Synthesis and mechanical activation of high-entropy perovskite oxides reveal enhanced photocatalytic reduction of Cr(VI) and sorption of dye.
High-entropy single-phase oxides with the perovskite structure Ca(TiSnNbTaM)O (M = Fe, Zr) were synthesized for the first time by a simple one-step ceramic method and characterized by X-ray diffraction analysis. The powders were subjected to mechanical activation, which resulted in a partial phase transition from an orthorhombic phase to a tetragonal one. Both compositions demonstrated the ability to reduce Cr(VI) when illuminated with uV light and high sorption activity with respect to the methylene blue dye.
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Estemirova et al. (2025) studied this question.
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