Fig. 4From: Highly Efficient Catalysis of Azo Dyes Using Recyclable Silver Nanoparticles Immobilized on Tannic Acid-Grafted Eggshell MembraneThe XRD pattern (a) and the TGA curve (b) of natural ESM (green line), Tan-ESM (blue line), and AgNPs@Tan-ESM composites (red line)Back to article page