Preparation method and application of a kind of square phase bismuth oxide activated carbon photocatalyst

A technology of photocatalyst and activated carbon, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., which can solve the problems of failure to absorb visible light and achieve low cost and easy operation Simple, to avoid the effect of secondary pollution
CN110152649BActive Publication Date: 2021-09-14KUNMING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Publication Date
2021-09-14

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Abstract

The invention relates to a preparation method and application of a square-phase bismuth oxide activated carbon photocatalyst, belonging to the technical field of photocatalysts. In the present invention, the deactivated activated carbon is placed in a microwave power of 800-1000 W and a temperature of 600-900°C for a constant temperature reaction for 10-30 minutes to obtain the regenerated activated carbon; the regenerated activated carbon is mixed with lysine solution and bismuth nitrate solution evenly and Impregnated under stirring conditions for 120-240 min, and then placed in microwave roasting for 10-30 min at a microwave power of 500-1000W and a temperature of 300-900°C to obtain the square phase Bi 2 o 3 ‑AC photocatalyst. The invention uses the deactivated activated carbon as the carrier of the metal oxide, prepares the bismuth oxide activated carbon photocatalyst of the square phase, improves the adsorption capacity and can degrade the dye in the dye wastewater under the irradiation of visible / ultraviolet light.
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Description

technical field

[0001] The invention relates to a preparation method and application of a square-phase bismuth oxide activated carbon photocatalyst, belonging to the technical field of photocatalysts. Background technique

[0002] Activated carbon has excellent properties such as developed pore structure, high specific surface area, and recyclability. It is a good adsorbent and can be widely used to treat industrial wastewater. After a period of use, a large amount of deactivated activated carbon will be produced due to the deactivation of activated carbon. If deactivated activated carbon cannot be used efficiently, it will have a serious impact on the environment and human health, so the treatment of deactivated activated carbon has become an inevitable trend.

[0003] Bismuth oxide (Bi 2 o 3 ) is a P-type semiconductor material, and the crystal forms included are monoclinic α-Bi 2 o 3 , tetragonal β-Bi 2 o 3 , cubic γ-Bi 2 o 3 and δ-Bi 2 o 3 . Bi 2 o 3 It is c...

Claims

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