Synthesis Of Pb Film

In this study, multiwalled carbon nanotubes@poly(p-phenylenediamine)-prussian blue (MWCNTs@PpPD-PB) nanocomposites were synthesized and used for the nonenzymatic electrochemical detection of hydrogen peroxide (H2O2). The PpPD layer also helps the MWCNTs to be dispersed in the water together with the PB formation and fixing on the surface of the MWCNTs. Moreover, PpPD, a conductive polymer, increases the electronic conductivity and stability of MWCNTs. By combining the selectivity and catalytic capacity of PB for H2O2, a synergistic effect was observed for the H2O2 detection. The morphology and chemical composition of the MWCNTs@PpPD-PB nanocomposites were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, and X-ray …show more content…
[20], and various methods have been used to fabricate different PB-based hybrids for PB-modified electrode so far. Almost all the procedures adopted for the PB deposition on electrode surface are based on electrochemical methods [21], involving a constant applied potential [22–24], or potential cycling [25,26] in a solution of ferric and ferricyanide ions. Another approach for the PB deposition is based on the chemical synthesis without the need for an electrochemical step. The chemical procedure can be performed in situ by different ways from the solutions of Fe2+ ions and [Fe(CN)6]3- ions [27], Fe3+ and [Fe(CN)6]4- [28,29], or from Fe3+ and [Fe(CN)6]3- [30–32] in the presence of H2O2 and pre-synthesis supported on a substrate followed by the entrapment inside the bulk of composite electrodes [33]. In the former procedure that used electrochemical methods, the main disadvantages are lower solubility, difficulty of mass production, and lack of reproducibility. In contrast, using in situ chemical synthesis, PB can be homogenously soluble in common solvents, making a uniform dispersion, thus overcoming the problems of chemical synthesis