title: Ionic liquids-water interfacial preparation of triangular Ag nanoplates and their shape-dependent antibacterial activity.
abstract: As a class of green and designable solvents, ionic liquids (ILs) have been used extensively in inorganic synthesis. In those schemes, ILs were usually used as reaction media to replace water and organic solvents, and/or used as stabilizer and capping agents to act like an amphiphilic molecule or polymer. However, the unique properties of ILs were not fully utilized in the area of material preparation. In this study, a new protocol of "ILs-water interfacial synthesis" was developed and used for the preparation of Ag nanomaterials. Taking the advantage of tunable property of ILs-water interface, Ag nanomaterials with different morphology such as triangular nanoplates, polygonal nanoplates, and nanoparticles could be facilely obtained. Growth mechanism of the triangular Ag nanoplates has been investigated from structural characterization and molecular dynamics (MD) simulation. It was shown that growth of the nanoplates was under kinetic control mainly due to high viscosity and ionicity of the ILs. Furthermore, the antimicrobial performance of these Ag samples was tested to study the influence of shape of the Ag nanomaterials on the antimicrobial activity and the related antimicrobial mechanism. The results suggested that the efficient antimicrobial activity of the triangular Ag nanoplates was ascribed to their sharp corners and edges and large areas of active (111) crystal plane, which leads to the higher amount of leaching Ag(+) ion.
authors.affiliation: Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China; School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, PR China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Lu
authors.affiliation: School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, PR China.
authors.forename: Kaisheng
authors.initials: K
authors.lastname: Yao
authors.affiliation: Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, PR China. Electronic address: jwang@henannu.edu.cn.
authors.forename: Jianji
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors.forename: Jiongliang
authors.initials: J
authors.lastname: Yuan
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D052578:Ionic Liquids / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures; D012834:Silver / Q000737:chemistry* / Q000494:pharmacology; D014867:Water / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D052578:Ionic Liquids; D014867:Water; D012834:Silver
keywords: Ag nanoplates; Antibacterial activity; Interfacial preparation; Ionic liquids; Kinetic control; Molecular dynamics simulation