Synthesis of a magnetically removable photocatalyst based on Strontium doped lanthanum manganite
Abstract
Water contamination by dyes is a serious problem due to its harmful effects on health and the environment. In response to this problem, numerous methods have been developed for its remediation, being photocatalysis one of the most efficient. In this work, the photocatalytic efficiency of lanthanum manganite (La0.7Sr0.3MnO3) synthesized by high energy milling assisted with treatment for the removal of crystal violet (CV), as a pollutant, in aqueous medium was analysed. The results obtained by X-ray diffraction confirmed the formation of a pure manganite phase with rhombohedral crystal structure (R-3c). The photocatalytic efficiency was evaluated under a visible light spectrum using CV as a reference, revealing a high degradation efficiency close to 80 % in a time of 150 min with a degradation kinetics of 0.0238min-1 The magnetic behaviour of La0.7Sr0.3MnO3, determined by vibrating sample magnetometry, revealed a ferromagnetic order with a saturation magnetization of 67 emu g-1, making this material a magnetically recoverable photocatalyst.
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References
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Copyright (c) 2023 Cristhian Antonio Taboada Moreno, Luis Gerardo Betancourt, Omar Rosales González, Claudia Alicia Cortés Escobedo , Ana María Bolarín Miró, Félix Sánchez De Jesús
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