Studies on adsorption of cetyltrimethylammonium bromide at carbon paste electrode and the enhancement effect in thyroxine reduction by voltammetry and electrochemical impedance spectroscopy

Simultaneous Determination of Dihydroxybenzene Isomers at MWCNTs/β‐Cyclodextrin Modified Carbon Ionic Liquid Electrode in the Presence of Cetylpyridinium Bromide

“…However, the induced plus associated adsorption means that the induced adsorption of reactant occurs simultaneously with formation of an associate compound of the adsorbed surfactant with the reactants. The characteristics of the reactants exhibited in the case of the enhancement action are an increase in the peak current but also a shift of the peak potential to negative direction [14,17]. From Figure 3, we can conclude that the enhancement action in this case should be the induced adsorption.…”

“…Wen et al [16] have investigated the micellar effect on the electrochemistry of dopamine and found that the anodic peak current of dopamine is enhanced in sodium dodecyl sulfate micelle. Hus group has introduced surfactants to electroanalytical chemistry to improve the detection limits of some biomolecules [17]. The results showed that the electrochemical responses of these compounds were greatly enhanced in the presence of trace surfactants.…”

Single-chain surfactant monolayer on carbon paste electrode and its application for the studies on the direct electron transfer of hemoglobin

“…Because of the enhancement effect and the ability to change the properties of electrode/solution interface, surfactants have been widely used in electroanalytical chemistry [1][2][3]. Surfactants have been successfully employed by Hu's group to improve the detection limit of several biomolecules [4][5][6]. It was found that the sensitivity of these biomolecules could be enhanced by at least five times just in the presence of trace surfactants in electrolyte.…”

Intercalation of methylene blue in n-alkanethiolated self-assembled monolayers: Versatile electrochemical platforms for characterizing surfactant adsorption on hydrophobic surfaces

“…Although these techniques were powerful tools for characterizing the adsorption of surfactants on solid surfaces, the apparatuses employed were expensive and the operations were complicated. Recently, we reported two electrochemical systems for characterizing the adsorption of cationic surfactants on hydrophobic surfaces of a carbon paste electrode [26] and a disturbed n-alkanethiolated self-assembled monolayers modified gold electrode [27] using potassium ferricyanide (K 3 Fe(CN) 6 ) as the probe. Although these systems had their roles in characterizing the influences of surfactant adsorption on the interfacial properties of electrode|solution interface and the electrochemical behaviors of the substrates, they suffered from some inevitable disadvantages as the electrochemical platforms for characterizing surfactant adsorption on hydrophobic surfaces, such as the employment of irregular hydrophobic surfaces and the coprecipitation of K 3 Fe(CN) 6 and the positively charged surfactants at high concentrations.…”