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Composite material photocatalyst for modifying by utilizing carbon dots, and preparation method and application of photocatalyst

A photocatalyst and composite material technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of destroying the balance of the ecosystem, non-point source pollution, antibiotic hazards, etc., and achieve green environmental protection and high efficiency The effect of pollution treatment technology and easy operation

Inactive Publication Date: 2018-03-02
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extensive use of antibiotics induces and accelerates the risk of the production of antibiotic resistance genes (Antibiotic resistance genes, ARGs) and the formation of drug-resistant strains, and more than 90% of the parts that cannot be completely absorbed by animals and humans undergo metabolic reactions such as hydroxylation and cleavage , and finally discharged directly into the environment in the form of the original drug, forming extensive and difficult-to-control non-point source pollution. The existence of long-term low-concentration antibiotics will affect the microbial community in the water body, and affect advanced organisms through the transmission of the food chain, destroying The ecosystem is in balance, so antibiotic residues and migration in the environment are potentially harmful

Method used

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  • Composite material photocatalyst for modifying by utilizing carbon dots, and preparation method and application of photocatalyst
  • Composite material photocatalyst for modifying by utilizing carbon dots, and preparation method and application of photocatalyst
  • Composite material photocatalyst for modifying by utilizing carbon dots, and preparation method and application of photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1)In 2 S 3 / Preparation of CNFs precursor:

[0027] Weigh 0.15g InCl 3 4H 2 Put O (indium chloride tetrahydrate) and 0.24g L-cysteine ​​into a glass beaker, add deionized water to dissolve it completely, stir magnetically, then add 0.15g carbon nanofibers, stir and sonicate to make it evenly mixed , then transfer the mixture to a 100mL hydrothermal reactor, and put it in an oven for calcination at 160°C for 12h, and the solid collected by filtration and washing is In 2 S 3 / CNFs precursor;

[0028] (2)CDs@In 2 S 3 Preparation of / CNFs composite photocatalyst:

[0029] Weigh 1.0g of citric acid and place it in a glass beaker, add 0.335mL of ethylenediamine and 10mL of deionized water, stir magnetically and heat with 800W microwave, the resulting solution is carbon dots; then add 0.5g of In 2 S 3 / CNFs precursor was added to 2g of the above-mentioned mixed solution, fully magnetically stirred and placed in a 50mL reaction kettle, heated at 120°C, cooled to roo...

Embodiment 2

[0032] (1)In 2S 3 / Preparation of CNFs precursor:

[0033] Weigh 0.30g InCl 3 4H 2 Put O (indium chloride tetrahydrate) and 0.48g L-cysteine ​​into a glass beaker, add deionized water to dissolve it completely, stir magnetically, then add 0.15g carbon nanofibers, stir and sonicate to make it evenly mixed , then transfer the mixture to a 100mL hydrothermal reactor, and put it in an oven for calcination at 160°C for 12h, and the solid collected by filtration and washing is In 2 S 3 / CNFs precursor;

[0034] (2)CDs@In 2 S 3 Preparation of / CNFs composite photocatalyst:

[0035] Weigh 1.0g of citric acid and place it in a glass beaker, add 0.335mL of ethylenediamine and 10mL of deionized water, stir magnetically and heat with 800W microwave, the resulting solution is carbon dots; then add 0.5g of In 2 S 3 / CNFs precursor was added to 2g of the above-mentioned mixed solution, fully magnetically stirred and placed in a 50mL reaction kettle, heated at 120°C, cooled to room...

Embodiment 3

[0038] (1)In 2 S 3 / Preparation of CNFs precursor:

[0039] Weigh 0.45g InCl 3 4H 2 Put O (indium chloride tetrahydrate) and 0.72g L-cysteine ​​into a glass beaker, add deionized water to dissolve it completely, stir magnetically, then add 0.15g carbon nanofibers, stir and sonicate to make it evenly mixed , then transfer the mixture to a 100mL hydrothermal reactor, and put it in an oven for calcination at 160°C for 12h, and the solid collected by filtration and washing is In 2 S 3 / CNFs precursor;

[0040] (2)CDs@In 2 S 3 Preparation of / CNFs composite photocatalyst:

[0041] Weigh 1.0g of citric acid and place it in a glass beaker, add 0.335mL of ethylenediamine and 10mL of deionized water, stir magnetically and heat with 800W microwave, the resulting solution is carbon dots; then add 0.5g of In 2 S 3 / CNFs precursor was added to 2g of the above-mentioned mixed solution, fully magnetically stirred and placed in a 50mL reaction kettle, heated at 120°C, cooled to roo...

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Abstract

The invention relates to a composite material photocatalyst for modifying In<2>S<3> / CNFs by utilizing carbon dots (CDs), and a preparation method and application of the photocatalyst, and belongs to the technical field of environment protection material preparation. Citric acid is weighed and placed in a glass beaker; ethylenediamine and deionized water are added; magnetic stirring and microwave heating are carried out, so that an obtained mixed solution is a carbon point; then, an In<2>S<3> / CNFs precursor is added into the mixed solution; full magnetic stirring is carried out; the stirred mixed solution is placed into a reaction kettle; heating under the condition of 160 DEG C is carried out; and the heated mixed solution is naturally cooled to the room temperature, and then is taken outand ground, and the obtained solid powder is the CDs@In<2>S<3> / CNFs composite photocatalyst.

Description

technical field [0001] The present invention relates to a kind of using carbon dots (CDs) to modify In 2 S 3 / CNFs composite material photocatalyst and its preparation method and application, belonging to the technical field of environmental protection material preparation. Background technique [0002] Antibiotics are a class of natural, semi-synthetic or synthetic compounds with anti-microbial activity. As a class of pharmaceuticals and personal care products (PPCPs), they have antibacterial activity and interfere with other cell development functions. Compounds that can selectively inhibit or affect biological functions at low concentrations. Since the antagonism of penicillin was discovered and successfully transferred from the laboratory to large-scale production, antibiotics have saved countless lives and are widely used in the treatment of infections. With the rapid progress of medical technology and biological science, the types of antibiotics have been rapidly ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04C02F1/30C02F1/72C02F103/34
CPCC02F1/30C02F1/725B01J27/04C02F2103/343C02F2305/10B01J35/39
Inventor 李金择霍鹏伟唐丽丽吴东遥关静茹刘重阳王会琴马长畅闫永胜
Owner JIANGSU UNIV
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