Dual-mode sensors based on double enzyme-mimicking MnCu nanoflowers as fluorescence probe for the detection of organophosphorus pesticides and 2,4-dichlorophenol

-MnCu NFs according to morphological and structural perspectives using SEM and in situ Raman spectroscopy. Based on OXD-like activity, ratiometric fluorescence and colorimetric dual-mode sensor was constructed for the detection of OPs. Additionally a colorimetric fluorescence dual-mode sensor was proposed for the specific detection of 2,4-DP with the use of laccase-like activity of the material. Two sensors were constructed using a single type of nanoenzyme, leveraging their dual-enzyme activities for the detection of OPs and 2,4-DP, respectively. This approach expands the potential applications of nanoenzymes and provides versatile scenarios for their multifunctional use.