Co(OH)<2> with nano-tube structures, method for preparing Co(OH)<2> and application thereof

A technology for nanotubes and uses, applied in the field of nanotube-structured Co2 and its preparation, can solve the problems of high price and scarce availability, and achieve the effects of low cost, increased catalytic active sites, and low requirements for preparation equipment

Inactive Publication Date: 2017-06-09
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the most effective and commonly used electrocatalysts for water oxidation are recognized as Ru and Ir oxides, but they are expensive and scarcely available.

Method used

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  • Co(OH)&lt;2&gt; with nano-tube structures, method for preparing Co(OH)&lt;2&gt; and application thereof
  • Co(OH)&lt;2&gt; with nano-tube structures, method for preparing Co(OH)&lt;2&gt; and application thereof
  • Co(OH)&lt;2&gt; with nano-tube structures, method for preparing Co(OH)&lt;2&gt; and application thereof

Examples

Experimental program
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Embodiment 1

[0025] (1) Configure CuSO separately 4 (Concentration is 1mol / L), C 6 h 12 o 6 (concentration is 2mol / L) and NaOH (concentration is 2.5mol / L) solution 25 mL each; the CuSO 4 The solution was added into a 150 mL three-neck reaction flask, stirred at room temperature, and NaOH solution was slowly added, and the stirring was continued for 10 min after the addition, to obtain Cu(OH) 2 slurry, warm to 50°C, and bring the heat to 50°C 6 h 12 o 6 The solution was added to the reaction flask and reacted at constant temperature for 1 h to prepare Cu 2 The O slurry was suction filtered, washed three times with water, then washed three times with absolute ethanol, and dried at 60 °C for 24 h to obtain Cu 2 O;

[0026] (2) Weigh the Cu obtained in step (1) 2 Put 100 mg of O, 34 mg of cobalt chloride hexahydrate, and 3.333 g of SDS into a beaker, add 50 mL of distilled water and 50 mL of absolute ethanol, sonicate for 5 min, stir for 10 min, and then add 40 mL of 1.0 mol / L Na 2 S...

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Abstract

The invention belongs to the field of catalyst synthesis, and particularly discloses Co(OH)<2> with nano-tube structures, a method for preparing the Co(OH)<2> and application thereof. The method includes mixing cobalt sources, cuprous oxide and SDS (sodium dodecyl sulphate) with one another to obtain mixtures and dissolving the mixtures in isovolumetric mixed solution of water and absolute ethyl alcohol; ultrasonically dispersing the mixtures and the isovolumetric mixed solution and then stirring the mixtures and the isovolumetric mixed solution to uniformly mix the mixtures and the isovolumetric mixed solution to obtain first solution; adding sodium thiosulfate solution into the first solution, and continuing to stir the sodium thiosulfate solution and the first solution until colors of solution are turned into light green; filtering and washing the solution and drying the solution under the vacuum conditions to obtain the Co(OH)<2>. The Co(OH)<2> can be used as a catalyst. The Co(OH)<2>, the method and the application have the advantages that the method is simple and convenient and has low requirements on preparation equipment, and potential safety hazards in experimental procedures can be reduced; as compared with commercial RuO<2> catalysts, the electrocatalytic water oxidation activity and stability of the Co(OH)<2> are obviously superior to the electrocatalytic water oxidation activity and stability of RuO<2>, good FTO attaching effects can be realized, the Co(OH)<2> is free of falling, and accordingly the Co(OH)<2> and the method have excellent application prospects.

Description

technical field [0001] The invention belongs to the field of catalyst synthesis, in particular to a nanotube-structured Co(OH) 2 And its preparation method and use. Background technique [0002] With the rapid development of social economy and the rapid increase of population in the 21st century, the demand for energy has reached an unprecedented height, and the energy problem has become the primary problem to be solved in the world today. With the depletion of coal, oil, natural gas and other resources, people will face serious energy shortage. In view of this, in order to enable the sustainable development of human society, it is imperative to develop renewable energy and environment-friendly energy. Hydrogen has been widely valued due to its advantages of low production cost, high calorific value, no pollution, and recyclability. We know that water electrolysis produces hydrogen and oxygen. From a thermodynamic point of view, the water splitting reaction is relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04B01J23/75
CPCB01J23/75B01J35/0033C01G51/04C01P2002/72C01P2004/03C01P2004/04C01P2004/13C01P2006/40
Inventor 杨敬贺杨朵张杰马炜
Owner ZHENGZHOU UNIV
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