Abstract

Darwin Fetalbero Reyes

DOI : http://dx.doi.org/10.13005/ojc/360407

The application of noble metal nanoparticles such as silver (AgNPs) in sensing small molecules has attracted many researchers worldwide. In this present investigation, AgNPs were synthesized via a one-pot and green strategy of using alkaline sucrose solution as the reducing agent. The AgNPs were characterized by UV-Vis spectroscopy and dynamic light scattering techniques. The AgNPs were confirmed through its surface plasmon band and had a narrow size distribution and good colloidal stability. The AgNPs were then applied as sensor probes in the visual detection of hydrogen peroxide. The sensing mechanism is based on the reduction-oxidation reactions that led to the observed color changes. The detection limit was found to be 1 x 10^-3 M as monitored through visual observation and image analysis. The study showed a great promise on the potential of AgNPs in the detection of small molecule targets for environmental and health sensor applications.

Green Synthesis; Hydrogen Peroxide; Sensor Probes; Silver Nanoparticles; Visual Detection

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