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A kind of rare earth metal material and its preparation method and application

A rare earth metal material and reaction technology, which is applied in the direction of luminescent materials, analytical materials, and material excitation analysis, etc., can solve the problems of demanding test samples, fixed test locations and durations, high equipment procurement and maintenance costs, and reduce test steps. The effect of simple process

Active Publication Date: 2022-07-12
ANQING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these methods have created a precedent in the field of testing, they still have various shortcomings, such as some have strict requirements on the test samples, some test locations and duration are relatively fixed, and some tests are obviously affected by cross-interference factors, resulting in low sensitivity and accuracy of results. High and equipment procurement and maintenance costs are high, etc.

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  • A kind of rare earth metal material and its preparation method and application
  • A kind of rare earth metal material and its preparation method and application
  • A kind of rare earth metal material and its preparation method and application

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preparation example Construction

[0052] The invention provides a preparation method of rare earth metal material, comprising the following steps:

[0053] The rare earth metal material is obtained by mixing nitrate, aminotriacetic acid and a solvent and performing a coordination reaction.

[0054] In the present invention, the nitrate is preferably neodymium nitrate hexahydrate, terbium nitrate hexahydrate or europium nitrate hexahydrate.

[0055] In the present invention, the molar ratio of the nitrate to aminotriacetic acid is preferably 1-2:1-2, more preferably 1.2-1.8:1.2-1.8, more preferably 1.4-1.6:1.4-1.6.

[0056] In the present invention, the solvent preferably contains water and N,N-dimethylformamide.

[0057] In the present invention, the volume ratio of the water and N,N-dimethylformamide is preferably 1-2:1-2, more preferably 1.2-1.8:1.2-1.8, more preferably 1.4-1.6:1.4 ~1.6.

[0058] In the present invention, the specific polarity prepared by mixing N,N-dimethylformamide and water in proporti...

Embodiment 1

[0072] Take 0.2 mmol of neodymium nitrate hexahydrate, 0.2 mmol of aminotriacetic acid, and 20 mL of solvent; the volume ratio of water and N,N-dimethylformamide in the solvent is 1:1;

[0073] The rare earth metal materials were prepared according to the following method: the neodymium nitrate hexahydrate, aminotriacetic acid and the solvent were mixed by ultrasonic at 40KHz and 25°C for 30min, and then the mixed system was coordinated at 90°C for 72h. After the completion of the coordination reaction , the reaction solution was naturally cooled to room temperature, the impurities were filtered, and the light purple rod-shaped crystal obtained by drying at 25° C. for 48 hours was the rare earth metal material, and was denoted as complex 1.

[0074] The three-dimensional crystal structure of complex 1 is as figure 1 shown, from figure 1 It can be seen that the two metallic neodymiums in the complex are connected by four acetate groups of the shared ligand nitrilotriacetic aci...

Embodiment 2

[0084] Take 2mol terbium nitrate hexahydrate, 2mol aminotriacetic acid, 200L solvent; the volume ratio of water and N,N-dimethylformamide in the solvent is 1:1;

[0085] The rare earth metal materials were prepared according to the following method: the terbium nitrate hexahydrate, aminotriacetic acid and the solvent were mixed by ultrasonic at 30KHz and 28°C for 40min, and then the mixed system was coordinated at 130°C for 72h. After the completion of the coordination reaction , the reaction solution was naturally cooled to room temperature, the impurities were filtered, and the transparent massive particles obtained by drying at 20° C. for 56 h were the rare earth metal materials, denoted as complex 2.

[0086] The three-dimensional crystal structure of complex 2 is as Figure 11 shown, from Figure 11 It can be seen that the two metal terbium in the complex are connected by four acetate groups of the shared ligand nitrilotriacetic acid to form an assembled unit. The three...

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Abstract

The invention belongs to the technical field of material synthesis. The invention provides a rare earth metal material, and the rare earth metal material is obtained by performing a coordination reaction between nitrate and aminotriacetic acid in a solvent. The materials provided in this application use rare earth metals as the bridging atoms of the organic framework, and utilize the special luminescence of rare earth metals to achieve that the whole complex can specifically recognize Fe 3+ The purpose of the ion is to show the obvious fluorescence quenching phenomenon of ferric ions on the rare earth metal material solution. The rare earth metal material provided by the invention can not only qualitatively and quantitatively measure the ferric ions accurately, but also has a simple detection process and greatly reduces the complicated and strict testing steps.

Description

technical field [0001] The invention relates to the technical field of material synthesis, in particular to a rare earth metal material and a preparation method and application thereof. Background technique [0002] As the most common metallic iron among transition metals, Fe 3+ The form of ions is free in every corner of production and life. For example, in industrial production, the emission of iron is an important measure in the detection of wastewater pollution; in vivo, iron ions are capable of binding hemoglobin, binding transport enzymes, acting as signal molecules, and regulating ions. Balance and a series of functions to maintain the homeostasis of the internal environment, so it can be seen that iron ions are an indispensable and necessary trace element; however, once the intracellular Fe 3+ Soaring levels of ions can also cause irreversible damage in diseases such as Alzheimer's, Huntington's and Parkinson's diseases. Therefore, when the above functions are dist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06G01N21/6428C09K2211/182G01N2021/6432
Inventor 庞韬章超江彬彬武琳
Owner ANQING NORMAL UNIV
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