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Multifunctional graphene quantum dot detection agent and application thereof

A technology of graphene quantum dots and detection agents, applied in the field of graphene, can solve the problems of equipment waste and waste

Active Publication Date: 2021-09-14
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the interior decoration process, the formaldehyde content in the air is often tested. In this process, very professional equipment is required. If the residents purchase it separately, the equipment is almost discarded after the decoration is completed, causing a lot of waste.

Method used

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  • Multifunctional graphene quantum dot detection agent and application thereof
  • Multifunctional graphene quantum dot detection agent and application thereof
  • Multifunctional graphene quantum dot detection agent and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a multifunctional graphene quantum dot detection agent, and its preparation method is as follows: dissolving p-phenylenediamine in alcohol and heating (the concentration of p-phenylenediamine is 0.35mg / mL), wherein the heating temperature is 180°C , the heating time is 10h to obtain a graphene quantum dot solution, and then the graphene quantum dot solution is dropped on the test paper, the graphene quantum dots are dispersed into the test paper, and the detection test paper is obtained after the solvent is volatilized. Prepare multiple test strips for backup.

[0034] The graphene quantum dots penetrate into the inside of the test paper after being dropped onto the test paper, so the graphene quantum dots in the final test paper will not desorb. Among them, the graphene quantum dot solution emits red fluorescence under the irradiation of ultraviolet light, so the detection test paper is red under the excitation of ultraviolet light.

[0035] s...

Embodiment 2

[0048] The difference between this example and example 1 is that the heating time of p-phenylenediamine in alcohol is 2h.

Embodiment 3

[0050] The difference between this example and Example 1 is that the heating time of p-phenylenediamine in alcohol is 6h.

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Abstract

The invention discloses a multifunctional graphene quantum dot detection agent and application thereof. P-phenylenediamine is dissolved in alcohol and heated to obtain a graphene quantum dot solution, then the graphene quantum dot solution is dripped on test paper, graphene quantum dots are dispersed into the test paper, detection test paper is obtained after a solvent is volatilized, and the detection test paper is red under the excitation of ultraviolet light. P-phenylenediamine is used as a raw material, so that the graphene quantum dots finally emit stronger red fluorescence under the excitation of ultraviolet light, the color of the detection test paper is brighter red, the red fluorescence is quenched by formaldehyde in a formaldehyde environment, so that the color of the detection test paper is darkened. As the red color of the detection test paper is very strong at the beginning, low-concentration formaldehyde also enables the detection test paper to fade more obviously. Therefore, the detection lower limit of the detection test paper is effectively improved.

Description

【Technical field】 [0001] The invention relates to a multifunctional graphene quantum dot detection agent and an application thereof, belonging to the field of graphene. 【Background technique】 [0002] During the interior decoration process, the formaldehyde content in the air is often tested. In this process, very professional equipment is required. If the residents purchase it separately, the equipment is almost discarded after the decoration is completed, causing a lot of waste. 【Content of invention】 [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a multifunctional graphene quantum dot detection agent and its application. [0004] To solve the above technical problems, the present invention adopts the following technical solutions: [0005] A multifunctional graphene quantum dot detection agent, the preparation method is as follows: p-phenylenediamine is dissolved in alcohol and heated to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
CPCG01N21/783Y02A50/20
Inventor 唐思源陈达王昌兴杨永胜李夏梦李婷婷
Owner NINGBO UNIV
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