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a g-c 3 no 4 /zno/ Functional carbon adsorption material of activated carbon and preparation method thereof

A g-c3n4, functional technology, applied in the field of preparation of functional carbon adsorption materials, can solve the problems of low quantum efficiency, large band gap, high exciton binding energy, etc., and achieve high pollutant removal ability and long service life , the effect of great application value

Inactive Publication Date: 2016-09-07
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, g-C 3 N 4 There are still some problems with polymers as photocatalysts, such as small specific surface area, high exciton binding energy for generating photogenerated carriers, low quantum efficiency and large forbidden band width ( lambda <460 nm) and cannot effectively use sunlight, etc.

Method used

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  • a g-c <sub>3</sub> no <sub>4</sub> /zno/ Functional carbon adsorption material of activated carbon and preparation method thereof
  • a g-c <sub>3</sub> no <sub>4</sub> /zno/ Functional carbon adsorption material of activated carbon and preparation method thereof
  • a g-c <sub>3</sub> no <sub>4</sub> /zno/ Functional carbon adsorption material of activated carbon and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] a g-C 3 N 4 The preparation method of the functional carbon adsorption material of / ZnO / activated carbon comprises the following steps:

[0021] (1) Crushing, screening and drying wood or bamboo raw materials;

[0022] (2) Take 10g of the dried raw material and heat it up to 400°C at a rate of 5°C / min under the protection of high-purity nitrogen, keep it warm for 2h, and cool it down to room temperature naturally;

[0023] (3) Add 1g of zinc acetate to 50 mL of distilled water under stirring conditions, and react for 20 minutes, then add 1.5g of melamine, continue to stir and react for 30 minutes, and fully mix with the material prepared in step (2), dip for 24 hours, 80 °C down drying;

[0024] (4) The material prepared in step (3) was raised from room temperature to 500°C at a rate of 10°C / min under the protection of high-purity nitrogen, kept at a constant temperature for 2 hours, and then raised to 530°C at a rate of 0.2°C / min. And keep the temperature for 5h, a...

Embodiment 2

[0026] a g-C 3 N 4 The preparation method of the functional carbon adsorption material of / ZnO / activated carbon comprises the following steps:

[0027] (1) Crushing, screening and drying wood or bamboo raw materials;

[0028] (2) Take 10g of the dried raw material and heat it up to 420°C at a rate of 5°C / min under the protection of high-purity nitrogen, keep it warm for 1h, and cool it down to room temperature naturally;

[0029] (3) Add 3g of zinc acetate to 50 mL of distilled water under stirring conditions, and react for 20 minutes, then add 5g of melamine, continue stirring and reacting for 30 minutes. drying;

[0030] (4) The material prepared in step (3) was raised from room temperature to 500°C at a rate of 10°C / min under the protection of high-purity nitrogen, kept at a constant temperature for 2 hours, and then raised to 530°C at a rate of 0.2°C / min. And keep the temperature for 5h, and cool down to room temperature naturally to get the g-C 3 N 4 / ZnO / activated ...

Embodiment 3

[0032] a g-C 3 N 4 The preparation method of the functional carbon adsorption material of / ZnO / activated carbon comprises the following steps:

[0033] (1) Crushing, screening and drying wood or bamboo raw materials;

[0034] (2) Take 10g of the dried raw material and heat it up to 450°C at a rate of 5°C / min under the protection of high-purity nitrogen, keep it warm for 1.5h, and cool it down to room temperature naturally;

[0035](3) Add 2g of zinc acetate to 50 mL of distilled water under stirring conditions, and react for 20 minutes, then add 3g of melamine, continue stirring and reacting for 30 minutes, fully mix with the material prepared in step (2), dip for 24 hours, at 80 drying;

[0036] (4) The material prepared in step (3) was raised from room temperature to 500°C at a rate of 10°C / min under the protection of high-purity nitrogen, kept at a constant temperature for 2 hours, and then raised to 530°C at a rate of 0.2°C / min. And keep the temperature for 5h, and coo...

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Abstract

The invention discloses a g-C3N4 / ZnO / activated carbon functional carbon adsorption material and a preparation method thereof, which uses biomass (wood or bamboo), melamine, and zinc acetate as main raw materials through carbonization, impregnation, activation, and high-temperature polycondensation and other reactions to prepare a functional carbon adsorption material of g-C3N4 / ZnO / activated carbon. In the present invention, the activated carbon precursor is combined with the g-C3N4 precursor and the ZnO precursor, and zinc acetate is used as the activator for the preparation of activated carbon, and the functional carbon adsorption material of g-C3N4 / ZnO / activated carbon is firmly combined and not easy to be lost. , long service life, and in-situ photocatalytic regeneration.

Description

technical field [0001] The invention belongs to the field of preparation of functional carbon adsorption materials, in particular to a g-C 3 N 4 Functional carbon adsorption material of / ZnO / activated carbon and its preparation method. Background technique [0002] Activated carbon is widely used in food industry, chemical industry, environmental protection and other fields because of its developed pore structure, strong adsorption capacity, rich surface functional groups, high mechanical strength, and chemical inertness. However, due to the lack of activated carbon varieties, low technical content, and lack of functional high-quality special activated carbon, my country's activated carbon industry is restricted from moving towards a higher level of application. Modification of activated carbon to develop functional activated carbon that can efficiently and deeply purify pollutants is an effective way to reduce the cost of activated carbon, expand its scope of use, and imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01J27/24C02F1/28C02F1/30C02F101/30
CPCB01J20/02B01J20/06B01J20/20B01J20/3416B01J20/3441C02F1/281C02F2101/30
Inventor 陈孝云陈星陆东芳叶红华月钿
Owner FUJIAN AGRI & FORESTRY UNIV
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