Fig. 5From: Highly Efficient Catalysis of Azo Dyes Using Recyclable Silver Nanoparticles Immobilized on Tannic Acid-Grafted Eggshell MembraneThe time-dependent UV-vis absorption spectra of azo dyes degraded by AgNPs@Tan-ESM composites (a, c) and the kinetic curve (b, d) in the process of reaction (a and b refer to Congo red, c and d refer to methyl orange)Back to article page