Three-dimensional foamed silver-copper bimetallic sulfide self-supporting film and preparation method thereof

A self-supporting thin-film and foam-like technology, applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve the problems of preventing large-scale application and high price, and achieve low price, good effect, and favorable The effect of promotion and development

Active Publication Date: 2022-02-15
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high price of the precious metal platinum (Pt) involved in the above-mentioned patents prevents the large-scale application of this technology

Method used

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  • Three-dimensional foamed silver-copper bimetallic sulfide self-supporting film and preparation method thereof
  • Three-dimensional foamed silver-copper bimetallic sulfide self-supporting film and preparation method thereof
  • Three-dimensional foamed silver-copper bimetallic sulfide self-supporting film and preparation method thereof

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preparation example Construction

[0036] A preparation method of a three-dimensional foamed silver-copper bimetallic sulfide self-supporting film, comprising the following steps:

[0037] 1) Weighing a certain amount of sulfur source, silver salt, copper salt and surfactant and placing them in a solvent, fully stirring and ultrasonicating;

[0038] 2) Transfer the mixed solution of sulfur source, silver salt, copper salt, surfactant and solvent to a polytetrafluoro-lined reaction kettle or other pressure-resistant container and raise the temperature to 100-200°C, react for 1-72 hours, and then After cooling, a three-dimensional foamed silver-copper bimetallic sulfide self-supporting film is obtained.

[0039]In the present invention, sulfur source, silver salt, copper salt, surfactant and solvent are used as raw materials, and three-dimensional foamy silver-copper bimetallic sulfide self-supporting film is synthesized by simple hydrothermal method or solvothermal method. In the present invention, the sulfur s...

Embodiment 1

[0053] A preparation method of a three-dimensional foamed silver-copper bimetallic sulfide self-supporting film, comprising the following steps:

[0054] Weigh 0.286 gram of silver chloride, 0.050 gram of cuprous chloride, 0.912 gram of thiourea, 0.364 gram of hexadecyltrimethylammonium bromide and add in 55 milliliters of water and stir for 30 minutes, ultrasonic for 60 minutes, and transfer the obtained mixture to Put it into a high-pressure reactor with a polytetrafluoroethylene liner, react at 170°C for 10 hours, and then cool it down to obtain a three-dimensional foam-like silver-copper bimetallic sulfide self-supporting film.

[0055] figure 1 It is the X-ray powder diffraction pattern (XRD) of the three-dimensional foamed silver-copper bimetallic sulfide self-supporting film that the present embodiment prepares, by figure 1 It can be seen that the film prepared in this example is the phase of silver-copper bimetallic sulfide.

[0056] figure 2 It is an optical photo...

Embodiment 2

[0069] A preparation method of a three-dimensional foamed silver-copper bimetallic sulfide self-supporting film, comprising the following steps:

[0070] Weigh 0.286 g of silver chloride, 0.050 g of cuprous chloride, 0.900 g of thioacetamide, 0.364 g of cetyltrimethylammonium bromide, add 55 ml of water and stir for 30 minutes, ultrasonic for 60 minutes, and the obtained mixture Transfer to a high-pressure reactor lined with polytetrafluoroethylene, react at 170°C for 10 hours, and then cool to obtain a three-dimensional foam-like silver-copper bimetallic sulfide self-supporting film.

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Abstract

The invention discloses a preparation method of a three-dimensional foamed silver-copper bimetallic sulfide self-supporting film. The method comprises the following steps: weighing a certain amount of sulfur source, silver salt, copper salt and surfactant, putting into a solvent, performing full stirring, and carrying out ultrasonic treatment; and then synthesizing the three-dimensional foamed silver-copper bimetallic sulfide self-supporting film by using a hydrothermal method or a solvothermal method. The invention further discloses the three-dimensional foamed silver-copper bimetallic sulfide self-supporting thin film. According to the preparation method of the three-dimensional foamy silver-copper bimetallic sulfide self-supporting thin film, the three-dimensional foamy silver-copper bimetallic sulfide self-supporting thin film is prepared from low-price raw materials through a simple one-step hydrothermal method or a solvothermal method, the three-dimensional foamy silver-copper bimetallic sulfide self-supporting thin film can be directly used in an electro-catalytic reaction, and the use of a binder is avoided. In addition, compared with a traditional noble metal electrocatalyst, the substrate-free silver-copper bimetallic sulfide film-shaped catalyst obtained by the method is low in price.

Description

technical field [0001] The invention relates to the fields of materials and energy, in particular to a three-dimensional foamed silver-copper bimetallic sulfide self-supporting film and a preparation method thereof. Background technique [0002] With the gradual depletion of fossil energy and the increasing environmental pollution, the demand for new energy sources is increasing. Hydrogen has attracted much attention as a clean energy carrier, but the storage and transportation of hydrogen restrict the large-scale development and utilization of hydrogen energy. Ammonia is an ideal hydrogen carrier with a mass fraction of hydrogen of up to 17.65% (higher than 11.1% of water) and an energy density of up to 3000Wh kg -1 , the hydrogen obtained from the decomposition of ammonia does not contain carbon oxides that cause poisoning of fuel cell electrode catalysts. Ammonia can be converted into a liquid state under normal temperature and pressure conditions, which is easier to st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J37/10B01J37/08C25B1/04C25B1/02C25B11/081
CPCB01J27/04B01J37/10B01J37/08B01J35/0033C25B1/04C25B1/02C25B11/081Y02E60/36
Inventor 赵学波张硕闫理停
Owner QILU UNIV OF TECH
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