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PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst with high photocatalytic activity and selectivity and preparation method of PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst

A technology of photocatalyst and catalytic activity, applied in the direction of organic compound/hydride/coordination complex catalyst, chemical instrument and method, physical/chemical process catalyst, etc., can solve the problem of selective removal, achieve good selectivity, High photocatalytic activity, photocatalytic activity improvement effect

Inactive Publication Date: 2017-02-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary CdS cannot selectively remove specific pollutants from many organic pollutants. For this reason, we introduced surface imprinting technology

Method used

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  • PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst with high photocatalytic activity and selectivity and preparation method of PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst
  • PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst with high photocatalytic activity and selectivity and preparation method of PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst
  • PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst with high photocatalytic activity and selectivity and preparation method of PEDOT/CdS/Fe3O4/HNT imprinted photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Preparation of modified halloysite nanotubes (Modified HNT): Weigh 6g of halloysite nanotubes (HNT) into a three-necked flask containing 60mL of concentrated sulfuric acid and 20mL of concentrated nitric acid, and mechanically Stir for 6 hours, then pour the resulting solution into a large beaker, adjust the pH to 5 with 1 mol / L hydrochloric acid solution, filter and dry it and record it as acid-treated HNT; then add 3 g of the above-mentioned acid-treated HNT to 100 mL of toluene, Then add 3mL aminopropyltriethoxysilane, pass N 2 , mechanically stirred at 70° C. for 12 h, washed the product and dried at 60° C. for 12 h to obtain modified halloysite nanotubes (Modified HNT).

[0048] (2) Fe 3 o 4 Preparation of / HNT: Weigh 0.2g of the above-mentioned Modified HNT and dissolve it in 25mL of ethylene glycol, ultrasonically disperse for 20min, then add 1.24g of ferric nitrate nonahydrate, continue ultrasonically for 20min, then add 1.5g of sodium acetate, 0.4g of pol...

Embodiment 2

[0057] Carry out the same steps of the preparation process of Example 1, except that the addition amount of poly-3,4-ethylenedioxythiophene in step (5) is 0.005g, 0.01g, 0.05g, 0.1g, 0.2g, 0.5g, to prepare different PEDOT / CdS / Fe 3 o 4 / HNT imprinted photocatalyst, investigating the effect of different addition amounts of poly-3,4-ethylenedioxythiophene on PEDOT / CdS / Fe 3 o 4 Influence of the photocatalytic activity of the / HNT imprinted photocatalyst, according to the step (7) in Example 1, the activity of photodegradation of danofloxacin mesylate solution was investigated. The photocatalytic effect is as Figure 7 As shown, it can be seen that the PEDOT / CdS / Fe prepared when the addition of poly-3,4-ethylenedioxythiophene is 0.1g 3 o 4 The / HNT imprinted photocatalyst has the best photodegradation effect on danofloxacin mesylate.

Embodiment 3

[0059] Carry out the same steps of the preparation process in Example 1, except that the microwave polymerization time in step (5) is 10min, 30min, 60min, 90min, 120min respectively to prepare different PEDOT / CdS / Fe 3 o 4 / HNT imprinted photocatalyst, investigating the effect of different microwave polymerization times on PEDOT / CdS / Fe 3 o 4 Influence of the photocatalytic activity of the / HNT imprinted photocatalyst, according to the step (7) in Example 1, the activity of photodegradation of danofloxacin mesylate solution was investigated. The photocatalytic effect is as Figure 8 As shown, it can be seen that the PEDOT / CdS / Fe prepared when the microwave polymerization time is 60min 3 o 4 The / HNT imprinted photocatalyst has the best photodegradation effect on danofloxacin mesylate.

[0060] figure 1 It is the XRD spectrum of different samples, as can be seen from the figure: after Fe 3 o 4 and CdS loading, CdS / Fe 3 o 4 / HNT, PEDOT / CdS / Fe 3 o 4 / HNT imprinted photo...

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Abstract

The invention provides a PEDOT / CdS / Fe3O4 / HNT imprinted photocatalyst with high photocatalytic activity and selectivity and a preparation method of the PEDOT / CdS / Fe3O4 / HNT imprinted photocatalyst. The preparation method comprises the following steps: step 1, preparation of modified halloysite nanotubes (Modified HNT); step 2, preparation of Fe3O4 / HNT; step 3, preparation of CdS / Fe3O4 / HNT; step 4, preparation of poly 3,4-ethylenedioxythiophene (PEDOT); and step 5, preparation of the PEDOT / CdS / Fe3O4 / HNT imprinted photocatalyst. In the prepared material, the photocatalytic material has selective recognition / photocatalytic degradation ability owing to introduction of a surface imprinting layer, and danofloxancin mesylate is removed selectively.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, in particular to a PEDOT / CdS / Fe with high photocatalytic activity and selectivity 3 o 4 / HNT imprinted photocatalyst and its preparation method and application. Background technique [0002] CdS, as an important type II–IV semiconductor, has a narrow bandgap (2.4eV), can be excited under visible light conditions to generate photogenerated electrons and photoinduced holes, and has good visible light response characteristics. widely concerned inorganic photocatalytic materials. However, ordinary CdS cannot selectively remove specific pollutants from many organic pollutants. For this reason, we introduced surface imprinting technology. However, the photocatalytic activity of ordinary surface imprinted CdS photocatalysts will be greatly reduced because the surface imprinted layer covers the active sites of CdS. Therefore, considering the organic-inorganic hybrid structur...

Claims

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Application Information

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IPC IPC(8): B01J31/28A62D3/17A62D101/22A62D101/26A62D101/28
CPCA62D3/17B01J31/28A62D2101/28A62D2101/26A62D2101/22B01J35/33B01J35/39Y02W10/37
Inventor 逯子扬朱志王友山宋旼珊赵晓旭高乃玲闫永胜霍鹏伟
Owner JIANGSU UNIV