Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Carbon nitride paper-based fluorescence sensor for detecting polycyclic aromatic hydrocarbon, preparation method thereof and application of sensor

A technology of fluorescent sensor and carbon nitride paper, which is applied in the field of fluorescent sensing, can solve the problems of long detection period, complicated operation, and low stability of polycyclic aromatic hydrocarbons, and achieve the goal of improving optical stability, high sensitivity, and stable luminescent performance Effect

Active Publication Date: 2019-12-31
SOUTHEAST UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: Aiming at the problems existing in the prior art, the present invention provides a carbon nitride paper-based fluorescence sensor for detecting polycyclic aromatic hydrocarbons, which can effectively solve the problem of long detection period and complicated operation of polycyclic aromatic hydrocarbons in the prior art. , low stability and expensive

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Carbon nitride paper-based fluorescence sensor for detecting polycyclic aromatic hydrocarbon, preparation method thereof and application of sensor
  • Carbon nitride paper-based fluorescence sensor for detecting polycyclic aromatic hydrocarbon, preparation method thereof and application of sensor
  • Carbon nitride paper-based fluorescence sensor for detecting polycyclic aromatic hydrocarbon, preparation method thereof and application of sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The preparation process of carbon nitride nanocomposites is as follows:

[0047] Urea was raised to 550°C in a muffle furnace at a heating rate of 2°C / min and kept for 2 hours. After natural cooling at room temperature, CNNS was obtained directly, and 30mL of CNNS aqueous solution (0.2mg / mL) was prepared, and ultrasonic 30min (power 100W); Take by weighing 30mLPMAA-Na, 0.2β-CD and mix and stir with above-mentioned CNNS solution, carry out ultrasonic 15min (power is 100W); ) about 15mL, stir evenly, place the mixed solution in a water bath and heat at 80°C for 3 hours, the solution will produce PMAA-CNNS precipitation; after the temperature drops to room temperature, pour out the supernatant, and freeze the gelatinous precipitate at the bottom After drying, the obtained particles are collected for future use to obtain a carbon nitride nanocomposite material.

[0048] The preparation process of the carbon nitride paper-based fluorescent sensor is as follows:

[0049] Ta...

Embodiment 2

[0059] The preparation process of carbon nitride nanocomposites is as follows:

[0060] Dicyandiamide was raised to 550°C for 4 hours at a heating rate of 4°C / min in a muffle furnace. After natural cooling at room temperature, bulk carbon nitride was obtained, and the bulk carbon nitride was subjected to liquid-phase exfoliation by ultrasound for 12 hours. (power 100W) to obtain CNNS; prepare 30mL CNNS aqueous solution (0.5mg / mL), sonicate for 30min (power 100W); weigh 30mL PAM, mix 0.3gβ-CD with the above CNNS solution and stir evenly, and then sonicate for 15min (power 100W); the mixed solution was freeze-dried, and the obtained particles were collected for later use to obtain carbon nitride nanocomposites.

[0061] The preparation process of the carbon nitride paper-based fluorescent sensor is as follows:

[0062] Take 1g of the nanocomposite material and disperse it in 15mL of ethanol, cut the filter paper into 2*1cm 2 The filter paper was soaked in the solution for 20 m...

Embodiment 3

[0067] The preparation process of carbon nitride nanocomposites is as follows:

[0068] Melamine is heated up to 600°C for 4 hours at a heating rate of 4°C / min in a muffle furnace. After natural cooling at room temperature, bulk carbon nitride is obtained, and the bulk carbon nitride is subjected to ultrasonic 12-hour liquid phase stripping (power 100W ), to obtain CNNS; prepare 30mL CNNS aqueous solution (0.05mg / mL), ultrasonic 30min (power 100W); add 0.6g DMA and 0.05g MBA to the CNNS solution and mix, transfer the mixed solution to a vial, and pass nitrogen gas for 3- For 5 minutes, tighten the lid, and irradiate with a 100W fluorescent lamp until the gel is formed; freeze-dry the gel, collect the obtained particles for later use, and obtain a carbon nitride nanocomposite material.

[0069] The preparation process of the carbon nitride paper-based fluorescent sensor is as follows:

[0070] Take 1g nanocomposite and disperse in 20mL DMF, cut the filter paper into 2*1cm 2 s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a carbon nitride paper-based fluorescence sensor for detecting polycyclic aromatic hydrocarbon, a preparation method thereof and application of the carbon nitride paper-based fluorescence sensor. According to the carbon nitride paper-based fluorescence sensor, a carbon nitride nano composite material is prepared; and the carbon nitride nano composite material is loaded on filter paper, so that the carbon nitride paper-based fluorescence sensor can be obtained. On the basis of the excellent luminescence property and film forming process of the carbon nitride, the carbonnitride is compounded with a high polymer material, and an obtained compound is loaded onto the filter paper, so that the carbon nitride paper-based fluorescence sensor can be obtained. By virtue of pi-pi interaction between the CNNS (carbon nitride nanosheet) and PAHs, generated fluorescence is quenched, so that the linear detection of the PAHs is carried out. With the carbon nitride paper-basedfluorescence sensor provided by the invention adopted, the problems of long detection period, complex operation, low stability and the like of the detection of polycyclic aromatic hydrocarbon in the prior art can be solved, the PAHs can be effectively detected. The sensor has the advantages of convenient and rapid detection, easiness in carrying, and high detection sensitivity.

Description

technical field [0001] The invention belongs to the field of fluorescence sensing, and in particular relates to a carbon nitride paper-based fluorescence sensor for detecting polycyclic aromatic hydrocarbons, a preparation method and application thereof. Background technique [0002] Due to the incomplete combustion of carbon-containing compounds in nature, a large number of toxic and carcinogenic polycyclic aromatic hydrocarbons (PAHs) are widely present in the air, soil and food, and the chemical structure of PAHs is very stable, and it is easy to produce abundant in organisms. It is difficult to remove, which seriously threatens human life and health. Therefore, for PAHs, the development of an efficient, sensitive and simple detection method is a hot spot of concern all over the world. As early as 1976, the U.S. Environmental Protection Agency listed 16 kinds of polycyclic aromatic hydrocarbons including "naphthalene, anthracene, and phenanthrene" as priority pollutants;...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/64
CPCG01N21/643G01N2021/6432
Inventor 张袁健韩丹沈艳飞
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com