One-Pot Synthesis of Pt–Fe for EOR: Effect of pH
- 1University of Naples Federico II , , P.le Tecchio 80 , ,
Abstract
The development of efficient electrocatalysts for the ethanol oxidation reaction (EOR) remains a major challenge for direct ethanol fuel cells (DEFCs) due to slow kinetics and catalyst poisoning by reaction intermediates. Herein, Pt/C and Pt–Fe/C catalysts were prepared via a one-pot polyol synthesis, and the effect of pH on Fe incorporation and catalytic performance was investigated. X-ray diffraction showed lattice contraction in Pt–Fe catalysts, confirming Fe incorporation, which was more pronounced under alkaline conditions. Electrochemical measurements demonstrated a strong dependence on both Fe addition and pH. Pt–Fe/C at pH 11.4 achieved a mass activity density of 850 A/gPt, outperforming not only Pt–Fe/C neutral and Pt/C but also the commercial Pt/C catalyst at 20 mV/s. Moreover, a lower onset potential (0.479 V) and a higher If/Ib ratio (1.9) indicate faster reaction kinetics and qualitatively suggest tolerance to adsorbed intermediates. The enhanced performance is attributed to the synergistic effect of Fe incorporation through electronic and bifunctional mechanisms.
BibTeX
@article{francia2026onepot,
title = {{One-Pot Synthesis of Pt–Fe for EOR: Effect of pH}},
author = {Marco Antonio Di Francia and Maria Portarapillo and Antonella Gianna Tesone and Almerinda Di Benedetto and Giuseppina Luciani},
journal = {ACS Omega},
year = {2026},
month = oct,
doi = {10.1021/acsomega.6c09204},
url = {https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09204/5453581/One-Pot-Synthesis-of-Pt-Fe-for-EOR-Effect-of-pH},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - One-Pot Synthesis of Pt–Fe for EOR: Effect of pH
AU - Marco Antonio Di Francia
AU - Maria Portarapillo
AU - Antonella Gianna Tesone
AU - Almerinda Di Benedetto
AU - Giuseppina Luciani
PY - 2026
DA - 2026/10/19
JO - ACS Omega
DO - 10.1021/acsomega.6c09204
UR - https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c09204/5453581/One-Pot-Synthesis-of-Pt-Fe-for-EOR-Effect-of-pH
AB - The development of efficient electrocatalysts for the ethanol oxidation reaction (EOR) remains a major challenge for direct ethanol fuel cells (DEFCs) due to slow kinetics and catalyst poisoning by reaction intermediates. Herein, Pt/C and Pt–Fe/C catalysts were prepared via a one-pot polyol synthesis, and the effect of pH on Fe incorporation and catalytic performance was investigated. X-ray diffraction showed lattice contraction in Pt–Fe catalysts, confirming Fe incorporation, which was more pronounced under alkaline conditions. Electrochemical measurements demonstrated a strong dependence on both Fe addition and pH. Pt–Fe/C at pH 11.4 achieved a mass activity density of 850 A/gPt, outperforming not only Pt–Fe/C neutral and Pt/C but also the commercial Pt/C catalyst at 20 mV/s. Moreover, a lower onset potential (0.479 V) and a higher If/Ib ratio (1.9) indicate faster reaction kinetics and qualitatively suggest tolerance to adsorbed intermediates. The enhanced performance is attributed to the synergistic effect of Fe incorporation through electronic and bifunctional mechanisms.
SN - 2470-1343
ER -