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Preparation method of porous rod-like Co/C nanorod composite material

A composite material and nanorod technology, which is applied in the field of preparation of porous rod-shaped Co/C nanorod composite materials, can solve the problem of high cost of noble metal doped modified electrocatalysts, achieve excellent electrocatalytic performance, improve reaction catalytic efficiency, and high The effect of specific area

Pending Publication Date: 2021-11-30
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problem of high cost of noble metal-doped modified electrocatalysts, the present invention provides a method for preparing a porous rod-shaped Co / C nanorod composite material, which consists of NTA and metal salt Co(NO 3 ) 2 ·6H 2 O is prepared by sintering in a tube furnace after hydrothermal treatment. The conditions are mild and the purity is good. It is suitable for large-scale production, and the prepared rod-shaped porous Co / C nanorod composite electrocatalyst has high electrocatalytic activity.

Method used

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  • Preparation method of porous rod-like Co/C nanorod composite material

Examples

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Embodiment 1

[0022] A method for preparing a porous rod-shaped Co / C nanorod composite material, comprising the following steps:

[0023] (1) Preparing the precursor: add 0.1911g NTA white powder to disperse in a beaker with 10mL deionized water, then add 0.20g Co(NO 3 ) 2 ·6H 2 O, NTA and Co(NO 3 ) 2 ·6H 2 The molar ratio of O is 1:1. Stir magnetically at room temperature for 10 minutes until it dissolves completely, then add 20ml of isopropanol, stir magnetically at room temperature for half an hour until uniform, move to a high-pressure reactor, put it in an oven, and react at 180°C 6 hours; the reaction product was centrifuged with a high-speed centrifuge at a speed of 4000rpm to obtain the precipitate. The precipitate was washed 3 times with water to neutrality, and then washed 3 times with absolute ethanol. The washed precipitate was placed in a vacuum oven at 60°C for 12 hours. Get precursors.

[0024] (2) Preparation of Co / C nanorods: Calcining the precursor in a tube furnace,...

Embodiment 2

[0027] A method for preparing a porous rod-shaped Co / C nanorod composite material, comprising the following steps:

[0028] (1) Preparation of the precursor: Add 0.0994g of NTA white powder to disperse in a beaker with 10mL of deionized water, then add 0.21g of Co(NO 3 ) 2 ·6H 2 O, NTA and Co(NO 3 ) 2 ·6H 2 The molar ratio of O is 1:2. Stir magnetically at room temperature for 10 minutes until it dissolves completely, then add 20ml of isopropanol, stir magnetically at room temperature for half an hour until uniform, move to a high-pressure reactor, put it in an oven, and react at 180°C 6 hours; the reaction product was centrifuged with a high-speed centrifuge at a speed of 4000rpm to obtain the precipitate. The precipitate was washed 3 times with water to neutrality, and then washed 3 times with absolute ethanol. The washed precipitate was placed in a vacuum oven at 60°C for 12 hours. get the precursor;

[0029] (2) Preparation of Co / C nanorods: Calcining the precursor i...

Embodiment 3

[0031] A method for preparing a porous rod-shaped Co / C nanorod composite material, comprising the following steps:

[0032] (1) Preparing the precursor: add 0.38g NTA white powder to disperse in a beaker with 10mL deionized water, then add 0.20g Co(NO 3 ) 2 ·6H 2 O, NTA and Co(NO 3 ) 2 ·6H 2The molar ratio of O is 2:1. Stir magnetically at room temperature for 10 minutes until it dissolves completely, then add 20ml of isopropanol, stir magnetically at room temperature for half an hour until uniform, move to a high-pressure reactor, put it in an oven, and react at 180°C 6 hours; the reaction product was centrifuged with a high-speed centrifuge at a speed of 4000rpm to obtain the precipitate. The precipitate was washed 3 times with water to neutrality, and then washed 3 times with absolute ethanol. The washed precipitate was placed in a vacuum oven at 60°C for 12 hours. get the precursor;

[0033] (2) Preparation of Co / C nanorods: Calcining the precursor in a tube furnace,...

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Abstract

The invention relates to the technical field of catalysts, provides a preparation method of a porous rod-like Co / C nanorod composite material, aims at the problem of high cost of a noble metal doped modified electrocatalyst, the preparation method comprises the following steps: preparing a precursor by utilizing NTA and Co (NO3) 2.6 H2O hydrothermal method, calcining the precursor, calcining in inert gas at 450-500 DEG C for 2-2.5 hours, and after calcining, cooling to obtain the rod-like porous Co / C nanorod composite electrocatalyst. The rod-like porous Co / C nanorod composite electrocatalyst is prepared from NTA and metal salt Co (NO3) 2.6 H2O through hydrothermal treatment and then tubular furnace sintering, the condition is mild, the purity is good, and the prepared rod-like porous Co / C nanorod composite electrocatalyst has high electrocatalytic activity.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a method for preparing a porous rod-shaped Co / C nanorod composite material. Background technique [0002] In recent years, the problems of environmental pollution and energy shortage have become increasingly serious, and people are concentrating on the research and development of various new energy technologies and equipment. Due to the advantages of environmental friendliness and high chemical energy, electrocatalytic technology is widely considered as an important way to solve environmental pollution and energy crisis. With the development of industrialization, the problem of energy shortage and environmental pollution is becoming more and more serious, which forces people to constantly look for clean and sustainable energy to improve environmental and energy issues. Ammonia is one of the necessary raw materials for industrial development and agriculture. On the other hand,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/27C25B11/091
CPCC25B1/27C25B11/091
Inventor 高鹏邓苹
Owner HANGZHOU NORMAL UNIVERSITY
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