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Nitrite sensor based on room temperature ionic liquid functionalized α-zirconium phosphate modified glassy carbon electrode
Journal of Materials Research ( IF 2.7 ) Pub Date : 2020-08-24 , DOI: 10.1557/jmr.2020.225
Yuting Ge , Fengyan Gu , Lin Liu , Pengjin Fang , Jiadong Zhou , Han Cheng , Juanjuan Ma , Zhiwei Tong , Jianwei Wang , Bin Zhang

A novel ionic liquid/α-ZrP (C16MIM/α-ZrP) lamellar nanocomposite was fabricated via the electrostatic self-assembly deposition technique by using exfoliated α-ZrP nanosheets and guest molecules (1-hexadecyl-3-methylimidazolium bromide) as building blocks under mild conditions. C16MIM/α-ZrP nanocomposite was characterized by various analytical techniques such as X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscope (SEM), Fourier transform infrared spectroscopy, and synchronous thermal analyzer. The net interlayer spacing of α-ZrP determined by XRD confirmed that the C16MIM cations formed a monolayer arrangement between the α-ZrP nanosheets. The morphology and microstructure of C16MIM/α-ZrP composite were observed using SEM and TEM. The C16MIM/α-ZrP modified glass carbon electrode exhibited excellent electrocatalytic activity toward the oxidation of nitrite in weak base media. The results obtained with differential pulse voltammetry demonstrated that the C16MIM/α-ZrP hybrid detected nitrite linearly in the concentration range from 7.3 μM to 1.25 mM with the detection limit of 1.26 μM (S/N = 3). Additionally, the prepared sensor showed outstanding reproducibility, high stability, and anti-interference capability.



中文翻译:

基于室温离子液体功能化α-磷酸锆改性玻碳电极的亚硝酸盐传感器

以脱落的α-ZrP纳米片和客体分子(1-十六烷基-3-甲基咪唑鎓溴化物)为材料,通过静电自组装沉积技术制备了新型离子液体/α-ZrP(C 16 MIM /α-ZrP)层状纳米复合材料。温和条件下的积木。C 16 MIM /α-ZrP纳米复合材料的特征在于采用各种分析技术,例如X射线衍射(XRD),透射电子显微镜(TEM),扫描电子显微镜(SEM),傅里叶变换红外光谱和同步热分析仪。通过X射线衍射确定的α-ZrP的净层间间隔证实了C 16 MIM阳离子在α-ZrP纳米片之间形成单层排列。C 16的形态和微观结构用SEM和TEM观察了MIM /α-ZrP复合材料。C 16 MIM /α-ZrP改性玻璃碳电极对弱碱介质中的亚硝酸盐氧化表现出出色的电催化活性。差分脉冲伏安法获得的结果表明,C 16 MIM /α-ZrP杂化体在7.3μM至1.25 mM的浓度范围内线性检测亚硝酸盐,检测限为1.26μM(S / N = 3)。另外,所制备的传感器显示出优异的再现性,高稳定性和抗干扰能力。

更新日期:2020-08-24
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