Imperial College London


Faculty of EngineeringDepartment of Materials

Departmental Research Fellow







Royal School of MinesSouth Kensington Campus





Dr. El-Zoka's research aims at understanding how corrosion reactions could be used in a controlled manner to make functional nanomaterials, for advanced catalytic applications.

Dr. El-Zoka obtained his PhD at the University of Toronto, working on the characterization and functional improvement of nanoporous metals, where he set precedent in enabling atomic resolution characterization of Cu-filled nanoporous gold substrates using atom probe tomography  (DOI: 10.1039/C7NR08206A).

During his postdoctoral fellowship at the Max-Planck-Institut für Eisenforschung GmbH in Dusseldorf, Germany, Dr. El-Zoka pushed forward method development for atom probe tomography analyses of gas-solid and liquid-solid interfaces. A notable advancement was achieved when Dr. El-Zoka published his findings on cryo-atom probe tomography of nanoporous gold filled with water and sodium chloride (DOI: 10.1126/sciadv.abd6324). These findings effectively brought to light APT analyses of frozen liquid/solid interfaces, now known as cryo-APT. 

Dr. El-Zoka recently joined the Department of Materials at Imperial College London, with the aim of starting research activity that combines high resolution cryo-APT characterization and development of cost efficient, high performance nanoporous catalysts.



Favelukis B, Chakrabartty S, Kumar V, et al., 2024, Improved durability of Ti3C2Tz at potentials above the reversible hydrogen electrode by tantalum substitution, Advanced Functional Materials, Vol:34, ISSN:1616-301X

Krämer M, Favelukis B, El-Zoka AA, et al., 2024, Near-atomic-scale perspective on the oxidation of Ti3C2Tx MXenes: insights from atom probe tomography, Advanced Materials, Vol:36, ISSN:0935-9648

Woods EV, Singh MP, Kim S-H, et al., 2023, A versatile and reproducible cryo-sample preparation methodology for atom probe studies, Microscopy and Microanalysis, Vol:29, ISSN:1083-0375, Pages:1992-2003

Woods EV, Kim S-H, El-Zoka AA, et al., 2023, Scalable substrate development for aqueous sample preparation for atom probe tomography, Journal of Microscopy, ISSN:0022-2720

El-Zoka AA, Stephenson LT, Kim S-H, et al., 2023, The fate of water in hydrogen-based iron oxide reduction, Advanced Science, Vol:10, ISSN:2198-3844

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