منابع مشابه
Ultrasound Assisted Green Synthesis and Characterization of Graphene Oxide
Graphene oxide (GO) was prepared by an improved green chemical method using graphite flakes, KMnO4, a mixture of H2SO4/H3PO4, H2O2 and HCl. In several stages, ultrasound was used to separate the oxidized layers of GO. The use of ultrasound optimizes the effect of the reacting agents, decreasing the required amou...
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Green tea and its major polyphenolic flavonoid, epigallocatechin gallate (EGCG), have been credited with cancer chemopreventive activity for many years; the mechanism for this activity, however, has remained obscure. Now, as reported in this issue of the journal (beginning on page 1366), Urusova and colleagues showed direct binding of EGCG to the peptidyl prolyl cis/trans isomerase Pin1, which ...
متن کاملGreen-Reduction of Covalently Functionalized Graphene Oxide with Varying Stoichiometry
Graphene-based materials were prepared by chemical reduction of covalently functionalized graphene oxide with environmentally friendly agents. Two varying stoichiometry of graphene oxide (GO) induced by using different chemical preparation conditions, further covalent functionalization of the GO materials with 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride / N-hydroxysuccinimide a...
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atomic scale, their results can be compared to the predictions of density functional theory. Not surprisingly, these calculations suggest that the clusters deform when the tip makes contact with them, and that certain arrangements of the metal clusters are unstable — in agreement with the experimental observations. In particular, the researchers find that the contact conductance of the tip–mole...
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Chemical reduction of graphene oxide (GO) to graphene employs the use of toxic and environmentally harmful reducing agents, hindering mass production of graphene which is of tremendous technological importance. In this study we report a green approach to the synthesis of graphene, bio-reduced by crude polysaccharide. The polysaccharide reduces exfoliated GO to graphene at room temperature in an...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2010
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(10)70153-x