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

Rare earth luminescence catalyst, and preparation method and applications thereof

A rare earth luminescence and catalyst technology, which is applied in catalytic reactions, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of complex preparation and unsatisfactory catalytic effects, and achieve simple synthesis methods, low production costs, and good performance. The effect of mechanical properties

Active Publication Date: 2016-09-07
SOUTHEAST UNIV
View PDF11 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of these synthesized catalysts is relatively complicated, and the catalytic effect is not satisfactory.

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
  • Rare earth luminescence catalyst, and preparation method and applications thereof
  • Rare earth luminescence catalyst, and preparation method and applications thereof
  • Rare earth luminescence catalyst, and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of the rare earth luminescent catalyst Tb-Cu-PA nanoparticles of the present invention specifically comprises the following steps:

[0029] Step 1, to 5mL N,N-dimethylformamide, add 2mL of Tb(NO 3 ) 3 aqueous solution and 2 mL of 20 mM Cu(NO 3 ) 2 Aqueous solution, mixed uniformly to obtain mixed solution A; then, under constant stirring, 2 mL of N,N-dimethylformamide solution dissolved with isophthalic acid was added to mixed solution A to obtain mixed solution B; dissolved with isophthalic acid The N, N-dimethylformamide solution of phthalic acid has a concentration of isophthalic acid of 40 mM;

[0030] Step 2, the mixed solution B of step 1 was stirred and reacted at room temperature for 20 minutes, transferred to a polytetrafluoroethylene-lined reactor, reacted at 160°C for 3 hours, cooled naturally to room temperature, and centrifuged to collect the resulting light green precipitate; The precipitate was washed twice with absolute ethanol...

Embodiment 2

[0035] The application of the rare earth luminescent catalyst Tb-Cu-PA nanoparticles prepared in Example 1 in the reaction of hydrogen peroxide and ascorbic acid:

[0036] Add 10 μL of HO to 960 μL of HAc-NaAc buffer (10 mM, pH 5.05) 2 o 2 Solution (200mM) and 10μL ascorbic acid (200mM), mix well, then add 20μL Tb-Cu-PA suspension (35mg / mL), react at room temperature for 20min, and then measure their fluorescence intensity under 310nm excitation.

[0037] figure 2 The luminescence intensity figure of the rare earth luminescent catalyst Tb-Cu-PA that is prepared in embodiment 1 in the process of catalyzing hydrogen peroxide and ascorbic acid reaction; In the presence of the catalyst Tb-Cu-PA, fluorescence appeared in the solution within a few minutes, and the fluorescence intensity gradually became stronger as the reaction progressed until it stopped changing, indicating that the reaction was complete.

Embodiment 3

[0039] The application of the rare earth luminescence catalyst Tb-Cu-PA nanoparticle that embodiment 1 makes aspect the hydrogen peroxide concentration in the measurement solution:

[0040] Add 20 μL of Tb-Cu-PA suspension (35 mg / mL) and 10 μL of ascorbic acid (200 mM) to 960 μL of HAc-NaAc buffer (10 mM, pH 5.05), mix well, and then add different volumes of H 2 o 2 solution (5mM) and ultrapure water to the above mixture, making H 2 o 2 The final concentrations were 0, 1, 100, 240, 360 and 500 μM, respectively. After these mixed solutions were reacted at room temperature for 20 minutes, their fluorescence spectra were measured under 310nm excitation to obtain the working curve of fluorescence intensity and hydrogen peroxide concentration, and the fluorescence color maps containing hydrogen peroxide solutions with different concentrations were taken under a 302nm ultraviolet lamp.

[0041] Add 20 μL of Tb-Cu-PA suspension (35 mg / mL) and 10 μL of ascorbic acid (200 mM) to 960...

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 rare earth luminescence catalyst. The rare earth luminescence catalyst is porous coordination polymer nanoparticles capable of realizing catalysis and luminescence indication of the hydrogen peroxide reaction progress, and is prepared through a solvothermal reaction of rare earth terbium ions, copper ions and ligand molecules, wherein the ligand molecules are m-phthalic acid. The invention also discloses a preparation method of the rare earth luminescence catalyst, and applications of the rare earth luminescence catalyst in catalysis of a reaction of hydrogen peroxide and ascorbic acid, in displaying of the reaction progress and in determination of the concentration of hydrogen peroxide or ascorbic acid. The rare earth luminescence catalyst has an excellent catalysis effect on the hydrogen peroxide reaction, and also can realize luminescence indication of the reaction progress, so the rare earth luminescence catalyst is a reaction catalyst and also is a reaction indicator. The rare earth luminescence catalyst provides a simple and rapid analysis method for catalysis of the hydrogen peroxide reaction and determination of the concentration of hydrogen peroxide or ascorbic acid.

Description

technical field [0001] The invention relates to a rare earth luminescent catalyst, and also relates to a preparation method and application of the rare earth luminescent catalyst, belonging to the technical field of catalysis and luminescent indicating materials. Background technique [0002] Hydrogen peroxide, as an oxidizing agent, participates in many redox reactions, but many of the participating reactions proceed slowly at room temperature and require catalysts. Peroxidase can catalyze the reaction of hydrogen peroxide to proceed rapidly. However, as a protein, the enzyme is easily denatured when heated, and easily loses its catalytic activity in some chemical environments, and their preparation, purification and storage are time-consuming and laborious. Several catalysts capable of catalyzing the redox reaction of hydrogen peroxide have been successfully developed, including oxides, metals, sulfides, carbons, and multimetal oxide salts. However, the preparation of the...

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): B01J31/22B01J35/10C08G83/00G01N21/64
CPCG01N21/6428G01N21/6486C08G83/008B01J31/1691B01J31/2239B01J2231/70B01J2531/0202B01J2531/16B01J2531/38B01J35/61
Inventor 陈扬戚泽万
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