.An efficient and readily recyclable 3D artificial oxidase (NF@MnO2) for the colorimetric detection of ascorbic acid was well constructed with nickel foam as the substrate.
A novel and sensitive method for ascorbic acid (AA) determination utilizing Ag+–3,3′,5,5′-tetramethylbenzidine (TMB) as a colorimetric probe was proposed.
For the first time, a bifunctional colorimetric biosensing platform has been developed, based on a polypyrrole coated fluconazole-functionalized polyoxometalate-based metal–organic framework with ultrahigh stability for the enhanced detection of H2O2 and ascorbic acid.