Fig. 6From: Highly Efficient Catalysis of Azo Dyes Using Recyclable Silver Nanoparticles Immobilized on Tannic Acid-Grafted Eggshell MembraneCatalytically recyclable degradation of azo dyes as a function of time (a, c) and the conversion ratios of azo dyes (b, d) in several successive cycles of reaction (a and b refer to Congo red, c and d refer to methyl orange)Back to article page