The synthesis of graphene via decomposition of SiC has opened a promising route for large-scale production of graphene. However, extremely high requirements for almost perfectly ordered crystal SiC and harsh process conditions such as high temperatures (>1200°C) and ultra-high vacuum are two significant challenges hindering its wide use to synthesize graphene by decomposition of SiC. Here, we show that the readily available precursor of carbides, amorphous TiC (a-Ti1-xCx), can be transformed into graphene nanosheets (GNS) with tunable layers by chlorination method at very low temperatures (200°C) and ambient pressures. Moreover, freestanding GNS can be achieved by stripping off GNS from the surface of resulting particles. Therefore, our strategy, the direct transformation of a-Ti1-xCx into graphene, is simple and expected to be easily scaled up.

Tao Peng, Zongkui Kou, Hui Wu, Shichun Mu*. Graphene from Amorphous Titanium Carbide by Chlorination under 200℃ and Atmospheric Pressures, Scientific Reports, 2014, 4, 5494.

Available from: http://www.researchgate.net/publication/263504685_Graphene_from_Amorphous_Titanium_Carbide_by_Chlorination_under_200oC_and_Atmospheric_Pressures [accessed Apr 20, 2017].

上述工作得到了国家自然科学基金课题、国家973项目和湖北省自然科学基金重点项目的资助。

发布：材料复合新技术国家重点实验室  时间：2014-07-01