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. 2022 Feb 16;10:854045. doi: 10.3389/fchem.2022.854045

FIGURE 2.

FIGURE 2

(A) Conventional types of polyoxometalates (M = Mo, W, V, Nb; X = heteroatom). (B) Scheme of degradation of phenolic contaminants by laccase-mimicking POMs. (C) Scheme of a batch reactor with POV hybrid as a quasi-homogeneous catalyst for degradation of emergent water contaminants. Scheme of laccase-like catalytic activity of POV hybrids for oxidating p-phenylenediamine (D) and hydroquinone (E).