Photocatalyst active carbon floating sphere and preparation method thereof

An activated carbon and photocatalyst technology, applied in chemical instruments and methods, other chemical processes, light water/sewage treatment, etc., can solve the problems of lack of adsorption capacity, small specific surface area, etc., to promote application development, low preparation cost, preparation simple method effect

Inactive Publication Date: 2016-09-07
张爱民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But because the surface of the floating beads is relatively smooth, the specific surface area is small, and basically has no adsorption capacity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of photocatalyst active carbon floating ball, raw material comprises active carbon particle 120g, particle diameter is 5-10nm silver-doped titanium dioxide 10g, coupling agent 5g, and its preparation method is as follows:

[0032] (1) Dry the activated carbon particles in a microwave vacuum dryer at 40°C until the water content is less than 0.3%;

[0033] (2) Atomized and sprayed the activated carbon particles with a coupling agent consisting 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 particles 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 silver-doped nano-titanium dioxide into a suspension, place the activated carbon floating beads obtained in step (3) in the suspension, soak for 5 hours, and then filter; the mass concentration of...

Embodiment 2

[0038] A kind of photocatalyst activated carbon floating ball, raw material comprises activated carbon particle 80g, particle diameter is 1g of silver-doped titanium dioxide of 5-10nm, coupling agent 20g, and its preparation method is as follows:

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

[0040] (2) Atomized and sprayed the activated carbon particles 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 particles 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 silver-doped nano-titanium dioxide into a suspension, place the activated carbon particles obtained in step (3) in the suspension, soak for 0.5h, and then filter; the mass conce...

Embodiment 3

[0045] A kind of photocatalyst activated carbon floating ball, raw material comprises activated carbon particle 100g, particle diameter is 6.4g of silver-doped titanium dioxide of 5-10nm, coupling agent 12g, and its preparation method is as follows:

[0046] (1) Dry the activated carbon particles in a microwave vacuum dryer at 60°C until the water content is less than 0.3%;

[0047] (2) Atomized and sprayed the activated carbon particles with a coupling agent consisting 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 particles 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 silver-doped nano-titanium dioxide into a suspension, place the activated carbon particles obtained in step (3) in the suspension, soak for 3 hours, and then filter; the mass concent...

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Abstract

The invention relates to the field of active carbon, and concretely relates to a photocatalyst active carbon floating sphere and a preparation method thereof. The method comprises the following steps: spraying active carbon particles with an atomized coupling agent in vacuum microwave environment, immersing the sprayed active carbon particles in a silver-doped nanometer titanium dioxide solution to make the active carbon particles be grafted with nanometer titanium dioxide, and drying the grafted active carbon particles to obtain the photocatalyst active carbon floating sphere. The active carbon floating sphere is grafted with the silver-doped nanometer titanium dioxide, so the active carbon floating sphere has an organic matter photocatalysis function in visible lights, and also has excellent adsorption ability. The preparation method has the advantages of simplicity and low preparation cost, and the photocatalyst active carbon floating sphere prepared in the invention has excellent performances, and is of great significance to promote the application and development in the sewage field.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a photocatalyst activated carbon floating bead and a preparation method thereof. Background technique [0002] Granular activated carbon cannot continue to work after adsorption saturation in water purification, air purification, waste gas, wastewater treatment and other applications. The general treatment method is to regenerate or replace the raw material. This will cause inconvenience in use and a substantial increase in cost of use. If granular activated carbon has the function of adsorbing organic matter and decomposing the adsorbed organic matter under visible light irradiation, then the adsorption function of granular activated carbon will never be saturated, and the adsorption of organic waste and organic waste gas can continue. [0003] Chinese Patent Publication No. CN105597805A discloses iron and nitrogen doped titanium dioxide loaded carbon fiber composite photocatal...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/28B01J20/20B01J20/28B01J20/30B01J31/38C02F101/30
CPCB01J20/20C02F1/281C02F1/283C02F1/30B01J20/28011B01J20/28016B01J31/38C02F2101/30C02F2101/308C02F2303/02C02F2305/10B01J35/39
Inventor 张爱民
Owner 张爱民
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