Surfactant-templated sol–gel silica thin films bearing 5-mercapto-1-methyl-tetrazole on carbon electrode for Hg(II) detection

Electrode Materials (Bulk Materials and Modification)

“…was found important for improving both the capacity and the selectivity of the accumulation process, which can be exploited for environmental sensing. 621 Examples of electroanalysis using electrodes modified by mesoporous hybrid films have been reported for the detection of various metal species, such as Ag(I), 622 Hg(II), 623 Pb (II) 624 or Cu(II). 599 The typical experiment involves the preconcentration of the analyte in the mesostructured hybrid material, before its desorption/reduction in an appropriate detection medium, and subsequent electroanalysis, most often by stripping voltammetry.…”

Amino‐Containing Ultrafine Organosilica‐Nanoparticle‐Modified Au Electrode for the Determination of Cu(II) Ions

“…With the development of the chemically modified electrode, the electroanalysis application of organic/inorganic hybrids silica modified electrodes with functional group, such as aminoor thiol functional group, is now well-established in preconcentration analysis, electrocatalysis and biosensors [6][7][8][9][10], due to its large surface area and ordered porous structure. Organosilanes with functional groups are covalently linked on the surface either by post-synthetic grafting [11][12][13] or by co-condensation [14][15][16]. For post-synthetic grafting, a complicated chemical process was needed, and the amount and location of the incorporated functional group is difficult to control.…”

Electrochemical sensors and devices for heavy metals assay in water: the French groups' contribution

“…Whereas these films have been prepared most of the time by a classical surfactant-templated synthesis (Etienne et al, 2007; Sanchez and Walcarius, 2010) an original electrochemically-induced sol-gel deposition has been also reported (Walcarius and Sibottier, 2005) (Figure 4). All these films were functionalized either by thiol or amine groups.…”