title: Graphene confinement effects on melting/freezing point and structure and dynamics behavior of water.
abstract: In this work, the melting/freezing point of confined water between two graphene sheets was calculated from the direct coexistence of the solid-liquid interface. Also, molecular dynamics simulation of confined liquid water-ice between two graphene sheets was applied. The phase transition temperature of the confined ice-water mixture was calculated as 240K that was 29K less than the non-confined ice-water system. In order to study the behavior of water molecules at different distances from the graphene sheets, 5 regions were provided using some imaginary planes, located between two graphene sheets. The obtained simulation results showed that water molecules located in the region near each graphene sheet with the thickness of 2nm had a different behavior from other water molecules located in other regions. The results demonstrated that water molecules in the vicinity of graphene sheets had more mean square displacements than those in the middle regions.
authors.affiliation: Department of Physical Chemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran. Electronic address: foroutan@ut.ac.ir.
authors.forename: Masumeh
authors.initials: M
authors.lastname: Foroutan
authors.affiliation: Department of Physical Chemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
authors.forename: S Mahmood
authors.initials: SM
authors.lastname: Fatemi
authors.affiliation: Department of Physical Chemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
authors.forename: F
authors.initials: F
authors.lastname: Shokouh
mesh_terms: D005615:Freezing; D006108:Graphite / Q000737:chemistry*; D006860:Hydrogen Bonding; D007053:Ice / Q000032:analysis*; D007700:Kinetics; D056004:Molecular Dynamics Simulation; D044367:Phase Transition; D044366:Transition Temperature; D014867:Water / Q000737:chemistry*
chemical_list: D007053:Ice; D014867:Water; D006108:Graphite
keywords: Confined ice-water mixture; Graphene sheets; Melting/freezing point; TIP4P/Ice water model