Application of Copper-Nickel Nanoalloy

A nano-alloy, copper-nickel technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of copper promoter performance not comparable to platinum, poor copper stability, failure, etc. Excellent photocatalytic hydrogen production from water splitting, excellent catalytic effect, and the effect of improving hydrogen production performance

Active Publication Date: 2019-01-04
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the catalytic performance of copper is still not comparable to that of platinum, and the stability of copper is poor, and it is easily oxidized and invalidated in the air.

Method used

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  • Application of Copper-Nickel Nanoalloy
  • Application of Copper-Nickel Nanoalloy
  • Application of Copper-Nickel Nanoalloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1) Polish the surface of the copper target with sandpaper, and at the same time remove part of the oxide on the surface of the copper target placed in the air. Then ultrasonic cleaning was performed in deionized water for 15 min, followed by ultrasonic cleaning in acetone for 15 min, and finally ultrasonic cleaning in absolute ethanol for 15 min. Take out the copper target, dry it in an oven, and soak it in isopropanol for use.

[0042] 2) Remove the copper target from the isopropanol, air-dry it naturally and place it in a glass reaction container, which is cylindrical, with a bottom diameter of 3.6 cm and a height of 15 cm. Inject 10 mL of isopropanol into the reaction vessel, so that the isopropanol immerses the copper target. The vertical distance between the isopropanol liquid level and the upper surface of the copper target is 0.8cm.

[0043]3) Adjust the output beam of the laser so that the laser beam is focused on the surface of the target after passing throug...

Embodiment 2

[0047] The difference from Example 1 is that this example changes the copper target into Cu 50 Ni 50 Target, 10mL reaction liquid isopropanol was replaced by 10mL isopropanol and water mixed solution (volume ratio: 1:0.7), and other preparation conditions remained the same as in Example 1. After the laser ablation reaction, dry to obtain the desired Cu 83 Ni 17 Nano alloy particles.

Embodiment 3

[0049] The difference from Example 1 is that this example changes the copper target into Cu 50 Ni 50 Target, 10mL of reaction liquid isopropanol was replaced by 10mL of isopropanol and water mixed solution (volume ratio 1:0.2), and other preparation conditions remained the same as in Example 1. After the laser ablation reaction, dry to obtain the desired Cu 63 Ni 37 Nano alloy particles.

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Abstract

The invention discloses the application of a copper-nickel nano-alloy, in particular the application of the copper-nickel nano-alloy as a cocatalyst for hydrogen production by photolysis of water. The invention directly synthesizes the copper-nickel nano-alloy particle by using the pulse laser ablation technology in the isopropanol and aqueous solution. This method is simple and fast, can be completed at normal temperature and pressure, and has no strict requirements on the operating environment; this method is safe and clean, without additional chemical additives, and the surface of the material is clean. The invention directly prepares the copper-nickel alloy from the copper-nickel non-alloy phase mixed target, effectively combining the metal alloying process and the "top-down" nanometer material preparation method. When preparing the copper-nickel nano-alloy, the present invention can realize the one-step preparation of the copper-nickel nano-alloy with different components from the same target material by changing the liquid environment. The copper-nickel nano-alloy prepared by the invention exhibits excellent catalytic performance for hydrogen production by photolysis of water, and the catalytic promotion effect is better than that of single-component copper nanoparticles and nickel nanoparticles.

Description

technical field [0001] The invention relates to the field of new energy in which nanomaterials are applied to produce hydrogen by photolysis of water, in particular to the application of a copper-nickel nano-alloy. Background technique [0002] Energy, together with information and materials, is called the three pillars of the development of modern society. Since the 21st century, new energy has become a new research hotspot. Hydrogen energy, a clean and sustainable secondary energy source, is one of the typical representatives. Seeking cheap and environmentally friendly hydrogen production technology is a common concern of scientists from all over the world. The use of solar energy to obtain hydrogen energy from water is a new technology for hydrogen production that has attracted much attention. The photoelectrochemical water splitting system (photoelectrocatalytic technology) developed in the 1970s uses an external electric field to drive the hydrogen reduction reaction...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J35/08C01B3/04B22F9/06B22F1/00C22C19/03C22C9/06C25B1/04C25B11/06B82Y30/00B82Y40/00
CPCC22C9/06C22C19/002C22C19/03C25B1/04C25B11/04B82Y30/00B82Y40/00C01B3/042B01J23/755B01J35/0013B01J35/004B01J35/006B01J35/08B22F9/06C01B2203/1052C01B2203/1076C25B1/55B22F1/054Y02E60/36
Inventor 杨国伟林昭勇李丽华余丽莉
Owner SUN YAT SEN UNIV
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