Page 67 - Book of Abstracts 2020

th
8 Biannual Conference on Chemistry - CHEM 08

An Efficient Pt-Based Nanocatalyst for Formic Acid

Electro-Oxidation: Poisoning Mitigation

1
2
1
Yaser M. Asal , Islam M. Al-Akraa , Ahmad M. Mohammad , S.S. Abd
3
El Rehim
1 Department of Chemical Engineering, Faculty of Engineering, The British
University in Egypt, Cairo 11837, Egypt. Chemistry Department, Faculty of
2
Science, Cairo University, Cairo 12613, Egypt. Chemistry Department, Faculty
3
of Science, Ain Shams University, Cairo, Egypt. Email:
yasser.mohamed@bue.edu.eg

ABSTRACT

A new synthetic methodology replacing the typical sequential “layer-by-
layer” immobilization and employing instead a “simultaneous co-
electrodeposition” protocol has been proven eminent for assembling
efficient nanoelectrocatalysts for formic acid (FA) electro−oxidation
(FAO) . This strategy is successful to integrate homogeneously Pt
1
nanoparticles (nano-Pt; the essential component for FA
adsorption/oxidation) with metal/metal oxide in a single blend surpassing
the ideal catalytic activity of Pt substrates and realizing a minute
negligible CO poisoning level. The molar ratio of the catalyst’s ingredients
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in the deposition bath is critical in identifying the catalyst's activity .
Several techniques including cyclic voltammetry, chronoamperometry,
electrochemical impedance spectroscopy, field-emission scanning
electron microscopy, energy dispersive X-ray spectroscopy and X-ray
diffraction are all combined to report the catalyst’s activity evaluating its
morphology, composition, and structure. It is believed that adjusting the
catalyst’s composition can preferably act against the adsorption of
poisoning CO intermediate and/or support electronically the desired (low
overpotential) direct dehydrogenation pathway of FAO.

References:
1. Asal, Y. M.; Al-Akraa, I. M.; Mohammad, A. M.; El-Deab, M. S., Design of
efficient bimetallic Pt–Au nanoparticle-based anodes for direct formic acid
fuel cells. International Journal of Hydrogen Energy 2019, 44 (7), 3615-3624.
2. Asal, Y. M.; Al-Akraa, I. M.; Mohammad, A. M.; El-Deab, M. S., A
competent simultaneously co-electrodeposited Pt-MnOx nanocatalyst for
enhanced formic acid electro-oxidation. Journal of the Taiwan Institute of
Chemical Engineers 2019, 96, 169-175.

BOOK OF ABSTRACTS CHEM 08 (2020) Page 66