To evaluate supports’ effects on catalytic activity toward the oxygen reduction reaction (ORR), a simple and controlled chemical synthesis, involving hot injection of metal precursors, was developed to produce bimetallic PtNi nanoparticles (75 wt.% Pt 25 Ni), supported carbon nanotubes (CNTs) nanofibers (CNFs). The synthesized electrocatalyst characterized using X-ray diffraction (XRD), energy ...

An important stage in the development of platinum electrocatalysts on carbon support is analysis their basic parameters. Cyclic voltammetry an effective tool for analyzing structural and electrochemical properties such electrocatalysts. Using Frumkin adsorption isotherms, contribution surface to hydrogen region was well described by three peaks corresponding different crystal structures. The sc...

Abstract Mucin-1 (MUC-1) is associated with a broad range of human epithelia including gastric, lung and colorectal. In this work, direct competitive electrochemical immunosensor based on gelatin modified transduction platform was designed. Dopamine (DA)/mucin-1 functionalized electro-active carbon nanotubes were employed as signal generating probes in the construction for early stage diagnosis...

Original article Lactate biosensor Lactate Oxidase TGA, K Fe(CN) Micro-device Cyclic voltammetry 3 6

     Clinical and Epidemiological studies have shown that a diet rich in fruits and vegetables is associated with a decreased risk of cardiovascular diseases, cancers and other related disorders. These beneficial health effects have been attributed in part to the presence of antioxidants in dietary plants. Therefore screening for antioxidant properties of plant extracts has been one of the inte...

There are various ways to impose a potential variation in time, and subsequently a series of voltammetric methods. Cyclic voltammetry relies on linearly scanning the potential in time, observing a triangular waveform variation [1-3]. Differential pulse voltammetry is based on two samplings of the current intensity for each potential pulse: one measurement before applying the pulse, and the seco...

Ochratoxin A (OTA) is considered the most toxic member of ochratoxin group. Herein, a novel label-free electrochemical sensor based on horseradish peroxidase (HRP) enzyme developed for OTA detection. The HRP was covalently immobilized working electrode planar boron-doped diamond (BDD) microcell previously covered with diazonium film and grafted single-walled carbon nanotubes (SWCNTs). Each surf...

In this review, we focus on cyclic voltammetry as a reliable electrochemical technique to study mechanisms, kinetics and thermodynamics of various types of drug-drug interactions. While we present and discuss six theoretical models relevant to analyze drug-drug (or drug-DNA) interactions, we also give hints about recent experimental achievements in this field. In addition, we provide the reader...