Abstract
AbstractA metal organic framework/reduced graphene oxide nanocomposite is fabricated using an effective two‐step protocol. X‐ray diffraction and scanning electron microscopy results demonstrate that the MIL‐53(Fe) is formed on the reduced graphene oxide's surface with an average particle size of 1.13 μm. A glassy carbon electrode modified with MIL‐53(Fe)/rGO is obtained by drop‐casting of the nanomaterial onto the GCE's surface, and this result is proven by electrochemical measurements. The glassy carbon electrode modified with MIL‐53(Fe)/rGO is used as an electrochemical sensor for detection of Cd2+ in aqueous solutions by a differential pulse voltammetry technique. The sensor shows outstanding merits including the ability of direct detection, a rapid detection time, and a quite high sensitivity. The relationship between the sensor's output signal and the concentration of Cd2+ ions is linear in the concentration range from 1.0 to 7.0 μM. The sensor has a detection limit of 698 nM.
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