We synthesized disk-shaped and nano-sized graphene (DSNG) though a novel ion-exchange methodology. This new methodology is achieved by constructing metal ion/ion-exchange resin framework. The morphology and size of the graphene can be modulated by changing the mass ratio of the carbon-containing resin to the cobalt-containing precursor. This is the first time to show that the DSNG formed on the...

This work describes the preparation of the cellulose phosphate with high ion exchange capacity from rice straw and bagasse for removal of heavy metals. In this study, rice straw and bagasse were modified by the reaction with phosphoric acid in the presence of urea. The introduced phosphoric group is an ion exchangeable site for heavy metal ions. The reaction by microwave heating yielded modifie...

One of serious problems of preparative carbohydrate chemistry is the separation of aldoses from ketoses. Of a large number of chromatographic procedures for separation of aldoses and ketoses described in the literature, only the use of anion exchangers in the bisulfite form afforded satisfactory resolution. Samuelson and Sjoström [1] separated fructose from glucose and mannose on a Dowex 2 ion-...