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Preparation method of platinum-ruthenium-titanium composite nanoparticles by using microemulsion method

A technology of composite nanoparticle and microemulsion method, which is applied in the field of nanocatalytic materials, can solve the problems of high cost, short life, poor chemical stability, etc., and achieve the effect of enhancing conductivity

Pending Publication Date: 2020-08-14
江苏智诚达环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Material doping and modification can effectively degrade pollutants. Due to the problems of poor chemical stability and high cost of traditional single metal materials, the electrode loaded with metal oxide on the metal surface also has problems such as short life, detachment and inactivation of electrode coating, and high cost.

Method used

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  • Preparation method of platinum-ruthenium-titanium composite nanoparticles by using microemulsion method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Under vigorous mechanical stirring, 3.0g of cetyltrimethylammonium bromide was added to 50.0ml of toluene to obtain a milky white suspension; 0.07g of H 2 PtCl 6 Add the precursor solution dropwise to the suspension in step a, and stir overnight to obtain an orange-yellow solution; add ammonia water to the solution in step b, stir for 2 hours, and then add TiCl with pH=4 to the above reaction mixture 3 (0.7mL), stirred for 10min to obtain a pale yellow solution; RuCl was added 3 (0.3g) solution is added in step c solution, stirs to obtain black microemulsion; Above-mentioned microemulsion is centrifuged 10 minutes, obtains platinum ruthenium titanium composite oxide nanoparticle; Gained platinum ruthenium titanium composite oxide nanoparticle is washed with pure water , and centrifuged three times to remove the surfactant, and dried overnight at 100°C to obtain the product.

Embodiment 2

[0018] Under vigorous mechanical stirring, 4.5g of cetyltrimethylammonium bromide was added to 120.0ml of toluene to obtain a milky white suspension; 0.09g of H 2 PtCl 6 Add the precursor solution dropwise to the suspension in step a, and stir overnight to obtain an orange-yellow solution; add NaOH solution to the solution in step b, stir for 2 hours, and then add TiCl with pH=4 to the above reaction mixture 3 (1mL), stirred for 10min to obtain a light yellow solution; RuCl was added 3 (0.5g) solution is added in step c solution, stirs to obtain black microemulsion; Above-mentioned microemulsion is centrifuged 10 minutes, obtains platinum ruthenium titanium composite oxide nanoparticle; Gained platinum ruthenium titanium composite oxide nanoparticle is washed with ethanol, And centrifuged 5 times to remove the surfactant, and dried overnight at 100°C to obtain the product.

Embodiment 3

[0020] Under vigorous mechanical stirring, 5g of cetyltrimethylammonium bromide was added to 200.0ml of toluene to obtain a milky white suspension; step b, 0.12g of H 2 PtCl 6 Add the precursor solution dropwise to the suspension in step a, and stir overnight to obtain an orange-yellow solution; add the KOH solution to the solution in step b, stir for 2 hours, and then add TiCl with pH=4 to the above reaction mixture 3 (2mL), stirred for 10min to obtain a pale yellow solution; RuCl was added 3 (0.8g) solution is added in step c solution, stirs to obtain black microemulsion; Above-mentioned microemulsion is centrifuged 10 minutes, obtains platinum ruthenium titanium composite oxide nanoparticle; Gained platinum ruthenium titanium composite oxide nanoparticle is washed with acetone, And centrifuged 5 times to remove the surfactant, and dried overnight at 100°C to obtain the product.

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Abstract

The invention relates to a preparation method of a platinum-ruthenium-titanium electrode by a microemulsion method. The preparation method comprises the following steps: step a, adding 3.0-7.0 g of hexadecyl trimethyl ammonium bromide into 50.0-250ml of toluene under violent mechanical stirring to obtain a milk white turbid liquid of 0.012-0.14 g / mL; step b, dropwise adding 0.07-0.15 g of an H2PtCl6 precursor solution (0.054-0.115 g / mL) into the turbid liquid obtained in the step a, and stirring overnight to obtain an orange-yellow solution; step c, adding excessive 0.1-0.2 g / mL of alkali liquor into the solution obtained in the step b, stirring for 2 hours, then adding TiCl3 (0.07-3ml) of which the pH value is equal to 4 into the reaction mixture, and stirring for 10 minutes to obtain a faint yellow solution; step d, adding (0.3-1 g) of RuCl3 (0.06-015 g / mL) solution into the solution obtained in the step c, and stirring to obtain a black microemulsion; step e, centrifuging the micro-emulsion for 10 to 30 minutes to obtain platinum-ruthenium-titanium composite oxide nano-particles; and step f, washing the obtained platinum-iridium-titanium composite oxide nanoparticles with the solvent, centrifuging for 3-5 times to remove the surfactant, and drying overnight at 100 DEG C to obtain the product.

Description

technical field [0001] The invention belongs to the field of nano-catalysis materials, and relates to a method for preparing platinum-ruthenium-titanium composite oxide nanoparticles by a microemulsion method. Background technique [0002] Electrocatalytic oxidation technology is currently more commonly used, such as Au, Ag, Pt, Pd and other electrodes with noble metals as catalysts, which have high treatment efficiency and long electrode life, and are applied to organic wastewater treatment. There are also titanium-based surfaces coated with metal oxide coatings such as PbO 2 , SnO 2 and IrO 2 Wait. Material doping and modification can effectively degrade pollutants. Due to the problems of poor chemical stability and high cost of traditional single metal materials, the electrode loaded with metal oxide on the metal surface also has problems such as short life, detachment and inactivation of electrode coating, and high cost. . On the basis of the platinum ruthenium irid...

Claims

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Application Information

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IPC IPC(8): B01J23/46B01J35/00B01J37/03B82Y30/00B82Y40/00
CPCB01J23/462B01J37/038B01J23/002B82Y30/00B82Y40/00B01J2523/00B01J35/33B01J35/23B01J2523/47B01J2523/821B01J2523/828
Inventor 牛连勇
Owner 江苏智诚达环保科技有限公司