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Preparation method of molecular imprinting photocatalytic composite material based on 3D graphene/BiOI

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

Active Publication Date: 2015-10-14
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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  • Preparation method of molecular imprinting photocatalytic composite material based on 3D graphene/BiOI
  • Preparation method of molecular imprinting photocatalytic composite material based on 3D graphene/BiOI
  • Preparation method of molecular imprinting photocatalytic composite material based on 3D graphene/BiOI

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Experimental program
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Embodiment 1

[0018] (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;

[0019] (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 ;

[0020] (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

[0024] (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;

[0025] (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 ;

[0026] (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...

Embodiment 3

[0030] (1) 1.51g Bi(NO 3 ) 3 ·5H2 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;

[0031] (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 ;

[0032] (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 a...

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Abstract

The invention discloses a preparation method of a molecular imprinting photocatalytic composite material based on 3D graphene / BiOI. The method is characterized by comprising the following steps: firstly, preparing a BiOI nano sphere; then modifying a polypyrrole molecular layer with a substrate molecular imprinting hole on the surface of the sphere; compounding the sphere with graphene to form a 3D graphene / BiOI molecular imprinting composite photocatalyst. The photocatalytic material obtained by the method has efficient selectivity and degrading performance, and has a wide application prospect in the field of managing 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. technical background [0002] 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. [0003] However, there is also an important problem restricting the practical performance of photocatalytic technology. When treating actual w...

Claims

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Application Information

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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
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