Preparation method and application of organic framework supported CeO2/CuO electrocatalytic material

An electrocatalytic material and catalytic material technology, which are applied in the field of organic framework support CeO2/CuO electrocatalytic material preparation to achieve the effect of high repeatability, suitable for large-scale production and good purity

Active Publication Date: 2019-12-20
东北大学秦皇岛分校
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is still challenging to rationally select organic ligands and metal ions and control the reaction conditions to assemble the expected structure (Li Yajuan. Synthesis of Coordination Polymers Based on Asymmetric Ligand 3,4-Pyridinedicarboxylic Acid, Structure and performance research [D]. Hebei Normal University, 2008)

Method used

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  • Preparation method and application of organic framework supported CeO2/CuO electrocatalytic material
  • Preparation method and application of organic framework supported CeO2/CuO electrocatalytic material
  • Preparation method and application of organic framework supported CeO2/CuO electrocatalytic material

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Embodiment 1

[0031] A metal-organic framework supporting CeO 2 / CuO composite total water splitting electrocatalytic material preparation method, the specific steps are as follows:

[0032] Step 1. Dissolve 1 mmol of copper acetate in 10 mmol of deionized water, stir magnetically at 700 r / min for 20 min, and prepare solution A.

[0033] Step 2. Dissolve 1 mmol of cerium acetate in 10 mmol of deionized water, and magnetically stir at 700 r / min for 20 min to prepare solution B.

[0034] Step 3. Weigh 2mmol of triethylamine and add it to 5mmol ethanol solution. After it is completely dissolved, mix it with solution B evenly, sonicate for 10min, add 5mmol of 3,4-pyridinedicarboxylic acid, and sonicate for 10min to prepare Solution C.

[0035] Step 4. Using ITO (conductive glass) (1cm×1cm) as the working electrode, the Pt electrode as the counter electrode, and the saturated calomel electrode (SCE) as the reference electrode, prepare the original CuO nanosheet array in the A solution by elect...

Embodiment 2

[0039] A metal-organic framework supporting CeO 2 / CuO composite total water splitting electrocatalytic material preparation method, the specific steps are as follows:

[0040] Step 1. Dissolve 1mmol of copper nitrate in 5mmol of deionized water, stir magnetically at 800r / min for 20min, and prepare solution A.

[0041] Step 2, get 1mmol cerium nitrate and dissolve in 5mmol deionized water, 800r / min magnetic stirring 20min, prepare solution B.

[0042] Step 3. Weigh 3mmol of ethylenediamine and add it to 10mmol of methanol solution. After it is completely dissolved, mix it with solution B evenly, sonicate for 10min, add 6mmol of 2,6-pyridinedicarboxylic acid, and sonicate for 10min. Prepare solution C.

[0043] Step 4. Using ITO (conductive glass) (1cm×1cm) as the working electrode, the Pt electrode as the counter electrode, and the saturated calomel electrode (SCE) as the reference electrode, prepare the original CuO nanosheet array in the A solution by electrodeposition . ...

Embodiment 3

[0047] A metal-organic framework supporting CeO 2 / CuO composite total water splitting electrocatalytic material preparation method, the specific steps are as follows:

[0048] Step 1. Dissolve 1mmol of copper chloride in 8mmol of deionized water, and stir magnetically at 500r / min for 20min to prepare solution A.

[0049] Step 2, get 1mmol of cerium chloride and dissolve in 8mmol of deionized water, and stir magnetically at 500r / min for 20min to prepare solution B.

[0050] Step 3. Weigh 2.5mmol dodecylamine and add it to 10mmol propanol solution. After it is completely dissolved, mix it with solution B evenly, sonicate for 10min, add 8mmol of 3,5-pyridinedicarboxylic acid, and sonicate for 10min , to prepare solution C.

[0051] Step 4. Using ITO (conductive glass) (1cm×1cm) as the working electrode, the Pt electrode as the counter electrode, and the saturated calomel electrode (SCE) as the reference electrode, prepare the original CuO nanosheet array in the A solution by e...

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Abstract

The invention belongs to the field of electrocatalytic overall water splitting, and particularly relates to a preparation method and application of a metal organic framework supported CeO2 / CuO electrocatalytic material. According to the method, the CeO2 / CuO electrocatalyst is prepared by using a coordination process, and the obtained electrocatalyst powder has high purity, better catalytic performance and high repeatability, and is easy to synthesize on a large scale; and the CeO2 / CuO composite electrocatalyst material exhibits excellent catalytic performance when applied to hydrogen evolutionand oxygen evolution reactions, achieves a current density of 10 mA*cm<-2> with overpotentials of 258 mV and 463 mV, respectively, and is a potential electrocatalytic overall water splitting catalyst.

Description

technical field [0001] The invention belongs to the field of electrocatalytic total water splitting, in particular to an organic framework supporting CeO 2 / CuO electrocatalytic material preparation method and its application. Background technique [0002] The design and preparation of metal-ligand compounds have attracted more and more attention. Ligands are mainly responsible for energy absorption and energy transfer. Metal-ligand compounds have important applications in gas physical adsorption, ion exchange, and photocatalysts. At present, coordination chemistry is not only the mainstream subject of inorganic chemistry, but also has more and more close links with analytical chemistry, material chemistry, polymer chemistry, organic chemistry, biochemistry, physical chemistry and other disciplines. The interpenetration and fusion become the intersection of many disciplines, and it is accompanied by its own novelty and uniqueness. Therefore, more and more scientists in mo...

Claims

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Application Information

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IPC IPC(8): B01J31/22B01J23/72B01J23/10C25B1/04C25B11/06
CPCB01J31/2243B01J23/72B01J23/10B01J23/002C25B1/04B01J2531/16C25B11/095B01J35/33Y02E60/36
Inventor 刘宣文郭瑞张圣琦温辉于涛
Owner 东北大学秦皇岛分校
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