Preparation method of nano ruthenium oxide

A ruthenium oxide and nanotechnology, applied in the field of nanomaterials, can solve the problems of poor particle crystallinity, unfavorable application, serious agglomeration of ruthenium oxide, etc., and achieve the effects of uniform particle size, strong experimental repeatability, and easy operation

Active Publication Date: 2018-04-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The ruthenium oxide prepared by this method is severely agglomerated, and the cryst

Method used

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  • Preparation method of nano ruthenium oxide
  • Preparation method of nano ruthenium oxide
  • Preparation method of nano ruthenium oxide

Examples

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Embodiment 1

[0042] A preparation method for nanometer ruthenium oxide, comprising the steps of:

[0043] 1) Dissolve 1 g of ruthenium trichloride hydrate in 100 mL of deionized water, and sonicate for 0.2 h;

[0044] 2) Dissolve 0.56g of sodium hydroxide in 100mL of deionized water, and sonicate for 0.2h;

[0045] 3) Pass the ruthenium trichloride source solution and sodium hydroxide solution into the high-gravity rotating bed through a peristaltic pump at a feed flow rate of 600mL / min, and the rotating bed speed is 1200r / min to obtain a precursor solution. The pH of the precursor solution is 9 ;

[0046] 4) Place the obtained precursor solution in an oven, adjust the temperature to 80°C, and age for 3 hours;

[0047] 5) Take out the precursor solution, centrifuge and wash 6 times at 7500r / min;

[0048] 6) Transfer the washed precipitate to a polytetrafluoroethylene reactor, add 100mL of deionized water, and heat at 160°C for 12 hours;

[0049] 7) drying the taken out precipitate in a...

Embodiment 2

[0052] A preparation method for nanometer ruthenium oxide, comprising the steps of:

[0053] 1) Dissolve 6 g of hexaammonium ruthenium trichloride in 500 mL of absolute ethanol, and sonicate for 0.5 h;

[0054] 2) Prepare 5mol / L ammonia solution, take out 1.5mL ammonia water and add 98.5mL ethanol;

[0055] 3) Hexaammonium trichloride ruthenium solution and ammonia water are respectively fed into the high gravity rotary bed through a peristaltic pump at a feed flow rate of 500mL / min, and the rotary bed speed is 2500r / min to obtain a precursor solution, and the pH of the precursor solution is 10;

[0056] 4) Place the obtained precursor solution in an oven, adjust the temperature to 80°C, and age for 3 hours;

[0057] 5) Take out the precursor solution, centrifuge and wash 6 times at 7500r / min;

[0058] 6) Transfer the washed precipitate to a polytetrafluoroethylene reactor, add 100mL of deionized water, and heat at 100°C for 12 hours;

[0059] 7) drying the taken out precip...

Embodiment 3

[0062] A preparation method for nanometer ruthenium oxide, comprising the steps of:

[0063] 1) Dissolve 3 g of ruthenium nitrosyl nitrate in 300 mL of deionized water / ethanol at a ratio of 1:1, and sonicate for 0.5 h;

[0064] 2) Dissolve 1.68g of sodium hydroxide in 300mL of deionized water / ethanol at a ratio of 1:1, and sonicate for 0.5h;

[0065] 3) Feed the ruthenium nitrosyl nitrate source solution and the sodium hydroxide solution into the high-gravity rotating bed through a peristaltic pump with a feed flow rate of 400mL / min, and the rotating bed speed is 1200r / min to obtain a precursor solution. The pH of the precursor solution is 9;

[0066] 4) Place the obtained precursor solution in an oven, adjust the temperature to 70°C, and age for 3 hours;

[0067] 5) Take out the precursor solution, centrifuge and wash 6 times at 7500r / min;

[0068] 6) Transfer the washed precipitate to a polytetrafluoroethylene reactor, add 100mL of deionized water, and conduct a hydrother...

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Abstract

The invention discloses a preparation method of nano ruthenium oxide. The preparation method comprises following steps: a ruthenium source solution is mixed with alkali liquor, and a precursor solution with pH being 9-12 is obtained; the precursor solution is subjected to a hydrothermal reaction or calcined, and nano ruthenium oxide is obtained. Prepared nano ruthenium oxide particles are controllable in morphology, that is, the nano ruthenium oxide particles are of a regular spherical structure or rod-like structure. The preparation method is simple, green and environmentally friendly and facilitates industrialization, the raw material cost is relatively low, prepared products have better performance, and the preparation method has good application prospect.

Description

technical field [0001] The invention relates to the technical field of nanometer materials. More specifically, it relates to a preparation method of nanometer ruthenium oxide. Background technique [0002] Nano ruthenium oxide is a noble metal oxide, which has high specific capacitance, high electrical conductivity and low resistivity, and is widely used in supercapacitors, catalysts and electrochemical catalysis. In supercapacitors, due to its high specific capacitance value, it has a great application in supercapacitors, and because of its small resistance and high conductivity, it has great advantages compared with other supercapacitors. On the catalyst, it is mainly used for dehydrogenation catalysis, currently reported are: CO oxidation, methanol oxidation and ammonia oxidation. In the application of electrochemical catalysis, it is mainly used in DSA type electrodes, which have a certain catalytic effect on HER (Hydrogen Evolution Reation) and OER (Oxygen Evolution R...

Claims

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Application Information

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IPC IPC(8): C01G55/00B82Y30/00B01F3/08
CPCC01G55/004C01P2002/01C01P2004/04C01P2004/32C01P2004/64C01P2006/12C01P2006/80B01F23/405B01F23/43B01F35/221422
Inventor 陈建峰杨辉煌王洁欣曾晓飞张亮亮
Owner BEIJING UNIV OF CHEM TECH
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