Presentation Information
[10p-N303-7]Enhanced Organic Dye Degradation via Photocatalysis and Piezocatalysis Using Sintered NiFe2O4 Nanoparticles
〇(M1)Xinyu Jin1, Tomoyuki Kurioka1,2, Chun-Yi Chen1,2, Masato Sone1, Yung-Jung Hsu1,2,3, Satoshi Okamoto1,2, Tso-Fu Mark Chang1,3 (1.Science Tokyo, 2.Sumitomo Chemical, 3.NYCU)
Keywords:
Photocatalysis,Piezocatalysis,Persistent organic pollutants (POPs)
Persistent organic pollutants (POPs) like Malachite Green (MG) are hazardous due to their toxicity and resistance to conventional treatment. As major pollutants from textile and aquaculture industries, they require efficient removal strategies. Photocatalysis and piezocatalysis, as advanced oxidation processes (AOPs), offer effective degradation via reactive oxygen species (ROS) generation.
In this work, NiFe2O4 (NFO) nanoparticles were synthesized and systematically sintered at various temperatures to enhance catalytic performance1. As shown in Figure (a), under visible light and ultrasonic agitation, NFO generates separated charge carriers through photoexcitation and piezoelectric effects, leading to ROS formation (•OH, •O2-) for dye degradation2.
Figure (b) shows that NFO sintered at 700 °C exhibited the highest photocatalytic activity due to improved crystallinity from thermal treatment. Figure (c) highlights the synergistic effect under combined light and ultrasound, surpassing individual effects. These findings confirm that sintering significantly enhances the degradation efficiency, making NFO a promising electromechanical catalyst for sustainable wastewater treatment.
In this work, NiFe2O4 (NFO) nanoparticles were synthesized and systematically sintered at various temperatures to enhance catalytic performance1. As shown in Figure (a), under visible light and ultrasonic agitation, NFO generates separated charge carriers through photoexcitation and piezoelectric effects, leading to ROS formation (•OH, •O2-) for dye degradation2.
Figure (b) shows that NFO sintered at 700 °C exhibited the highest photocatalytic activity due to improved crystallinity from thermal treatment. Figure (c) highlights the synergistic effect under combined light and ultrasound, surpassing individual effects. These findings confirm that sintering significantly enhances the degradation efficiency, making NFO a promising electromechanical catalyst for sustainable wastewater treatment.