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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Selective Intercalation of Graphite Oxide by Methanol in Water/ Methanol Mixtures
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Selective Intercalation of Graphite Oxide by Methanol in Water/ Methanol Mixtures

机译：甲醇在水/甲醇混合物中对石墨氧化物的选择性嵌入

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摘要

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 understanding 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.
机译：当暴露于甲醇分数在20％至100％范围内的液态水/甲醇混合物中时，甲醇会选择性地嵌入氧化石墨。仅当与甲醇的混合物中的水含量增加到90％时，才将水插入GO结构。该结论由环境温度XRD数据和GO结构的特定温度变化所证实，这归因于在冷却/加热时观察到的额外甲醇单层的插入/插入。确定了低温和环境温度相的GO-甲醇溶剂化物相的组成。理解二元水/甲醇混合物中氧化石墨的结构特性对于理解氧化石墨烯膜对水和醇的异常渗透特性非常重要。建议通过布罗迪方法制备的氧化石墨可用于通过从水/醇混合物中选择性提取甲醇来纯化水。

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