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Abstract: In order to develop a novel method for the detection of nitrocellulose (NC), an electrochemical sensor based on silica surface molecularly imprinted polymers (SiO2/MIPs) modified electrode was prepared to detect NC. In addition, SiO2 non-imprinted polymers-based (SiO2/NIPs) sensor was prepared as a control. The response characteristic of SiO2/MIPs-based sensor to NC was studied with [Fe(CN)6]3-/4- as a probe molecule. The SiO2/MIPs-based sensor have an optimized current responsiveness to NC when it was prepared at temperature of 50 ℃ and 1 : 3 proportion of methacrylic acid to ethyleneglycol dimethacrylate. The current response of SiO2/MIPs-based sensor is the most significant under the NC solution of 4.0 mg mL-1, incubation period of 1 min and [Fe(CN)6]3-/4- electrolyte of 5 mM. The SiO2/MIPs-based sensor had the greatest response capacity for NC among the several analogues, which indicates that the SiO2/MIPs-based sensor has a good specificity to NC. Furthermore, the SiO2/MIPs-based sensor exhibited an excellent reproducibility in repeated measurements. Results show the prepared SiO2/MIPs-based sensor can be a potential candidate for the detection of NC in the security checking and hazard control
Template and target information: nitrocellulose
Author keywords: surface molecularly imprinted polymers, detection, Nitrocellulose, Electrochemical sensor, Current response capacity