Ni-Fe alloy can be controlled, the catalysis specific area can be effectively increased, and the catalytic performance of the 1-butyl-3-methylimidazole hexafluorophosphate serving as a water anode catalyst solution can be improved.

Description

technical field [0001] The invention relates to a method for preparing nanometer Ni-Fe alloy by electrodeposition in a quaternary ionic liquid microemulsion system. Background technique [0002] Due to their unique physical and chemical properties, metal nanoparticles are widely used in catalysis, biomarkers, optics, optoelectronics and other fields. The shape, composition, and size of nanoparticles are key factors affecting their properties and application potential. Therefore, the synthesis of nanoparticles with specific sizes and shapes has attracted much attention. [0003] At present, there are many methods for preparing uniform and dispersed fine nanometer single metal particles and alloys, and the microemulsion method is one of the commonly used methods. Microemulsion is a thermodynamically stable, isotropic and transparent dispersion liquid produced by two immiscible liquids under the action of surfactant molecular interface film. According to the ratio of oil to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/56C22C33/00C22C1/00B82Y40/00
CPCB82Y40/00C22C1/00C22C33/00C25D3/562
Inventor 王增林吴海燕常春
Owner SHAANXI NORMAL UNIV
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