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Method for preparing multi-metal-oxygen cluster-doped silicon dioxide nanoparticles

A technology of polymetallic oxygen clusters and nanoparticles, applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of instability, limited universality, easy decomposition, etc., to achieve size controllable, leakage suppression, Good effect of monodispersity

Inactive Publication Date: 2011-02-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach cannot be universally applied to most polymetalloxine clusters
This is because most polymetallic oxygen clusters are pH unstable, especially under alkaline conditions, they are easily decomposed, while the in situ sol-gel reaction needs to occur under alkaline conditions, which is a huge contradiction. The generalizability of this method is limited by the

Method used

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  • Method for preparing multi-metal-oxygen cluster-doped silicon dioxide nanoparticles
  • Method for preparing multi-metal-oxygen cluster-doped silicon dioxide nanoparticles
  • Method for preparing multi-metal-oxygen cluster-doped silicon dioxide nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0039]Example 1-1: N, N-dimethylbis-(11-hydroxyl-undecyl) ammonium bromide (DOHDA for short) coated Na 9 [EuW 10 o 36 ](PM-1)

[0040] Dissolve 0.2 g DOHDA in 20 mL deionized water, 0.14 g Na 9 wxya 10 o 36 Dissolve in 20 ml deionized water, DOHDA and Na 9 wxya 10 o 36 The molar ratio is 9:1 (the charge ratio is 9:9). Under stirring, will contain Na 9 wxya 10 o 36 The aqueous solution of DOHDA was added dropwise to the aqueous solution of DOHDA. After the dropwise addition, continue to stir for 5 hours, filter the resulting precipitate with a sand funnel, and dry the white solid in vacuum at room temperature to obtain DOHDA-embedded Na 9 [EuW 10 o 36 ] Complex (abbreviated as SEP-1), the yield was 60%. SEP-1 elemental analysis: C% 35.45, H% 6.81, N% 1.52, the chemical formula of SEP-1 is (DOHDA) 6 wxya 10 o 36 4H 2 O.

Embodiment 1-2

[0041] Example 1-2: 11-Hydroxy-Undecyl-Dimethyl Ammonium Hydrogen Bromide (referred to as HUDAH) coating K 12 [EuP 5 W 30 o 110 ](PM-2)

[0042] Dissolve 0.2 g of HUDAH in 20 mL of deionized water, 0.24 g of K 12 [EuP 5 W 30 o 110 ] dissolved in 20 ml deionized water, HUDAH and K 12 [EuP 5 W 30 o 110 ] The molar ratio is 12:1 (the charge ratio is 12:12). Under stirring, will contain K 12 [EuP 5 W 30 o 110 ] was added dropwise to the aqueous solution of HUDAH. After the dropwise addition, continue to stir for 5 hours, filter the resulting precipitate with a sand funnel, obtain a white solid and dry it in vacuum at room temperature to obtain HUDAH-embedded K 12 [EuP 5 W 30 o 110 ] Complex (abbreviated as SEP-2), the yield was 55%. SEP-2 elemental analysis: C% 18.00, H% 3.26, N% 1.60, the chemical formula of SEP-2 is (HUDAH) 11 HE 5 W 30 o 110 ·3H 2 O.

Embodiment 1-3

[0043] Example 1-3: DOHDA coated K 8 [Co 2 W 12 o 42 ](PM-3)

[0044] Dissolve 0.2 g of DOHDA in 20 mL of deionized water, 0.19 g of K 8 co 2 W 12 o 42 Dissolve in 20 ml deionized water, DOHDA and K 8 co 2 W 12 o 42 The molar ratio is 8:1 (the charge ratio is 8:8). Under stirring, will contain K 8 co 2 W 12 o 42 The aqueous solution of DOHDA was added dropwise to the aqueous solution of DOHDA. After the dropwise addition, continue to stir for 5 hours, filter the resulting precipitate with a melting sand funnel, obtain a green solid and dry it in vacuum at room temperature to obtain DOHDA-embedded K 8 [Co 2 W 12 o 42 ] Complex (abbreviated as SEP-3), the yield was 55%. SEP-3 elemental analysis: C% 34.65, H% 6.66, N% 1.70, the chemical formula of SEP-3 is (DOHDA) 7 co 2 W 12 o 42 4H 2 O.

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Abstract

The invention relates to the field of chemistry and materials, in particular to a new method for preparing multi-metal-oxygen cluster-doped silicon dioxide nanoparticles, which is developed by performing the hydroxylation modification of the surface of a multi-metal-oxygen cluster by using electrostatic interaction and introducing the hydroxylated multi-metal-oxygen cluster into silicon dioxide by a sol-gel process. The multi-metal-oxygen cluster-doped silicon dioxide nanoparticles prepared by the method have the characteristics of controllable size, high monodispersity and the like, and the reaction yield is 100 percent. The method ensures the complete structure of the multi-metal-oxygen cluster and the physical and chemical properties of the multi-metal-oxygen cluster. The obtained nano material, when used, can effectively prevent the leakage of the multi-metal-oxygen cluster and therefore is widely applicable to a majority of multi-metal-oxygen clusters.

Description

technical field [0001] This invention relates to the field of chemistry and materials, in particular to a new method for preparing polymetallic oxygen cluster-doped silica particles, which is to carry out hydroxylation modification on the surface of polymetallic oxygen clusters through electrostatic interaction, and then undergo sol- The gel method introduces hydroxylated polymetallic oxygen clusters into silica and develops a new method for preparing polymetallic oxygen cluster-doped silica nanoparticles. Background technique [0002] Polyoxometallic clusters, also known as polyoxometalates, are a class of nanoscale inorganic materials. Polymetallic oxygen clusters are usually composed of pre-transition metal oxides, which have rich chemical compositions and diverse topological structures, which make polymetallic oxygen clusters show great potential in the fields of catalysis, medicine, magnetism, proton conductors, and optics. application potential. However, polymetallic...

Claims

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Application Information

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IPC IPC(8): B82B3/00
Inventor 吴立新赵元元李文
Owner JILIN UNIV
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