A sensitive amperometric bromate sensor based on multi-walled carbon nanotubes/phosphomolybdic acid composite film

A modified composite film electrode of polyoxometalate/carbon nanotubes and its electrocatalytic reduction

“…Among these methods, the multilayer electrochemical self-assembly yields a more uniform and stable product in comparison with the immersion method. Recently, some research has focused on both assembly of POMs on CNTs surfaces and its applications in electrocatalysis [22][23][24][25]. However, the preparation of POMs and CNTs modified electrodes by the electrochemical growth method and its application to electrocatalytic reduction have not been reported to date.…”

Immobilization of [Cu(bpy)2]Br2 complex onto a glassy carbon electrode modified with α-SiMo12O404− and single walled carbon nanotubes: Application to nanomolar detection of hydrogen peroxide and bromate

“…Immobilizations of molecules and biomolecules onto CNTs have been used as new strategy for fabrication sensor and biosensors [32][33][34][35]. Furthermore, the stability and electrochemical super-capacity of polyoxometalates increased when they immobilized onto electrode surfaces modified with CNTs [36][37][38][39][40].…”

Electrochemical behaviour of a new triiron-substituted polyoxomolybdate

“…4a, Table 1), indicate quasi-reversible redox processes for freely diffusing redox couples [47]. However, the slopes of the log-log dependence between the peak currents and the potential scan rate for the peaks of PFe 3 Mo 9 complex (Table 2) reveal that the absorption of the complex on the electrode surface is not negligible (the calculated values of the slopes are significantly higher than 0.5, but lower than 1) [45,[47][48][49]. All these findings indicate that the redox processes involved in the electrochemical activity of PFe 3 Mo 9 are mixed ones, being both diffusion-and surface-controlled [49,50].…”

“…4a) reveals three peak pairs, having the formal standard potential values (Table 1) well-placed in the potential domain corresponding to the electrochemical activity of the complete PMo 12 polyoxometalate. Consequently, the a1/c1-a3/c3 peaks were assigned to the following redox processes [44][45][46] …”