Title : Engineering layered double hydroxides- based catalysts for photocatalytic water remediation
Solar photocatalytic decontamination, as an environmentally friendly technology, has been regarded as a good approach to eliminate water pollutants. To date, various photocatalysts have been developed for the purpose of water remediation. Layered double hydroxides (LDH) are mesoporous 2D lamellar anionic clays that emerged as very promising candidates for constructing highly efficient semiconducting photocatalysts1.
Heterostructures composed of optical responsive nanounits of LDH and metal plasmonic nanoparticles (MeNP) display increase solar-light harvesting efficiency that is derived from the close conjunction and synergistic interactions between the optical active nanounits. Herein, we report the design, synthesis, unique physical-chemical properties and applications in plasmonic catalysis of LDH (e.g.: ZnAlLDH and MgAlLDH) heterostructured with plasmonic nanoparticles (e.g.: AuNP; AgNP). Advanced characterization techniques (XRD, HRTEM, XPS, FTIR, UV-VIS) have been used to describe the physical-chemical properties and the plasmonic features of MeNP/LDH. Results point that the performances of the photocatalysts to remove toxic compound in water purification treatments by using solar light energy, are due to the congruent role of the plasmonic metal nanoparticles and the anionic clay optical response.
Acknowledgements. This work was supported by the grant of the Romanian National Authority for Scientific Research, CNCS-UEFISCDI, Project number PN-II-ID-PCE-75. R. B and M.C. greatly acknowledge for financial support of an Erasmus grant mobility between Romania and Morocco.
What will audience learn from your presentation?
- Preparation of layered double hydroxides nanomaterials.
- Heterostructures composed by layered double hydroxides and metal nanoparticles (AgNPs).
- Performances of the photocatalysts to remove toxic compound in water purification treatments by using solar light energy.