Research on synthesis and electrochemical properties of MIL-53 /rGO materials and application of electrochemical sensor development to detect Cd2+ ions in aqueous solutions

Luyen Thi Tran, Hue Minh Thi Dang, Giang Linh Thi Hoang, Quan Duc Nguyen, Thang Duc Nguyen, Cuong Xuan Trinh, Hoang Vinh Tran, Chinh Dang Huynh

Abstract


MIL-53/rGO material has been synthesized in a 2-step process on the basis of metal organic framework material of MIL-53(Fe) and reduced graphene (rGO). Material characteristics were studied through XRD, SEM, and electrochemical DPV measurements. Electrochemical sensor based on nanocomposite MIL-53(Fe)/rGO material has been developed, showing outstanding advantages including the ability to detect directly Cd2+ ions in aqueous solution, fast detection time and sensitivity. quite tall. The relationship between the sensor output signal (Ipeak) and the concentration of Cd2+ ions in the range 1 to 9 μM is linear, having the square of the correlation coefficient R2 = 0.9705.


Keywords


MIL-53/rGO; heavy metal ions; metal organic framework; Electrochemical sensor

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DOI: https://doi.org/10.51316/jca.2022.080

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