Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 17, Pages 8725-8734Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp200465n
Keywords
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Funding
- Environmental Protection Agency Ireland
- Irish Government
- Science Foundation Ireland through Tyndall National Institute, University College Cork
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Copper-based hierarchical micro/nanostructures were prepared using a novel electrochemical route on polypyrrole-polystyrene sulfonate (PPy-PSS) thin films. The resulting structures are composed of copper hydroxysulfates, as confirmed by the electrochemical, spectroscopic, and X-ray diffraction characterization. The electrochemistry of the film is a key factor in the overall deposition of the micro/nanostructures. The PPy-PSS films capture cations from the copper sulfate electrolyte solution and facilitate the reduction of dissolved oxygen to hydroxide ions. The system then acts like a nanoreactor as the Cu2+ and OH- ions are concentrated on the polymer surface, which in the presence of the SO42- ions from the electrolyte solution results in the electrocrystallization of the copper hydroxysulfates hierarchical structures.
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