Synthesis of Gold Nanoparticles Using Tannin-Rich Extract and Coating onto Cotton Textiles for Catalytic Degradation of Congo Red

Table 1

Color values and photographic images of AuNP-coated cotton fabrics.

Sample	Color value				Fabric image
				K/S
Untreated cotton	95.88	7.33	–27.23	0.87
Cot-01	79.27	11.37	–17.85	0.91
Cot-10	53.91	14.70	–11.80	2.21