title: A facile and environmentally friendly NaCl nonaqueous ionic liquid route to prepare crystalline β-CaSiO3 nanowires.
abstract: We described an environmentally friendly and facile NaCl nonaqueous ionic liquid route for the first time to synthesize β-CaSiO3 nanowires. β-CaSiO3 nanowires were prepared by annealing precursor calcium silicate hydrate (CSH) nanostructures in NaCl nonaqueous ionic liquid, in which the precursor CSH nanostructures were first prepared by a facile one-step, solid state reaction, ground with both NaCl and surfactant nonyl phenyl ether (9) (NP-9), and heated at 850 °C for 2 h. β-CaSiO3 nanowires were characterized by XRD, TEM and HRTEM. The comparative experiments have been conducted systemically to investigate the growth mechanism of β-CaSiO3 nanowires, and the roles of salt NaCl nonaqueous ionic liquid and NP-9 on the formation of β-CaSiO3 nanowires. The results demonstrated that both salt NaCl nonaqueous ionic liquid and surfactant NP-9 played key roles on the formation of β-CaSiO3 nanowires. A rational growth mechanism of β-CaSiO3 nanowires has been proposed on the basis of experimental results.
authors.affiliation: School of Science, Minzu University of China, Beijing 100081, China. wzhwang@aphy.iphy.ac.cn
authors.forename: Wenzhong
authors.initials: W
authors.lastname: Wang
authors.forename: Suyun
authors.initials: S
authors.lastname: Zhang
authors.forename: Lijuan
authors.initials: L
authors.lastname: Wang
authors.forename: Honglong
authors.initials: H
authors.lastname: Shi
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D003460:Crystallization; D055772:Green Chemistry Technology / Q000379:methods*; D052578:Ionic Liquids / Q000737:chemistry*; D053758:Nanoparticles / Q000648:ultrastructure; D043942:Nanotubes / Q000648:ultrastructure; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D017640:Silicates / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D017610:Calcium Compounds; D052578:Ionic Liquids; D017640:Silicates; D012965:Sodium Chloride; C031293:calcium silicate