Display options
Cite
Rodriguez RC, Moncada AB, Acevedo DF, et al. Electroanalysis using modified hierarchical nanoporous carbon materials. Faraday Discuss. 2013;164:147-73doi: 10.1039/c3fd00018d.
Rodriguez, R. C., Moncada, A. B., Acevedo, D. F., Planes, G. A., Miras, M. C., & Barbero, C. A. (2013). Electroanalysis using modified hierarchical nanoporous carbon materials. Faraday discussions, 164147-73. https://doi.org/10.1039/c3fd00018d
Rodriguez, Rusbel Coneo, et al. "Electroanalysis using modified hierarchical nanoporous carbon materials." Faraday discussions vol. 164 (2013): 147-73. doi: https://doi.org/10.1039/c3fd00018d
Rodriguez RC, Moncada AB, Acevedo DF, Planes GA, Miras MC, Barbero CA. Electroanalysis using modified hierarchical nanoporous carbon materials. Faraday Discuss. 2013;164:147-73. doi: 10.1039/c3fd00018d. PMID: 24466663.
Copy Download .nbib Format: NLM
Share it on

Faraday Discuss. 2013;164:147-73. doi: 10.1039/c3fd00018d.

Electroanalysis using modified hierarchical nanoporous carbon materials.

Faraday discussions

Rusbel Coneo Rodriguez, Angelica Baena Moncada, Diego F Acevedo, Gabriel A Planes, Maria C Miras, Cesar A Barbero

Affiliations

  1. Chemistry Department, National University of Rio Cuarto (UNRC), 5800-Rio Cuarto, Argentina.

PMID: 24466663 DOI: 10.1039/c3fd00018d

Abstract

The role of the electrode nanoporosity in electroanalytical processes is discussed and specific phenomena (slow double layer charging, local pH effects) which can be present in porous electrode are described. Hierarchical porous carbon (HPC) materials are synthesized using a hard template method. The three dimensional carbon porosity is examined using scanning electron microscopy on flat surfaces cut using a focused ion beam (FIB-SEM). The electrochemical properties of the HPC are measured using cyclic voltammetry, AC impedance, chronoamperometry and Probe Beam Deflection (PBD) techniques. Chronoamperometry measurements of HPC seems to fit a transmission line model. PBD data show evidence of local pH changes inside the pores, during double layer charging. The HPC are modified by in situ (chemical or electrochemical) formation of metal (Pt/Ru) or metal oxide (CoOx, Fe3O4) nanoparticles. Additionally, HPC loaded with Pt decorated magnetite (Fe3O4) nanoparticles is produced by galvanic displacement. The modified HPC materials are used for the electroanalysis of different substances (CO, O2, AsO3(-3)). The role of the nanoporous carbon substrate in the electroanalytical data is evaluated.

Publication Types