A Substrate-Integrated and Scalable Templated Approach Based on Rusted Steel for the Fabrication of Polypyrrole Nanotube Arrays

Abstract

We report here a facile, generalizable, and entirely scalable approach for the fabrication of vertically aligned arrays of Fe(2)O(3)/polypyrrole core-shell nanostructures and polypyrrole nanotubes. Our "all electrochemical" approach is based on the fabrication of α-Fe(2)O(3) nanowire arrays by the simple heat treatment of commodity low carbon steel substrates, followed by electropolymerization of conformal polypyrrole sheaths around the nanowires. Subsequently, electrochemical etching of the nanowires yields large-area vertically aligned polypyrrole nanotube arrays on the steel substrate. The developed methodology is generalizable to functionalized pyrrole monomers and represents a significant practical advance of relevance to the technological implementation of conjugated polymer nanostructures in electrochromics, electrochemical energy storage, and sensing.

The role of (photo)electrochemistry in the rational design of hybrid conducting polymer/semiconductor assemblies: From fundamental concepts to practical applications

“…Finally, at rather high concentrations of pyrrole (~500 mM), fast and uncontrolled electropolymerization leads not only to extensive aggregation of polymer-coated nanowires, but also to the formation of large globular PPy particles attached to the nanowire surface(Fig. 11)[155].…”

Orthogonal Wettability of Hierarchically Textured Metal Meshes as a Means of Separating Water/Oil Emulsions

“…A facile and scalable method for rapidly generating ZnO tetrapods was developed based on the rapid air oxidation of Zn foils . Specifically, Zn metal sheets (99% purity on metals basis, McMaster‐Carr) were cut into smaller substrates that were ca.…”

Conducting Polymers

“…Hydrous RuO 2 on PANI-Nafion matrix was deposited, which also showed high capacitance [1038]. The developed methodology is generalizable to functionalized pyrrole monomers and represents a significant practical advance of relevance to the technological implementation of conjugated polymer nanostructures in electrochromics, electrochemical energy storage, and sensing [1054]. Composite electroactive films consisting of poly (3,4-ethylenedioxythiophene) and amorphous tungsten oxide, WO 3 /H (x) WO 3 , were fabricated on carbon electrodes through electrodeposition by voltammetric potential cycling in acid solution containing EDOT monomer and sodium tungstate.…”