Abstract
A facile, one-pot and environmental benign method exploiting Piper betle biomass as a reducing and stabilizing agent was proposed for the preparation of silver (Ag) nanoparticles. The Ag nanoparticles prepared from dried Piper betle leaves extract exhibited unique spherical configuration and face-centered-cubic structure with preferred (111) orientation. The fabricated Ag/GCE sensor exhibited an exceptional electrocatalytic activity toward NO2− oxidation with a quick response time, high sensitivity and lower detection limit of 10s, 1642.27μAmM−1cm−2 and 0.046μM, respectively. Furthermore, the constructed sensor exhibited long-term stability and excellent anti-interference properties, paving new dimensions for the utilization of bio-mediated nanocatalysts in electrochemical sensors.
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