Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations
This paper reports on the quantitative assessment of the oxygen reduction reaction (ORR) electrocatalytic activity of electrodeposited Mn/polypyrrole (PPy) nanocomposites for alkaline aqueous solutions, based on the Rotating Disk Electrode (RDE) method and accompanied by structural characterizations...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
|
| Series: | Journal of Analytical Methods in Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2016/2030675 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832554277745197056 |
|---|---|
| author | Patrizia Bocchetta Carolina Ramírez Sánchez Antonietta Taurino Benedetto Bozzini |
| author_facet | Patrizia Bocchetta Carolina Ramírez Sánchez Antonietta Taurino Benedetto Bozzini |
| author_sort | Patrizia Bocchetta |
| collection | DOAJ |
| description | This paper reports on the quantitative assessment of the oxygen reduction reaction (ORR) electrocatalytic activity of electrodeposited Mn/polypyrrole (PPy) nanocomposites for alkaline aqueous solutions, based on the Rotating Disk Electrode (RDE) method and accompanied by structural characterizations relevant to the establishment of structure-function relationships. The characterization of Mn/PPy films is addressed to the following: (i) morphology, as assessed by Field-Emission Scanning Electron Microscopy (FE-SEM) and Atomic Force Microscope (AFM); (ii) local electrical conductivity, as measured by Scanning Probe Microscopy (SPM); and (iii) molecular structure, accessed by Raman Spectroscopy; these data provide the background against which the electrocatalytic activity can be rationalised. For comparison, the properties of Mn/PPy are gauged against those of graphite, PPy, and polycrystalline-Pt (poly-Pt). Due to the literature lack of accepted protocols for precise catalytic activity measurement at poly-Pt electrode in alkaline solution using the RDE methodology, we have also worked on the obtainment of an intralaboratory benchmark by evidencing some of the time-consuming parameters which drastically affect the reliability and repeatability of the measurement. |
| format | Article |
| id | doaj-art-459b56f887e8431591f4a0530d7e1048 |
| institution | Kabale University |
| issn | 2090-8865 2090-8873 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Analytical Methods in Chemistry |
| spelling | doaj-art-459b56f887e8431591f4a0530d7e10482025-02-03T05:51:49ZengWileyJournal of Analytical Methods in Chemistry2090-88652090-88732016-01-01201610.1155/2016/20306752030675Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural CharacterizationsPatrizia Bocchetta0Carolina Ramírez Sánchez1Antonietta Taurino2Benedetto Bozzini3Dipartimento di Ingegneria dell’Innovazione, Università del Salento, Via Monteroni, 73100 Lecce, ItalyCentro de Investigación, Innovación y Desarrollo de Materiales-CIDEMAT, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, ColombiaInstitute for Microelectronics and Microsystems, IMM-CNR, Via Monteroni, 73100 Lecce, ItalyDipartimento di Ingegneria dell’Innovazione, Università del Salento, Via Monteroni, 73100 Lecce, ItalyThis paper reports on the quantitative assessment of the oxygen reduction reaction (ORR) electrocatalytic activity of electrodeposited Mn/polypyrrole (PPy) nanocomposites for alkaline aqueous solutions, based on the Rotating Disk Electrode (RDE) method and accompanied by structural characterizations relevant to the establishment of structure-function relationships. The characterization of Mn/PPy films is addressed to the following: (i) morphology, as assessed by Field-Emission Scanning Electron Microscopy (FE-SEM) and Atomic Force Microscope (AFM); (ii) local electrical conductivity, as measured by Scanning Probe Microscopy (SPM); and (iii) molecular structure, accessed by Raman Spectroscopy; these data provide the background against which the electrocatalytic activity can be rationalised. For comparison, the properties of Mn/PPy are gauged against those of graphite, PPy, and polycrystalline-Pt (poly-Pt). Due to the literature lack of accepted protocols for precise catalytic activity measurement at poly-Pt electrode in alkaline solution using the RDE methodology, we have also worked on the obtainment of an intralaboratory benchmark by evidencing some of the time-consuming parameters which drastically affect the reliability and repeatability of the measurement.http://dx.doi.org/10.1155/2016/2030675 |
| spellingShingle | Patrizia Bocchetta Carolina Ramírez Sánchez Antonietta Taurino Benedetto Bozzini Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations Journal of Analytical Methods in Chemistry |
| title | Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations |
| title_full | Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations |
| title_fullStr | Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations |
| title_full_unstemmed | Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations |
| title_short | Accurate Assessment of the Oxygen Reduction Electrocatalytic Activity of Mn/Polypyrrole Nanocomposites Based on Rotating Disk Electrode Measurements, Complemented with Multitechnique Structural Characterizations |
| title_sort | accurate assessment of the oxygen reduction electrocatalytic activity of mn polypyrrole nanocomposites based on rotating disk electrode measurements complemented with multitechnique structural characterizations |
| url | http://dx.doi.org/10.1155/2016/2030675 |
| work_keys_str_mv | AT patriziabocchetta accurateassessmentoftheoxygenreductionelectrocatalyticactivityofmnpolypyrrolenanocompositesbasedonrotatingdiskelectrodemeasurementscomplementedwithmultitechniquestructuralcharacterizations AT carolinaramirezsanchez accurateassessmentoftheoxygenreductionelectrocatalyticactivityofmnpolypyrrolenanocompositesbasedonrotatingdiskelectrodemeasurementscomplementedwithmultitechniquestructuralcharacterizations AT antoniettataurino accurateassessmentoftheoxygenreductionelectrocatalyticactivityofmnpolypyrrolenanocompositesbasedonrotatingdiskelectrodemeasurementscomplementedwithmultitechniquestructuralcharacterizations AT benedettobozzini accurateassessmentoftheoxygenreductionelectrocatalyticactivityofmnpolypyrrolenanocompositesbasedonrotatingdiskelectrodemeasurementscomplementedwithmultitechniquestructuralcharacterizations |