Simultaneous Reduction and Surface Functionalization of Graphene Oxide by Natural Cellulose with the Assistance of the Ionic Liquid
Simultaneous Reduction and Surface Functionalization of Graphene Oxide by Natural Cellulose with the Assistance of the Ionic Liquid
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DOI：
10.1021/jp3043889
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发表时间：
2012-07
影响因子：
3.7
通讯作者：
Hongdan Peng;L. Meng;Lvye Niu;Q. Lu
中科院分区：
文献类型：
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作者：
Hongdan Peng;L. Meng;Lvye Niu;Q. Lu
开发了一种环境友好的制备由还原氧化石墨烯（RGO）和纤维素组成的多功能自支撑纸的方法。结果表明，纤维素在离子液体中能有效还原氧化石墨烯（GO）纳米片，同时纤维素也能吸附在氧化石墨烯（GO）的底面上。由于纤维素是一种天然、廉价、可再生、无毒和可生物降解的聚合物，因此这种方法提供了一种简便且具有成本效益的方法来大规模合成高度水分散性和稳定的官能化石墨烯纳米片（称为RGO-CL）。此外，高度有序的RGO-CL复合纸是由单个的混合RGO-CL纳米片的流动定向组装而成的，并且显示出稳健的机械柔性和显著改善的生物相容性和导电性，因此在用于组织工程的生物医学支架、医疗器械等方面具有潜在的应用。
An environmentally friendly method for preparation of multifunctional free-standing papers composed of reduced graphene oxide (RGO) and cellulose has been developed. The results show that the cellulose can effectively reduce the graphene oxide (GO) nanosheets in ionic liquids and the cellulose can be adsorbed onto the basal planes of the resulted RGO at the same time. Since cellulose is a natural, inexpensive, renewable, nontoxic, and biodegradable polymer, this approach presents a facile and cost-effective method to synthesize highly water-dispersible and stable functionalized graphene nanosheets (termed as RGO-CL) on a large scale. Furthermore, highly ordered RGO-CL composite papers are fabricated by flow-directed assembly of individual hybrid RGO-CL nanosheets and show a robust mechanical flexibility and significantly improved biocompatibility and conductivity, and have therefore potential applications in biomedical scaffolds for tissue engineering, medical devices, and so on.