Abstract
Octahedral cuprous oxide nanoparticles decorated with silver particles for hydrogen peroxide (H2O2) detecting applications were studied in detail. The silver particles are applied as a catalyst to enhance sensing ability. Different technologies including ultraviolet-assisted, temperature-assisted, and vibration-assisted methods were used. Among these technologies, the electrode synthesized with ultraviolet-assisted one can achieve the largest quantity of silver particles with the widest distribution. As a result, the silver particles promote sensitivity and detection limit up to 50.2 μAmM−1cm−2 and 0.1 μM (S/N = 3) with a wider linear range (0.5–3.0 mM H2O2), respectively. Compared to the published researches, the sensitivity has enhanced almost 200%.
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