Table 1.

Assignment of IR bands for CE extract and as-synthesized PtNPs.

S.N.	CE Extract Vibrational Mode (cm−1)	PtNPs CE Vibrational Mode (cm−1)	Assignment
1	3260	3283	OH- Stretching
2	2932	2920, 2850	C-H Stretching
4	1715	1708	C=O Stretching
5	1609	1620	COO- Stretching
6	1515	1505	N-O Stretching
7	1440 1328	1443 1338	C-N Stretching of Aromatic Amine
8	1174	1170	S=O Stretching
9	1052	1057	C-O-C Stretching
10	837	835	C-H Bending
11	769	759	C-H Bending