Preparation method of porous polydopamine nanoparticles with controllable morphology
A polydopamine and nanoparticle technology, which is applied in the field of preparation of porous polydopamine nanoparticles, can solve the problems of high price, complex synthesis route, poor dispersibility and the like, and achieves the effects of high reaction efficiency and simple and efficient method.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0027] This example relates to the preparation of a porous polydopamine nanoparticle, and the proportioning relationship of each raw material is shown in Table 1: the specific preparation includes the following steps:
[0028] Dissolve 0.9g P123, 0.1g F127 and 0.25g dopamine hydrochloride in 20mL deionized water, heat to 90°C, form a homogeneous system after magnetic stirring for half an hour, add 0.4mL ammonia water to it, and dopamine polymerizes for 24 hours Finally, the solution after the reaction was centrifuged at 12000rpm, and washed three times with deionized water to obtain polydopamine nanoparticles, which were denoted as PDA-1. It can be seen from the scanning electron microscope and transmission electron microscope that the particle diameter of PDA-1 is about 200nm, showing Disk-shaped morphology, specific surface area is 34.7m 2 / g.
Embodiment 2
[0030] This example relates to the preparation of a porous polydopamine nanoparticle, and the proportioning relationship of each raw material is shown in Table 1: the specific preparation includes the following steps:
[0031] Dissolve 0.8g of P123, 0.2g of F127 and 0.25g of dopamine hydrochloride in 20mL of deionized water, heat to 90°C, form a homogeneous system after magnetic stirring for half an hour, add 0.4mL of ammonia water to it, and polymerize dopamine for 24 hours Finally, the solution after the reaction was centrifuged at 12000rpm, and washed three times with deionized water to obtain the porous polydopamine nanoparticles, denoted as PDA-2, the scanning electron microscope and transmission electron microscope diagrams of the porous polydopamine nanoparticles of the present embodiment are as follows figure 1 As shown, it can be seen that PDA-2 presents a porous spherical shape, the pore size is about 25nm, and the specific surface area is 60.4m 2 / g.
Embodiment 3
[0033] This example relates to the preparation of a porous polydopamine nanoparticle, and the proportioning relationship of each raw material is shown in Table 1: the specific preparation includes the following steps:
[0034] Dissolve 0.6g P123, 0.4g F127 and 0.25g dopamine hydrochloride in 20mL deionized water, heat to 90°C, form a homogeneous system after magnetic stirring for half an hour, add 0.4mL ammonia water to it, and dopamine polymerizes for 24 hours Finally, the solution after the reaction is centrifuged at 12000rpm, and washed three times with deionized water to obtain the porous polydopamine nanoparticles, denoted as PDA-3, the scanning electron microscope and transmission electron microscope diagrams of the porous polydopamine nanoparticles of the present embodiment are as follows figure 2 As shown, it can be seen that PDA-3 has a ravine-like morphology with a specific surface area of 83.1m 2 / g.
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More