Study on Electrochemical Behavior of Hydrazine at a Glassy Carbon Electrode Modified with Polymer Thin Films Embedded Copper Nanoparticles
- سال انتشار: 1400
- محل انتشار: دوفصلنامه ایرانی شیمی تجزیه، دوره: 8، شماره: 2
- کد COI اختصاصی: JR_IJAC-8-2_006
- زبان مقاله: انگلیسی
- تعداد مشاهده: 173
نویسندگان
Department of Chemistry, Payame Noor University, PO BOX ۱۹۳۹۵-۳۶۹۷, Tehran, Iran
Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz ۵۳۷۱۴-۱۶۱, Iran
Department of Chemistry, Payame Noor University, PO BOX ۱۹۳۹۵-۳۶۹۷, Tehran, Iran
چکیده
In this study, a novel and convenient electrochemical sensor was fabricated by using dripping well-dispersed graphene oxide nanosheets, electropolymerization of poly glycine (p-Gly) and in situ plating of metallic copper nanoparticle film methods, successively. This sensor was further employed to investigate the electrochemical behavior of hydrazine. Scanning electron microscopy and energy dispersive X-ray spectrometry were used for the characterization of the prepared film. Anodic peak potential of hydrazine oxidation at the surface of modified electrode shifts by about ۱۵۰ mV toward negative values compared with that on the bare electrode. The kinetic parameters such as the electron transfer coefficient (α) and charge transfer rate constant (k) for the oxidation of hydrazine was determined utilizing cyclic voltammetry (CV). The diffusion coefficient (D) of hydrazine was also estimated using chronoamperometry. The dynamic detection range of this sensor to hydrazine was ۵- ۶۰ and ۸۰- ۱۵۰ µM at the modified electrode surface using an amperometric method. The detection limit and quantitation are ۵.۳۳ µM and ۱۷.۷۷ µM, respectively. A new voltammetric method for determination of hydrazine was erected and shows good sensitivity and selectivity, wider linear relationship, very easy surface update and good stability.کلیدواژه ها
Hydrazine, Modified glassy carbon electrode, Copper nanoparticle, Glycine. Graphene Oxide Nanosheetsاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.