نتایج جستجو برای: cyclic voltametry

تعداد نتایج: 98374  

Journal: :Oriental journal of chemistry 2022

Organo azides are potential precursors for the preparation of amines by different ways chemical reduction. In present studies , a simple and more convenient method was developed to reduce corresponding amine or sulphonamide under electrochemical condition using sodium ascorbate as promoter platinum electrodes. The reduction achieved with sulfonyl azides, alkyl aryl moderate quantitative yields....

Journal: :iranian journal of pharmaceutical research 0
ali reza khajeamiri police university, tehran, iran

a fiber coating from polyaniline (pani) was electrochemically prepared and employed for solid phase micreoextraction (spme). the pani film was directly electrodeposited on the platinum wire surface using cyclic voltametry (cv) technique. the same method was applied for the preparation of spme fiber coated by polyaniline multiwalled carbon nanotubes (pani/mwcnts) composite. the concentration of ...

2016
Naseer Iqbal Ibrahim Khan Zain H Yamani Ahsanullhaq Qurashi

Gallium oxynitride (GaON) nanosheets for photoelectrochemical (PEC) analysis are synthesized via direct solvothermal approach. Their FE-SEM revealed nanosheets morphology of GaON prepared at a reaction time of 24 hours at 180 °C. The elemental composition and mapping of Ga, O and N are carried out through electron dispersive X-ray spectroscopy (EDX). The cubic structure of GaON nanosheets is el...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده علوم 1393

در این کار به منظور اندازه گیری هورمون رشد در نمونه های سرم خون انسان و نمونه های دارویی توسط یک الکترود پلاتین و تبدیل آن به یک حسگر سطح الکترود پلاتین توسط روش الکتروپلیمریزاسیون اصلاح گردید لایه اصلاح گر ایجاد شده روی سطح الکترود مذکور خاصیت الکتروشیمیایی و حساسیت آن را نسبت به هورمون رشد انسانی به مراتب افزایش داد و در نتیجه این الکترود از زمان پاسخ دهی کوتاه حد تشخیص پایین دقت و گزینش پذیر...

2012
C. Lekakou O. Moudam F. Markoulidis T. Andrews J. F. Watts G. T. Reed

This paper investigates electrochemical double layer capacitors (EDLCs) including two alternative types of carbon-based fibrous electrodes, a carbon fibre woven fabric (CWF) and a multiwall carbon nanotube (CNT) electrode, as well as hybrid CWFCNT electrodes. Two types of separator membranes were also considered. An organic gel electrolyte PEO-LiCIO4-EC-THF was used to maintain a high working v...

2015
Hongfang Zhang Pengli Li Mengmeng Wu

The determination of cholesterol is increasingly important for the fact that high serum cholesterol level was related with many diseases. In this work, a new cholesterol biosensor was developed based on the gold-graphene nanocomposite material prepared by one-step electrodeposition. The nanomaterial formed on a glassy carbon electrode was proved by scanning electron microscope and the electroch...

2017

The Camphor sulphonic acid doped polyaniline (CSA-PANi)is synthesized by chemical polymerization method and then characterized by using UV-Visible and FTIR. The surface morphology is studied by SEM and AFM techniques. The degree of crystallinity of PANiis studied by XRD and redox behaviour by cyclic voltametry. Thermal stability of the doped polymer is investigated by TGA and DSC.The fluorescen...

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