Presenter(s)
Leo Doan, Kahun Vue, and Natalie Chouinard
Abstract
Iron oxide nanoparticles (NPs) were prepared and evaluated for their photocatalytic activity in degrading methylene blue (MB). MB is widely used in different industries and is difficult to remove from waste due to the benzene groups, so the removal of MB becomes an emergency problem. Magnetic nanoparticles (MNPs), Fe3O4, were successfully synthesized using a co-precipitation method between FeCl3.6H2O and FeCl2.4H2O. The point of zero charge (PZC) was determined to be approximately at pH 6.37. The NPs were examined under UV light irradiation, and their catalytic activity was monitored using UV-Vis spectroscopy. The λmax of MB was determined to be approximately 664.6 nm. The dye degraded more rapidly in the presence of MNPs, confirming the catalytic effect of MNPs. The control reached only 26.2% degradation with the rate of 0.00550 min-1, while Fe3O4 NPs improved this to 55.2% degradation at pH 7 with the rate of 0.00733 min-1 and 66.1% degradation at pH 13 with the rate of 0.0140 min-1. Overall, Fe3O4 MNPs can significantly increase the rate of dye degradation.
College
College of Science & Engineering
Department
Chemistry
Campus
Winona
First Advisor/Mentor
Jennifer Zemke
Location
Kryzsko Great River Ballroom, Winona, Minnesota; United States
Start Date
4-23-2026 10:00 AM
End Date
4-23-2026 11:00 AM
Presentation Type
Poster Session
Format of Presentation or Performance
In-Person
Session
1b=10am-11am
Poster Number
12
Co-precipitation Synthesis of Magnetic Nanoparticles (MNPs) Fe3O4 and Their Photocatalytic Performance
Kryzsko Great River Ballroom, Winona, Minnesota; United States
Iron oxide nanoparticles (NPs) were prepared and evaluated for their photocatalytic activity in degrading methylene blue (MB). MB is widely used in different industries and is difficult to remove from waste due to the benzene groups, so the removal of MB becomes an emergency problem. Magnetic nanoparticles (MNPs), Fe3O4, were successfully synthesized using a co-precipitation method between FeCl3.6H2O and FeCl2.4H2O. The point of zero charge (PZC) was determined to be approximately at pH 6.37. The NPs were examined under UV light irradiation, and their catalytic activity was monitored using UV-Vis spectroscopy. The λmax of MB was determined to be approximately 664.6 nm. The dye degraded more rapidly in the presence of MNPs, confirming the catalytic effect of MNPs. The control reached only 26.2% degradation with the rate of 0.00550 min-1, while Fe3O4 NPs improved this to 55.2% degradation at pH 7 with the rate of 0.00733 min-1 and 66.1% degradation at pH 13 with the rate of 0.0140 min-1. Overall, Fe3O4 MNPs can significantly increase the rate of dye degradation.
Comments
Doan, Leo; Vue, Kahun N; Chouinard, Natalie R