Magnetic graphite phase carbon nitride material, and preparation method and applications thereof

A graphite phase carbon nitride and magnetic technology, which is applied in the field of analysis and detection, can solve the problems of long separation time, poor selectivity, and poor safety, and achieve the effect of increasing specific surface area and good selective adsorption capacity

Active Publication Date: 2019-10-15
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, radionuclides in food samples 210 Pb enrichment methods mainly include resin method, precipitation method, solvent extraction method and ion exchange method, etc., but these methods have disadvantages such as poor safety, long separation time, and poor selectivity, which seriously affect the radioactive elements in the sample. 210 Pb determination results (Z. S. Chen, Chin. J. Radiol. Med. Prot. , 1990, 10(1):49−52; X. T. Yang, Chin. J. Radiol. Med. Prot. , 1988, 8(4):254−256)

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
  • Magnetic graphite phase carbon nitride material, and preparation method and applications thereof
  • Magnetic graphite phase carbon nitride material, and preparation method and applications thereof
  • Magnetic graphite phase carbon nitride material, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 as figure 1 Shown, a kind of preparation method of magnetic graphite phase carbon nitride material comprises the following steps:

[0043] (1) Mix 30g urea with 1g BaCl 2 After mixing, dissolve in ultrapure water with 1 times the mass of the mixture, stir at room temperature to fully dissolve, and obtain a triazine structure compound solution containing barium ions.

[0044] (2) Place the triazine structure compound solution containing barium ions in a vacuum drying oven at 60° C. and dry until anhydrous to obtain a white solid.

[0045] (3) The white solid was transferred to a crucible, placed in a muffle furnace, and calcined at a high temperature for 5 hours at a heating rate of 4 °C / min and a temperature of 500 °C to prepare barium ion-doped graphite phase nitride by thermal condensation Carbon material; after the reaction, cool to room temperature to obtain light yellow solid powder.

[0046] (4) Add 0.1 mol / L nitric acid solution to the light yellow ...

Embodiment 2

[0057] Embodiment 2 A kind of preparation method of magnetic graphite phase carbon nitride material comprises the following steps:

[0058] (1) Mix 5g melamine with 1g Ba(NO 3 ) 2 After mixing, dissolve in ultrapure water 3 times the weight of the mixture, stir at room temperature to fully dissolve, and obtain a triazine structure compound solution containing barium ions.

[0059] (2) Place the solution of the triazine structure compound containing barium ions in a vacuum drying oven at 80° C. to dry to anhydrous to obtain a white solid.

[0060] (3) The white solid was transferred to a crucible, placed in a muffle furnace, and calcined at a high temperature for 3 hours at a heating rate of 4 °C / min and a temperature of 580 °C to prepare barium ion-doped graphite phase nitride by thermal condensation Carbon material; after the reaction, cool to room temperature to obtain light yellow solid powder.

[0061] (4) Add 2.0 mol / L nitric acid solution to the light yellow solid pow...

Embodiment 3

[0072] Embodiment 3 A kind of preparation method of magnetic graphite phase carbon nitride material, comprises the following steps:

[0073](1) Mix 10g cyanamide with 0.5g Ba(CH 3 COO) 2 After mixing, dissolve in ultrapure water twice the mass of the mixture, stir at room temperature to fully dissolve, and obtain a triazine structure compound solution containing barium ions.

[0074] (2) Place the triazine structure compound solution containing barium ions in a vacuum drying oven at 70° C. and dry until anhydrous to obtain a white solid.

[0075] (3) The white solid was transferred to a crucible, placed in a muffle furnace, and calcined at a high temperature for 4 hours at a heating rate of 4 °C / min and a temperature of 520 °C to prepare barium ion-doped graphite phase nitride by thermal condensation Carbon material; after the reaction, cool to room temperature to obtain light yellow solid powder.

[0076] (4) Add 1.0 mol / L acetic acid solution to the light yellow solid pow...

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

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention relates to a magnetic graphite phase carbon nitride material. The magnetic graphite phase carbon nitride material is a polymeric compound with a co-surface tri-s-triazine basic structureunit which is constructed taking barium ions as doping ions; the co-surface tri-s-triazine basic structure unit is a layered cavity structure; the pore diameter ranges from 2 to 50nm. The invention also discloses a preparation method and applications of the magnetic graphite phase carbon nitride material. The specific surface area is large, and the adsorption performance and selectivity on radionuclide 210Pb is high.

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular to a magnetic graphite phase carbon nitride material and a preparation method and application thereof. Background technique [0002] The development and utilization of mine resources has caused the natural radionuclides present in the minerals to spread to the surrounding area. Among them, radionuclides 210 Pb is often discharged into the nearby surface water system in the form of wastewater, and enters the human body through drinking water and the food chain, causing internal radiation hazards, causing cell damage and canceration in the human body. Therefore, the detection of trace amounts of radionuclides in food and drinking water 210 The detection of Pb is of great significance. However, in complex samples such as food, radionuclides 210 The concentration of Pb is so low that it cannot be directly measured. Therefore, prior to sample detection, the radionucli...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30G01N21/73G01N1/40
CPCB01J20/0259B01J20/28009B01J20/28033B01J20/28083B01J20/3078G01N1/4055G01N21/73G01N2001/4061
Inventor 师彦平康晶燕哈伟
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap