Multioxide Nanomaterials Zn, Cu, and Mn: Combining Nanozyme and Photocatalyst Functions for Environmental Applications.

The study analyses nanotechnology advances in the synthesis of catalytic nanozymes that mimic enzymatic properties but are also inorganic nanomaterials. It compares Zn-Mn-Cu multioxide and Mn-Cu multioxide nanomaterials in terms of the role of nanozymes and photocatalysts in the decomposition of trypan blue dye. The study showed that Zn-Mn-Cu multioxide nanoxide has activity as a peroxidase-like nanozyme (100 mUnit/mL) and achieves 75% dye degradation as a photocatalyst under UV light. At the same time, Mn-Cu multioxide shows enhanced photocatalysis under visible light (45% degradation), consistent with its biocatalytic-like hydrolysis mechanism. In addition, both materials showed biocatalytic-like activity in the degradation of trypan blue dye (25%), without an additional light source. Further investigation of these dual nanozyme activities may reveal novel solutions for environmental photocatalysis.