Ionic liquid and nanoparticle hybrid systems: Emerging applications

• Published in: Advances in colloid and interface science Vol. 244; pp. 54 - 70
• Main Authors: He, Zhiqi, Alexandridis, Paschalis
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.06.2017
• Subjects: Catalysis; Electrochemistry; Ionic liquid; Nanoparticle; Sensor; Separations; Electrochemistry; Catalysis; Nanoparticle; Ionic liquid; Sensor; Separations
• ISSN: 0001-8686; 1873-3727; 1873-3727
• DOI: 10.1016/j.cis.2016.08.004

Having novel electronic and optical properties that emanate from their nano-scale dimensions, nanoparticles are central to numerous applications. Ionic liquids can confer to nanoparticle chemical protection and physicochemical property enhancement through intermolecular interactions and can consequently improve the stability and reusability of nanoparticle for various operations. With an aim to combine the novel properties of nanoparticles and ionic liquids, different structures have been generated, based on a balance of several intermolecular interactions. Such ionic liquid and nanoparticle hybrids are showing great potential in diverse applications. In this review, we first introduce various types of ionic liquid and nanoparticle hybrids, including nanoparticle colloidal dispersions in ionic liquids, ionic liquid-grafted nanoparticles, and nanoparticle-stabilized ionic liquid-based emulsions. Such hybrid materials exhibit interesting synergisms. We then highlight representative applications of ionic liquid and nanoparticle hybrids in the catalysis, electrochemistry and separations fields. Such hybrids can attain better stability and higher efficiency under a broad range of conditions. Novel and enhanced performance can be achieved in these applications by combining desired properties of ionic liquids and of nanoparticles within an appropriate hybrid nanostructure. [Display omitted] •Ionic liquids can enhance the physical and chemical properties of nanoparticles.•Ionic liquid-stabilized nanoparticle catalysts have improved efficiency and recycleability.•Ionic liquids can improve diffusivity, electrical conductivity, and electrochemical stability.•Nanoparticles and ionic liquids in membranes can improve selectivity and separation efficiency.