A polyaniline-coated phenolic resin catalyst with core-shell structure and preparation method thereof

A technology of phenolic resin and core-shell structure, which is applied in the field of photocatalysis, can solve the problems that biological toxicity cannot be ignored, and achieve the effects of efficient regeneration of NADH, accelerated transfer and utilization, and enhanced visible light response range

Active Publication Date: 2022-03-18
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most photocatalysts use a large number of metals, which have a certain inhibitory effect on enzymatic reactions. At the same time, the poisonous effect of metals on organisms cannot be ignored, while the regeneration of NADH by non-metallic photocatalysts is rarely reported.

Method used

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  • A polyaniline-coated phenolic resin catalyst with core-shell structure and preparation method thereof
  • A polyaniline-coated phenolic resin catalyst with core-shell structure and preparation method thereof
  • A polyaniline-coated phenolic resin catalyst with core-shell structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] To prepare RF@PANI-1, the content of PANI added is 1%:

[0031] Add 1.5mmol of resorcinol to a mixed solution containing 40mL of water and 10mL of ethanol and stir for 20min, then add 1.5mmol of formaldehyde solution with a concentration of 36wt% dropwise, stir at room temperature for 60min, and finally add 18wt% of ammonia water 0.2 mL, and stirred at 40°C for 24 hours, centrifuged and washed to obtain phenolic resin balls; 250 mg of phenolic resin balls were added to a mixed solution containing 20 mL of water and 20 mL of ethanol, kneaded and ultrasonically stirred for 30 min, then 2.5 mg of polyaniline was added and stirred for 10 min , and then use a 300w xenon lamp to continue to irradiate for 2 hours under continuous stirring in the full range, and finally centrifuge and wash to obtain RF@PANI-1.

Embodiment 2

[0033] To prepare RF@PANI-2, the content of PANI added is 2%:

[0034] Add 1.5mmol of resorcinol to a mixed solution containing 40mL of water and 10mL of ethanol and stir for 20min, then add 1.5mmol of formaldehyde solution with a concentration of 36wt% dropwise, stir at room temperature for 60min, and finally add 18wt% of ammonia water 0.2 mL, and stirred at 40°C for 24 hours, centrifuged and washed to obtain phenolic resin balls; 250 mg of phenolic resin balls were added to a mixed solution containing 20 mL of water and 20 mL of ethanol and stirred ultrasonically for 30 minutes, then 5 mg of polyaniline was added and stirred for 10 minutes. Then use a 300w xenon lamp to continue to irradiate for 2 hours under continuous stirring in the full band, and finally centrifuge and wash to obtain RF@PANI-2.

Embodiment 3

[0036] To prepare RF@PANI-3, the content of PANI added is 3%:

[0037] Add 1.5mmol of resorcinol to a mixed solution containing 40mL of water and 10mL of ethanol and stir for 20min, then add 1.5mmol of formaldehyde solution with a concentration of 36wt% dropwise, stir at room temperature for 60min, and finally add 18wt% of ammonia water 0.2 mL, and stirred at 40°C for 24 hours, centrifuged and washed to obtain phenolic resin balls; 250 mg of phenolic resin balls were added to a mixed solution containing 20 mL of water and 20 mL of ethanol, kneaded and ultrasonically stirred for 30 min, then 7.5 mg of polyaniline was added and stirred for 10 min , and then use a 300w xenon lamp to continue to irradiate for 2 hours under continuous stirring in the full band, and finally centrifuge and wash to obtain RF@PANI-3.

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Abstract

The invention provides a catalyst based on polyaniline coated on a phenolic resin material and a preparation method thereof. The catalyst is well applied in the photocatalytic regeneration of nicotinamide adenine dinucleotide (NADH). In the invention, the polyaniline substance is light-deposited on the surface of the phenolic resin through a photodeposition method, that is, a core-shell structure catalyst of the polyaniline-coated phenolic resin material is obtained. The method of the present invention can change the core diameter and shell thickness of the core-shell structure by simply changing the amount of the substance, and the prepared core-shell structure polyaniline-coated phenolic resin material has fast electron hole transfer and a special bandgap structure , showing excellent catalytic activity. By applying it to the photocatalytic regeneration NADH system, high regeneration efficiency was found, and compared with other expensive metal materials with non-metallic characteristics, it has lower economic cost and good catalytic activity.

Description

technical field [0001] The invention relates to a catalyst for photocatalytic regeneration of nicotinamide adenine dinucleotide (NADH) and a preparation method thereof, belonging to the field of photocatalysis. Background technique [0002] As an important coenzyme, nicotinamide adenine dinucleotide (NADH) plays an important role in the biocatalysis industry. For example, in the production of chemical and pharmaceutical industries, most redox enzymatic reactions require NADH to provide electrons and hydrogen. Therefore, the construction of an efficient regenerative NADH system can continuously provide electrons and hydrogen for the reaction, which can greatly promote the industrialization of biocatalysis. [0003] In the system of regenerating NADH, the photocatalytic reaction has attracted the attention of researchers due to its clean and green energy. The photocatalytic regeneration of NADH reaction is a clean technology based on light-activated catalysts for reactions. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06C08J3/12C07H19/207C07H1/00C08L61/06C08L79/02
CPCB01J31/06B01J35/004C08J3/126C07H19/207C07H1/00C08J2361/06C08J2479/02B01J2231/646Y02P20/584
Inventor 周亮雷菊英蔡燕楠丁宁恺刘勇弟张金龙
Owner EAST CHINA UNIV OF SCI & TECH
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