Magnetism/metal/fluorescence composite silicon dioxide nano particle and preparation method thereof
A technology of compounding silica and nanoparticles, which is applied in the field of nanomaterials, can solve problems such as the inability to eliminate the influence of magnetic particle absorption and reduce particle luminous efficiency, achieve good biocompatibility and chemical stability, improve sensitivity, and improve separation efficiency effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0020] Synthesis of Embodiment 1 Ferrite Nanoparticles: Fe 3 o 4 Preparation of nanoparticles
[0021] Weigh 1g of FeCl 3 ·6H 2 O and 0.37 g FeCl 2 4H 2 O was dissolved in 20ml of water through nitrogen and deoxygenation to obtain a mixed solution. Take 130ml of water in a 250mL round-bottomed flask to pass through nitrogen to remove oxygen, add 12.5ml of concentrated ammonia water with a concentration of 25-28% by mass, and quickly pour the above-mentioned iron salt mixed solution into it under vigorous stirring. Under reaction 1h. After the reaction is completed, use a 0.1T permanent magnet to separate the black solid from the reaction solution, and wash the obtained solid with high-purity water for 3 to 5 times to obtain Fe with a particle size of 6 to 10 nm. 3 o 4 Nanoparticles.
Embodiment 2
[0022] Synthesis of Example 2 Ferrite Nanoparticles: CoFe 2 o 4 Preparation of nanoparticles
[0023] Weigh 1g of FeCl 3 ·6H 2 O and 0.38 g CoCl 2 4H 2 O was dissolved in 20ml of water through nitrogen and deoxygenation to obtain a mixed solution. Take 130ml of water in a 250mL round-bottomed flask to pass through nitrogen to remove oxygen, add 12.5ml of concentrated ammonia water with a concentration of 25-28% by mass, and quickly pour the above mixed salt solution into it under vigorous stirring. Reaction 1h. After the reaction is completed, use a 0.1T permanent magnet to separate the black solid from the reaction solution, and wash the obtained solid with high-purity water for 3 to 5 times to obtain CoFe with a particle size of 3 to 13 nm. 2 o 4 Nanoparticles. CoCl can be 2 Change to MnCl 2 or ZnCl 2 get the corresponding MnFe 2 o 4 or ZnFe 2 o 4 Nanoparticles.
[0024] The magnetic core is silica coated by an inorganic silicon source and an organic silicon...
Embodiment 3
[0025] Example 3 Coating the magnetic core with silica by inorganic silicon source and organic silicon source: Inorganic silicon source coating
[0026] Weigh 0.6g Na 2 SiO 3 (SiO 2 Content is 45%) be dissolved in 50ml water, be 9.6 with the pH adjustment solution of cationic resin, add 0.5g above-mentioned synthetic Fe wherein 3 o 4 Nanoparticles. At room temperature, the reaction was carried out in a 250 mL round bottom flask with a stirring speed of 150 rpm for 12 h. After the reaction is completed, use a 0.1T permanent magnet to separate the black solid from the reaction solution, and wash the obtained solid with high-purity water for 3 to 5 times to obtain a silica-coated Fe with a particle size of 7 to 12 nm. 3 o 4 Nanoparticles.
[0027] Will Fe 3 o 4 Nanoparticles replaced by CoFe 2 o 4 , MnFe 2 o 4 or ZnFe 2 o 4 Nanoparticles Corresponding inorganic silicon source silica-coated magnetic nanoparticles can be obtained.
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com