Mucilage-capped silver nanoparticles for glucose electrochemical sensing and fuel cell applications

摘要: A simple, cost-effective and green mucilage-capped silver nanoparticles (Mucilage-AgNPs) modified glassy carbon electrode (GC) composite was constructed for efficient facile electrochemical oxidation of glucose the first time. Mucilage-AgNPs were synthesized through direct chemical reduction Ag+ by mucilage extracted from Opuntia ficus-indica. identified characterized using ultraviolet-visible spectroscopy, transmission electron microscopy square wave voltammetry. Modification GC with AgNPs carried out via a transfer-sticking technique an immobilization time 1 h. The Mucilage-AgNPs/GC studied as possible anode in biofuel cell. resulted current density power 85.7 μA cm−2 25.7 μW cm−2, respectively. Glucose sensing achieved successfully two pathways: AgNP inhibition. oxidation-based sensor showed lower detection limit 0.01 mM linear range to 2.2 mM. inhibition-based provides indirect determination pathway 0.1 1.9 inhibition is novel that could be used determining large number organic inorganic molecules. Overall, considered pioneering fuel cell applications.