Recent developments in layer-by-layer assembled systems application in water purification

Electrostatically-based layer-by-layer (LbL) assembly is a versatile surface functionalization technique allowing the construction of complex three-dimensional architectures on virtually any type of material using various combinations of nano-bricks. One of the most promising applications of LbL assembled systems is in water purification. The main two strategies developed in this purpose consist in either enhancing the barrier properties of separation membranes and in the construction of core-shell organic/inorganic sorbents. In this review, the recent achievements in this topic are discussed with respect to the use of LbL-based composites in desalination and removal of heavy metal ions or organic pollutants. Finally, some works dealing with economic aspects of using LbL assemblies for water purification are presented, thus highlighting forthcoming strategies to develop economically-viable materials for such applications. (C) 2020 Elsevier Ltd. All rights reserved.

Automated summary

Electrostatically-based layer-by-layer (LbL) assembly is a versatile surface functionalization technique that allows the construction of complex three-dimensional architectures on various materials, with promising applications in water purification. The main strategies in this field include enhancing the barrier properties of separation membranes and constructing core-shell organic/inorganic sorbents. Recent achievements and studies on the economic aspects of using LbL assemblies for water purification suggest possible development of economically-viable materials for this application in the future.