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Method of preparing nickel gallium alloy by ionic liquid electrodeposition

A technology of ionic liquid and ionic liquid solvent, which is applied in the field of preparation of nickel-gallium alloy, can solve the problems of complex preparation method, high temperature of nickel-gallium alloy, unfavorable electrocatalysis of nickel-gallium alloy catalyst, etc., and achieve simple preparation method and high catalytic activity , The effect of large catalytic reaction current density

Active Publication Date: 2015-12-02
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the technical problems that the existing chemical reduction method requires high temperature for preparing nickel-gallium alloy, the preparation method is complicated, and its substrate is not conducive to the application of nickel-gallium alloy catalyst in electrocatalysis, and provides an ionic liquid electrodeposition to prepare nickel-gallium alloy method

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  • Method of preparing nickel gallium alloy by ionic liquid electrodeposition
  • Method of preparing nickel gallium alloy by ionic liquid electrodeposition

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specific Embodiment approach 1

[0025] Specific embodiment one: the method for preparing nickel-gallium alloy by ionic liquid electrodeposition in this embodiment is carried out according to the following steps:

[0026] 1. Preparation of ionic liquid plating solution

[0027] First, the ionic liquid solvent is dehydrated and dried, then the vacuum-dried nickel salt and gallium salt are added to the ionic liquid solvent, and then the solubilizer and grain refiner are added in sequence, and heated and stirred until the nickel salt and gallium salt are completely dissolved , to obtain the electroplating solution;

[0028] The concentration of the nickel salt in the electroplating solution is 0.1g / L~30g / L; the concentration of the gallium salt in the described electroplating solution is 0.1g / L~30g / L; the concentration of the solubilizer in the described electroplating solution is 10ml / L~500ml / L; the concentration of the grain refiner in the electroplating solution is 0.1g / L~10g / L;

[0029] Second, the pretrea...

specific Embodiment approach 2

[0035] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, the specific method of dehydrating and drying the ionic liquid solvent is as follows: the ionic liquid is placed in an open glass container and placed in a vacuum drying oven. Dry at 80°C for 24h. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the heating temperature in step 1 is 50-90°C. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method of preparing nickel gallium alloy by ionic liquid electrodeposition, relating to the method of preparing the nickel gallium alloy which solves the problems that in an existing chemical reduction method, the required temperature is high when the nickel gallium alloy is prepared, the preparation method is complex, and a matrix of the nickel gallium is not conducive to applying a nickel gallium catalyst to electro-catalysis. The method comprises the steps of 1, preparing ionic liquid electroplate liquid; pre-processing the matrix; assembling a constant electric potential deposition device; electrodepositing the nickel gallium alloy. According to the method of preparing the nickel gallium alloy by the ionic liquid electrodeposition provided by the invention, the nickel gallium alloy can be prepared on a conductive substrate at low temperature in situ, energy sources are saved, the cost is lowered, and the condition is simplified. The method of preparing the nickel gallium alloy by the ionic liquid electrodeposition is used for an electro-catalyzed reaction of carbon dioxide preparing alcohol.

Description

technical field [0001] The invention relates to a preparation method of nickel-gallium alloy. Background technique [0002] Worldwide, approximately 65 million tons of methanol are used annually in the production of coatings, polymers, glues and biofuels. Traditional syngas to methanol process uses Cu / ZnO / Al 2 o 3 Catalyst, under high pressure CO, CO 2 and H 2 The composition of synthesis gas is catalytically converted to methanol. [0003] In 2014, researchers from Stanford University in the United States and the Technical University of Denmark used computational methods to determine that nickel-gallium intermetallic compounds have good activity and stable properties (DiscoveryofaNi-Gacatalystforcarbondioxidereductiontomethanol, NATURECHEMISTRY Online Journal, Issue 6, April 2014, page number: 320 -324). They used the chemical reduction method to impregnate silicon dioxide in a mixed solution of nickel nitrate and gallium nitrate, and then performed a reduction treatm...

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Application Information

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IPC IPC(8): C25D3/66C25D5/00
Inventor 张锦秋谷兴安茂忠杨培霞
Owner HARBIN INST OF TECH
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