Graphene nano-composite gel for removing formaldehyde and preparation process of graphene nano-composite gel

A nano-composite and preparation technology, applied in the field of graphene nano-composite gel and preparation technology, can solve the problems of low content and low decomposition efficiency, and achieve high-efficiency decomposition of formaldehyde and high stability

Pending Publication Date: 2021-09-14
QINGDAO REALEADER ADVANCED MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a formaldehyde-removing graphene nanocomposite gel and its preparation process. The aldehyde-removing material has high aldehyde-removing efficiency, which is conducive to popularization and use, and solves the problem that the current common photocatalyst can only be used under ultraviolet light conditions. Achieve the effect of decomposing formaldehyde, but the ultraviolet light area in sunlight is small and the content is relatively low
Therefore, although ordinary photocatalysts have the function of decomposing formaldehyde for a long time, the problem of low decomposition efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of graphene nanocomposite gel that removes formaldehyde, raw material weight fraction is as follows:

[0034] 8-14 parts of graphene oxide, 2-5 parts of concentrated sulfuric acid, 2-5 parts of phosphoric acid, 1-1.5 parts of plant essential oil, 3000-5000 parts of butyl titanate, 60-80 parts of cerium nitrate, 2000-3000 parts of absolute ethanol 300-500 parts of dilute hydrochloric acid of PH=3-4.

Embodiment 2

[0036] A kind of preparation technology of the graphene nanocomposite gel that removes formaldehyde, concrete steps are as follows:

[0037] Step 1: Take out a certain amount of graphene oxide, grind the graphene oxide, use a multi-stage grinder, and a screening structure is provided below each stage of the grinding structure of the multi-stage grinder, and the selected particle size range is 5.0 - 10.0μm graphene oxide;

[0038] Add butyl titanate to the container, slowly add absolute ethanol dropwise under high-speed stirring, and continue stirring for 45 minutes until the solution is light yellow and transparent;

[0039] Step 2: Ultrasonically disperse graphene oxide in dilute hydrochloric acid, while stirring, evenly drop cerium nitrate with a pH range of 3-4, and stir at high speed for 30 minutes;

[0040] Slowly add absolute ethanol dropwise to the above mixture, continue to stir for 30 minutes, then stand still and age at room temperature for 5 days;

[0041] Dry at ...

Embodiment 3

[0049] A kind of preparation technology of the graphene nanocomposite gel that removes formaldehyde, concrete steps are as follows:

[0050] Step 1: Take out a certain amount of graphene oxide, grind the graphene oxide, use a multi-stage grinder, and a screening structure is provided below each stage of the grinding structure of the multi-stage grinder, and the selected particle size range is 5.0 - 10.0μm graphene oxide;

[0051] Add butyl titanate to the container, slowly add absolute ethanol dropwise under high-speed stirring, and continue stirring for 45 minutes until the solution is light yellow and transparent;

[0052] Step 2: Ultrasonically disperse graphene oxide in dilute hydrochloric acid, while stirring, evenly drop cerium nitrate with a pH range of 3-4, and stir at high speed for 30 minutes;

[0053] Slowly add absolute ethanol dropwise to the above mixture, continue to stir for 30 minutes, then stand still and age at room temperature for 5 days;

[0054] 20~30℃ ...

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Abstract

The invention relates to the technical field of preparation of formaldehyde removal materials, and discloses graphene nano-composite gel for removing formaldehyde, a preparation process and application. Raw materials of the graphene nano-composite gel comprise graphene oxide, concentrated sulfuric acid, phosphoric acid and plant essential oil, and the graphene nano-composite gel is high in formaldehyde removal efficiency. At present, a common photocatalyst achieves the effect of decomposing formaldehyde under the ultraviolet irradiation condition, an ultraviolet region in sunlight is small and the content is low, and the material prepared by the invention achieves the effect of efficiently decomposing formaldehyde under the ultraviolet-free condition.

Description

technical field [0001] The invention relates to the technical field of preparation of formaldehyde-removing materials, in particular to a formaldehyde-removing graphene nanocomposite gel and a preparation process. Background technique [0002] In recent years, the problem of air pollution has been an urgent problem for governments around the world. The flue gas released by burning fossil fuels (coal, oil, natural gas, etc.) in energy, chemical industry, metallurgy, transportation and other industries contains a large amount of SO2 and NOx, causing serious pollution to the atmosphere. In addition, all kinds of dust produced by human activities, as well as the pollution of solid suspended particles such as sand and dust caused by climate deterioration, and the volatile organic pollutants from various decorative materials and oral chemicals are increasing. land into residential and public buildings, leading to a sharp increase in the degree of pollution of the living environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J37/03B01J37/08B01J37/32B01D53/86B01D53/72B01D53/44
CPCB01J23/10B01J23/002B01J35/004B01J35/0013B01J37/033B01J37/082B01J37/088B01J37/036B01J37/32B01D53/8668B01D53/8687B01D53/007B01D2257/704B01D2259/802
Inventor 李智璐连丽青吴金英
Owner QINGDAO REALEADER ADVANCED MATERIALS TECH
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