Carbon nanotubes (CNTs) reinforced with gold nanoparticles (AuNPs) and chitosan nanoparticles (CTSNPs) were anchored on a screen-printed electrode to fabricate a multi-walled structure for the detection of quinoline. The surface morphology of the nanocomposites and the modified electrode was examined by an ultra-high resolution field emission scanning electron microscope (FESEM), and Fourier-tr...

Due to their unique physicochemical properties, carbon nanochips (CNCs) have been used for studies of the direct electrochemical and electrocatalytic properties of oxidoreductase. In this report, a glassy carbon electrode (GCE) was modified with CNCs, and glucose oxidase (GOx) was immobilized on the modified electrode surface. Chitosan (CS) was employed to fix the GOx/CNCs tightly to the surfac...

This study describes a facile and effective route to synthesize hybrid material consisting of Co3O4 nanoparticles anchored on nitrogen-doped reduced graphene oxide (Co3O4/N-rGO) as a high-performance tri-functional catalyst for oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and H2O2 sensing. Electrocatalytic activity of Co3O4/N-rGO to hydrogen peroxide reduction was tested by ...

Soil enzymes play essential roles in catalyzing reactions necessary for nutrient cycling in the biosphere. They are also sensitive indicators of ecosystem stress, therefore their evaluation is very important in assessing soil health and quality. The standard soil enzyme assay method based on spectroscopic detection is a complicated operation that requires the removal of soil particles. The purp...

Nanoparticle-imprinted matrices (NAIMs) were prepared using ammonium-terminated SiO2 nanoparticles (NPs) as templates initially attached to activated glassy carbon. After electrodeposition of a matrix polyplumbagin and polyphenol, the selectivity polymer was tuned towards ligand shell Au analyte NPs by conjugate addition substituted thiols plumbagin moiety within matrix. The reactions followed ...

The aim of this study is to develop polymeric thin films for corrosion protection magnesium alloy AZ31. As polymer matrix, poly(4-vinyl pyridine) (P4VP) selected due its semiconducting properties and protonic conductivity. Polyacrylic acid tested as crosslinking layers improve interfacial adhesion. macroscopic the multilayer coatings are investigated by means electrochemical methods, such linea...

In this study, Ti/SnO2-Sb2Ox-TiO2 electrodes were produced using a sol-enhanced electrodeposition technique from methanesulfonate electrolytes. The surface microstructures of observed, and their phase constituents determined. features analyzed by X-ray photoelectron spectroscopy. Linear sweep voltammetry degradation tests also conducted to determine the performance. results show that addition T...

Abstract Hydrogen energy is the cleanest at present because its combustion product and no carbon emission. Electrolysis of water to produce hydrogen generally considered be most promising method in large quantities. But electrolysis without use a catalyst. Manganese dioxide an efficient green MnO 2 dioxide-polyaniline electrode was prepared by CV CV/CA respectively. The properties were studied ...

Graphene oxide drop-casted on a platinum microelectrode was successfully changed to reduced graphene by using cyclic voltammetry method. The presence of an electrochemically layer the electrode proved scanning electron microscopy images, Raman and Fourier-transform infrared spectroscopy spectra. Cyclic linear sweep results indicated that modified with can be used as electrochemical sensor for d...