Effect of Adsorption Characteristics of Rhodamine 6G Dye Solution in Fe₃O₄ Magnetic Nanoparticles on Fluorescence Quantum Yield

Abstract

In this work, the use of Fe 3 O 4 magnetic nanoparticles in the adsorption of rhodamine 6G solution was evaluated via absorbance and fluorescence spectroscopy using the UV-Vis spectrometer. The adsorption mechanism of rhodamine 6G on Fe 3 O 4 was determined with respect to the adsorbent dosage (2.5–10 mg/L) and treatment time (0–150 min). The experimental data revealed that the fluorescence quantum yield of rhodamine 6G was inversely proportional to the percentage of dye removal. The highest efficiency of dye removal was obtained at 10 mg/L Fe 3 O 4 , and the adsorption capacity was about 150 mg/g, together with a reduced treatment time of 30 min, owing to active adsorption of Fe 3 O 4 . We believe that our study makes a significant contribution to the literature because Fe 3 O 4 magnetic nanoparticles were found to be able to quench rhodamine 6G dye molecules, which will aid in eliminating toxic and hazardous pollutants from dye wastewater, which are otherwise detrimental to the environment and human health.