Novel MOFs@XC-72-Nafion nanohybrid modified glassy carbon electrode for the sensitive determination of melamine. (1st September 2016)

• Record Type: Journal Article
• Authors: Zhang, Wanqing; Xu, Guangri; Liu, Runqiang; Chen, Jun; Li, Xiaobo; Zhang, Yadong; Zhang, Yuping
• Is Part Of: Electrochimica acta. Volume 211(2016)
• Page Start: 689
• Page End: 696
• Publication Date: 2016-09-01
• Subjects: MOFs@XC-72 hybrid -- electrochemical sensor -- sensitive -- melamine -- liquid milk; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.06.100
• Languages: English
• ISSNs: 0013-4686

Abstract

Highlights: The MIL-53@XC-72 nanohybrid was synthesized from MIL-53 and followed by adulterating with XC-72. The synergistic effect of MIL-53 and XC-72 had promoted sensitivity and selectivity of the sensor. The reaction mechanism of melamine at sensors was explained. Abstract: A sensitive and selective sensor was fabricated to determine melamine (Mel), based on MIL-53@XC-72 nanohybrid modified glassy carbon electrode (GCE). The MIL-53@XC-72 nanohybrid was synthesized from MIL-53 via hydrothermal method, followed by adulterating with XC-72. The prepared sensor possessed high sensitivity and selectivity due to the synergistic effect of the large surface of MIL-53, the bonding interaction between Mel and MIL-53 as well as the high conductivity of XC-72. Under the optimal conditions, the sensor exhibited rapid electrochemical response to Mel at the potential of 0.7 V in 0.1 M HCl solution. A linear concentration range of Mel was obtained from 0.04 to 10 μM with a linear correlation coefficient of 0.998 and detection limit of 0.005 μM (S/N = 3). In addition, the sensor presented excellent reproducibility, high stability and selectivity, and was successfully applied for the determination of Mel in liquid milk with a good recoveries. Hence, the MOFs@XC-72-Nafion-GCE sensor could be considered as promising applicability for the determination of other electrochemically inactive analytes.