Plasmonic Sensing of Aqueous-Divalent Metal Ions by Biogenic Gold Nanoparticles

Figure 2

(a, b) TEM micrographs of AuNPs obtained with 0.4 mL of Camellia sinensis extract. Inset in (a): HRTEM micrograph of biogenic AuNPs obtained with 0.4 mL of Camellia sinensis extract. Inset in (b): SAED pattern of biogenic AuNPs collected after 24 h of reaction using 0.4 mL of Camellia sinensis extract.

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