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A method for preparing holmium oxide nanomaterials with different shapes

A technology for nanomaterials and holmium oxide, which is applied in the field of preparing holmium oxide nanomaterials, can solve the problems of complex synthesis steps, high difficulty, inability to synthesize nanotube morphology and three-dimensional structure holmium oxide nanomaterials, etc., and achieves excellent performance and stable structure. , the effect of excellent moisture sensitivity

Active Publication Date: 2022-02-22
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problem that the existing method for preparing holmium oxide nanomaterials cannot realize the regulation and control of the morphology of holmium oxide nanomaterials through the adjustment of reactants. Holmium nanomaterials, the prepared holmium oxide nanosheets are thicker in size and have no porous structure on the surface, and provide a method for preparing holmium oxide nanomaterials with different shapes

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  • A method for preparing holmium oxide nanomaterials with different shapes
  • A method for preparing holmium oxide nanomaterials with different shapes
  • A method for preparing holmium oxide nanomaterials with different shapes

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specific Embodiment approach 1

[0038] Specific embodiment one: a kind of method for preparing holmium oxide nanomaterials with different shapes described in this embodiment, it is carried out according to the following steps:

[0039] 1. Dissolve holmium acetylacetonate and urea in the solvent, and magnetically stir for 0.5h to 2h to obtain a uniformly stirred solution;

[0040] The molar ratio of described holmium acetylacetonate and urea is 1:(0.5~6); The volume ratio of the total moles of described holmium acetylacetonate and urea to solvent is 1mmol:(4~13)mL; The described Solvent is made up of ethylene glycol, polyethylene glycol 400 and deionized water; The volume ratio of described ethylene glycol and polyethylene glycol 400 is 1:(0.9~1.1); Described ethylene glycol and deionized The volume ratio of water is 1:(0.15~0.7);

[0041] 2. Place the uniformly stirred solution in a polytetrafluoroethylene-lined stainless steel reaction kettle and seal it, and react for 8h to 16h at a temperature of 140°C t...

specific Embodiment approach 2

[0047] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the holmium oxide nanomaterials prepared in step 2 have nanotubes, spheres formed by self-assembly of nanotubes, nanosheets, or spheres formed by self-assembly of nanosheets. . Others are the same as in the first embodiment.

specific Embodiment approach 3

[0048] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step two, the light yellow precipitate is washed and then dried according to the following steps: wash several times with deionized water and ethanol respectively, and then Under the condition that the temperature is 70°C-100°C, vacuum dry for 5h-12h. Others are the same as in the first or second embodiment.

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Abstract

A method for preparing holmium oxide nanomaterials with different shapes, the invention relates to a method for preparing holmium oxide nanomaterials. The present invention aims to solve the problem that the existing method for preparing holmium oxide nanomaterials cannot realize the regulation and control of the morphology of holmium oxide nanomaterials through the adjustment of reactants. Holmium nanomaterials, the prepared holmium oxide nanosheets are thicker, and there is no problem of porous structure on the surface. Method: 1. Dissolve holmium acetylacetonate and urea in a solvent to obtain a uniformly stirred solution; 2. Seal the evenly stirred solution for reaction, then naturally cool to room temperature and centrifuge to obtain a light yellow precipitate, wash the light yellow precipitate After drying, the holmium oxide nanomaterial precursor is obtained, and the holmium oxide nanomaterial precursor is calcined under air conditions to obtain the holmium oxide nanomaterial. The invention is used for preparing holmium oxide nanometer materials with different shapes.

Description

technical field [0001] The invention relates to a method for preparing holmium oxide nanometer material. Background technique [0002] Holmium oxide (Ho 2 o 3 ) is one of the strongest paramagnetic substances known at present. Because there are a series of sharp peaks in the visible absorption spectrum of glass and solution containing holmium oxide, it is often used as a calibration standard for spectrophotometers. At the same time, it is also It can be used to prepare special colored glass. In recent years, holmium oxide has been gradually applied to the fields of optics and electronics. Therefore, it is very important to prepare holmium oxide nanomaterials with different shapes and controllable adjustment of the shape. At present, the morphology of synthetic holmium oxide nanomaterials mainly includes nanoparticles, nanocrystals, nanofilms, nanowires, nanosheets, etc., and the synthesis method is mainly based on hydrothermal reaction. The morphology of nanomaterials pl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F17/224B82Y40/00G01N27/12
CPCB82Y40/00G01N27/121C01P2004/24C01P2004/64C01P2004/13C01P2004/32
Inventor 徐英明郭传宇程晓丽霍丽华张现发
Owner HEILONGJIANG UNIV
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