The current work focus is on utilizing sunlight to catalyze the destruction of carbon-based (organic) pollutants. To increase the morphological area and improve the proficiency of the photocatalytic technique, sodium alginate was used as a polymeric tool and arranged as drop practice. SiO2 nanoparticles were doped into sodium alginate droplets. The developed SiO2 nanomaterials were able to spread the wavelength diversity throughout a significant wavelength constituency. In the photocatalytic technique employing the lot photoreactor, MB was used as a sample of carbon-based pollutants. The sunlight catalytic procedure was implemented from UV-Vis or photo light droplets. The analysis of the synthesized droplets was tested using devices X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) analysis. Correspondingly, the influences of different concentrations of SiO2 nanosolution (5 ml, 10 ml, 15 ml, and 20 ml) on the photocatalytic effectiveness of the deposited nanoparticles were studied. The output result revealed that sodium alginate beads doped with SiO2 at 20 ml were able to reduce (degrade) 98.9% underneath UV-visible light. However, in the case of using other concentrations, SiO2 at 5, 10, and 15 ml were able to degrade 50%, 56.7%, and 67.9% under sunlight, respectively, after 2 h.