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Small-size double-transition metal oxide nano-cluster and preparation method thereof

A transition metal and nanocluster technology, applied in the field of nanomaterials, can solve the problem of less metal oxide nanoclusters, and achieve the effects of abundant oxygen vacancy defects, high yield, and simple and easy synthesis method.

Pending Publication Date: 2022-05-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, based on the search for patents, it was found that there are many clusters of noble metals, but few metal oxide nanoclusters.

Method used

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  • Small-size double-transition metal oxide nano-cluster and preparation method thereof
  • Small-size double-transition metal oxide nano-cluster and preparation method thereof
  • Small-size double-transition metal oxide nano-cluster and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The synthetic product of example 1 is Fe 0.5 Ni 0.5 O 1.25 @1-ethyl-3-methylimidazole

[0035] With ~ 40.4mg Fe (no 3 ) 3 9H 2O and 29.1mg Ni (no 3 ) 2 6H 2 O as the reaction raw material, put it into a 50ml three mouth round bottom flask, dissolve it in 30ml methanol / water solution system, add ~ 204mg 1-ethyl-3-methylimidazole hexafluorophosphate, stir at room temperature for 30 minutes, add 160mg NaOH, stir at room temperature for another 4 hours, stop the reaction and obtain the product Fe 0.5 Ni 0.5 O 1.25 @1-ethyl-3-methylimidazole.

Embodiment 2

[0036] The synthetic product of example 2 is Co 0.5 Ni 0.5 O 1 @1-butyl-3-methylimidazole

[0037] With ~ 29.1mg CO (no 3 ) 2 6H 2 O and 29.1mg Ni (no 3 ) 2 6H 2 O as the reaction raw material, put it into a 50ml three mouth round bottom flask, dissolve it in 30ml methanol / water solution system, add ~ 213mg 1-butyl-3-methylimidazole hexafluorophosphate, stir at room temperature for 30 minutes, add 160mg NaOH, stir at room temperature for another 4 hours, stop the reaction and obtain the product Co 0.5 Ni 0.5 O 1 @1-butyl-3-methylimidazole. The size of the obtained nano cluster is similar to that of embodiment 1 of transmission electron microscope.

Embodiment 3

[0038] The synthetic product of example 3 is Cu 0.33 Ni 0.67 O 1 @1-aminopropyl-3-methylimidazole

[0039] With ~ 16.1mg Cu (no 3 ) 2 3H 2 O and 43.5mg Ni (no 3 ) 2 6H 2 O as the reaction raw material, put it into a 50ml three mouth round bottom flask, dissolve it in 30ml methanol / aqueous solution system, add ~ 138mg 1-aminopropyl-3-methylimidazole tetrafluoroborate, stir at room temperature for 30 minutes, add 214mg Koh, stir at room temperature for another 4 hours, stop the reaction, and obtain the product Cu 0.33 Ni 0.67 O 1 @1-aminopropyl-3-methylimidazole. The high-resolution TEM image of the nanoclusters obtained in example 3 is similar to that in example 1.

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Abstract

The invention provides a small-size double-transition metal oxide nano-cluster and a preparation method thereof. The structural formula of the nano-cluster is M < 1 > < n > M < 21-n > O < m > (at) IL, wherein M1 and M2 are respectively and independently selected from one of Fe, Ni, Co, Zn and Cu; iL is an imidazole type ionic liquid ligand; n is equal to 0.01-1, and n and 1-n represent molar percentage proportions of M2 and M1; m is equal to 1-1.5, and m represents the number of oxygen atoms; and the size of the nano-cluster is 1-2 nanometers. The synthesis method of the small-size double transition metal oxide nano-cluster is simple and easy to implement and high in yield, and compared with common double transition metal oxide nano-particles, the small-size double transition metal oxide nano-cluster has the advantages of being uniform in size, excellent in stability, environmentally friendly and the like.

Description

technical field [0001] The invention belongs to the technical field of nano materials, in particular to the simple and efficient synthesis and preparation of a kind of small-size 1-2nm double transition metal oxide nano clusters. Background technology [0002] In recent years, small-size bimetallic oxide nanoclusters have attracted great interest of researchers at home and abroad because of their unique chemical and physical properties. The size of bimetallic oxide nanoclusters (1-2 nm) is between molecules and traditional nanoparticles. The ultra-small size of bimetallic oxide nanoclusters leads to very high surface atomic occupancy and abundant defects on the surface of metal oxide nanoclusters, such as oxygen vacancies and metal vacancies. Because the size of bimetallic oxide nanoclusters is equivalent to the Fermi wavelength, they have unique electronic structure and excellent performance in many applications, such as oer electrocatalysis. However, traditional synthesis metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J31/28B01J35/00
CPCB01J31/0284B01J31/28B01J35/393B01J35/33
Inventor 李杲郭嵩
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI