Fig. 4From: Laccase-mimicking Mn–Cu hybrid nanoflowers for paper-based visual detection of phenolic neurotransmitters and rapid degradation of dyesa Comparison of catalytic activities of H–Mn–Cu NFs and free laccase to oxidize five different phenolic substrates (phenol, bisphenol A, hydroquinone, catechol, and 2-naphthol). Dose–response curves and linear calibration plots for determining b dopamine and c epinephrine by well plate-based assay using H–Mn–Cu NFs. Photographs show the real images of the assay with target concentrations of 0–0.55 mM. Error bars represent standard deviations obtained from four independent measurementsBack to article page