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标题:Surface properties of nano-Al2O3 film and its application in the preparation of morphine electrochemical sensor
时间:2020-02-15 13:57:43
DOI:10.1007/s11581-013-0929-7
作者:Vahid Arabali; Roya Sadeghi
关键词:Practical, Experimental/ alumina; electrical conductivity; electrochemical sensors; nanofabrication; nanoparticles; nanosensors; scanning electron microscopy; sol-gel processing; thin films; X-ray chemical analysis; X-ray diffraction/ nanosensor preparation; morphine analysis; linear response; detection limit; morphine determination; human urine; drug; carbon paste electrode surface; electron conductivity; silicon substrate; mass ratio; O element; Al element; atomic ratio; SEM technique; scanning electron microscopy; EDX technique; energy dispersive spectroscopy; XRD technique; X-ray diffraction; silicon surface; nanoaggregate aluminum atoms; grain nanostructures; structural properties; chemical composition; thermal growth; sol-gel method; alumina nanoparticles; morphine electrochemical sensor preparation; nanoalumina film; surface properties; Al 2O 3; Si/ A8116 Methods of nanofabrication and processing A6146 Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials A8115L Deposition
出版源: 《Ionics》 ,19 (12) :1775-1782
摘要:In this study, alumina nanoparticles and film were synthesized by sol-gel method and thermally grown. The chemical composition, morphology, and structural properties of the grain nanostructures of the nanoaggregate aluminum atoms on the silicon surface are characterized by X-ray diffraction, energy dispersive spectroscopy, and scanning electron microscopy techniques which show that the atomic ratio of Al and O elements is about 60:45 and the mass ratio is about 70:31. This point reveals that there is no intermediate layer between Al 2O 3 and the silicon substrate. In conclusion, this nanoparticle shows good electron conductivity at the surface of a carbon paste electrode that shows its ability in the preparation of a nanosensor in morphine analysis. The linear response range and detection limit were found to be 0.1-550 and 0.03 mumol L -1, respectively. The proposed sensor was successfully applied for the determination of morphine in real samples such as human urine and drug.
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目录:
  • Surface properties of nano-Al2O3 film and its application in the preparation of morphine electrochemical sensor
    • Abstract
    • Introduction
    • Experimental
      • Chemical and apparatus
      • Synthesis of Al2O3
      • Preparation of the electrode for electrochemical investigation
    • Results and discussion
      • Synthesis investigation
      • Electrochemical investigation
    • Conclusions
    • References

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