Fig. 14From: Ag+ colorimetric sensor based on graphene oxide/nano-platinum compositeEffect of different metal ions on graphene oxide/nano-platinum peroxidase activity. Reaction condition: GO/PtNPs 0.047 μg/mL, H2O2 0.02 M, TMB 0.02 Mm, pH = 5, t = 5 min, λ = 652 nmBack to article page