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Electro-synthesis of novel nanostructured PEDOT films and their application as catalyst support.

Zhou C, Liu Z, Yan Y, Du X, Mai YW, Ringer S - Nanoscale Res Lett (2011)

Bottom Line: The results indicate that the hierarchical structured PEDOT film doped with nitric ions displays a 'lunar craters' porous morphology consisting of PEDOT nano-sheets with a thickness of less than 2 nm.The effect of counter ions on the electro-polymerization, the electrochemistry, and the morphology of the polymer film was studied.Compared with PEDOT film doped with nitric acid, PEDOT film deposited in the presence of chlorine ions shows irregular morphology and less electrochemical activity.

View Article: PubMed Central - HTML - PubMed

Affiliation: Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006, Australia. zongwen.liu@sydney.edu.au.

ABSTRACT
Poly(3,4-ethylenedioxythiophene) (PEDOT) films doped with nitric and chlorine ions have been electrochemically deposited simply by a one-step electrochemical method in an aqueous media in the absence of any surfactant. The fabricated PEDOT films were characterized by scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The results indicate that the hierarchical structured PEDOT film doped with nitric ions displays a 'lunar craters' porous morphology consisting of PEDOT nano-sheets with a thickness of less than 2 nm. The effect of counter ions on the electro-polymerization, the electrochemistry, and the morphology of the polymer film was studied. Compared with PEDOT film doped with nitric acid, PEDOT film deposited in the presence of chlorine ions shows irregular morphology and less electrochemical activity. The specific nanostructure of the polymer was further studied as catalyst support for platinum nanoparticles to methanol electro-oxidation.

No MeSH data available.


Related in: MedlinePlus

Chronocoulemetry of PEDOT deposition on Pt in 0.01 M EDOT + 0.1 M KNO3 and 0.01 M EDOT + 0.1 M KCl.
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Figure 2: Chronocoulemetry of PEDOT deposition on Pt in 0.01 M EDOT + 0.1 M KNO3 and 0.01 M EDOT + 0.1 M KCl.

Mentions: PEDOT films doped with chlorine and nitric ions were electro-synthesized with the chronocoulometry method, as shown in Figure 2. As the charges consumed implied the amount of the electrical conductive polymer on the electrode, the same charge was consumed to fabricate the same amount of polymer doped with different ions. The charges were consumed more quickly in the presence of nitric ions than those in the presence of chlorine ions, indicating the faster deposition of the PEDOT doped with nitric ions. With the electro-polymerization proceeding, a homogeneous deep blue polymer film doped with nitric ions was deposited on the Pt electrode surface. Different from the color of the PEDOT-NO3, PEDOT-Cl film is brown. The electrochemical behaviors of the PEDOT films with different doping ions were also investigated. As shown in Figure 3, the current of PEDOT-Cl is much less than that of PEDOT-NO3, indicating that the PEDOT doped with nitric ions is more electro-active than those doped with chlorine ions, which is in consistence with the above CV and chronocoulometry results.


Electro-synthesis of novel nanostructured PEDOT films and their application as catalyst support.

Zhou C, Liu Z, Yan Y, Du X, Mai YW, Ringer S - Nanoscale Res Lett (2011)

Chronocoulemetry of PEDOT deposition on Pt in 0.01 M EDOT + 0.1 M KNO3 and 0.01 M EDOT + 0.1 M KCl.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211454&req=5

Figure 2: Chronocoulemetry of PEDOT deposition on Pt in 0.01 M EDOT + 0.1 M KNO3 and 0.01 M EDOT + 0.1 M KCl.
Mentions: PEDOT films doped with chlorine and nitric ions were electro-synthesized with the chronocoulometry method, as shown in Figure 2. As the charges consumed implied the amount of the electrical conductive polymer on the electrode, the same charge was consumed to fabricate the same amount of polymer doped with different ions. The charges were consumed more quickly in the presence of nitric ions than those in the presence of chlorine ions, indicating the faster deposition of the PEDOT doped with nitric ions. With the electro-polymerization proceeding, a homogeneous deep blue polymer film doped with nitric ions was deposited on the Pt electrode surface. Different from the color of the PEDOT-NO3, PEDOT-Cl film is brown. The electrochemical behaviors of the PEDOT films with different doping ions were also investigated. As shown in Figure 3, the current of PEDOT-Cl is much less than that of PEDOT-NO3, indicating that the PEDOT doped with nitric ions is more electro-active than those doped with chlorine ions, which is in consistence with the above CV and chronocoulometry results.

Bottom Line: The results indicate that the hierarchical structured PEDOT film doped with nitric ions displays a 'lunar craters' porous morphology consisting of PEDOT nano-sheets with a thickness of less than 2 nm.The effect of counter ions on the electro-polymerization, the electrochemistry, and the morphology of the polymer film was studied.Compared with PEDOT film doped with nitric acid, PEDOT film deposited in the presence of chlorine ions shows irregular morphology and less electrochemical activity.

View Article: PubMed Central - HTML - PubMed

Affiliation: Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW 2006, Australia. zongwen.liu@sydney.edu.au.

ABSTRACT
Poly(3,4-ethylenedioxythiophene) (PEDOT) films doped with nitric and chlorine ions have been electrochemically deposited simply by a one-step electrochemical method in an aqueous media in the absence of any surfactant. The fabricated PEDOT films were characterized by scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The results indicate that the hierarchical structured PEDOT film doped with nitric ions displays a 'lunar craters' porous morphology consisting of PEDOT nano-sheets with a thickness of less than 2 nm. The effect of counter ions on the electro-polymerization, the electrochemistry, and the morphology of the polymer film was studied. Compared with PEDOT film doped with nitric acid, PEDOT film deposited in the presence of chlorine ions shows irregular morphology and less electrochemical activity. The specific nanostructure of the polymer was further studied as catalyst support for platinum nanoparticles to methanol electro-oxidation.

No MeSH data available.


Related in: MedlinePlus