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A kind of self-supporting agi composite photocatalyst material and its preparation method and application

A composite light and catalyst technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of no self-supporting AgI composite photocatalyst application, etc., to achieve Easy to separate and reuse the effect

Active Publication Date: 2019-06-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a self-supporting AgI composite photocatalyst material and its preparation method and application, which solves the problem that there is no current application of self-supporting AgI composite photocatalysts

Method used

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  • A kind of self-supporting agi composite photocatalyst material and its preparation method and application
  • A kind of self-supporting agi composite photocatalyst material and its preparation method and application
  • A kind of self-supporting agi composite photocatalyst material and its preparation method and application

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preparation example Construction

[0037] The preparation method of above-mentioned self-supporting AgI composite photocatalyst comprises the following steps:

[0038] (1) Prepare PAN nanofiber membrane by electrospinning;

[0039] (2) Prepare PAN / Ag composite nanofiber membrane by electroless plating process;

[0040] (3) The PAN / AgI composite nanofibrous membrane is prepared by the combination reaction of elemental silver and elemental iodine.

Embodiment 1

[0042] Preparation of self-supporting AgI composite photocatalyst

[0043] (1) Preparation of PAN / Ag composite nanofibers: prepare PAN / DMF solution with a mass fraction of 5%-10%, and prepare PAN nanofiber membranes by electrospinning; equip 0.1mol / L NaBH 4 solution, soak the fiber membrane; equipped with solution A: 0.6gAgNO 3 , 30ml H 2 O, 1.5ml NH 3 h 2 O; also equipped with B solution: 3g sodium potassium tartrate, 30ml H 2 O: Immerse the PAN nanofiber membrane in the A solution, add the B solution into the A solution, stir and react for 1-3h, take out the PAN / Ag nanofiber membrane, wash it with deionized water and ethanol for 3 times, and dry it;

[0044] (2) Equip an elemental iodine / ethanol solution with a concentration of 0.005mol / L, immerse the PAN / Ag composite nanofiber membrane in 25ml, 50ml, 75ml, and 100ml of the solution respectively, stir for 12h, take out the fiber membrane and rinse with deionized water Wash with ethanol for 3 times and dry to obtain a se...

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Abstract

The invention provides an AgI composite photocatalyst material, the material is a self-supporting flexible fiber membrane, and the morphology is that AgI nanometer particles are loaded on the surface of polyacrylonitrile nanofibers. The invention also provides the preparation method and application of the material. The polyacrylonitrile nanofiber membrane prepared by electrospinning is used as a support, and an electroless plating process is used to deposit a layer of conductive silver shell on the surface of the fiber, and the direct reaction of silver and iodine is used. , the surface silver is converted to AgI, and the composite fiber membrane of polyacrylonitrile nanofibers loaded with AgI or AgI / Ag nanoparticles is prepared by adjusting the amount of iodine. This type of material exhibits excellent photocatalytic performance and is suitable for the field of photochemistry.

Description

technical field [0001] The invention belongs to the technical field of synthesis and photochemistry of new energy nanomaterials, and in particular relates to a self-supporting AgI composite photocatalyst material and its preparation method and application. Background technique [0002] As more and more countries enter the stage of industrialization, the 21st century will be a century of explosive growth in energy consumption and environmental pollution. Fossil energy (oil, natural gas, coal) is gradually becoming exhausted, and the available amount is seriously reduced. It is urgent to develop a new type of energy that can be used. At the same time, the discharge of a large amount of textile, printing and dyeing industrial sewage has aggravated water pollution, and most dyes contain aromatic groups such as benzene, naphthalene, anthracene, and quinone, which are highly polluting; in addition, halides and nitro groups in dye wastewater Organic substances such as organic comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/26B01J35/06C02F1/30
CPCY02W10/37
Inventor 王兆杰平梦漠刘俊学刘明安长华王淑涛周炎
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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