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Palladium dispersed in three-dimensional polyaniline networks as the catalyst for hydrogen peroxide electro-reduction in an acidic medium
- Source :
- RSC Advances. 5:94008-94015
- Publication Year :
- 2015
- Publisher :
- Royal Society of Chemistry (RSC), 2015.
-
Abstract
- A novel Pd/polyaniline/CFC electrode is prepared by electroless deposition of palladium (Pd) onto three-dimensional polyaniline networks. The polyaniline matrix on the carbon fiber cloth (CFC) in the reduction state is electro-synthesized by cyclic voltammetry and has a lower vertex potential of −0.4 V vs. Ag/AgCl. The particle size of the Pd coated on the polyaniline chains is gradiently distributed. The as-prepared Pd/polyaniline/CFC electrode is characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FITR) and X-ray diffraction (XRD). The hydrogen peroxide (H2O2) electro-reduction reaction in H2SO4 solutions on the Pd/polyaniline/CFC electrode is investigated using cyclic voltammetry (CV), linear sweep voltammetry (LSV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS). The results reveal that the electrode exhibited high catalytic activity and excellent stability in the strong oxidizing solution of H2O2 and H2SO4. Polyaniline itself shows electro-catalytic activity towards H2O2 to some extent involving the chemical–electrochemical (C–E) coupling mechanism.
- Subjects :
- Materials science
Polyaniline nanofibers
General Chemical Engineering
Inorganic chemistry
chemistry.chemical_element
General Chemistry
Chronoamperometry
Dielectric spectroscopy
chemistry.chemical_compound
chemistry
Polyaniline
Linear sweep voltammetry
Fourier transform infrared spectroscopy
Cyclic voltammetry
Nuclear chemistry
Palladium
Subjects
Details
- ISSN :
- 20462069
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- RSC Advances
- Accession number :
- edsair.doi...........892444af295a2fd506a35960ddeb739a
- Full Text :
- https://doi.org/10.1039/c5ra19478d