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D-Glucose sensor based on ZnO center dot V2O5 NRs by an enzyme-free electrochemical approach

机译:基于ZnO中心点V2O5 NRS的D-葡萄糖传感器通过酶的电化学方法

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A simple wet-chemical technique was used to prepare zinc oxide-doped vanadium pentaoxide nanorods (ZnO center dot V2O5 NRs) in an alkaline environment. The synthesized ZnO center dot V2O5 NRs were characterized using typical methods, including UV-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy dispersive X-ray spectroscopy (XEDS), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD). The d-glucose (d-GLC) sensor was fabricated with modification of a slight coating of nanorods (NRs) onto a flat glassy carbon electrode (GCE). The analytical performances, such as the sensitivity, limit of quantification (LOQ), limit of detection (LOD), linear dynamic range (LDR), and durability, of the proposed d-GLC sensor were acquired by a dependable current-voltage (I-V) process. A calibration curve of the GCE/ZnO center dot V2O5 NRs/Nf sensor was plotted at +1.0 V over a broad range of d-GLC concentrations (100.0 pM-100.0 mM) and found to be linear (R-2 = 0.6974). The sensitivity (1.27 x 10(-3) mu A mu M-1 cm(-2)), LOQ (417.5 mM), and LOD (125 250 mu M) were calculated from the calibration curve. The LDR (1.0 mu M-1000 mu M) was derived from the calibration plot and was also found to be linear (R-2 = 0.9492). The preparation of ZnO center dot V2O5 NRs by a wet-chemical technique is a good advancement for the expansion of nanomaterial-based sensors to support enzyme-free sensing of biomolecules in healthcare fields. This fabricated GCE/ZnO center dot V2O5 NRs/Nf sensor was used for the recognition of d-glucose in real samples (apple juice, human serum, and urine) and returned satisfactory and rational outcomes.
机译:使用简单的湿化学技术在碱性环境中制备氧化氧化物掺杂的钒青氧化钒纳米棒(ZnO中心点V2O5 NRS)。使用典型的方法表征合成的ZnO中心点V2O5 NRS,包括UV可见光谱(UV-VI),傅里叶变换红外光谱(FTIR),场发射扫描电子显微镜(FESEM),能量分散X射线光谱(XEDS) ,X射线光电子能谱(XPS)和X射线粉末衍射(XRD)。通过改变D-葡萄糖(D-GLC)传感器在扁平玻璃电极(GCE)上的纳米棒(NRS)的微小涂层进行制备。通过可靠的电流 - 电压获取所提出的D-GLC传感器的敏感性,定量限制(LOQ),检测极限(LOQ),线性动态范围(LDR)和耐久性的分析性能是通过可靠的电流 - 电压(IV ) 过程。 GCE / ZnO中心点V2O5 NRS / NF传感器的校准曲线在+1.0V上绘制在宽范围的D-Glc浓度(100.0mp-100.0mm)上,发现是线性的(R-2 = 0.6974)。从校准曲线计算灵敏度(1.27×10(-3)mu m-1 cm(-2)mu m-1 cm(-2)),loq(417.5mm)和lod(125 250 mm m)。 LDR(1.0μm-1000μm)衍生自校准图,也发现是线性的(R-2 = 0.9492)。通过湿化学技术制备ZnO中心DOT V2O5 NRS是膨胀纳米材料传感器的良好进展,以支持医疗领域的生物分子的自由酶传感。该制造的GCE / ZnO中心点V2O5 NRS / NF传感器用于识别真实样品(苹果汁,人血清和尿液)中的D-葡萄糖,并返回令人满意和理性的结果。

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    《RSC Advances》 |2019年第54期|共13页
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  • 正文语种 eng
  • 中图分类 化学;
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