Electrochemical synthesis of Ni nanostructures on paper electrode forsimultaneous sensing of dopamine, tryptophan and ascorbic acid
- سال انتشار: 1395
- محل انتشار: دوازدهمین سمینار سالانه الکتروشیمی ایران
- کد COI اختصاصی: ELECTROCHEMISTRY012_175
- زبان مقاله: انگلیسی
- تعداد مشاهده: 381
نویسندگان
Department of analytical chemistry, Faculty of chemistry, University of Kashan, Kashan, I.R.IRAN
Department of analytical chemistry, Faculty of chemistry, University of Kashan, Kashan, I.R.IRAN
Department of analytical chemistry, Faculty of chemistry, University of Kashan, Kashan, I.R.IRAN
Department of analytical chemistry, Faculty of chemistry, University of Kashan, Kashan, I.R.IRAN
چکیده
In this work we used a simple strategy for simultaneous determination of dopaminehydrochloride(Dph), tryptophan (Trp) and ascor-bic acid (AA) by electrochemical synthesis ofconductive Ni nanostructures (band gap of 1.0eV) on the surface of multiwalled carbon nanotubenanocomposite modified paper electrode (NiNPs/MWCNT/PE). Scanning electron microscopy(SEM), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and differentialpulse vol-tammetry (DPV) were used to characterize the performance and microstructure of thesensor. The diffusion coefficient (D) and the kinetic parameters such as electron transfercoefficient (α) and catalytic rate constant (k) for Dph, Trp and AA were also determined usingelectrochemical approaches [1]. The cyclic voltammetry method showed Dph, Trp and AAoxidation reaction with irreversible characteristics was diffusion-controlled at low scan rates.Under the optimized experimental conditions Dph, Trp and AA give linear response over therange of 0.008 - 70.0 mM, 0.006–50.0 mM and 0.01.0–40.0 mM, respectively.The lower detectionlimits were found to be 0.23 for Dph, 0.10 for Trp and 0.79 nM for AA. The modified electrodeshowed good sensitivity and stability by better response than to other reported papers [2-3].Thepractical application of the modified electrode was demonstrated by measuring the concentrationof Dph, Trp and AA in blood serumand pharmaceutical samples.کلیدواژه ها
Electrochemical deposition, Ni nanostructures, Dopamine-hydrochloride, tryptophanand ascorbic acid, Nanomolar sensorمقالات مرتبط جدید
- Molecular Simulation of Water Transport through Polyamide Membrane in K+Cl- Salt Solution
- نانوکامپوزیت ها در دندانپزشکی
- Improving the characteristics of L-shaped graphene-based gas sensor using gold block on the surface
- Molecular Modelling of Gelatin Bundles for Atomistic Investigations Suggesting Two Stable Conformations
- بررسی تاثیر نانوذرات منیزیم بر جوانه زنی بذر و رشد گیاهچه بادرنجبویه Melissa officinalis
اطلاعات 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.