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Catalyst based on platinum oxide alloy loaded boron and nitrogen doped diamond as well as preparation method and application thereof

A technology of nitrogen doping and diamond, applied in the direction of electrolysis components, electrodes, electrolysis process, etc., can solve the problems of short life and consumption, and achieve the effect of low cost, good catalytic performance and simple method

Active Publication Date: 2019-01-01
杭州热威洁净技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead dioxide has good electrical conductivity, but it is easily corroded and consumed by the generated ozone during use, resulting in a short lifespan
[0006] At present, there is no research report related to platinum oxide alloy and boron, nitrogen doped diamond as a catalyst for electrolysis of water to produce ozone

Method used

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  • Catalyst based on platinum oxide alloy loaded boron and nitrogen doped diamond as well as preparation method and application thereof
  • Catalyst based on platinum oxide alloy loaded boron and nitrogen doped diamond as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation based on platinum oxide alloy loaded boron, nitrogen-doped diamond catalyst, comprising the following steps:

[0034]1) Place 2.5g of nano-diamonds with a size of 80-100nm in a plasma reaction furnace, the plasma voltage is 180W, the reaction temperature is 170°C, and high-purity argon gas is introduced into the plasma reaction furnace under vacuum conditions to form Plasma atmosphere, the vacuum degree is 50Pa, the nano-diamond is activated in the plasma atmosphere for 2h, and the activated nano-diamond is obtained;

[0035] 2) Dissolve 20g of N-butylpyridine tetrafluoroborate in 80mL of distilled water, then add 1.5g of activated nano-diamonds in step 1), and ultrasonically disperse the dispersion for 1.5h, then let it stand for 20h, The dispersion was filtered to remove excess free N-butylpyridine tetrafluoroborate, and vacuum-dried at 80° C. to obtain 2.1 g of N-butylpyridine tetrafluoroborate-coated activated nano-diamond material;

[0036] 3) Put 1.5g...

Embodiment 2

[0042] Preparation based on platinum oxide alloy loaded boron, nitrogen-doped diamond catalyst, comprising the following steps:

[0043] 1) Place 2.0g of nano-diamonds with a size of 150-180nm in a plasma reactor, the plasma voltage is 230W, the reaction temperature is 200°C, and high-purity nitrogen gas is introduced into the plasma reactor under vacuum conditions to form plasma Bulk atmosphere, the vacuum degree is 80Pa, the nano-diamond is activated in the plasma atmosphere for 1h, and the activated nano-diamond is obtained;

[0044] 2) Dissolve 10g of 1-butyl-3-methylimidazolium tetrafluoroborate in 50mL of distilled water, then add 1.0g of activated nano-diamond in step 1), and ultrasonically disperse the dispersion for 0.5h, then statically Set aside for 30 h, filter the dispersion to remove excess free 1-butyl-3-methylimidazolium tetrafluoroborate, and dry it in vacuum at 60°C to obtain 1.4 g of 1-butyl-3-methylimidazole Tetrafluoroborate coated activated nano-diamond ...

Embodiment 3

[0051] Preparation based on platinum oxide alloy loaded boron, nitrogen-doped diamond catalyst, comprising the following steps:

[0052] 1) Place 1.5g of nano-diamonds with a size of 200-230nm in a plasma reaction furnace, the plasma voltage is 260W, the reaction temperature is 250°C, and high-purity argon gas is introduced into the plasma reaction furnace under vacuum conditions to form Plasma atmosphere, the vacuum degree is 30Pa, the nano-diamond is activated for 1h in the plasma atmosphere, and the activated nano-diamond is obtained;

[0053] 2) Dissolve 10g of 1-hexyl-3-methylimidazolium tetrafluoroborate in 100mL of distilled water, then add 1.0g of activated nano-diamond in step 1), and ultrasonically disperse the dispersion for 2.5h, then let it stand After 12 h, the dispersion was filtered to remove excess free 1-hexyl-3-methylimidazolium tetrafluoroborate, and dried in vacuum at 70°C to obtain 1.3 g of 1-hexyl-3-methylimidazolium tetrafluoroborate Salt-coated activa...

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Abstract

The invention discloses a catalyst based on a platinum oxide alloy loaded boron and nitrogen doped diamond as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps of dissolving a platinum metal salt and a non-noble metal salt in distilled water, then adding a boron and nitrogen doped diamond, and ultrasonically dispersing to obtain dispersion liquid; and adding the obtained dispersion liquid into a hydrothermal kettle to carry out a hydrothermal reaction, cooling to a room temperature, then standing, depositing, washing a deposit with water and ethanol, and vacuum-drying to obtain a product. According to the catalyst prepared by the preparation method, the use level of platinum is low; further, a non-noble metal is alsoused as a catalytic active component; the synergistic catalytic action is formed by the combination of a platinum oxide alloy and the boron doped diamond; the electronic structures of the platinum oxide alloy and the boron doped diamond are effectively regulated and optimized; thus, the production of ozone is more facilitated; the catalyst has high electrocatalytic activity and ultrahigh stability; the ozone generating current efficiency of an anode of an electrolytic ozone generator is obviously improved; and through being proven, the catalyst provided by the invention has the performance, inthe electrolysis of water to catalytically produce ozone, superior to that of lead dioxide, and has a wide application prospect.

Description

technical field [0001] The invention relates to a catalyst based on platinum oxide alloy loaded with boron and nitrogen doped diamond, its preparation method and application. Background technique [0002] Ozone (ozone, O 3 ), also known as active oxygen, is an unstable light blue gas at room temperature. Due to the strong oxidizing properties of ozone, the reaction will generate oxygen at the same time, so that a large number of anaerobic bacteria cannot survive. Ozone is a broad-spectrum, efficient, fast, safe, and non-secondary pollution sterilizing gas. Its sterilization speed is fast, it has no toxic and side effects, and it will not produce drug resistance, so it is widely used in medical and health care. [0003] Ozone is easy to decompose and cannot be stored, so it needs to be produced and used on site, so any place where ozone can be used must use an ozone generator. The traditional ozone generation technology is mostly the corona discharge method, which produce...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/13
CPCC25B1/13C25B11/091
Inventor 钟兴王建国曹勇勇
Owner 杭州热威洁净技术有限公司
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