Preparation method and application of carbon dot modified silicon dioxide nanoparticle-based hydrogel composite material
A technology of silica and nanoparticles, applied in the direction of gel preparation, chemical instruments and methods, alkali metal compounds, etc., can solve the problems of urgent development and other applications, and achieve rapid adsorption and detection, good fluorescence performance, and good fluorescence stability and environmental effects
Pending Publication Date: 2021-10-19
武汉软件工程职业学院
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Abstract
The invention discloses a preparation method and application of a carbon dot modified silicon dioxide nanoparticle-based hydrogel composite material. The preparation method comprises the following steps: 1) performing a one-step hydrothermal method on sodium alginate, ethylenediamine and silicon dioxide nanoparticles to obtain carbon dot modified silicon dioxide nanoparticles, and performing a dehydration reaction on the nanoparticles and hydroxyethyl methylacrylate to obtain cross-linkable carbon dot modified silicon dioxide nanoparticles, wherein the particle size of the silicon dioxide nanoparticles is 50-200 nm, and the water suspension of the silicon dioxide nanoparticles can emit blue fluorescence under the irradiation of ultraviolet light; and 2) taking the carbon dot modified silicon dioxide particles as a cross-linking agent, blending the carbon dot modified silicon dioxide particles with acrylic acid and hydroxyethyl methylacrylate monomers, and obtaining a hydrogel composite material through a one-step photopolymerization method. According to the invention, the prepared hydrogel composite material can be applied to adsorption and detection of copper ions (Cu<2+>) in water, and is simple to prepare, good in mechanical stability, high in ion selectivity, non-toxic and environment-friendly.
Application Domain
Other chemical processesWater contaminants +4
Technology Topic
Silica nanoparticlesSilicon dioxide nanoparticles +18
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PUM
Property | Measurement | Unit |
Tensile strength | 13.2 | mPa |
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