Fig. 13From: Ag+ colorimetric sensor based on graphene oxide/nano-platinum compositeOptimization of TMB concentration during color development. Reaction condition: GO/PtNPs 0.047 μg/mL, H2O2 0.02 M, TMB 0.001, 0.02, 0.1, 0.3, 0.5, 1.0, 1.5 mM, pH = 5, t = 5 min, λ = 652 nmBack to article page