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首页> 外文期刊>Chemistry: A European journal >One-Step Double Covalent Functionalization of Reduced Graphene Oxide with Xanthates and Peroxides
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One-Step Double Covalent Functionalization of Reduced Graphene Oxide with Xanthates and Peroxides

机译：黄原酸酯和过氧化物对氧化石墨烯的一步双价共价官能化

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摘要

Radical functionalization of reduced graphene oxide has been achieved by reaction with a xanthate in the presence of peroxide as a radical initiator. X-ray photoelectron spectroscopy, bulk elemental analyses, and thermogravimetric analyses showed that the xanthate grafting is covalent and efficient. The synthesis and use of seven xanthates and three peroxides showed that the highest grafting yield is obtained when xanthate and peroxide are introduced in stoichiometric amounts. It also revealed that the peroxide used as radical initiator is grafted at the graphenic surface during the functionalization. The method presented in this contribution therefore allows bifunctionalized reduced graphene oxide samples to be easily obtained in one single step. This method leads to undamaged graphene sheets with higher dispersibility than the pristine sample.
机译：通过在过氧化物作为自由基引发剂的存在下与黄原酸酯反应已经实现了还原的氧化石墨烯的自由基官能化。 X射线光电子能谱，大量元素分析和热重分析表明，黄原酸酯接枝是共价且有效的。七种黄药和三种过氧化物的合成和使用表明，当以化学计量的量引入黄药和过氧化物时，可获得最高的接枝率。还揭示了在官能化过程中，用作自由基引发剂的过氧化物接枝在石墨表面上。因此，本贡献中提供的方法可以在一个步骤中轻松获得双功能还原氧化石墨烯样品。该方法导致未损坏的石墨烯片具有比原始样品更高的分散性。

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