Pt/CoO monatomic catalyst as well as preparation method and applications thereof

A catalyst and atom technology, applied in the field of Pt/CoO single-atom catalyst and its preparation, can solve the problems of large usage, waste of precious metal resources, etc., and achieve the effects of efficient degradation, simple and environmentally friendly preparation process, and efficient atom utilization.

Inactive Publication Date: 2019-09-20
北京氦舶科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the methods of removing VOCs at home and abroad, the normal temperature catalytic oxidation method has been widely concerned because of its advantages of greenness, environmental protection and energy saving. It uses a catalyst to decompose VOCs into carbon dioxide, water and some inorganic salts at room temperature. The catalysts used are supported by precious metals, which use a large amount and waste precious metal resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Dissolve 2g of cobalt acetylacetonate in a mixed solvent consisting of 400mL of ethylene glycol and 100mL of deionized water at room temperature to obtain a mixed solution, stir at 300r / min for 2h, then place it in an autoclave, react at 180°C for 24h, and cool to After room temperature, it was centrifuged and washed three times with a polar solvent composed of acetone and deionized water at a volume ratio of 5:1, and the washed sample was dried in an oven at 50°C for 12 hours to prepare CoO nanosheets.

[0036] Add chloroplatinic acid and the above-mentioned CoO nanosheets to a mixed solvent composed of ethylene glycol and deionized water at a volume ratio of 5:1 to obtain a suspension, wherein the mass of platinum in chloroplatinic acid is 0.1% of the mass of the CoO nanosheets %, the mass volume ratio (g / L) of CoO nanosheets and ethylene glycol is 4g / L; After the suspension is stirred at a speed of 300r / min in a water bath at 40°C for 2h, the xenon light source is tur...

Embodiment 2

[0039] Dissolve 2g of cobalt acetylacetonate in a mixed solvent consisting of 400mL of ethylene glycol and 100mL of deionized water at room temperature to obtain a mixed solution, stir at 300r / min for 2h, then place it in an autoclave, react at 240°C for 24h, and cool to After room temperature, it was centrifuged and washed three times with a polar solvent composed of acetone and deionized water at a volume ratio of 5:1, and the washed sample was dried in an oven at 50°C for 12 hours to prepare CoO nanosheets.

[0040] Add chloroplatinic acid and the above-mentioned CoO nanosheets to a mixed solvent composed of ethylene glycol and deionized water at a volume ratio of 5:1 to obtain a suspension, wherein the mass of platinum in chloroplatinic acid is 0.1% of the mass of the CoO nanosheets %, the mass volume ratio (g / L) of CoO nanosheets and ethylene glycol is 4g / L; After the suspension is stirred at a speed of 300r / min in a water bath at 40°C for 2h, the xenon light source is tur...

Embodiment 3

[0043] Dissolve 2g of cobalt acetylacetonate in a mixed solvent consisting of 400mL of ethylene glycol and 100mL of deionized water at room temperature to obtain a mixed solution, stir at 300r / min for 2h, then place it in an autoclave, react at 240°C for 24h, and cool to After room temperature, it was centrifuged and washed three times with a polar solvent composed of acetone and deionized water at a volume ratio of 5:1, and the washed sample was dried in an oven at 50°C for 12 hours to prepare CoO nanosheets.

[0044] Add chloroplatinic acid and the above-mentioned CoO nanosheets to a mixed solvent composed of ethylene glycol and deionized water at a volume ratio of 5:1 to obtain a suspension, wherein the mass of platinum in chloroplatinic acid is 0.5% of the mass of the CoO nanosheets %, the mass volume ratio (g / L) of CoO nanosheets and ethylene glycol is 4g / L; After the suspension is stirred at a speed of 300r / min in a water bath at 40°C for 2h, the xenon lamp light source i...

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PUM

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Abstract

The invention particularly relates to a Pt / CoO nanosheet catalyst as well as a preparation method and applications thereof. The catalyst is prepared by the following steps: mixing a CoO nanosheet, a platinum precursor, ethylene glycol and deionized water, heating the mixture in a water bath with stirring, carrying out a photoreduction reaction, and washing and drying the reaction product to obtain the Pt / CoO nanosheet catalyst. The method is simple, environmentally friendly and easy to industrialize, Pt of the prepared catalyst is in atomic-scale dispersion on the surface of the CoO nanosheet, the content of platinum is low, and various VOCs can be degraded at room temperature.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a Pt / CoO single-atom catalyst and its preparation method and application. Background technique [0002] VOCs (Volatile Organic Compounds, volatile organic compounds) are one of the common pollutants emitted by petrochemical, pharmaceutical, printing, painting and other industrial production processes and motor vehicles. With the development of industry, the emission of VOCs is increasing day by day, and its treatment has become one of the hot spots in the current international environment. VOCs are mostly carcinogenic, teratogenic, and mutagenic, which are potentially harmful to the environment and seriously endanger people's health. [0003] At present, in the methods of removing VOCs at home and abroad, the normal temperature catalytic oxidation method has been widely concerned because of its advantages of greenness, environmental protection and energy saving. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J37/16B01D53/86B01D53/44
CPCB01J23/8913B01J37/16B01D53/8687B01D2257/708B01J35/399B01J35/23
Inventor 关超阳郎嘉良赵刚黄翟
Owner 北京氦舶科技有限责任公司
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