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A kind of modified graphene oxide ultraviolet photocatalytic film and preparation method thereof

A technology of catalytic film and ultraviolet light, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of small light contact area and poor photocatalytic performance, and achieve simple steps and rigorous operation , good effect of ultraviolet photocatalytic performance

Active Publication Date: 2022-07-22
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems of poor photocatalytic performance and small light contact area of ​​graphene oxide materials in the prior art, the present invention provides a modified graphene oxide ultraviolet photocatalytic film and its preparation method

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  • A kind of modified graphene oxide ultraviolet photocatalytic film and preparation method thereof
  • A kind of modified graphene oxide ultraviolet photocatalytic film and preparation method thereof
  • A kind of modified graphene oxide ultraviolet photocatalytic film and preparation method thereof

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Embodiment 1

[0040] like figure 1 As shown, the preparation method of a modified graphene oxide ultraviolet photocatalytic film of the present invention, the specific steps are:

[0041] S10, using titanate hydrolysis to obtain titanium dioxide dispersion, the specific process is:

[0042] (1) pour 6ml tetrabutyl titanate into 20ml dehydrated alcohol to obtain tetrabutyl titanate dehydrated alcohol solution;

[0043] (2) Add a 0.08M nitric acid solution with a volume of V1 to the tetrabutyl titanate anhydrous ethanol solution, stir under non-sealed conditions at 20-25°C, the stirring speed is 250r / min, and the stirring time is After stirring for 10 min, a reaction solution was obtained;

[0044] (3) the reaction solution is heated to 65~75 ℃ (70 ℃ in this embodiment), stir to carry out hydrolysis reaction, the speed of stirring is 200r / min, and the stirring time is 45min, and then adding volume to the reaction solution is V2 The 0.08M nitric acid solution was stirred under airtight cond...

Embodiment 2

[0064] The content of this embodiment is basically the same as that of the embodiment, the difference is: the preparation method of a modified graphene oxide ultraviolet photocatalytic film of this embodiment, the specific steps are:

[0065] S10, using titanate hydrolysis to obtain titanium dioxide dispersion, the specific process is:

[0066] (1) pour 6ml tetrabutyl titanate into 20ml dehydrated alcohol to obtain tetrabutyl titanate dehydrated alcohol solution;

[0067] (2) Add 0.08M nitric acid solution with volume V1=30ml to the tetrabutyl titanate anhydrous ethanol solution, stir at 20-25°C under non-sealed conditions, the stirring speed is 250r / min, and the stirring time For 10min, the reaction solution was obtained after stirring;

[0068] (3) the reaction solution is heated to 70 ℃, and the hydrolysis reaction is carried out with stirring, and the stirring speed is 180r / min, and the stirring time is 45min, and then adding the 0.08M nitric acid solution whose volume is...

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Abstract

The invention discloses a modified graphene oxide ultraviolet photocatalytic film and a preparation method thereof, and belongs to the field of film material preparation. The present invention adopts a simple hydrolysis method to prepare a titanium dioxide dispersion liquid, adopts a hydrothermal method to prepare a nitrogen-doped graphene oxide material, and then utilizes the photosensitivity of titanium dioxide and the separation ability of electron-hole pairs improved by nitrogen-doped graphene oxide, to achieve Nitrogen-doped graphene oxide, a membrane raw material and a pore-forming agent are added to the titanium dioxide dispersion, and a titanium dioxide-modified nitrogen-doped graphene oxide ultraviolet photocatalytic membrane with stable membrane structure and good ultraviolet photocatalytic performance is prepared by one-step method. The method of the invention has strict operation and simple steps.

Description

technical field [0001] The invention belongs to the field of film material preparation, and more particularly relates to a modified graphene oxide ultraviolet photocatalytic film and a preparation method thereof. Background technique [0002] With the continuous development of industrialization and urbanization, the large-scale discharge of industrial wastewater and municipal sewage, coupled with the residues of fertilizers, pesticides and pesticides widely used in the agricultural production process, have become increasingly serious pollution to water quality. The traditional technical means is usually to use activated carbon adsorption, but the regeneration process after its adsorption saturation (usually thermal desorption method) is quite expensive, and there is also the problem of secondary pollution caused by desorption. The use of photocatalytic technology to treat water pollution has the following advantages: under normal temperature and pressure conditions, organic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J21/18B01J35/02B01J35/00
CPCB01J27/24B01J21/18B01J35/39B01J35/00B01J35/30
Inventor 张志伟杨飞张毅敏徐斌吕玉娟张涛
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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