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Method for preparing bimetallic oxide nanoparticles

A bimetallic oxide, nanoparticle technology, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of poor crystallinity, lack of functional groups on the surface of nanoparticles, and uneven morphology and size of MWOX nanoparticles. Achieving the effect of high efficiency, controllable size and good stability

Inactive Publication Date: 2019-08-23
SUZHOU UNIV
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  • Abstract
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Problems solved by technology

This method allows rapid preparation of large quantities of MWO X Nanoparticles, the reaction conditions are mild, and the cost is low, but the MWO prepared by this method X The shape and size of nanoparticles are not uniform, the crystallinity is very poor, and the functional groups on the surface of nanoparticles are missing, so it is difficult to further modify

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  • Method for preparing bimetallic oxide nanoparticles
  • Method for preparing bimetallic oxide nanoparticles
  • Method for preparing bimetallic oxide nanoparticles

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preparation example Construction

[0034] In view of the problems of uneven size, lack of functional groups on the surface, and poor material stability in the preparation of double metal oxide nanoparticles by chemical precipitation in the prior art, this application adopts the solvothermal method of pyrolysis to efficiently and controllably prepare a uniform size, stable Double metal oxide nanoparticles with good properties and rich surface functional groups. Specifically, the embodiment of the present invention discloses a method for preparing double metal oxide nanoparticles as shown in formula (I), comprising the following steps:

[0035] A) Mix W source and high-boiling point organic solvent, heat to 100-160°C, add oleic acid and oleylamine, and obtain the primary reactant after reaction;

[0036] B) heating the primary reactants to 240-320°C, adding M source, and obtaining double metal oxide nanoparticles after reaction;

[0037] MWO X (I);

[0038] Wherein, M is selected from one of Mn, Fe, Co, Ni, C...

Embodiment 1

[0048] Example 1MnWO X nanoparticles

[0049] Add raw material precursor tungsten hexacarbonyl and high boiling point mixed solvent dibenzyl ether / dodecanol into the reactor, heat the reaction system to 100-160°C under the protection of nitrogen, add oleic acid and oleylamine (organic solvent A, oleic acid , the mol ratio of oleylamine is: 1:0.03~0.15:0.03~0.15); Continue heating reaction system to 240~320 ℃, add another raw material precursor manganese acetylacetonate powder (combined raw material precursor mole The ratio is 1:0.5~5); react fully for 0.5~4 hours, stop heating, and wait for the temperature of the reaction system to drop to room temperature; add excess ethanol to the product for precipitation, centrifuge to take the precipitate and wash it repeatedly with cyclohexane to obtain granular Double metal oxide MnWO with a diameter of about 6 nm X nanoparticles.

[0050] figure 1 is a synthetic double metal oxide MnWO X The X-ray diffraction spectrum of nanoparti...

Embodiment 2

[0052] Example 2: FeWO X nanoparticles

[0053] Add raw material precursor tungsten hexacarbonyl and high boiling point mixed solvent dibenzyl ether / dodecanol into the reactor, heat the reaction system to 100-160°C under the protection of nitrogen, add oleic acid and oleylamine (organic solvent A, oleic acid , the mol ratio of oleylamine is: 1:0.03~0.15:0.03~0.15); Continue to heat the reaction system to 240~320 ℃, add another raw material precursor iron acetylacetonate powder (combined raw material precursor mole The ratio is 1:0.5~5); react fully for 0.5~4 hours, stop heating, and wait for the temperature of the reaction system to drop to room temperature; add excess ethanol to the product for precipitation, centrifuge to take the precipitate and wash it repeatedly with cyclohexane to obtain granular Double metal oxide FeWO with a diameter of about 20 nm X (3.5<X<4) Nanoparticles.

[0054] image 3 is a synthetic double metal oxide FeWO X The X-ray diffraction spectrum ...

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Abstract

The invention provides a method for preparing bimetallic oxide nanoparticles. The method comprises the following steps: A) mixing a source W and a high-boiling-point organic solvent, heating to a temperature of 100-160 DEG C, adding oleic acid and oleylamine, and reacting to obtain a primary reactant; and B) heating the primary reactant to a temperature of 240-320 DEG C, adding a source M, and reacting, thereby obtaining the bimetallic oxide nanoparticles. According to the method disclosed by the invention, the bimetallic oxide nanoparticles with uniform size, excellent stability and abundantsurface functional groups are efficiently and controllably prepared by adopting a high temperature decomposition solvothermal method.

Description

technical field [0001] The invention relates to the technical field of double metal oxides, in particular to a method for preparing double metal oxide nanoparticles. Background technique [0002] It is well known that the properties of double metal oxides are superior to those of single-component metal oxides; double metal oxides have been widely used in the fields of catalysis, sensing, batteries and biomedicine due to their diversity of components and structures. Research. double metal oxide MWO X Nanoparticles exhibit excellent properties in mechanics, magnetism, catalysis, optics, and biological activity due to size effects, interface effects, and quantum effects, especially because of their unique electrical, optical, and magnetic properties. There is huge potential in areas such as luminescence, optical fibers, scintillators, sensors, and magnetic materials. [0003] Transition metal MWO X There are many synthetic methods of nanoparticles, including gel method (J.P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G41/02C01G45/02C01G49/00C01G49/02C01G51/04B82Y30/00
CPCB82Y30/00C01G41/02C01G45/02C01G49/0018C01G49/02C01G51/04C01P2002/72C01P2004/03C01P2004/64
Inventor 刘庄巩飞程亮
Owner SUZHOU UNIV
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