A kind of preparation method of magnetic carboxymethyl chitosan adsorbent
The technology of carboxymethyl chitosan and adsorbent is applied in the field of preparation of magnetic carboxymethyl chitosan adsorbent, which can solve the problems of complex technical equipment and high processing cost, and achieve good adsorption effect, stable adsorption performance and high adsorption capacity. multi-site effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0038] The method for preparing the magnetic carboxymethyl chitosan adsorbent, including the following steps:
[0039] (1) Fe 3 O 4 @Sio 2 Preparation of magnetic nanoparticles
[0040] 1.1 Take 700 ml oxygen no oxygen-free ion water in 1000ml beaker;
[0041] 1.2 weigh 5.7885g Fe 3 O 4 Magnetic particles (0.025 mol) are dispersed in 1.1 water (Note: An oxygen-free deionized water);
[0042] 1.3 weighing 28.42g NA 2 SiO 3 · 9h 2 O, formulated NA for 1 mol / L in the molar concentration 2 SiO 3 · 9h 2 O Solution (Note: Using anaerobic deionized water);
[0043] 1.4 Take the solution in 100ml 1.3 (0.1 mol Na) 2 SiO 3 · 9h 2 O) (Fe 3 O 4 SiO 2 The molar ratio was 1: 4, dripped to 1.2 beaker, while stirring while maintaining the solution pH = 6.0;
[0044] 1.5 Take 16.66 ml of concentrated hydrochloric acid in a 100 ml volumetric flask to prepare an HCl solution having a molecular concentration of 2 mol / L;
[0045] 1.6 Pour the solution after 1.4 measuring, poured into the three-nec...
Embodiment 2
[0054] The difference between the preparation method of this example is: Step (1) in Fe 3 O 4 The magnetic particles are 0.2mol, step (2) Fe 3 O 4 @Sio 2 It was 0.35 g, the mass of glutaraldehyde was 0.8 g, and the mass of cyclohexane was 90 g, and the mass of SPAN-80 was 2 g, and the other conditions were the same as in Example 1.
Embodiment 3
[0056] The difference between the preparation method of this example is: Step (1) in Fe 3 O 4 The magnetic particles are 0.3 mol, step (2) Fe 3 O 4 @Sio 2 0.5 g, the mass of glutaraldehyde was 1.6 g, the mass of cyclohexane was 102 g, and the mass of SPAN-80 was 2.2 g, and the other conditions were the same as in Example 1.
[0057] Figure 1 to 4 For the magnetic carboxymethyl chitosania, the magnetic carboxymethyl chitcan adsorbent prepared in Example 1, the magnetic carboxymethyl chitosan adsorbent microspheres prepared in the present embodiment were about 508.26 μm, according to SEM detection. The results show that the magnetic microspheres are very ideal. The geometry of a single microsphere is very close to the spherical shape, and there are many layered pleats on the surface. The width of the pleats is about 0.79 μm, the pleats are huge, greatly increased magnetic microspheres. Adsorption capacity at adsorption.
[0058] Figure 5 In the infrared spectrum of the magnetic ca...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
| adsorption capacity | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More