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Reactive electro-catalytic membrane based on non-free radical oxidation as well as preparation method and application of reactive electro-catalytic membrane

An electrocatalytic membrane and reactivity technology, applied in the field of reactive electrocatalytic membrane and its preparation, achieves the effects of simple preparation method, prolonging service life and remarkable electrocatalytic oxidation effect

Active Publication Date: 2021-10-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few methods to directly generate singlet oxygen by electrocatalysis

Method used

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  • Reactive electro-catalytic membrane based on non-free radical oxidation as well as preparation method and application of reactive electro-catalytic membrane
  • Reactive electro-catalytic membrane based on non-free radical oxidation as well as preparation method and application of reactive electro-catalytic membrane
  • Reactive electro-catalytic membrane based on non-free radical oxidation as well as preparation method and application of reactive electro-catalytic membrane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing a reactive electrocatalytic membrane based on non-radical oxidation provided in this embodiment includes the following steps:

[0032] (1) Porous titanium substrate pretreatment:

[0033] First, polish the porous titanium substrate with 250-mesh sandpaper until it is bright, and then treat it with 5wt.% NaOH solution at 80°C for 60 minutes, then transfer it to 10wt.% oxalic acid solution for 30 minutes, and finally rinse it repeatedly with ultrapure water, and put it in an oven dry reserve;

[0034] (2) Configure a precursor solution containing Pd metal:

[0035] Dissolve 0.25g of palladium nitrate dihydrate in 25mL of deionized water, mix and stir evenly to obtain the Pd metal precursor solution;

[0036] (3) Preparation of a reactive electrocatalytic membrane loaded with an electrocatalytic active layer:

[0037] Using the impregnation method, put the porous titanium treated in step (1) into the precursor solution containing Pd metal configur...

Embodiment 2

[0041] A method for preparing a reactive electrocatalytic membrane based on non-radical oxidation provided in this embodiment includes the following steps:

[0042] (1) Porous titanium substrate pretreatment:

[0043] First, polish the porous titanium substrate with 250-mesh sandpaper until it is bright, treat it with 5wt.% NaOH solution at 80°C for 60 minutes, then transfer it to 10wt.% oxalic acid solution for 30 minutes, and finally rinse it repeatedly with ultrapure water, and put it in an oven to dry dry reserve;

[0044] (2) Configure a precursor solution containing Pd metal:

[0045] Dissolve 0.25g of palladium nitrate dihydrate in 25mL of deionized water, mix and stir evenly to obtain the Pd metal precursor solution;

[0046] (3) Preparation of reactive electrocatalytic membranes loaded with electrocatalytically active layers:

[0047] Using the spraying method, the precursor solution containing Pd metal configured in step (2) was sprayed at a rate of 0.05mL / cm 2 S...

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Abstract

The invention discloses a reactive electro-catalytic membrane based on non-free radical oxidation and a preparation method and application thereof, and belongs to the technical field of electro-catalytic membranes. According to the method, a Pd metal precursor solution is directly loaded on a pretreated porous titanium substrate through an impregnation method or a spraying method, an electro-catalytic active layer of Pd metal with a micro-nano structure and an oxide of the Pd metal is formed through a reaction, and therefore the reactive electro-catalytic membrane is prepared. The preparation method is simple, and the prepared reactive electro-catalytic membrane can efficiently and stably generate non-free radical oxide singlet oxygen with high selectivity, has an efficient electro-catalytic oxidation effect on refractory organics in a water body, and can be suitable for rapid treatment of the refractory organics in the water body.

Description

technical field [0001] The invention belongs to the field of electrocatalytic membrane technology and environmental functional materials, and specifically relates to a reactive electrocatalytic membrane based on non-free radical oxidation and its preparation method and application. Background technique [0002] With the widespread use of drugs, antibiotics, and personal care products, a large number of refractory organic pollutants enter the municipal pipe network through various channels. Due to the refractory biodegradability of these trace refractory organic pollutants, it is usually difficult for conventional wastewater treatment plants to completely remove these refractory organic pollutants, resulting in the discharge of these refractory organic pollutants and their residues into the water environment . Most of them are highly toxic, carcinogenic, teratogenic, and even mutagenic, thus seriously threatening the ecological environment and human health. [0003] As an e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F101/30
CPCC02F1/46109C02F1/4672C02F2001/46142C02F2001/46152C02F2101/30C02F2305/023Y02E60/50
Inventor 王志伟任乐辉陈妹李洋
Owner TONGJI UNIV