Investigating the oxidase-like activity of a Co–Fe Prussian blue analogue nanocube prepared in situ and its applications in the colorimetric detection of ascorbic acid, alkaline phosphatase, α-glucosidase, and ascorbic acid oxidase

A Co–Fe Prussian blue analogue nanocube (Co–Fe PBA NC) was prepared in situ . Based on the excellent oxidase-like activity of Co–Fe PBA NC, a colorimetric sensor is developed for the detection of ascorbic acid-related bioenzymes.