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عنوان دوره: اولین همایش ملی توسعه فناوری نانو در علوم پایه و مهندسی

کد مقاله : 1015-DNBSE

¹فاطمه رهنمای رهسپار ؛ ²امین الهوردیان

¹تهران- تهران-دانشکده شیمی- دانشگاه تهران

²تهران- تهران- دانشگاه تهران

In recent years, the innovation in fabrication methods of nanoparticles@graphene oxide (graphene derivatives) composites has attracted much attention due to their multi-functionalization of surface for various applications, such as sensing. In this study, copper oxide-cerium oxide@reduced graphene oxide (CeO2-CuOX@rGO) nanocomposite has been synthesized by the hydrothermal approach, and then X-ray powder diffractometer (XRD) and Fourier transform infrared spectroscopy (FTIR) were used to examine the structure of the CeO2-CuOX@rGO nanocomposite. Also, field emission scanning electron microscopy (FE-SEM) and elemental mapping were performed to characterize the morphology and the distribution of elements within the nanocomposite, respectively. Based on the produced nanocomposite (CeO2-CuOX@rGO), a modified glassy carbon electrode (GCE) was employed for the detection of tyrosine, and the electrochemical properties of this electrochemical sensor were studied by cyclic voltammetry (CV). Compared to graphene oxide, copper oxide, and cerium oxide, this novel nanocomposite, with the availability of a large variety of functional groups, shows excellent results at pH = 6.5 and a scan rate of 100 mV/s for tyrosine detection.

Tyrosine؛ nanocomposite؛ CeO2-CuOX@rGO؛ hydrothermal؛ Electrochemical Sensor

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