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Preparation method of lamellar three-phase composite photocatalytic material

A composite photocatalytic and lamellar technology, applied in the field of photocatalytic materials, can solve the problems of low visible light capture ability and electron transmission efficiency, poor degradation performance of organic pollutants, etc., and achieve high visible light capture ability, low equipment requirements, and reaction mild effects

Active Publication Date: 2021-01-05
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently obtained composite photocatalytic materials have disadvantages such as low visible light capture ability, low electron transport efficiency, and poor degradation performance for organic pollutants.

Method used

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  • Preparation method of lamellar three-phase composite photocatalytic material
  • Preparation method of lamellar three-phase composite photocatalytic material
  • Preparation method of lamellar three-phase composite photocatalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Take 5mL of 2.5g / L graphene dispersion prepared by ultrasonic stripping and a certain volume of 5mM K 2 PtCl 6 The solution was mixed well, then added dropwise with K 2 PtCl 6 Solution equal volume of 200mM NaBH 4 Graphene / nano-platinum (GO / PtNPs) composites were prepared after solution reaction, the K 2 PtCl 6 and NaBH 4 The volume of the solution is 25 mL; add 1 g of sodium lignosulfonate to 100 mL of distilled water, and stir in an ice-water bath for 10 min. After dispersing the GO / PtNPs composite material prepared above in this solution, add 0.6 mL of pyrrole and 50 mL of 0.2892M FeCl 3 solution. After reacting for 7 hours while stirring in an ice-water bath, filter and wash, place in an oven and dry at 60°C for 12 hours to obtain a three-phase graphene / nano-platinum / polypyrrole (GO / PtNPs / PPy) composite photocatalytic material .

[0046] The GO / PtNPs / PPy photocatalytic material prepared by the above method is marked as d.

Embodiment 2

[0048] Take 5mL of 2.5g / L graphene dispersion prepared by ultrasonic stripping and a certain volume of 5mM K 2 PtCl 6 The solution was mixed well, then added dropwise with K 2 PtCl 6 Solution equal volume of 200mM NaBH 4 Graphene / nano-platinum (GO / PtNPs) composites were prepared after solution reaction, the K 2 PtCl 6 and NaBH 4 The volume of the solution is 25 mL; add 1 g of sodium lignosulfonate to 100 mL of distilled water, and stir in an ice-water bath for 10 min. After dispersing the GO / PtNPs composite material prepared above in this solution, add 1.0 mL of pyrrole and 50 mL of 0.2892M FeCl 3 solution. After reacting for 7 hours while stirring in an ice-water bath, filter and wash, place in an oven and dry at 60°C for 12 hours to obtain a three-phase graphene / nano-platinum / polypyrrole (GO / PtNPs / PPy) composite photocatalytic material .

[0049] The GO / PtNPs / PPy photocatalytic material prepared by the above method is marked as e.

Embodiment 3

[0051] Take 5mL of 2.5g / L graphene dispersion prepared by ultrasonic stripping and a certain volume of 5mM K 2 PtCl 6 The solution was mixed well, then added dropwise with K 2 PtCl 6 Solution equal volume of 200mM NaBH 4 Graphene / nano-platinum (GO / PtNPs) composites were prepared after solution reaction, the K 2 PtCl 6 and NaBH 4 The volume of the solution is 35 mL; add 1 g of sodium lignosulfonate to 100 mL of distilled water, and stir in an ice-water bath for 10 min. After dispersing the GO / PtNPs composite material prepared above in this solution, add 1.0 mL of pyrrole and 50 mL of 0.2892M FeCl 3 solution. After reacting for 7 hours while stirring in an ice-water bath, filter and wash, place in an oven and dry at 60°C for 12 hours to obtain a three-phase graphene / nano-platinum / polypyrrole (GO / PtNPs / PPy) composite photocatalytic material .

[0052] The GO / PtNPs / PPy photocatalytic material prepared by the above method is marked as f.

[0053] figure 1 It is the ultra...

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Abstract

The invention discloses a preparation method of a lamellar three-phase composite photocatalytic material. The preparation method is specifically implemented according to the following steps: step 1, uniformly mixing a graphene dispersion liquid and a K2PtCl6 solution; 2, dropwise adding a NaBH4 solution with the same volume as the K2PtCl6 solution, and carrying out a reaction to prepare a graphene / nano platinum composite material; 3, adding sodium lignin sulfonate into distilled water, and stirring the liquid in an ice-water bath for 10 minutes to obtain a sodium lignin sulfonate solution, then dispersing the graphene / nano platinum composite material prepared in the step 2 into a sodium lignin sulfonate solution, and respectively adding pyrrole and a FeCl3 solution to prepare the graphene / nano platinum / polypyrrole three-phase composite photocatalytic material. The layered three-phase composite photocatalytic material prepared by the method has the advantages of high visible light capture capability, good electron and hole separation and transmission effect, and high photocatalytic degradation performance under the condition of light irradiation.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials, and in particular relates to a preparation method of a lamellar three-phase composite photocatalytic material. Background technique [0002] In the past few centuries, environmental pollution and its control is one of the major challenges faced by human beings, and a large amount of wastewater containing organic dyes is discharged in the textile industry every year. These macromolecules are potentially carcinogenic, toxic, and stubbornly non-biodegradable. Due to their harmful ecological effects and great risks to human health, efficient removal methods for organic pollutants are major scientific issues that need to be solved urgently. Due to its unique two-dimensional honeycomb structure, chemical stability, and high mobility for carriers, graphene (GO)-based composite materials have increasingly become a research hotspot in the field of visible light photocatalysis. However, the van der...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J31/06B01J21/18B01J37/34B01J37/16C02F1/30C02F101/30C02F101/36C02F101/38
CPCB01J31/069B01J23/42B01J21/18B01J37/343B01J37/16C02F2101/30C02F2101/36C02F2101/38C02F2101/40C02F2305/10C02F2101/308B01J35/39B01J35/33Y02W10/37
Inventor 何仰清杨谦马蓓姚秉华
Owner XIAN UNIV OF TECH