A thin film consisting of highly ordered and vertically oriented silica mesochannels (SMCs) was prepared on the indium tin oxide (ITO) coated glass electrode surface by chronopotentiometry. The mesochannel has a uniform pore size of 2-3 nm in diameter and a positively charged surface due to grafted ammonium groups. The electrostatic and steric effects resulted from control of the surface charge...

Detection of melamine has been developed by employing oxidized polycrystalline gold electrode (poly GE). The poly GE was directly utilized for the detection of melamine using differential pulse voltammetry (DPV) and impedimetry. Poly GE successfully showed the oxidation peak for melamine adsorption at 1.1 V is purely based on the detection of adsorption signals of melamine at the electrode surf...

A molecular imprinted polymer (MIP) was computationally designed and synthesized for the selective extraction of metaproterenol (MTP), from human plasma. In this regards semi empirical MP3 and mechanical quantum (DFT) calculations were used to find a suitable functional monomers. On the basis of computational and experimental results, acrylic acid (AA) and DMSO:MeOH (90:10 %V/V) were found to b...

The use of reduced graphene oxide (rGO) and multi-walled carbon nanotubes (MWCNTs) has attracted considerable interest for fabrication chemical sensors biosensors in recent years. In this study, we report on two ultrasensitive DNA based a sensing mechanism driven by the electrostatic attraction [Ru(NH3)6]3+ cations electrode surfaces modified with Au-MWCNTs Au-rGO. A one-step pot synthesis was ...

In the present paper, the electrochemical properties of magnetic iron oxide nanoparticles (Fe2O3 and Fe3O4) as highly sensitive sensors for the simultaneous determination of hydrazine and hydroxylamine was described. The electrochemical behavior of hydrazine and hydroxylamine was investigated using cyclic voltammetry, chronoamperometry and differentia...

This paper presents the development of a cheap and rapid electrochemical sensor for ascorbic acid detection. In particular, graphite ink working electrode screen-printed cells was covered by film elecrosynthesized molecularly imprinted polypyrrole (e-MIP); differential pulse voltammetry (DPV) selected method analyte The molecules were successfully entrapped in film, creating recognition sites. ...

We report on the development of an electrochemical sensor platform based modified cotton fibers for non-enzymatic detection uric acid (UA), important biomarker gout disease. To create flexible electrode, a thread was coated with carbon ink as pre-conductive layer prior to direct electrodeposition AuNPs. Then, differential pulse voltammetry (DPV) used evaluate performances, and linear range betw...

As a noble metal, gold is considered the most popular material in electrocatalysis. In spite of that, this metal highly expensive manufacture low-cost appliances. present work, scrap gold, produced jewellery as waste, introduced resource to be recycled. A electrode was fabricated by connecting tablet shaped recycled with copper wire inserting into polytetrafluoroethylene (PTFE) tube. The manufa...

In this present study, ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate (IL)) modified pencil graphite electrode (IL-PGEs) was developed for electrochemical monitoring of DNA hybridization related to Microcystis spp. (MYC). The characterization of IL-PGEs was performed using microscopic and electrochemical techniques. DNA hybridization related to MYC was then explored at the surfac...

A novel and effective electrochemical sensor for the determination of morphine (MO) in 0.04 mol L(-1) universal buffer solution (pH 7.4) is introduced using gold nanoparticles electrodeposited on a Nafion modified carbon paste electrode. The effect of various experimental parameters including pH, scan rate and accumulation time on the voltammetric response of MO was investigated. At the optimum...