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A kind of photocatalytic activated carbon fiber and preparation method thereof

A technology of activated carbon fiber and photocatalysis, applied in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc. In order to avoid problems such as unstable branches, the effects of promoting application development, long service life and reliable grafting can be achieved.

Active Publication Date: 2019-01-18
江苏盛世基业环保科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, titanium dioxide is synthesized by chemical method, and then grafted on the surface of activated carbon fiber, so that the particle size distribution of the obtained titanium dioxide is uneven, and the grafting is not strong, thereby reducing the photocatalytic activity of the obtained photocatalytic activated carbon fiber. Activity and service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of photocatalytic activated carbon fiber, raw material comprises activated carbon fiber 80g, particle diameter is 10g of pure anatase type nano-titanium dioxide of 5-10nm, coupling agent 5g, and its preparation method is as follows:

[0032] (1) Dry the activated carbon fiber in a microwave vacuum dryer at 60°C until the water content is less than 0.3%;

[0033] (2) The activated carbon fiber is treated by atomizing and spraying a coupling agent, which is composed of 15 parts by weight of a silane coupling agent, 8 parts by weight of a modified organosilicon compound, and 70 parts by weight of methanol;

[0034] (3) Dry the activated carbon fiber obtained in step (2) in a microwave vacuum dryer at 80°C until the thermal weight loss within 5 minutes is less than 0.5%;

[0035] (4) Prepare pure anatase nano-titanium dioxide into a suspension, place the activated carbon fiber obtained in step (3) in the suspension, soak for 0.5-5h, and then filter; the pure anatase ...

Embodiment 2

[0038] A kind of photocatalytic activated carbon fiber, raw material comprises activated carbon fiber 120g, particle diameter is 10g of pure anatase type nano-titanium dioxide of 5-10nm, coupling agent 20g, and its preparation method is as follows:

[0039] (1) Dry the activated carbon fiber in a microwave vacuum dryer at 100°C until the water content is less than 0.3%;

[0040] (2) Atomized and sprayed treatment of activated carbon fibers with a coupling agent consisting of 20 parts by weight of a silane coupling agent, 10 parts by weight of a modified organosilicon compound, and 77 parts by weight of ethyl acetate;

[0041] (3) Dry the activated carbon fiber obtained in step (2) in a microwave vacuum dryer at 200°C until the thermal weight loss within 5 minutes is less than 0.5%;

[0042] (4) Prepare pure anatase nano-titanium dioxide into a suspension, place the activated carbon fiber obtained in step (3) in the suspension, soak for 0.5-5h, and then filter; the pure anatase...

Embodiment 3

[0045] A kind of photocatalytic activated carbon fiber, raw material comprises activated carbon fiber 100g, particle diameter is 4.6g of pure anatase type nano-titanium dioxide of 5-10nm, coupling agent 15g, and its preparation method is as follows:

[0046] (1) Dry the activated carbon fiber in a microwave vacuum dryer at 80°C until the water content is less than 0.3%;

[0047] (2) The activated carbon fiber is treated by atomizing and spraying a coupling agent, which is composed of 18 parts by weight of a silane coupling agent, 9 parts by weight of a modified organosilicon compound, and 73 parts by weight of ethanol;

[0048] (3) Dry the activated carbon fiber obtained in step (2) in a microwave vacuum dryer at 140°C until the thermal weight loss within 5 minutes is less than 0.5%;

[0049](4) Prepare pure anatase nano-titanium dioxide into a suspension, place the activated carbon fiber obtained in step (3) in the suspension, soak for 0.5-5h, and then filter; the pure anatas...

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Abstract

The invention relates to the field of activated carbon, and in particular to a photocatalytic activated carbon fiber and a preparation method thereof. In the present invention, the activated carbon fiber is sprayed with an atomized coupling agent in a vacuum microwave environment, and then soaked in a nano-titanium dioxide solution to graft the activated carbon fiber with nano-titanium dioxide. After drying, the photocatalytic activated carbon fiber is obtained. In the present invention, nanometer titanium dioxide with high visible light catalytic activity is grafted onto the activated carbon fiber, so that the activated carbon fiber not only has adsorption capacity, but also has a visible light catalytic function. The preparation method of the present invention is simple, the preparation cost is low, the photocatalytically active carbon fiber produced has excellent performance, and is of great significance in promoting the application development of decomposing organic matter.

Description

technical field [0001] The invention relates to the field of activated carbon, in particular to a photocatalytic activated carbon fiber and a preparation method thereof. Background technique [0002] Activated carbon fiber (ACF) is the third-generation adsorption material following the widely used granular activated carbon and powdered activated carbon. It is made of fiber and has large specific surface area, moderate pore size, uniform distribution, fast adsorption speed, and less impurities. Advantages: The fiber diameter of activated carbon fiber is 5~20μm, and the average specific surface area is 1000~3000m 2 / g, the average pore size is 1.0~4.0nm, and the micropores are evenly distributed on the surface of the fiber. Compared with activated carbon, activated carbon fiber has small and uniform pore size, simple structure, fast adsorption rate for adsorbing small molecular substances, high adsorption speed, and easy desorption. The contact area with the adsorbed substan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/18B01J21/06B01J35/06B01J20/20B01J20/28
CPCB01J20/20B01J20/28023B01J21/063B01J21/18B01J35/58B01J35/39
Inventor 张爱民
Owner 江苏盛世基业环保科技有限公司
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