School of Chemistry and Environment, Beijing University of Aeronautics and Astronautics, Beijing 100191, People's Republic of China. School of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, People's Republic of China.
Nanotechnology. 2011 Aug 12;22(32):325601. doi: 10.1088/0957-4484/22/32/325601. Epub 2011 Jul 14.
Chemically modified graphene has been studied in many applications due to its excellent electrical, mechanical, and thermal properties. Among the chemically modified graphenes, reduced graphene oxide is the most important for its structure and properties, which are similar to pristine graphene. Here, we introduce an environment-friendly approach for preparation of reduced graphene oxide nanosheets through the reduction of graphene oxide that employs L-cysteine as the reductant under mild reaction conditions. The conductivity of the reduced graphene oxide nanosheets produced in this way increases by about 10(6) times in comparison to that of graphene oxide. This is the first report about using amino acids as a reductant for the preparation of reduced graphene oxide nanosheets, and this procedure offers an alternative route to large-scale production of reduced graphene oxide nanosheets for applications that require such material.
化学改性石墨烯由于其优异的电学、力学和热学性能，在许多应用中都得到了研究。在化学改性石墨烯中，还原氧化石墨烯因其结构和性能与原始石墨烯相似而最为重要。在这里，我们介绍了一种通过使用 L-半胱氨酸作为还原剂在温和的反应条件下还原氧化石墨烯来制备还原氧化石墨烯纳米片的环保方法。与氧化石墨烯相比，以这种方式制备的还原氧化石墨烯纳米片的电导率增加了约 10^6 倍。这是首次报道使用氨基酸作为还原剂来制备还原氧化石墨烯纳米片，并且该方法为需要这种材料的应用提供了一种大规模生产还原氧化石墨烯纳米片的替代途径。
