Electrodeposition of anionic, cationic and nonionic surfactants and gold nanoparticles onto glassy carbon electrode for catechol detection

the effect of anionic and cationic surfactants on electrodeposition of ni/tin nanocomposite coating

composite electrodeposition is a low-cost and low-temperature method, which is used to make metal matrix composite coatings. in this study the surfactant of anionic(sds) and cationic (ctab) is used as additive in composite coating of ni/tin. the results showed that the anionic surfactant caused more particles in the composite coatings. increasing sds concentration to the optimal value leads to ...

Simultaneous Separation of Anionic, Nonionic, Cationic and Amphoteric Surfactants Using a Single HPLC Column

High performance liquid chromatography (HPLC) is the preferred analytical technique for the separation and identification of surfactants in consumer products. Although many HPLC columns are available for surfactant analysis, none of these columns provide optimal selectivity for the analysis of anionic, nonionic, cationic, and amphoteric surfactants. This article describes an HPLC column, Acclai...

Fabrication Of Gold Nanoparticles-Modified Glassy Carbon Electrode And Its Application For Voltammetric Detection Of Cr(III)

A sensitive and selective differential pulse stripping voltammetric (DPSV) method is presented for the determination of trace amount Cr(III) using glassy carbon electrode (GCE) modified with gold nanoparticles (AuNPs). The method includes AuNPs fabrication and self-assembly GCE modification. This processes replaced the –H groups with –NH2 groups on the surfaces of GCE which increased the number...

Gold Nanoparticles/Carbon Nanotubes Composite Film Modified Glassy Carbon Electrode Determination of Meclofenoxate Hydrochloride

A novel voltammetric sensor based on gold nanoparticles (GNPs) and single-walled carbon nanotubes (SWNTs) composite was developed. The nanocomposite modified electrode was characterized using atoms force microscope (AFM). The electrochemical behavior of meclofenoxate hydrochloride (MFX) was investigated on this sensor. The results indicated that the GNPs/SWNTs modified electrode exhibited effic...

Interactions between Cationic Starch and Anionic Surfactants

Electrochemical behavior and sensitive determination of L-tyrosine with a gold nanoparticles modified glassy carbon electrode.

The electrocatalytic oxidation of L-tyrosine was investigated on a gold nanoparticles self-assembled glassy carbon electrode (gold nanoparticles/cysteamine/glassy carbon) using cyclic voltammetry and differential pulse voltammetry. Cyclic voltammetry was carried out to study the electrochemical oxidation mechanism of L-tyrosine, which showed an irreversible oxidation process at a potential of 0...