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Application of copper-nickel nano alloys

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: 2016-09-14
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 nano alloys
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  • Application of copper-nickel nano alloys

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 an application of copper-nickel nano alloys, and in particular, relates to an application of the copper-nickel nano alloys as cocatalysts for hydrogen production through water photolysis. Copper-nickel nano alloy particles are synthesized by directly using a pulsed laser ablation technique in isopropanol and an aqueous solution. The method is simple and rapid, can be completed at normal temperature and pressure, and has no strict requirements on operating environments. The method is safe and clean and has no need of additional chemical additives, and the material surface is clean. The copper-nickel alloys are prepared directly from a copper and nickel non-alloy phase mixed target, and the metal alloying process is effectively combined with a from-top-to-bottom nano-material preparation method. When the copper-nickel nano alloys are prepared, the copper-nickel nano alloys with different compositions can be prepared from a same target material by a one-step method through changing a liquid environment. The prepared copper-nickel nano alloys have excellent co-catalysis performance for hydrogen production through water photolysis, and have the co-catalysis effect better than that of single-component copper nanoparticles and single-component 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 Applications(China)
IPC IPC(8): B01J23/755B01J35/08C01B3/04B22F9/06B22F1/00C22C19/03C22C9/06C25B1/04C25B11/06B82Y30/00B82Y40/00
CPCC22C9/06C22C19/002C22C19/03C25B1/04C25B11/04B82Y30/00B82Y40/00C01B3/042B01J23/755B22F9/06C01B2203/1052C01B2203/1076C25B1/55B22F1/054B01J35/393B01J35/23B01J35/51B01J35/39Y02E60/36
Inventor 杨国伟林昭勇李丽华余丽莉
Owner SUN YAT SEN UNIV
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