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(A) CMC@AgNPs at (a) 30s, (b) 60s, (c) 90s, (d) 120s, (e) 150s, (f) 180s, (g) 210s and (h) 240s. (B) SA@AgNPs at (a) 30s, (b) 60s, (c) 90s, (d) 120s, (e) 150s, (f) 180s, (g) 210s and (h) 240s. Arrow indicates direction of spectral changes.
