Photocatalytic diclofenac purification membrane and preparation method thereof

A technology of diclofenac and photocatalysis, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of increasing operational complexity and cost, MOFs instability, structural degradation, etc., and achieve strong visible light The effect of inducing redox capacity

Active Publication Date: 2021-07-20
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is because many MOFs are unstable in aqueous environments, leading to structural degradation
In addition, it is only adsorption, and when the adsorption saturation is reached, the adsorbent needs to be replaced, which increases the complexity and cost of the operation

Method used

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  • Photocatalytic diclofenac purification membrane and preparation method thereof
  • Photocatalytic diclofenac purification membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A photocatalytic diclofenac purification membrane and a preparation method thereof, comprising the steps of:

[0026] 1. Fully mix 0.204g of yttrium vanadate and 1.029g of potassium zirconium sulfate trihydrate and calcinate at 1200°C for 20h, then add 1.44g of mellitic acid trianhydride to 25mL of dimethylacetamide and formic acid In a 2:1 mixed solvent, the solution was sonicated until it was completely dissolved to obtain a metal-organic framework material MOFs-YVZr synthesis liquid.

[0027] 2. Add 40g of yttria-stabilized zirconia powder and 160g of thermoplastic polyurethane elastomer into a planetary grinder and grind for 36 hours at 240°C to obtain a melt. After vacuum degassing the melt, spin at a melt temperature of 245°C. Under the conditions of voltage of 22kV, flow rate of 1.2mL / h, receiving distance of 22cm, ambient temperature of 10°C, and relative humidity of 25%, a highly elastic doped polyurethane nanofiber membrane was obtained by melt electrospinning...

Embodiment 2

[0030] A photocatalytic diclofenac purification membrane and a preparation method thereof, comprising the steps of:

[0031] 1. Fully mix 0.163g of yttrium vanadate and 0.823g of potassium zirconium sulfate trihydrate and calcinate at 1100°C for 18h, then add 1.152g of mellitic acid trianhydride to 25mL of dimethylacetamide and formic acid In a 3:1 mixed solvent, the solution was sonicated until it was completely dissolved to obtain a metal-organic framework material MOFs-YVZr synthesis liquid.

[0032] 2. Add 40g of yttria-stabilized zirconia powder and 120g of thermoplastic polyurethane elastomer into a planetary grinder and grind for 24 hours at 230°C to obtain a melt. After vacuum degassing the melt, spin at a melt temperature of 250°C. Under the conditions of a voltage of 20kV, a flow rate of 1.0mL / h, a receiving distance of 20cm, an ambient temperature of 0°C, and a relative humidity of 30%, a highly elastic doped polyurethane nanofiber membrane was obtained by melt elec...

Embodiment 3

[0035] A photocatalytic diclofenac purification membrane and a preparation method thereof, comprising the steps of:

[0036] 1. Fully mix 0.245g of yttrium vanadate and 1.235g of potassium zirconium sulfate trihydrate and calcinate at 1500°C for 24h, then add 1.728g of mellitic acid trianhydride to 25mL of dimethylacetamide and formic acid In a 1:1 mixed solvent, the solution was sonicated until it was completely dissolved to obtain a metal-organic framework material MOFs-YVZr synthesis liquid.

[0037]2. Add 40g of yttria-stabilized zirconia powder and 200g of thermoplastic polyurethane elastomer into a planetary grinder and grind for 48 hours at 250°C to obtain a melt. After vacuum degassing the melt, spin at a melt temperature of 230°C. Under the conditions of voltage of 25kV, flow rate of 1.5mL / h, receiving distance of 25cm, ambient temperature of 15°C, and relative humidity of 20%, a highly elastic doped polyurethane nanofiber membrane was obtained by melt electrospinning...

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Abstract

The invention belongs to the technical field of sewage treatment, and discloses a photocatalytic diclofenac purification membrane and a preparation method thereof. The preparation method comprises the following steps: preparing a high-elastic polyurethane-doped nanofiber membrane by utilizing melt electrospinning, and depositing a metal-organic framework material MOFs-YVZr on the outer surface to obtain the photodegradation catalytic membrane. The film can efficiently catalyze the degradation of diclofenac in water under the irradiation of visible light, and is suitable for environments with different pH values.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a photocatalytic diclofenac purification membrane and a preparation method thereof. Background technique [0002] As the global population continues to grow, the demand for pharmaceuticals and personal care products continues to grow, raising concerns about their negative impact on the environment. NSAIDs are a class of ingredients in personal care products commonly used to reduce pain and inflammation. NSAIDs are widely available as over-the-counter medicines in almost all pharmacies. Therefore, their presence in the environment cannot be ignored due to its potential to contaminate drinking water. [0003] Diclofenac is one of the most popular NSAIDs and is available as tablets, extended-release capsules, injections, ointments, emulsions, suppositories, eye drops, etc. for oral or topical use. Despite its analgesic efficacy, diclofenac is an environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J31/22B01J35/06B01J37/34B01J37/02C02F1/30C02F101/34C02F101/36C02F101/38
CPCB01J31/38B01J31/1691B01J23/002B01J35/065B01J35/004B01J35/0013B01J37/342B01J37/0203C02F1/30C02F2305/10C02F2101/34C02F2101/36C02F2101/38B01J2531/56B01J2531/48B01J2531/36B01J2531/0216
Inventor 汤佳鹏刘希文葛彦朱俐
Owner NANTONG UNIVERSITY
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