Method for synthesizing cobalt oxide and ferrocobalt layered bimetal hydroxide compound

Abstract

The invention belongs to a method for synthesizing a nanometer material from top to bottom by a physical mode, and discloses a method for synthesizing a cobalt oxide and ferrocobalt layered bimetal hydroxide compound. The method comprises the steps of taking a block-shaped ferrocobalt alloy target as a raw material, and polishing and cleaning to remove an oxide layer on a surface; placing the block-shaped ferrocobalt alloy target in a container, and adding a sodium chloride solution to a position above the alloy target by 3-4 centimeters; performing ablation on the alloy target for 20-30 minutes by employing a nanosecond pulse laser liquid phase with a wavelength being 1,064 nanometers; and finally, taking out a brown solution in the container, performing freezing and drying to obtain a powder compound product after centrifugation. The ferrocobalt alloy target in the sodium chloride solution is ablated by a nanosecond laser liquid phase ablation technology to obtain the cobalt oxide and ferrocobalt layered bimetal hydroxide compound, the defect of poor conductivity of the material is effectively overcome by a synergistic effect of the cobalt oxide and ferrocobalt layered bimetal hydroxide, and meanwhile, the catalytic activity of water electrolysis to generate oxygen is also greatly improved; and the method is simple in process, ingenious in design and low in cost, and is safe and controllable.

Description

technical field [0001] The invention belongs to a method for synthesizing nanomaterials from top to bottom by using a physical method, and in particular relates to a synthesis method of layered double metal hydroxides. Background technique [0002] At present, the energy crisis and environmental problems caused by fossil fuels are becoming more and more serious, and people are paying more and more attention to the development and utilization of renewable energy. Oxygen production by water splitting is considered to be one of the most potential new energy sources in the future due to its high efficiency and low emissions. However, the commonly used noble metal platinum, iridium, and ruthenium catalysts are limited in further application due to lack of resources. The development of highly active Non-noble metal catalysts have important practical significance. The core reaction on such catalytic electrodes is the anodic oxygen evolution (OER) electrode reaction. Layered doubl...

AI Technical Summary

Problems solved by technology

[0005] What the present invention is to solve is the technical problem of poor reusability and high catalyst cost of existing layered double metal hydroxides compounded with carbon materials, and provides a composite of cobaltous oxide and cobalt-iron layered double hydroxides The method of material, using the nanosecond laser liquid phase ablation technology to ablate the cobalt-iron alloy target in the sodium chloride solution, and obtain the composite of cobaltous oxide and cobalt-iron layered double metal hydroxide, and the synergistic effect of the two is effective It overcomes the shortcomings of poor material conductivity and greatly improves the catalytic activity; the process is simple, the design is ingenious, safe and controllable, and the cost is low

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