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Polyvinyl alcohol supported palladium nanoflower water treatment catalyst and preparation method thereof

A polyvinyl alcohol and polyvinyl alcohol sponge technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of difficult recycling of catalytic materials, large pH changes, and secondary pollution. and other problems, to achieve the effect of realizing high value-added utilization, prolonging service life and reducing operating costs

Active Publication Date: 2021-01-12
南京溙科新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the catalytic material is often difficult to recycle because of its powder form, and it will remain in the wastewater and cause secondary pollution to the environment.
At the same time, wastewater containing dyes such as p-nitrophenol, methyl orange, and methylene blue is usually alkaline, and the pH value changes greatly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Carrier preparation

[0023] Cut the porous polyvinyl alcohol sponge (Japan AION company) into discs with a diameter of 12mm and a thickness of 2mm by using a laser cutting machine, and then use a plasma cleaning machine to perform plasma surface treatment on the porous polyvinyl alcohol sponge in an oxygen atmosphere for 2 minutes Finally, the carrier was obtained, and the above steps were repeated to obtain 50 pieces of carriers with a total mass of 1 g for later use;

[0024] (2) Preparation of active component precursor composite solution

[0025] Weigh 177mg palladium chloride and add 100mL deionized water and 100mL concentrated hydrochloric acid to obtain a palladium chloride solution with a concentration of 5mM; weigh 85mg silver nitrate and dissolve it in 50mL deionized water to obtain a silver nitrate solution with a concentration of 10mM; weigh 220mg ascorbic acid solution Obtain an ascorbic acid solution with a concentration of 50 mM in 25 mL of deionize...

Embodiment 2

[0031] (1) Carrier preparation

[0032] Cut the porous polyvinyl alcohol sponge (Japan AION company) into discs with a diameter of 12mm and a thickness of 2mm by using a laser cutting machine, and then use a plasma cleaning machine to perform plasma surface treatment on the porous polyvinyl alcohol sponge in an oxygen atmosphere for 5 minutes Finally, the carrier was obtained, and the above steps were repeated to obtain 50 pieces of carriers with a total mass of 1 g for later use;

[0033] (2) Preparation of active component precursor composite solution

[0034] Weigh 177mg palladium chloride and add 100mL deionized water and 100mL concentrated hydrochloric acid to obtain a palladium chloride solution with a concentration of 5mM; weigh 85mg silver nitrate and dissolve it in 50mL deionized water to obtain a silver nitrate solution with a concentration of 10mM; weigh 220mg ascorbic acid solution Obtain an ascorbic acid solution with a concentration of 50 mM in 25 mL of deionize...

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Abstract

The invention discloses a polyvinyl alcohol supported palladium nanoflower water treatment catalyst and a preparation method thereof. The catalyst takes porous polyvinyl alcohol sponge as a carrier and palladium nanoflowers as a catalytic active component. Based on the mass of the carrier, the mass percentage of the palladium nanoflower is 0.1%-0.5%. The preparation method comprises the followingsteps: cutting porous polyvinyl alcohol sponge into wafers with the diameter of 12mm and the thickness of 2mm by using a laser cutting instrument, then carrying out modification treatment on the surfaces of the wafers by using plasmas, dipping the polyvinyl alcohol sponge into a palladium nanoflower colloidal solution, and carrying out vacuum drying to obtain the polyvinyl alcohol supported palladium nanoflower water treatment catalyst. The catalyst is environment-friendly and low in cost, can efficiently catalyze and reduce water pollutants such as p-nitrophenol, methyl orange and methylene blue, and has a wide market application prospect.

Description

technical field [0001] The invention provides a polyvinyl alcohol-loaded palladium nano-flower water treatment catalyst and a preparation method thereof, which belong to the field of environment-friendly catalytic materials. Background technique [0002] p-nitrophenol, methyl orange, methylene blue, etc. are commonly used dyes, and 10% to 20% of them are discharged into the water environment during their use. Wastewater containing p-nitrophenol, methyl orange, methylene blue, etc. High, containing carcinogenic, mutagenic, and teratogenic substances; high chroma, inhibiting plant photosynthesis in aquatic systems: high COD value will lead to eutrophication of water bodies. Based on the above hazards, wastewater containing dyes such as p-nitrophenol, methyl orange, and methylene blue is an urgent problem in water treatment technology. The commonly used treatment methods include adsorption method, membrane separation method, ordinary oxidation method, biological method, etc., ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J23/44B01J35/10B01J37/06B01J37/34B01J37/02C02F1/30B82Y40/00C02F101/34C02F101/38C02F101/30C02F101/36
CPCB01J31/069B01J23/44B01J37/06B01J37/349B01J37/0201C02F1/30B82Y40/00C02F2101/30C02F2101/308C02F2101/34C02F2101/345C02F2101/36C02F2101/38C02F2101/40C02F2305/10B01J35/61B01J35/39Y02W10/37
Inventor 不公告发明人
Owner 南京溙科新材料科技有限公司
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