Method for preparing magnetic silica composite particles
A technology of silicon dioxide and composite particles, applied in the direction of magnetic materials, magnetic objects, inorganic materials, etc., can solve the problems of complicated regulation process, and achieve the effect of convenient and controllable size, simple and direct preparation process, and uniform particle size.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0023] Embodiment 1: Preparation of hydrophobic magnetic nanoparticles (1)
[0024] Add 0.046mol of Fe to 100mL of water that has been passed through nitrogen 3+ and 0.023mol of Fe 2+ A mixed solution was obtained. Get 400mL of water in a 1L reaction flask and pass through nitrogen to remove oxygen, add 20mL of concentrated ammonia water and 10.8g of oleic acid with a concentration of 25% in mass percentage successively, pour the above-mentioned iron salt mixed solution into it rapidly under vigorous stirring, React at 50°C for 1h. After the reaction is completed, adjust the reaction solution to acidity with hydrochloric acid, separate the black solid from the reaction solution with a 0.1T permanent magnet, and wash the obtained solid with high-purity water for 3 to 5 times to obtain the hydrophobic Fe 3 o 4 Nanoparticles.
[0025] Will Fe 3+ and Fe 2+ respectively replaced by Co 3+ and Co 2+ , the hydrophobic Co can be obtained 3 o 4 Nanoparticles.
Embodiment 2
[0026] Embodiment 2: Preparation of hydrophobic magnetic nanoparticles (2)
[0027] Add 0.046mol of Fe to 100mL of water that has been passed through nitrogen 3+ and 0.023mol of Fe 2+ A mixed solution was obtained. Get 400mL of water in a 1L round-bottomed flask, pass nitrogen to remove oxygen, add 20mL of concentrated ammonia water and 5.52g of myristic acid with a concentration of 25% in mass percentage successively, pour the above-mentioned iron salt mixed solution into it rapidly under vigorous stirring, React at 80° C. for 1 h. Oxygen was then introduced into the reaction solution for 2 h. After the reaction is completed, adjust the reaction solution to acidity with hydrochloric acid, separate the red solid from the reaction solution with a 0.1T permanent magnet, and wash the obtained solid with high-purity water for 3 to 5 times to obtain hydrophobic γ-Fe 2 o 3 Nanoparticles.
Embodiment 3
[0028] Embodiment 3: Preparation of hydrophobic magnetic nanoparticles (3)
[0029] Add 0.046mol of Fe to 100mL of water that has been passed through nitrogen 3+ and 0.023mol Co 2+ to obtain a mixed solution. Take 400mL of water and pass nitrogen to remove oxygen in a 1L reaction flask, add 20mL of concentrated ammonia water with a mass percentage concentration of 25% and 1.33g of 10-undecylenic acid in sequence, and quickly pour the above mixed solution into it under vigorous stirring , reacted at 90°C for 1h. After the reaction is completed, adjust the reaction solution to acidity with hydrochloric acid, separate the black solid from the reaction solution with a 0.1T permanent magnet, and wash the obtained solid with high-purity water for 3 to 5 times to obtain CoFe 2 o 4 Hydrophobic nanoparticles.
[0030] Will Co 2+ replace with Mn 2+ , the hydrophobic MnFe can be obtained 2 o 4 Nanoparticles.
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
particle size | 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