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A kind of preparation method of feathery nickel selenide with large surface area

A feather-like, nickel-selenide technology, applied in the field of nanomaterials, can solve the problems of less active sites, poor conductivity, and hindered catalytic efficiency

Active Publication Date: 2021-08-20
ANHUI UNIVERSITY OF ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of active sites and poor conductivity, it hinders the improvement of its catalytic efficiency in the field of photocatalysis and electrocatalysis.

Method used

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  • A kind of preparation method of feathery nickel selenide with large surface area
  • A kind of preparation method of feathery nickel selenide with large surface area

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Mix 0.567g of nickel nitrate hexahydrate, 0.237g of selenium powder, 0.597g of hydroxylamine hydrochloride, and 0.624g of sodium formate in a solvent composed of 17.5ml of water and 17.5ml of ethanol, stir with a magnetic rotor for 30min, and stir evenly to obtain a reaction solution;

[0026] (2) Put the reaction solution in a high-pressure hydrothermal reaction kettle, seal it for 15 hours at a temperature of 160°C, and then centrifuge and wash it with ethanol and distilled water for 3 times after cooling, and dry it in a vacuum with a vacuum degree of less than 0.1Pa. drying in an oven to obtain a feathery nickel selenide powder material with a large surface area.

[0027] figure 1 This is the scanning electron microscope (SEM) image of nickel selenide prepared in this example, showing that the microscopic morphology of nickel selenide is feather-like;

[0028] figure 2 For the X-ray diffraction pattern (XRD) of nickel selenide prepared in this example, the po...

Embodiment 2

[0030] (1) Mix 0.851g of nickel nitrate hexahydrate, 0.356g of selenium powder, 0.597g of hydroxylamine hydrochloride, and 0.624g of sodium formate in a solvent composed of 17.5ml of water and 17.5ml of ethanol, stir with a magnetic rotor for 30min, and stir evenly to obtain a reaction solution;

[0031] (2) Put the reaction solution in a high-pressure hydrothermal reaction kettle, seal it for 15 hours at a temperature of 160°C, and then centrifuge and wash it with ethanol and distilled water for 3 times after cooling, and dry it in a vacuum with a vacuum degree of less than 0.1Pa. drying in an oven to obtain a feathery nickel selenide powder material with a large surface area.

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Abstract

The invention discloses a method for preparing feathery nickel selenide with a large surface area. The invention uses selenium powder as a selenium source and nickel nitrate hexahydrate as a nickel source, and adopts a chemical hydrothermal method to prepare feathery nickel selenide with a large surface area. Powder material. The length characteristic dimension of the prepared feathery nickel selenide is about 1-50um, and the width characteristic dimension is about 10-100um. The method of the invention is simple to operate, and the microscopic appearance of the prepared nickel selenide is symmetrical and feather-like, and has the advantages of large surface area, strong shape controllability, uniform composition, etc., and can be applied to fields such as catalytic hydrogen production in the direction of new energy.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a method for preparing feathery nickel selenide with a large surface area. Background technique [0002] Energy has become a key issue restricting the rapid development of the current society, and the development of clean energy is a hot spot in today's energy development. Due to its clean, non-polluting and recyclable advantages, hydrogen energy has attracted extensive attention in current research. Platinum (Pt) group metals have excellent electrochemical hydrogen evolution performance (HER) in water electrolysis to generate hydrogen, but their high cost hinders their large-scale application in the hydrogen production industry. Therefore, the discovery of cheap and efficient catalysts is of great significance in the utilization of new energy. [0003] The band gap of selenide semiconductor materials is generally between 0.3 and 3.0 eV. It is an important direct ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04
CPCC01B19/007C01P2002/72C01P2004/03C01P2004/61C01P2006/12
Inventor 李钦胡浩威
Owner ANHUI UNIVERSITY OF ARCHITECTURE