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Method for preparing Ni-Fe hydroxide nanometer films through electrodeposition

A technology of hydroxide and nano-film, applied in the direction of nano-technology, electrolytic inorganic material coating, etc., can solve the problems of difficult electrochemical research and poor conductivity, so as to improve the efficiency of electrodeposition, improve the conductivity, and increase the catalytic specific surface area Effect

Inactive Publication Date: 2016-06-29
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 Ni-Fe hydroxide nanometer films through electrodeposition
  • Method for preparing Ni-Fe hydroxide nanometer films through electrodeposition
  • Method for preparing Ni-Fe hydroxide nanometer films through electrodeposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Preparation of inverse quaternary ionic liquid microemulsion

[0034] The raw materials composed of the following mass percentages were ultrasonically mixed to prepare an inverse quaternary ionic liquid microemulsion:

[0035]

[0036] The above dissolved Ni(NO 3 ) 2 and Fe(NO 3 ) 3 Ni(NO 3 ) 2 and Fe(NO 3 ) 3 The concentration is 0.75mol / L, that is, the Ni(NO 3 ) 2 and Fe(NO 3 ) 3 The molar ratio is 5:5.

[0037] 2. Electrodeposition of Ni-Fe hydroxide nano film

[0038] 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 used as the counter electrode and the reference electrode respectively, and are put into the reverse phase quaternary ionic liquid microemulsion prepared in step 1, and the deposition potential is controlled to be -1.5V, and the deposition time is ...

Embodiment 2

[0040] In this example, the raw materials composed of the following mass percentages were ultrasonically mixed uniformly to prepare a reversed-phase quaternary ionic liquid microemulsion:

[0041]

[0042] The above dissolved Ni(NO 3 ) 2 and Fe(NO 3 ) 3 Ni(NO 3 ) 2 and Fe(NO 3 ) 3The concentration is 0.75mol / L, that is, the Ni(NO 3 ) 2 and Fe(NO 3 ) 3 The molar ratio is 5:5.

[0043] Other steps are identical with embodiment 1, deposit one deck Ni-Fe hydroxide nano film on copper sheet, the particle diameter of Ni-Fe hydroxide is 25nm (see Figure 4 ).

Embodiment 3

[0045] In this example, the raw materials composed of the following mass percentages were ultrasonically mixed uniformly to prepare a reversed-phase quaternary ionic liquid microemulsion:

[0046]

[0047] The above dissolved Ni(NO 3 ) 2 and Fe(NO 3 ) 3 Ni(NO 3 ) 2 and Fe(NO 3 ) 3 The concentration is 0.75mol / L, that is, the Ni(NO 3 ) 2 and Fe(NO 3 ) 3 The molar ratio is 5:5.

[0048] Other steps are identical with embodiment 1, deposit one deck Ni-Fe hydroxide nano film on copper sheet, the particle diameter of Ni-Fe hydroxide is 40nm (see Figure 5 ).

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Abstract

The invention discloses a method for preparing Ni-Fe hydroxide nanometer films through electrodeposition. According to the method, cyclohexanol is used as an oil phase, TX-100 is used as a surfactant, 1-butyl-3-methylimidazolium tetrafluoroborate is used as a cosurfactant, an aqueous solution of Ni(NO3)2 and Fe(NO3)3 is used as an aqueous phase, antiphase quaternionic ionic liquid microemulsion with higher conductivity is prepared, then the microemulsion is used as electrolyte, and the Ni-Fe hydroxide nanometer films are prepared by an electrodeposition method. According to the method disclosed by the invention, the 1-butyl-3-methylimidazolium tetrafluoroborate is added to the microemulsion, so that the conductivity property of the microemulsion is improved, and the electrodeposition efficiency is improved; the 1-butyl-3-methylimidazolium tetrafluoroborate is used as the cosurfactant to participate in the formation of micro micelles, and is used as a soft template agent to prevent nanometer particles from clumping, so that the size of a microreactor can be effectively controlled, further the size of Ni-Fe hydroxide is controlled, the catalysis specific surface areas are effectively increased, and the catalytic property of the Ni-Fe hydroxide as a water decomposition anode catalyst is improved.

Description

technical field [0001] The invention relates to a method for preparing Ni-Fe hydroxide nano film by electrodeposition in a reverse-phase quaternary ionic liquid microemulsion system. Background technique [0002] In recent years, nanostructured materials have attracted much attention due to their unique physical and chemical properties. Among them, some nano-hydroxides have high porosity and are used to make high-performance gas sensors. In addition, it can also be used to make sensitive devices, magnetic materials and fuel cells. Due to the large surface area and many surface active centers of nanoparticles, nano hydroxide materials are also excellent catalytic materials. [0003] At present, there are many methods for preparing nano-hydroxide materials, and the microemulsion method is an ideal preparation method. Microemulsion is a thermodynamically stable, isotropic and transparent dispersion liquid produced by two immiscible liquids under the action of surfactant mole...

Claims

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Application Information

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IPC IPC(8): C25D9/04B82Y40/00
CPCB82Y40/00C25D9/04
Inventor 王增林常春吴海燕
Owner SHAANXI NORMAL UNIV
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