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Synthesis method and application of Tb<3+>-modified Al-BTC nanotubes

A synthesis method and nanotube technology, which is applied in the field of synthesis of Al-BTC nanotubes, can solve problems such as strict equipment requirements

Active Publication Date: 2016-09-07
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the method of covalent post-synthesis modification is used by more scientific researchers. For example, Bing Yan's research group used covalent post-synthesis to modify MOFs to obtain europium ion-modified metal organic framework MIL-124 (Ga 2 (OH) 4 (C 9 o 6 h 4 )) and with Ln 3+ (Ln=Sm, Dy, Nd, Yb, Er) modified MIL-121 (Al (OH) (H 2 btec)·H 2 O), and it is used for the detection of ions and organics (ACS Appl.Mater.Interfaces 2015,7,721-729; J.Mater.Chem.A,2015,3,4788–4792), but this method uses additives, equipment strict requirements

Method used

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  • Synthesis method and application of Tb&lt;3+&gt;-modified Al-BTC nanotubes

Examples

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Effect test

example 1

[0043] Synthesis of Al-BTC nanotubes: 0.3mol / L AlCl respectively 3 ·6H 2 O solution and 0.3mol / L basic salt solution of trimesic acid, each take 1mL of the solution, add it to a beaker containing a mixed solvent of methanol and absolute ethanol (1:1), and maintain the concentration by adding the mixed solvent. The total volume of the solvent remains unchanged (20mL), put it on a magnetic stirrer and stir for 30min. After the reaction is completed, wash it several times with deionized water and absolute ethanol, and dry it in a vacuum drying oven at 60°C for 12h to constant weight. That's it. figure 1 a and figure 1 b is the scanning electron microscope picture and the transmission electron microscope picture of the Al-BTC nanotube obtained in this embodiment, as can be seen from the figure, the Al-BTC nanotube obtained by this method has a regular tubular shape, and the size and shape are basically the same ; figure 2 It is the obtained Al-BTC nanotube X-ray powder diffra...

example 2

[0045] Synthesis of Al-BTC nanotubes: 0.3mol / L AlCl respectively 3 ·6H 2 O solution and 0.3mol / L basic salt solution of trimesic acid, each measure 1mL solution, add methanol and ethanol with different ratios (1:9, 1:3, 4:6, 6:4) Keep the total volume of the solvent constant (20mL) in a beaker of a mixed solvent, put it on a magnetic stirrer and stir for 30min, after the reaction is over, wash it several times with deionized water and absolute ethanol, then put it in a vacuum drying oven Dry to constant weight at 60°C. Image 6 It is a scanning electron microscope image of Al-BTC nanotubes obtained according to different ratios of methanol and ethanol in this example, wherein a) the volume ratio of methanol and ethanol is 1:9, b) the volume ratio of methanol and ethanol is 1:3, c ) The volume ratio of methanol and ethanol is 4:6, d) The volume ratio of methanol and ethanol is 6:4.

example 3

[0047] Synthesis of Al-BTC nanotubes: 0.3mol / L AlCl respectively 3 ·6H 2 O solution and 0.3mol / L basic salt solution of trimesic acid, each measure a certain amount of solution (1mL), add a mixed solvent containing N,N-dimethylformamide and ethanol (1:1) Keep the total volume of the solvent constant (20mL) in a beaker, put it on a magnetic stirrer and stir for 10min-1h, after the reaction is over, wash it several times with deionized water and absolute ethanol, then put it in a vacuum drying oven for 60 °C to a constant weight. (Its synthetic morphology is as figure 1 shown)

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Abstract

The invention discloses a synthesis method and an application of Tb<3+>-modified Al-BTC nanotubes. A tubular Al-BTC nanostructure is fast synthesized at room temperature through using a direct precipitation technology with soluble aluminum salt as a metal source and basic salt of 1,3,5-benzenetricarboxylic acid (1,3,5-BTC) as an organic ligand, and the nanotubular morphology of the above obtained product has not yet been reported in literatures. The method has the advantages of no need of other additives or templates in the reaction, no need of too high temperature or strict device requirements, short time, and non-strict reaction environment requirements. An Al-BTC / Tb fluorescent material is obtained after room temperature post-treatment of the Al-BTC nanotubes, and the Al-BTC / Tb fluorescent material has a good fluorescence quenching effect on cations iron ions and anions dichromate radicals, can be used to simply and fast carry out qualitative detection of above ions, and also can realize quantitative detection of ferric iron ions in a low concentration range.

Description

technical field [0001] The invention belongs to the technical field of synthesis of metal organic frameworks, in particular to a Tb 3+ Synthesis method and application of modified Al-BTC nanotubes. Background technique [0002] Metal-organic frameworks (MOFs) or coordination polymers (CPs), which are linked by metal ions and organic ligands, have attracted more and more researchers because of their various coordination methods. Due to the diversity of synthesis methods, MOFs or CPs can have different structures and topological configurations, and their structures and properties mainly depend on the coordination methods and geometric configurations of metals and ligands. Therefore, organic groups play a vital role in the structure and formation of MOFs or CPs, and carboxylic acid ligands as O-donors have strong coordination ability of carboxylic acid oxygen atoms and rich coordination modes, The formed complex skeleton structure has high thermal stability, can be tailored, ...

Claims

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Application Information

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IPC IPC(8): C09K11/06G01N21/64C07C63/307C07C51/00
CPCC07B2200/13C07C51/418C09K11/06C09K2211/186G01N21/6428C07C63/307
Inventor 倪永红道逍遥钱广萍
Owner ANHUI NORMAL UNIV
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