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Embedded hollow magnetic imprinted photocatalytic nanoreactor and preparation method thereof

A nano-reactor and photocatalytic technology, applied in chemical instruments and methods, chemical/physical processes, light water/sewage treatment, etc., can solve the problem of unsatisfactory photocatalytic activity and achieve photocatalytic activity and selectivity, Avoid the effects of low photocatalytic activity and excellent magnetic separation characteristics

Inactive Publication Date: 2017-01-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the photocatalytic activity of the vast majority of organic photocatalytic active substances is not ideal. Among many organic photocatalytic active substances, poly-3,4-ethylenedioxythiophene (PEDOT) has a relatively high activity and has a simple molecular structure. It has the advantages of narrow gap, stable chemical properties, and unique photoelectric properties, and is one of the most popular research materials at present.

Method used

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  • Embedded hollow magnetic imprinted photocatalytic nanoreactor and preparation method thereof
  • Embedded hollow magnetic imprinted photocatalytic nanoreactor and preparation method thereof
  • Embedded hollow magnetic imprinted photocatalytic nanoreactor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] (1) ZnFe 2 o 4 Preparation: 4mmolFeCl 3 ·6H 2 O and 2 mmol ZnCl 2 Add it into 70mL of ethylene glycol to form a clear solution, then add 30mmol ammonium acetate, and stir vigorously at room temperature for 0.5h, then put the mixture into a stainless steel autoclave and seal it, keep it at 210°C for 72h, and wait for After the reactor was cooled to room temperature, the solid product was collected with a magnet and washed, and then the solid product was vacuum-dried at 40°C for 12 hours to obtain ZnFe 2 o 4 .

[0045] (2) Preparation of poly-3,4-ethylenedioxythiophene (PEDOT): Dissolve 3.8g of bis(2-ethylhexyl)sodium sulfosuccinate in 15mL of n-hexane, and then add 0.47mL of 10.2mol L -1 3,4-ethylenedioxythiophene of 0.45g was added to the above solution, and after ultrasonication for 10min, mechanical stirring was performed for 12h, and then the product was washed and dried at 40 Vacuum-dried at ℃ for 12 hours to obtain poly-3,4-ethylenedioxythiophene (PEDOT). ...

Embodiment 2

[0053] Carry out the same steps as in the preparation process of Example 1, except that the amount of Ag-PEDOT added in step (4) is 0.001g, 0.005g, 0.01g, 0.05g, and 0.1g, respectively, to prepare different embedded hollow magnetic imprints Photocatalytic nanoreactor, to investigate the effect of different additions of Ag-PEDOT on the photocatalytic activity of the embedded hollow magnetic imprinted photocatalytic nanoreactor, according to the step (6) in Example 1 to investigate the activity of photodegradation tetracycline solution. The photocatalytic effect is as Figure 8 As shown, it can be seen that when the amount of Ag-PEDOT added is 0.01g, the embedded hollow magnetic imprinted photocatalytic nanoreactor has the best photodegradation effect on tetracycline.

Embodiment 3

[0055] Carry out the same steps according to the preparation process of Example 1, the difference is that the microwave polymerization time in step (4) is 0.1h, 0.5h, 1h, 1.5h, 2h respectively, to prepare different embedded hollow magnetic imprinted photocatalytic nanoreactors , to investigate the influence of different microwave polymerization times on the photocatalytic activity of the embedded hollow magnetically imprinted photocatalytic nanoreactor, and to investigate the activity of the photodegradation tetracycline solution according to the step (6) in Example 1. The photocatalytic effect is as Figure 9 As shown, it can be seen that the embedded hollow magnetic imprinted photocatalytic nanoreactor prepared when the microwave polymerization time is 1h has the best photodegradation effect on tetracycline.

[0056] From figure 1 It can be seen in: Figure a and ZnFe 2 o 4 The standard spectrum of Ag (PDF#65-3111) is consistent, and Figure b is consistent with the standar...

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Abstract

The invention provides an embedded hollow magnetic imprinted photocatalytic nanoreactor and a preparation method thereof. The method comprises steps as follows: step 1, preparation of ZnFe2O4; step 2, preparation of PEDOT (poly(3,4-ethylenedioxythiophene)); step 3, preparation of Ag-PEDOT; step 4, preparation of the embedded hollow magnetic imprinted photocatalytic nanoreactor. PEDOT is adopted as a photocatalytic active substance and embedded in an organic imprinted layer as a functional monomer, so that a target object entering an imprinted hole through selective recognition can directly contact with the PEDOT and is degraded, the problem of low photocatalytic activity of a common imprinted photocatalytic material is solved, and the photocatalytic activity and selectivity are both improved.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, and in particular relates to an embedded hollow magnetic imprinted photocatalytic nano-reactor and a preparation method thereof. Background technique [0002] Ordinary photocatalytic nanoreactors cannot selectively remove specific targets from many pollutants, while surface imprinting technology can endow ordinary photocatalytic nanoreactors with selective removal capabilities, but since the surface imprinting layer will cover the photocatalytic active sites of inorganic semiconductors Therefore, the present invention uses organic imprinting technology. The organic imprinting photocatalytic system uses substances without photocatalytic activity as carrier materials, and the surface is directly covered with organic imprinting layer. At the same time, organic photocatalytic active substances Introduced into the organic imprinted layer and exposed to the inside of the impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/12C02F1/30C02F1/32A62D3/17
CPCB01J19/12A62D3/17B01J19/123C02F1/30C02F1/32C02F2101/38
Inventor 逯子扬王友山朱志宋旼珊赵晓旭高乃玲闫永胜霍鹏伟
Owner JIANGSU UNIV