A facile strategy for synthesis of porous Cu2O nanospheres and application as nanozymes in colorimetric biosensing

Abstract

Using NaClO as an oxidant, urea was oxidized as carbon source to prepare the Cu–Mg-precursors, which further reacted with sodium ascorbate to form porous Cu₂O NPs. A high sensitivity and excellent selectivity for colorimetric detection of glucose and l-cysteine has been developed based on the nanozyme.