Open AccessSelective Intercalation of Graphite Oxide by Methanol in Water/Methanol Mixtures
Author(s) -
Shujie You,
Junchun Yu,
Bertil Sundqvist,
L. A. Belyaeva,
Natalya V. Avramenko,
М.В. Коробов,
Alexandr V. Talyzin
Publication year - 2013
Publication title -
the journal of physical chemistry c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 289
eISSN - 1932-7455
pISSN - 1932-7447
DOI - 10.1021/jp312756w
Subject(s) - methanol , oxide , graphene , graphite oxide , intercalation (chemistry) , monolayer , graphite , chemistry , permeation , inorganic chemistry , alcohol , membrane , atmospheric temperature range , chemical engineering , materials science , organic chemistry , nanotechnology , thermodynamics , biochemistry , physics , engineering
Graphite oxide is selectively intercalated by methanol when exposed to liquid water/methanol mixtures with methanol fraction in the range 20-100%. Insertion of water into the GO structure occurs only when the content of water in the mixture with methanol is increased up to 90%. This conclusion is confirmed by both ambient temperature XRD data and specific temperature variations of the GO structure due to insertion/deinsertion of an additional methanol monolayer observed upon cooling/heating. The composition of GO-methanol solvate phases was determined for both low temperature and ambient temperature phases. Understanding of graphite oxide structural properties in binary water/methanol mixtures is important for the unusual permeation properties of graphene oxide membranes for water and alcohols. It is suggested that graphite oxide prepared by Brodie's method can be used for purification of water using selective extraction of methanol from water/alcohol mixtures.
Open access
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