admium–Aluminum Layered Double Hydroxide Microspheres for Photocatalytic CO2 Reduction

by Saliba, D., Ezzeddine, A., Sougrat, R., Khashab, N. M., Hmadeh, M., Al-Ghoul
Year: 2016


Saliba, D.; Ezzeddine, A.; Sougrat, R.; Khashab, N. M.; Hmadeh, M.; Al-Ghoul, M. Cadmium–Aluminum Layered Double Hydroxide Microspheres for Photocatalytic CO2 Reduction. ChemSusChem 2016, 9, 800-805


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.


Cadmium/Aluminum Carbon Dioxide Layered Double Hydroxide photoreduction reaction diffusion framework