Hexagonal Lead Ferrite Magnetic Separation Catalysts: Synthesis, Optical Characterization, Ultrasonic Catalytic Activity and Performance Prediction

Abstract

Objective: This study was performed to explore a new method to synthesize PbFe 12 O 19 magnetic separation catalysts and analyze its ultrasonic catalytic activity for the degradation of rhodamine B (RhB) dye under ultrasonic vibration.Methods: A polyacrylamide gel method was developed to synthesize the hexagonal lead ferrite (PbFe 12 O 19 ) magnetic separation catalysts with different Fe/Pb molar ratios and sintering temperatures. Results:The phase structure and composition of PbFe 12 O 19 magnetic separation catalysts altered with the change in the Fe/Pb mole ratio and sintering temperature. The color properties, energy band values and degradation percentages of PbFe 12 O 19 magnetic separation catalysts for the degradation of RhB dye under ultrasonic vibration were linearly independent of Fe/Pb mole ratio and sintering temperature. The maximum degradation percentage of 78.99% for the PbFe 12 O 19 magnetic separation catalysts for the removal of RhB from wastewater was found at 2g/L of initial catalyst concentration, 50mg/L of initial dye concentration, and 180min of vibration time. Conclusion:The PbFe 12 O 19 magnetic separation catalysts exhibited high catalytic activity for the degradation of RhB dye under ultrasonic vibrations. Based on the experiment parameters, a neural network model was established to predict the effect of synthesis parameters on the degradation percentage of PbFe 12 O 19 catalysts. This work further confirmed that the neural network algorithm was available to predict the ultrasonic catalytic activity of semiconductor materials.

Spinel NiAl2O4 Based Catalysts: Past, Present and Future

“…Catalyst is a kind of substance that can degrade other difficult substances without changing its crystal structure, electronic structure, energy level structure and its own properties [1][2][3][4][5]. Depending on the nature of the catalyst itself, it can be used in adsorption, photocatalysis, piezoelectric catalysis, thermocatalysis, catalytic oxidation, biodegradation and other fields [6][7][8][9][10][11][12][13]. These catalysts may be single-component oxides or multicomponent compounds.…”