چکیده مقاله
This research describes a nanocomposite comprising graphene quantum dot GQD and silver based metal organic framework Ag MOF , GQD Ag MOF, which was utilized as modifier in order to introduce of a new electrochemical sensor for quantification of diazepam The GQD Ag MOF nanocomposite was characterized using FTIR, XRD, DLS, FESEM and TEM, and was applied to make a modified carbon paste electrode CPE Based on the cyclic voltammetry CV results, it was confirmed that the GQD Ag MOFznanocomposite modified CPE GQD Ag MOF/CPE has well electrocatalytic activity towards the diazepam oxidation Also, the catalytic electron transfer rate constant k' and electron transfer coefficient a for the diazepam oxidation at the surface of GQD Ag MOF/CPE were investigated The species diffusion coefficient and studying analytical performance of the proposed sensor were also evaluated using chronoamperometry By the square wave voltammetry SWV , the linear response range of 1 0 0 11 1 μM of diazepam and a limit of detection of 1 1 μM were obtained Eventually, the introduced sensor was satisfactorily utilized for quantification of these substances in medicinal and biological samples
کلیدواژهها
نویسندگان
M. Reza Shishehbore
Department of Chemistry , Yazd Branch , Islamic Azad University , yazd , Iran
Fahimah Ghafoori
Department of Chemistry , Yazd Branch , Islamic Azad University , yazd , Iran
شیوه ارجاع
Shishehbore, M. Reza and Ghafoori, Fahimah,1402,Graphene quantum dot/Ag-based metal-organic framework nanocomposite modified carbon paste electrode for determination of diazepam in real samples,The 2nd international conference of advanced research of nanotechnology students,Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس بین المللی تحقیقات پیشرو دانشجویان نانو فناوری26 مهر 1402 · تهران