Page 23 - Book of Invited & Keynotes Talks

th
8 Biannual Conference on Chemistry - CHEM 08

Interfacing Nanostructures for Surface Tailoring – Retaining
and Boosting the Charge
Nada F. Atta, Ekram H. El-Ads, Yousef M. Ahmed, Asmaa R.M. El-
Gohary, Dina Amr, Mohamed G.A.E.-K. Hammad, Ahmed Galal
Department of Chemistry, Faculty of Science, University of Cairo
Giza 12613, Egypt.

ABSTRACT
Integrating nano-structured materials in electrochemical systems resulted in new discoveries
and achievements for diverse applications. Among those are energy conversion/storage and
sensing technologies. The choice of interacting nano-materials in a hybrid/composite regime
proved crucial for the success of transducing electrical charge and its retention through
interfaced structures. Among the materials used in this respect are inorganic nanoparticles,
polymer films, self-assembled monolayers, carbon nanotubes, graphene/graphene oxide,
etc.
We will present and discuss two models: the first is based on graphene-inorganic oxides for
enhancing charge storage; the second is based on host-guest interactions for electrochemical
sensing technology. For instance, incorporation of redox systems in the carbon-based
system allows an “add-on” module to the electrical charge capacity for a given energy
storage device. In another model, the hierarchical structure depended on chemical affinity
between an immobilized “host” in the composite and an interacting organic molecule at the
interface. Structural and morphological interrelations between the surface components and
its performance for charge delivery will be also presented.

References
1. An Efficient and Durable Electrocatalyst for Hydrogen Production Based on Earth-
Abundant Oxide-Graphene Composite. Ahmed Galal, Hagar K. Hassan, Nada F.
Atta, Timo Yacob. ChemistrySelect, 2, 10261-10270 (2017).
2. Energy and cost-efficient nano-Ru-based perovskites/RGO composites for
application in high performance supercapacitors. Ahmed Galal, Hagar K. Hassan,
Nada F. Atta, Timo Jacob. J. Colloid Interface Sci., 538, 578-586 (2019).
3. Highly conductive crown ether/carbon nanotubes-ionic liquid crystal composite
based electrochemical sensor for chiral recognition of tyrosine enantiomers. Nada
F. Atta, Ahmed Galal, Yousef M. Ahmed. J. Electrochem. Soc., 166 (8), B623-
B630 (2019).

Talk Date: Monday 2 March 2020

Place: Hall A

Time: 2:30-3:10

BOOK OF INVITED SPEAKERS & KEYNOTES CHEM 08 (2020) Page 23