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Preparation method and application of iridium oxide nanoparticle catalyst

A nanoparticle and iridium oxide technology, which is applied in the field of preparation of iridium oxide nanoparticle catalysts, can solve the problems of small specific surface area of ​​iridium oxide, low catalytic activity and high preparation cost

Active Publication Date: 2020-07-07
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, the purpose of the present invention is to solve the problems of small iridium oxide specific surface area, low catalytic activity and high preparation cost. One of the purposes of the present invention is to provide a preparation method of iridium oxide nanoparticle catalyst

Method used

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  • Preparation method and application of iridium oxide nanoparticle catalyst
  • Preparation method and application of iridium oxide nanoparticle catalyst
  • Preparation method and application of iridium oxide nanoparticle catalyst

Examples

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Effect test

Embodiment 1

[0039] A preparation method of iridium oxide nanoparticle catalyst, specifically comprising the following steps:

[0040] Step 1: Place the FTO conductive substrate in acetone and ethanol in sequence and use ultrasonic cleaning for 5 to 15 minutes to treat it, then clean the ultrasonically treated FTO conductive substrate with deionized water and dry it, and finally clean the dried FTO conductive substrate with plasma The generator cleaning machine was processed in the air atmosphere for 15 minutes to obtain the processed FTO conductive substrate.

[0041] Step 2: disperse chloroiridic acid and polyvinylpyrrolidone in deionized water to form a mixed solution, the mass fraction of chloroiridic acid in the mixed solution is 0.5%, the massfraction of polyvinylpyrrolidone is 1%, draw 50 μ L of the Mix the solution and evenly coat the mixed solution on the treated FTO conductive substrate through a spin coater. When coating, the spin coater first uniformly glues the glue at 500r / mi...

Embodiment 2

[0046] A preparation method of iridium oxide nanoparticle catalyst, specifically comprising the following steps:

[0047] Step 1: Place the FTO conductive substrate in acetone and ethanol in sequence and use ultrasonic cleaning for 5 to 15 minutes to treat it, then clean the ultrasonically treated FTO conductive substrate with deionized water and dry it, and finally clean the dried FTO conductive substrate with plasma The generator cleaning machine was processed in the air atmosphere for 15 minutes to obtain the processed FTO conductive substrate.

[0048] Step 2: disperse chloroiridic acid and polyvinylpyrrolidone in deionized water to form a mixed solution, the mass fraction of chloroiridic acid in the mixed solution is 20%, the massfraction of polyvinylpyrrolidone is 20%, draw 50 μ L of the Mix the solution and evenly coat the mixed solution on the treated FTO conductive substrate through a spin coater. When coating, the spin coater first uniformly glues the glue at 500r / mi...

Embodiment 3

[0053] A preparation method of iridium oxide nanoparticle catalyst, specifically comprising the following steps:

[0054] Step 1: Place the FTO conductive substrate in acetone and ethanol in sequence and use ultrasonic cleaning for 5 to 15 minutes to treat it, then clean the ultrasonically treated FTO conductive substrate with deionized water and dry it, and finally clean the dried FTO conductive substrate with plasma The generator cleaning machine was processed in the air atmosphere for 15 minutes to obtain the processed FTO conductive substrate.

[0055] Step 2: disperse chloroiridic acid and polyvinylpyrrolidone in deionized water to form a mixed solution, the mass fraction of chloroiridic acid in the mixed solution is 5%, the massfraction of polyvinylpyrrolidone is 10%, draw 50 μ L of this Mix the solution and evenly coat the mixed solution on the treated FTO conductive substrate through a spin coater. When coating, the spin coater first uniformly glues the glue at 500r / mi...

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Abstract

The invention discloses a preparation method and application of an iridium oxide nanoparticle catalyst. A mixed solution containing a polymer and an iridium-containing compound is uniformly applied toa treated conductive substrate; calcining in an air atmosphere is carried out to convert the iridium-containing compound into iridium oxide and the polymer is decomposed at the same time; the iridiumoxide nanoparticle material which is small in particle size, amorphous and of a porous structure is obtained, polymers remaining on the iridium oxide nanoparticle material are removed through a plasma generator, and the surfaces of iridium oxide nanoparticles are rich in hydroxyl. The film formed by the polymer in the mixed solution is utilized to solve the problem that the iridium-containing compound is agglomerated to form large particles when being calcined to generate the iridium oxide nanoparticles, thereby obtaining the small-particle-size iridium oxide nanoparticles. Besides, the plasma generator is used for removing residual polymers in the calcining process, the contact area of the iridium oxide nano particles is increased, and therefore the catalytic efficiency of the iridium oxide nano particles is improved.

Description

technical field [0001] The invention belongs to the field of electrochemically decomposing water to produce hydrogen and oxygen evolution by noble metal catalysts, and in particular relates to a preparation method and application of an iridium oxide nanoparticle catalyst. Background technique [0002] With the rapid consumption of non-renewable energy such as coal, oil, and natural gas and the increasingly severe environmental pollution problems, people urgently need to use renewable clean energy such as wind energy and solar energy to replace fossil fuels. Due to the discontinuity and volatility of natural factors such as wind energy and solar energy, it is necessary to vigorously develop efficient and low-cost energy conversion and storage technologies, such as energy storage devices such as lithium-ion batteries or electrolytic water hydrogen production devices. Hydrogen is the most ideal green energy carrier in the future due to its high calorific value, cleanness and po...

Claims

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Application Information

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IPC IPC(8): B01J23/46B01J37/34B01J37/02B01J37/08B01J35/10C01G55/00B82Y30/00B82Y40/00C25B11/06C25B1/04
CPCB01J23/468B01J37/349B01J37/343B01J37/0215B01J37/08C01G55/004C25B1/04C01P2006/40C01P2004/64C25B11/075B01J35/33B01J35/40B01J35/61Y02E60/36Y02P20/133
Inventor 蔡金光关宏泰吕超胡存王双曾甯罗军洪石岩宋江锋张志
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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