| abstract |
The invention relates to an aramid nanofiber composite material, a preparation method thereof and its application in photocatalytic degradation of rhodamine b. The preparation method of the aramid nanofiber composite material of the present invention is simple to operate, uses less materials, obtains a uniform appearance, and uniformly disperses nano metal particles in the porous structure of the aramid fiber. Due to the conjugated system of aramid nanofibers and Ag composites, the photo-excited electrons of silver nanoparticles can be effectively transferred to oxygen through aramid nanofibers, which hinders the recombination of electron-hole pairs, and the aramid nanofibers are combined with the aramid nanofibers. The Ag composite has a high surface area to volume ratio, which leads to an increase in the number of active sites for adsorption of rhodamine b dye in solution. Therefore, the silver nanoparticles immobilized on the aramid nanofibers have good catalytic activity, and the catalytic (under sunlight) efficiency of rhodamine b can be as high as 98.5%, and the catalytic efficiency of the material after being reused five times is also 90%. %above. |