Abstract:
Recently, the development of a unique class of layered silicate nanomaterials has attracted
considerable interest for treatment of wastewater. Clean water is an essential commodity for healthier
life, agriculture and a safe environment at large. Layered double hydroxides (LDHs) and other clay
hybrids are emerging as potential nanostructured adsorbents for water purification. These LDH
hybrids are referred to as hydrotalcite-based materials or anionic clays and promising multifunctional
two-dimensional (2D) nanomaterials. They are used in many applications including photocatalysis,
energy storage, nanocomposites, adsorption, di usion and water purification. The adsorption and
di usion capacities of various toxic contaminants heavy metal ions and dyes on di erent unmodified
and modified LDH-samples are discussed comparatively with other types of nanoclays acting as
adsorbents. This review focuses on the preparation methods, comparison of adsorption and di usion
capacities of LDH-hybrids and other nanoclay materials for the treatment of various contaminants
such as heavy metal ions and dyes.
