In-situ Immobilization of a Polyoxometalate Metal-Organic Framework (NENU-3) on Functionalized Reduced Graphene Oxide for Hydrazine Sensing

摘要

Detection of hydrazine originated from electrochemical media has recently gained considerable attention in the sensing field.Herein,to improve electron transfer capacity,a polyoxometalate metal-organic framework (POMOF,NENU-3) is in-situ nucleated onto the carboxyl functionalized reduced graphene oxide (CFG) (NENU-3/CFG,abbreviation N3/CFG).The N3/CFG supported onto carbon cloth electrodes (CCEs) has been investigated for hydrazine detection.The amperometric results display that the POMOF/CFG to hydrazine has a broad linear range (0.09-362.5 μmol/L) and low detection limit (24 nmol/L).In addition,the POMOF/CFG-based sensors pos-sess good anti-interference capability,boosted stability and feasibility.Furthermore,when applied to the detection of practical sam-ples,acceptable relative recoveries of 96.26％-107.30％ are obtained.