| abstract |
The invention relates to a preparation method of a multifunctional fluorescent film. The preparation method of the multifunctional fluorescent film comprises the following steps: firstly, extracting quercetin: will be rich inThe raw material of the quercetin is subjected to multi-stage separation and purification. (II) preparing fluorescent nano crystals: dissolving the extracted quercetin in a mixed solvent system. (III) preparing a fluorescent film: mixing and stirring the fluorescent nano-crystal solution and the PVA solution, spreading a film by a tape casting method, and drying. The preparation method of the multifunctional fluorescent film is simple and green, and can detect trace Al 3+ Ions can capture free radicals, have an antioxidant function, and also have good antibacterial activity on escherichia coli, bacillus subtilis and the like. |