Erratum: Characterization of nanostructured PbO2–PANi composite materials synthesized by combining electrochemical and chemical methods

Abstract

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Nanostructured PbO 2 -PANi composite materials for electrocatalytic oxidation of methanol in acidic sulfuric medium

“…The data given on spectra from figure 4 and table 1 showed that all regarded composites contain PANi owing to vibration signals of benzoid and quinoid ring as well as some main groups similar to those reported in literature [8,12,13]. It explained that PANi in emeraldine salt form co-existed in composite lattice.…”

“…The obtained oxidation current Δi for methanol in this research was until 85 mA cm −2 (in the case only by cyclic voltammetry), twice to three times as high as that one in our previous report [8] owing to combining chemical and pulsed current methods (only until 30 mA cm −2 ). This explains how PANiPbO 2 composites prepared by combining chemical and cyclic voltammetric methods can more positively catalyse for methanol oxidation than those by chemical and pulsed current methods.…”

“…As reported in [7,8], the electro-oxidation of methanol on the surface of anodic PbO 2 -PANi composites can occur following the reaction:…”

“…Nanotechnol. was immersed into acidic aniline solution to form composite of PbO 2 -PANi ( figure 1(c) It can be explained that aniline has converted to anilinume cation radical which can begin polymerization reaction leading to PANi product on the surface, while Pb 2+ in the PANi lattice can be solved becauce of using 0.1 M HNO 3 as an electrolyte [8]. Figure 1(b) represents PbO 2 -PANi prepared by cyclic voltammetry showed a mix clearly of both PANi and lead dioxide in closed fine texture of uniform structure which is evidenced by TEM images in figure 2(c).…”

“…The hybrid composites from polyaniline (PANi) and different metal oxides like as TiO 2 , SnO 2 , MnO 2 were investigated for the applications to sensor, electrocatalysis [5][6][7]. In the previous paper [8] we have prepared PbO 2 -PANi composite by chemical und pulsed current method, however, methanol oxidation current density was limited only until 30 mA cm −2 . To improve the electrocatalytic ability of this composite for methanol, another combining method based on chemistry and cyclic voltammetry must be used.…”