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Flower cop 3 /ni 2 Preparation method and application of p nano-hybrid

A nano-hybrid, flower-like technology, applied in chemical instruments and methods, phosphide, nanotechnology, etc., can solve the problems of high phosphating temperature, long time, and complicated preparation methods, and achieve excellent hydrogen production performance of electrolytic water, avoid The effect of sintering

Inactive Publication Date: 2020-03-13
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional preparation method of phosphorus-rich compounds is cumbersome, and the required phosphating temperature is high (≥750°C) and the time is long (≥5h). The obtained phosphorus-rich compounds are basically sintered and the catalytic activity is reduced.

Method used

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  • Flower cop <sub>3</sub> /ni <sub>2</sub> Preparation method and application of p nano-hybrid
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  • Flower cop <sub>3</sub> /ni <sub>2</sub> Preparation method and application of p nano-hybrid

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A flower-like CoP 3 / Ni 2 The preparation method of P nano hybrid is as follows:

[0025] 1. Synthesis of flower-like CoNi double metal hydroxide: synthesized by one-step hydrothermal method, 0.02328g Co (NO 3 ) 2 ·6H 2 O (~0.08mmol), 0.03803g NiCl 2 ·6H 2 O (~0.16 mmol) and 0.072 g urea (1.2 mmol), dissolved in deionized water (80 mL). After sonication for at least 30 min, the solution was then transferred into a 100 mL stainless steel autoclave and heated in an oven to 120 °C with a hydrothermal time of 2 h. Then cool to room temperature. The product was collected, washed with water and dried in an oven for more than 10 hours.

[0026] 2. Put sodium hypophosphite (1.0g) in a porcelain boat on the upstream side of the tube furnace, put flower-shaped CoNi double metal hydroxide (100mg) in another porcelain boat and place it in the downstream of the tube furnace, place The sample was heated and kept at 600°C for 0.5h, and the heating rate was 3°C / min. Then in A...

Embodiment 2

[0028] Change the hydrothermal temperature to 130°C, and other treatments are the same as in Example 1.

Embodiment 3

[0030] Change the hydrothermal temperature to 140° C., and other treatments are the same as in Example 1.

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Abstract

The invention discloses a preparation method of flower-like CoP3 / Ni2P nano-hybrids. The preparation method includes the steps: (1) performing hydrothermal synthesis on CoNO3*6H2O, NiCl*6H2O and urea in a reaction kettle for 2-5h at the temperature of 120-160 DEG C to obtain flower-like CoNi bimetal hydroxide nano-sheets serving as precursors; (2) flushing the precursors acquired in the step (1) by the aid of distilled water, and drying the flushed precursors for standby application; (3) performing phosphorization on samples acquired in the step (2) and sodium hypophosphite in a tubular furnace for 0.5-1.5h at the temperature of 600-650 DEG C; (4) repeatedly flushing the phosphatized samples by the aid of water and ethyl alcohol, drying the flushed samples to obtain the flower-like CoP3 / Ni2P nano-hybrids. The preparation method has the advantages that the phosphorization is finished at low temperature and in a short time, and the three-dimensional flower-like CoP3 / Ni2P nano-hybrids are acquired and have superior hydrogen producing performance by electrolytic water.

Description

technical field [0001] The invention belongs to the field of preparation of nanomaterials, specifically a CoP 3 / Ni 2 Preparation methods of P nanohybrids and their application in electrocatalytic hydrolysis for hydrogen production. Background technique [0002] The urgent need for clean and renewable energy drives the exploration of catalysts for hydrogen production from water electrolysis. Recently, transition metal phosphides (TMPs) have been shown to be highly active, highly stable [0003] HER catalysts, and have near 100% Faradaic efficiency not only in strongly acidic solutions but also in strongly alkaline and neutral media. And with the increase of phosphorus content in phosphide, the electrocatalytic performance is better. A large number of studies have shown that nano-hybrids as catalysts can combine the advantages of each component, and produce synergistic effects at the heterogeneous interface, greatly improving the performance of catalytic hydrogen producti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/08C01B3/04B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B3/042C01B25/08C01P2004/03C01P2004/30C01P2004/61C01P2004/64C01P2004/82Y02E60/36
Inventor 任君杨东江
Owner ZHONGBEI UNIV