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Heterojunction nano material and preparation and application thereof

A nanomaterial and heterojunction technology, applied in nanotechnology, nanotechnology, nanomedicine, etc., can solve problems that are rarely reported, and achieve the effects of low toxicity, wide application prospects, and good cancer treatment effect

Pending Publication Date: 2021-12-07
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such defect engineering has mainly focused on the field of catalysts, and its potential in biomedicine has been poorly reported.

Method used

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  • Heterojunction nano material and preparation and application thereof
  • Heterojunction nano material and preparation and application thereof
  • Heterojunction nano material and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] a CoFe 2 o 4 - The preparation of yCoO heterojunction nanomaterials, the steps are as follows:

[0033] 1) Co(NO 3 ) 2 ·6H 2 O(0.003mol), Fe(NO 3 ) 3 9H 2 Solution A was prepared by dissolving O (0.001 mol) in 30 mL of deionized water.

[0034] 2) Na 2 CO 3 (0.002mol), NaOH (0.35g) were dissolved in 30mL of deionized water to obtain solution B.

[0035] 3) Slowly add the solution B prepared in step 2) to the solution A prepared in step 1), keep the pH of the solution = 8, mechanically stir the reaction at 80° C. for 24 hours, and centrifuge at 8000 rpm to obtain CoFe-LDH nanosheets.

[0036] 4) Put the CoFe-LDH nanosheets prepared in step 3) into a tube furnace, and calcine them at 500°C for 2 hours in a nitrogen atmosphere to obtain heterojunction nanomaterials, dissolve them in an acidic solution, and perform inductively coupled plasma Emission spectrometer measures the content of Co element and Fe element, as table 1, obtains CoFe 2 o 4The ratio to CoO i...

Embodiment 2

[0041] a CoFe 2 o 4 - The preparation of yCoO heterojunction nanomaterials, the steps are as follows:

[0042] 1) Co(NO 3 ) 2 ·6H 2 O(0.002mol), Fe(NO 3 ) 3 9H 2 Solution A was prepared by dissolving O (0.001 mol) in 30 mL of deionized water.

[0043] 2) Na 2 CO 3 (0.002mol), NaOH (0.35g) were dissolved in 30mL of deionized water to obtain solution B.

[0044] 3) Slowly add the solution B prepared in step 2) to the solution A prepared in step 1), keep the pH of the solution = 8, mechanically stir the reaction at 80° C. for 12 hours, and centrifuge at 8000 rpm to obtain CoFe-LDH nanosheets.

[0045] 4) Put the CoFe-LDH nanosheets prepared in step 3) into a tube furnace, and calcine them at 500°C for 2 hours in a nitrogen atmosphere to obtain heterojunction nanomaterials, dissolve them in an acidic solution, and perform inductively coupled plasma Emission spectrometer measures the content of Co element and Fe element, as table 1, obtains CoFe 2 o 4 The ratio to CoO ...

Embodiment 3

[0048] a CoFe 2 o 4 - The preparation of yCoO heterojunction nanomaterials, the steps are as follows:

[0049] 1) Co(NO 3 ) 2 ·6H 2 O(0.003mol), Fe(NO 3 ) 3 9H 2 Solution A was prepared by dissolving O (0.001 mol) in 30 mL of deionized water.

[0050] 2) Na 2 CO 3 (0.002mol), NaOH (0.35g) were dissolved in 30mL of deionized water to obtain solution B.

[0051] 3) Slowly add the solution B prepared in step 2) to the solution A prepared in step 1), keep the pH of the solution = 8, mechanically stir the reaction at 80° C. for 12 hours, and centrifuge at 8000 rpm to obtain CoFe-LDH nanosheets.

[0052] 4) Put the CoFe-LDH nanosheets prepared in step 3) into a tube furnace, and calcine them at 400°C for 2 hours in a nitrogen atmosphere to obtain heterojunction nanomaterials, dissolve them in an acidic solution, and perform inductively coupled plasma The content of Co element and Fe element is measured by emission spectrometer to obtain CoFe 2 o 4 The ratio to CoO is ab...

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Abstract

The invention discloses a heterojunction nano material and preparation and application thereof. The heterojunction nanomaterial is a CoFe2O4-yCoO heterojunction nanomaterial, y is 1-5, the size of the heterojunction nanomaterial is 100-300 nm, the thickness of the heterojunction nanomaterial is 2-30 nm, and the specific surface area of the heterojunction nanomaterial is 30-50 m < 2 > / g. The reagent can effectively convert light energy into heat energy under the irradiation of near-infrared light, so that cancer cells are killed while near-infrared and photoacoustic imaging and magnetic resonance imaging are realized, and the effect of photothermal therapy is achieved. The material is mild in reaction condition, easy to operate and wide in application prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation of anticancer drugs. More specifically, it relates to a heterojunction nanomaterial and its preparation and application. Background technique [0002] Cancer is one of the main killers of human life and health, and is currently one of the diseases with the highest fatality rate in the world, seriously threatening human health and survival. Traditional tumor treatment methods such as surgical resection, chemotherapy and radiotherapy have certain limitations, and the treatment effect is often not ideal. As a new treatment method, photothermal therapy based on near-infrared has attracted widespread attention due to its minimally invasive, high-efficiency, low adverse reactions, and inhibition of tumor metastasis. At present, there are various materials used in photothermal therapy research. Such as carbon-based reagents (Advanced Functional Materials 2015, 25(3), 384-392.), organic molecules (S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04C01G51/00B82Y30/00B82Y5/00A61K41/00A61K49/00A61K49/06A61K49/22A61P35/00
CPCC01G51/04C01G51/00B82Y30/00A61K41/0052A61K49/0002A61K49/06A61K49/22A61P35/00C01P2006/12C01P2004/80C01P2002/72C01P2004/04
Inventor 关山月王莉杨雪婷周树云
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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