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The images of scanned cotton samples: (a) untreated, (b) functionalized with zinc acetate dihydrate, (c) functionalized with wood ash extract, (d) functionalized with pomegranate peel extract, (e) functionalized with pomegranate peel and zinc acetate dihydrate, (f) functionalized by Method 1 synthesis, (g) functionalized by Method 2 synthesis, (h) functionalized by Method 3 synthesis, (i) functionalized by Method 4 synthesis.
