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首页> 外文期刊>RSC Advances >Wet-chemically prepared low-dimensional ZnO/Al2O3/Cr2O3 nanoparticles for xanthine sensor development using an electrochemical method
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Wet-chemically prepared low-dimensional ZnO/Al2O3/Cr2O3 nanoparticles for xanthine sensor development using an electrochemical method

机译：使用电化学方法湿化化学制备的低维ZnO / Al2O3 / Cr2O3纳米粒子用于黄嘌呤传感器开发

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摘要

A reliable xanthine (XNT) chemical sensor was fabricated using a facile wet-chemical method (by co-precipitation) to prepare ZnO/Al2O3/Cr2O3 nanoparticles (NPs) in an alkaline medium at low temperature. Powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible spectroscopy (UV-vis) were implemented for detailed characterization of the NPs. To fabricate the working electrode as a XNT chemical sensor probe, a glassy carbon electrode (GCE) with a 0.0316 cm(2) surface area was coated with an ethanolic slurry of the prepared ZnO/Al2O3/Cr2O3 NPs to make a thin layer and used to analyse XNT in a phosphate buffer system. To evaluate the analytical performances of the XNT chemical sensor, the calibration curve of XNT was plotted as the relationship of current versus the concentration of XNT. The plotted calibration curve was found to be linear over the LDR (linear dynamic range) of 0.05 nM to 5.0 M. The assembled XNT electrochemical sensor exhibited the highest sensitivity (70.8861 A M-1 cm(-2)), the lowest detection limit (1.34 +/- 0.07 pM), good reproducibility performance with high accuracy and long-term stability with standard results under ambient conditions. This is a simple route to selectively detect XNT with wet-chemically prepared co-doped ZnO/Al2O3/Cr2O3 nanomaterials using a reliable electrochemical method at a large scale for safety within healthcare fields.
机译：使用容易的湿化学方法（通过共沉淀）制造可靠的黄嘌呤（XNT）化学传感器，以在低温下在碱性介质中制备ZnO / Al 2 O 3 / Cr 2 O 3纳米颗粒（NPS）。粉末X射线衍射（XRD），X射线光电子能谱（XPS），场发射扫描电子显微镜（FESEM），能量分散X射线光谱（EDS），傅里叶变换红外光谱（FTIR）和紫外线可见光谱（UV-VI）实施了NPS的详细表征。为了制造作为XNT化学传感器探针的工作电极，用制备的ZnO / Al2O3 / Cr2O3 NP的乙醇浆料涂覆具有0.0316cm（2）表面积的玻璃碳电极（GCE），以制备薄层并使用分析磷酸盐缓冲系统中的XNT。为了评估XNT化学传感器的分析性能，绘制XNT的校准曲线作为电流关系与XNT浓度的关系。发现绘制的校准曲线在0.05nm至5.0 m的LDR（线性动态范围）上线性。组装的XNT电化学传感器具有最高的灵敏度（70.8861A M-1 cm（-2）），最低检测限（1.34 +/- 0.07 PM），具有高精度和长期稳定性的良好再现性能，标准稳定性在环境条件下。这是一种简单的途径，可使用可靠的电化学方法选择性地检测湿化学制备的共掺杂ZnO / Al2O3 / Cr2O3纳米材料，以便在医疗领域的大规模安全。

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  • 来源
    《RSC Advances》 |2018年第23期|共11页
  • 作者

    Alam M. M.; Asiri Abdullah M.; Uddin M. T.; Islam M. A.; Rahman Mohammed M.;

  • 作者单位

    Shahjalal Univ Sci &

    Technol Dept Chem Engn &

    Polymer Sci Sylhet 3100 Bangladesh;

    King Abdulaziz Univ Fac Sci Dept Chem POB 80203 Jeddah 21589 Saudi Arabia;

    Shahjalal Univ Sci &

    Technol Dept Chem Engn &

    Polymer Sci Sylhet 3100 Bangladesh;

    Shahjalal Univ Sci &

    Technol Dept Chem Engn &

    Polymer Sci Sylhet 3100 Bangladesh;

    King Abdulaziz Univ Fac Sci Dept Chem POB 80203 Jeddah 21589 Saudi Arabia;

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