Removal of Cu(II) from dilute solutions at polypyrrole modified electrodes

Piatnicki, Clarisse Maria Sartori; Azambuja, Denise Schermann; Hasse, Eloisa Elena Schwartz; Castagno, K. R. L.; Guterres, Sheila Barreto

doi:10.1081/ss-120003523

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…For electroanalytical purposes, the effect of the electrodeposition conditions of polypyrrole films on RVCe substrates on the remediation of Cr(VI) in aqueous media has been analyzed [10]. Composites of RVCe/polypyrrole have been prepared either to recover Cu(II) from dilute acidic solutions [11] or to separate and recover gold and other metal ions with a high degree of efficiency and selectivity [12]. RVCe electrodes have also been employed as host substrates for the electrochemical deposition of heparin-doped polypyrrole, resulting in a new method for the purification of thrombin [13].…”

Section: Introductionmentioning

confidence: 99%

Electropolymerization of polyaniline on high surface area carbon substrates

Dalmolin

Canobre

Biaggio

et al. 2005

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Electropolymerization of polyaniline on high surface area carbon substrates

Dalmolin

Canobre

Biaggio

et al. 2005

Journal of Electroanalytical Chemistry

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“…In this connection, polypyrrole modified electrodes, obtained by electrochemical oxidation of pyrrole onto an electrode substrate 10,11 , have been employed in the removal of metallic ions [12][13][14] from aqueous solutions. Besides its chemical an thermal stability, the optical and electrochemical properties of polypyrrole may be easily changed by choosing the appropriated experimental synthesis conditions 15 .…”

Section: Introductionmentioning

confidence: 99%

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Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes

et al. 2001

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The development of simple methods for removal of heavy metals from aqueous samples is a relevant field of research. In this connection, the electrodeposition of the Cd+2 ion, one of the most toxic species for animals and human beings, was investigated in aerated pH 4.8 sulfuric-sulfate solutions. In potentiostatic conditions, the maximum rate of cadmium deposition at a neutral polypyrrole (PPy0) coated reticulated vitreous carbon (RVC) working electrode occurs at -3.0 V vs. the saturated calomel reference electrode (SCE). Moreover, the conversion rate depends both on the applied potential and on the mass transport regime, and, for solutions containing 10 mg L-1 of Cd2+, the highest removal efficiency achieved is 84% after 90 min of electrolysis. The concentration decay of the Cd+2 ion in the solution was monitored by anodic stripping voltammetry (ASV) at a hanging mercury drop electrode. Besides, metallic cadmium deposited onto the polypyrrole modified RVC electrode was evidenced by Scanning Electron Microscopy (SEM) analysis using the backscattered electron image (BEI) technique and by Energy Dispersive Spectrometry (EDS)

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“…Reduction of chromate by conductive ppy polymers has been extensively studied in many previous articles [4][5][6][7][8][9][10]. Other heavy metals such as copper, silver, cadmium, and gold cyanide can be effectively removed from outlet wastewater using ppy-modified electrodes [11][12][13][14][15]. While the effectiveness of these conductive polymers for heavy metals removal have been proved in these reports, no detailed study has so far characterized this new material and clarified its advantage for electrochemical treatment.…”

Section: Introductionmentioning

confidence: 96%

Comparative investigation on electroreduction of Cu(II) using polypyrrole electrode and stainless steel electrode

Tian

Huang

et al. 2009

J Appl Electrochem

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The electroreduction of Cu(II) by polypyrrole (ppy)-modified electrode and stainless steel (SS) electrode under potentiostatic and potentiodynamic conditions was studied. Compared with SS electrode, ppy-modified electrode presented higher Cu(II) removal ability since it acted as electrocatalyst during reduction process. Extremely high current efficiency was achieved on ppy-modified electrode due to the inhibition effect on the side-reaction of hydrogen evolution, exhibiting important advantage over other electrode materials for heavy metal treatment. Conductivities of ppy films after different treatments were detected to evaluate the stability of the polymer.

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Removal of Cu(II) from dilute solutions at polypyrrole modified electrodes

Cited by 13 publications

References 27 publications

Electropolymerization of polyaniline on high surface area carbon substrates

Electropolymerization of polyaniline on high surface area carbon substrates

Removal of Cd+2 from aqueous solutions onto polypyrrole coated reticulated vitreous carbon eletrodes

Comparative investigation on electroreduction of Cu(II) using polypyrrole electrode and stainless steel electrode

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