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Composite oxide nanoparticle capable of emitting THz frequency and preparation method thereof

A composite oxide and nanoparticle technology, which is applied in the field of terahertz pulsed nanomaterials, can solve the problems of low crystallinity of nanometer objects, limited number of processing, and complex nanoparticle processing process.

Active Publication Date: 2020-07-10
陈宛莎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complexity of nanoparticle processing, these different processes lead to lower purity of obtained compounds or lower crystallinity of nanoobjects
In addition, some of these methods are suitable for processing a limited number of nanoparticles using restrictive conditions of temperature and pressure, and are not suitable for large-scale industrial production.
[0009] Therefore, there are technical problems such as complex processing, low purity, and limited processing quantity in the prior art

Method used

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  • Composite oxide nanoparticle capable of emitting THz frequency and preparation method thereof
  • Composite oxide nanoparticle capable of emitting THz frequency and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Embodiment 1, the preparation of ferric sulfate colloidal solution

[0058] The preparation method of described ferric sulfate colloidal solution comprises the following steps:

[0059] (1) wash iron oxide with water and acetone respectively;

[0060] (2) Mix the washed iron oxide with concentrated sulfuric acid, the weight ratio of iron oxide and concentrated sulfuric acid is 1:3, keep the reaction temperature at 50°C, and control the reaction pressure at 50Mpa, stir at a stirring speed of 400rpm for 30min ; The whole reaction system is kept airtight and filled with nitrogen for protection;

[0061] (3) After the stirring is completed, gradually raise the temperature of the reaction system to 70° C., and keep it warm for 1 hour until the solution turns dark brown and forms a colloidal solution.

Embodiment 2

[0062] Embodiment 2, the preparation of erbium sulfate colloidal solution

[0063] The preparation method of described erbium sulfate colloidal solution comprises the following steps:

[0064] (1) wash erbium oxide with water and acetone respectively;

[0065] (2) Mix the washed erbium oxide with concentrated sulfuric acid, the weight ratio of erbium oxide and concentrated sulfuric acid is 1:3, keep the reaction temperature at 50°C, and control the reaction pressure at 50Mpa, stir at a stirring speed of 400rpm for 30min ; The whole reaction system is kept airtight and filled with nitrogen for protection;

[0066] (3) After the stirring is completed, gradually raise the temperature of the reaction system to 70° C., and keep it warm for 1 hour until the solution turns dark brown and forms a colloidal solution.

[0067] Yttrium oxide, thulium oxide, ytterbium oxide, lutetium oxide, and scandium oxide can also produce sulfate ions as above.

Embodiment 3

[0068] Embodiment 3, the preparation of the salt solution of rare earth oxide

[0069] Lanthanum oxide, cerium oxide, praseodymium oxide, neodymium oxide, promethium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, and holmium oxide are dissolved in aqua regia instead of concentrated sulfuric acid, and other rare earth oxide iron oxide mixtures are nanometered. Manufacture of pellets.

[0070] The preparation method of the salt solution of the rare earth oxide comprises the following steps:

[0071] (1) wash the rare earth oxide with water and acetone respectively;

[0072] (2) The rare earth oxide after washing is mixed with aqua regia (the molar ratio of concentrated hydrochloric acid and concentrated nitric acid is 3:1), the weight ratio of rare earth oxide and aqua regia is 1:8, and the reaction temperature is kept at Stir at 50°C for 30min at a stirring speed of 400rpm; keep the entire reaction system airtight, and fill it with n...

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Abstract

The invention belongs to the technical field of terahertz pulse nano materials, and particularly relates to a composite oxide nano particle capable of emitting THz frequency and a preparation method thereof. Rare earth oxide metal and iron oxide react with a concentrated acid respectively to generate corresponding colloidal solutions; by carrying out ultrasonic nonlinear vibration processing through an ammonia water gel system, composite nanoparticles with ferric hydroxide as an inner core and a rare earth metal hydroxide coating the outer layer are generated in a cross-linked grid of the gelsystem, the composite nanoparticles are calcined to obtain composite oxide nanoparticles with ferric oxide as an inner core and rare earth metal oxide coating the outer layer. The composite oxide nanoparticle provided by the invention can release THz frequency at 37 DEG C, has excellent stability and magnetism, can regulate and control THz frequency release power through the intensity of an alternating magnetic field at normal temperature, and is widely applied to the field of biomedicine.

Description

technical field [0001] The invention belongs to the technical field of terahertz pulse nanomaterials, and in particular relates to a composite oxide nanoparticle capable of emitting THz frequency and a preparation method thereof. Background technique [0002] Terahertz (THz), lying between the infrared and millimeter-wave spectral regions, typically between 100 GHz and 15 THz, is currently one of the least explored but most technologically transformative regions of the spectrum. The gigahertz switching speed limit of today's memory / wireless communication devices is about to reach the THz spectrum band, and terahertz pulse technology expands conventional visible / infrared, security screening, drug detection, biometrics, and DNA chip applications. Emerging terahertz technologies, such as quantum cascade lasers, ultrafast nonlinear optical rectification, and photoconductive switches, have promoted the development of various terahertz spectroscopy, imaging, and sensing technologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06C01F17/224C01F17/218C01F17/212C01F17/229C01F17/235B82Y40/00B82Y30/00
CPCC01G49/06B82Y40/00B82Y30/00C01P2004/84C01P2004/03C01P2006/42C01P2004/64C01P2004/62
Inventor 陈宛莎
Owner 陈宛莎
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