Cadmium-Aluminum Layered Double Hydroxide Microspheres for Photocatalytic CO2Reduction

Daniel Saliba, Alaa Ezzeddine, Rachid Sougrat, Niveen M. Khashab, Mohamad Hmadeh, Mazen Al-Ghoul

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


We report the synthesis of cadmium-aluminum layered double hydroxide (CdAl LDH) using the reaction-diffusion framework. As the hydroxide anions diffuse into an agar gel matrix containing the mixture of aluminum and cadmium salts at a given ratio, they react to give the LDH. The LDH self-assembles inside the pores of the gel matrix into a unique spherical-porous shaped microstructure. The internal and external morphologies of the particles are studied by electron microscopy and tomography revealing interconnected channels and a high surface area. This material is shown to exhibit a promising performance in the photoreduction of carbon dioxide using solar light. Moreover, the palladium-decorated version shows a significant improvement in its reduction potential at room temperature. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)800-805
Number of pages6
Issue number8
StatePublished - Mar 29 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: DS and MG gratefully acknowledge the funding provided by the American University of Beirut Research Board and by the Lebanese National Council for Scientific Research (LCNSR). MH acknowledges the funding provided by the Masri institute at AUB (#102882). The authors are grateful to Professor Geoffrey A. Ozin laboratory at University of Toronto for providing access to their gas phase photoreactors setup. We also thank Miss Jia Jia, Abdinoor Jelle, and Mr. Kristian Elchami at GAO group for their assistance in the photocatalytic tests.


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