Gold nanozymes for efficient degradation of organic dye pollutants: outperforming natural enzymes

peroxidase-like activity, unlike the natural enzyme (horseradish peroxidase - HRP), which displayed weak degradative capabilities. On the other hand, Pd and PtNZs experience the internal competitive catalase-like reaction, strongly limiting their dye degradation performances. The mechanism underlying AuNZ's ability to degrade the synthetic dyes was investigated, revealing the preferential reactivity with the aromatic structures of the molecules. We also developed a proof-of-concept AuNZ-based dye-degrading filter system, showing excellent dye removal capability and good recyclability, even in real environmental samples.