Ag Functionalized In2O3 Derived From MIL-68(In) as an Efficient Electrochemical Glucose Sensor

In this study, Ag@In2O3 modified nickel foam (NF) was reported for its role as a non-enzymatic glucose sensor. Ag@In2O3 was prepared by a simple two-step method; preparation of a metal-organic framework (MOF) MIL-68(In) by solvothermal method, entrapment of Ag + by adding AgNO3 then drying it for 2 h to complete the entrapment process and subsequent calcination at 650 degrees C for 3 h. The Ag@In2O3 modified NF was employed as a non-enzymatic glucose sensor to determine glucose concentrations in an alkaline medium. Two linear ranges were obtained from Ag@In2O3 modified electrode, i.e., 10 mu M to 0.8 mM and 0.8-2.16 mM with a sensitivity of 3.31 mA mM(-1) cm(-2) and 1.51 mA mM(-1) cm(-2) respectively, with a detection limit of 0.49 mu M. Ag@In2O3 modified NF exhibited high selectivity for glucose, among other interfering agents.

Automated summary

In this study, Ag@In2O3 modified nickel foam was investigated as a non-enzymatic glucose sensor. The modified material exhibited high selectivity and sensitivity for glucose detection in an alkaline medium.