Colorimetric detection methods have been attracted and preferred for analytes assessment. Although simple and highly efficient colorimetric strategies based on nanozymes have been developed, there remain inherent problems of intrinsic color interference for accurate analysis and erratic activity to lose controllable, recyclable, and sensitive efficacies. Herein, we have prepared a novel composite aerogel named PACO that is rationally assembled by the poly (vinyl alcohol) aerogel (PVA aerogel) and copper oxide nanoparticles (CuO NPs) to address these challenges. PACO has been proved to exhibit ...
