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Preparation method of TiO2/biomass activated carbon composite material

A composite material and activated carbon technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as limited adsorption capacity and inability to meet long-term needs, and achieve good adsorption and degradation performance and easy operation Effect

Inactive Publication Date: 2018-11-13
陈正新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country is a big agricultural country, which feeds 22% of the population with 7% of the world's land, and also produces a large amount of biomass waste, which can be prepared into activated carbon with a special microcrystalline structure and developed fine pores, which can effectively absorb harmful substances. substances, but their adsorption capacity is limited and cannot meet long-term needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of TiO 2 The preparation method of / biomass activated carbon composite material comprises the steps: 35 parts of pomelo peels are put into 95 parts of ZnCl 2 Soak in medium for 48 hours, put it into a muffle furnace and calcinate at 480°C for 5 hours, and then wash with water, pickle, and water to obtain biomass activated carbon; mix 30 parts of distilled water and 35 parts of absolute ethanol evenly, and adjust with 1mol / L part of HCl solution pH to 3, to obtain liquid A; put 75 parts of absolute ethanol into a conical flask, add 20 parts of biomass activated carbon, add 25 parts of glacial acetic acid, and slowly add 35 parts of tetra-n-butyl titanate on a magnetic stirrer Ester, stir evenly to obtain liquid B; slowly add liquid A to liquid B under magnetic stirring, continue magnetic stirring for 3.5 hours, obtain a gel after standing for 24 hours, continue to place and age for 28 hours, and dry at 95°C for 48 hours to obtain a dry sample. Grinding, N 2 In th...

Embodiment 2

[0021] A kind of TiO 2 / The preparation method of biomass activated carbon composite material, comprises the steps: put 30 parts of pomelo peels into 90 parts of ZnCl 2 Soak in medium for 47 hours, put it into a muffle furnace and calcinate at 470°C for 4 hours, and then wash with water, pickle, and water to obtain biomass activated carbon; mix 25 parts of distilled water and 30 parts of absolute ethanol evenly, and adjust with 1mol / L part of HCl solution pH to 2.5 to obtain liquid A; put 70 parts of absolute ethanol into a conical flask, add 15 parts of biomass activated carbon, add 20 parts of glacial acetic acid, and slowly add 30 parts of tetra-n-butyl titanate on a magnetic stirrer Ester, stir evenly to obtain liquid B; slowly add liquid A to liquid B under magnetic stirring, continue magnetic stirring for 3 hours, obtain a gel after standing for 23 hours, continue to place and age for 27 hours, dry at 90°C for 47 hours, obtain a dry sample, grind , N 2 In the atmospher...

Embodiment 3

[0023] A kind of TiO 2 The preparation method of / biomass activated carbon composite material comprises the steps: 40 parts of pomelo peels are put into 100 parts of ZnCl 2 Soak in medium for 49 hours, put it into a muffle furnace and calcinate at 490°C for 6 hours, and then wash with water, pickle, and water to obtain biomass activated carbon; mix 35 parts of distilled water and 40 parts of absolute ethanol evenly, and adjust with 1mol / L part of HCl solution pH to 3.5 to obtain liquid A; put 80 parts of absolute ethanol into a conical flask, add 25 parts of biomass activated carbon, add 30 parts of glacial acetic acid, and slowly add 40 parts of tetra-n-butyl titanate on a magnetic stirrer Ester, stir evenly to obtain liquid B; slowly add liquid A to liquid B under magnetic stirring, continue magnetic stirring for 4 hours, obtain a gel after standing for 25 hours, continue to place and age for 29 hours, dry at 100°C for 49 hours, obtain a dry sample, grind , N 2 In the atmos...

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Abstract

The invention discloses a preparation method of a TiO2 / biomass activated carbon composite material, wherein the preparation method comprises the following steps: putting shaddock peel in ZnCl2, soaking, calcining, then washing with water, pickling and washing with water to obtain biomass activated carbon; mixing distilled water and anhydrous ethanol evenly, and adjusting the pH to 2.5-3.5, to obtain a solution A; adding anhydrous ethanol into a conical flask, adding activated carbon and glacial acetic acid, then adding tetra-n-butyl titanate on a magnetic stirrer, and stirring evenly to obtaina solution B; and adding the solution A into the solution B, stirring for 3-4 h, allowing to stand, to obtain a gel, placing and aging, drying, grinding, then heating up to 185-195 DEG C in a N2 atmosphere, keeping constant temperature for 1.5-2.5 h, then heating up to 450-470 DEG C, carrying out heat preservation calcination for 3-4 h, cooling, grinding, and thus obtaining the product. The composite material with dual properties of adsorption and photocatalytic degradation is prepared by the method. The composite material has good adsorption and degradation properties on neutral red, methylene blue dyes and formaldehyde.

Description

technical field [0001] The present invention relates to a kind of TiO 2 The preparation method of / biomass activated carbon composite material. Background technique [0002] my country is a big agricultural country, which feeds 22% of the population with 7% of the world's land, and also produces a large amount of biomass waste, which can be prepared into activated carbon with a special microcrystalline structure and developed fine pores, which can effectively absorb harmful substances. substances, but their adsorption capacity is limited and cannot meet long-term needs. Titanium dioxide (TiO 2 ) is a soft, odorless, and tasteless white substance that can be used in many industries such as paint, ink, plastic, rubber, paper, and chemical fiber. In addition, TiO 2 It is also a good photocatalytic degradation material, which can effectively degrade harmful substances in the environment. Many researchers are committed to developing new materials that can effectively reduce po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J21/06
CPCB01J20/20B01J21/063
Inventor 陈正新
Owner 陈正新
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