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A preparation method of molecularly imprinted photocatalytic composite materials based on 3D graphene/bioi

A graphene composite and molecular imprinting technology is applied in the field of photocatalytic materials to achieve the effect of strong specific selective degradation ability and good application prospects

Active Publication Date: 2017-06-27
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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The method involved in the present invention has not been reported

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  • A preparation method of molecularly imprinted photocatalytic composite materials based on 3D graphene/bioi
  • A preparation method of molecularly imprinted photocatalytic composite materials based on 3D graphene/bioi
  • A preparation method of molecularly imprinted photocatalytic composite materials based on 3D graphene/bioi

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Experimental program
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Embodiment 1

[0019] (1) 1.51g Bi(NO 3 ) 3 ·5H 2 O, 0.4 g PVP-K30 and 5 ml HNO 3 (1.0 M) was added to 50 ml distilled water to form solution A; 0.5 g KI, 0.40 g PVP-K30 were added to 60 ml distilled water to form solution B. Solution B was then added dropwise to solution A under magnetic stirring. The resulting mixture was stirred in air for 2 h. Then, the formed yellow precipitate was collected by centrifugation, washed alternately with distilled water and pure ethanol, and dried at 80 °C for 3 h to obtain BiIO;

[0020] (3) Dissolve 0.05g of p-nitrophenol and 17.3 ul of pyrrole into 5.0 ml of methanol: distilled water (1:1, V / V) mixture, and stir the mixture for 30 min in the dark to prepare a pre-self-assembly solution ;

[0021] (4) Suspend 0.5g BiIO in 100 ml of HCl solution (pH=2), deoxidize and sonicate for 30 min to obtain a uniformly dispersed solution. Assembly solution was added to this solution. Then, 2 ml containing 0.27 g FeCl 3 solution (pH=2) was added dropwise to t...

Embodiment 2

[0025] (1) 1.51g Bi(NO 3 ) 3 ·5H 2 O, 0.4g PVP-K30 and 5ml HNO 3 (1.0 M) was added to 50 ml distilled water to form solution A; 0.5 g KI, 0.40 g PVP-K30 were added to 60 ml distilled water to form solution B. Solution B was then added dropwise to solution A under magnetic stirring. The resulting mixture was stirred in air for 2 h. Then, the formed yellow precipitate was collected by centrifugation, washed alternately with distilled water and pure ethanol, and dried at 80 °C for 3 h to obtain BiIO;

[0026] (3) Dissolve 0.05g of p-nitrophenol and 17.3 ul of pyrrole into 5.0 ml of methanol: distilled water (1:1, V / V) mixture, and stir the mixture for 30 min in the dark to prepare a pre-self-assembly solution ;

[0027] (4) Suspend 0.5g BiIO in 100 ml of HCl solution (pH=2), deoxidize and sonicate for 30 min to obtain a uniformly dispersed solution. Assembly solution was added to this solution. Then, 2 ml containing 0.27 g FeCl 3 solution (pH=2) was added dropwise to the...

Embodiment 3

[0031] (1) 1.51g Bi(NO 3 )3 ·5H 2 O, 0.4g PVP-K30 and 5ml HNO 3 (1.0 M) was added to 50 ml distilled water to form solution A; 0.5 g KI, 0.40 g PVP-K30 were added to 60 ml distilled water to form solution B. Solution B was then added dropwise to solution A under magnetic stirring. The resulting mixture was stirred in air for 2 h. Then, the formed yellow precipitate was collected by centrifugation, washed alternately with distilled water and pure ethanol, and dried at 80 °C for 3 h to obtain BiIO;

[0032] (3) Dissolve 0.05g of p-nitrophenol and 17.3ul of pyrrole into 5.0ml of methanol:distilled water (1:1, V / V) mixture, and stir the mixture for 30 min in the dark to prepare the pre-self-assembly solution ;

[0033] (4) Suspend 0.5 g BiIO in 100 ml of HCl solution (pH=2), deoxidize and sonicate for 30 min to obtain a uniformly dispersed solution. Assembly solution was added to this solution. Then, 2 ml containing 0.27 g FeCl 3 solution (pH=2) was added dropwise to the a...

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Abstract

The invention discloses a method for preparing a molecularly imprinted photocatalytic composite material based on 3D graphene / BiOI. The method comprises: first preparing BiOI nanospheres, and then modifying a polypyrrole molecular layer with substrate molecularly imprinted holes on the surface thereof , and then compound it with graphene to construct a 3D graphene / BiOI molecularly imprinted composite photocatalyst. The photocatalytic material obtained by the method has high-efficiency selective degradation performance on substrate molecules, and has broad application prospects in the field of treating organic pollutant wastewater.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, in particular to a method for preparing a molecularly imprinted photocatalytic composite material based on 3D graphene / BiOI. [0002] technical background [0003] With the intensification of global environmental pollution and ecological damage, many toxic and harmful organic pollutants have entered the environment. They exist for a long time, are widely distributed, are bioaccumulative, and pose a great hazard to human health. Photocatalytic technology is one of the effective means to control such pollutants. Photocatalysis can oxidize, decompose, and convert refractory organic pollutants into H 2 O.CO 2 And inorganic salts, etc., to partially or completely mineralize organic matter, so as to meet the requirements of harmless treatment of pollutants. [0004] However, there is also an important problem restricting the practical performance of photocatalytic technology. When treating a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06B01J35/10C02F1/30C02F1/58C02F101/38C02F101/34
Inventor 蒋华麟陈萍华厉梦琳张为波田磊白培培
Owner NANCHANG HANGKONG UNIVERSITY