International Centre for Material Science, Chemistry and Physics of Materials Unit and New Chemistry Unit, Jakkur, P.O., Bangalore-560064, India.
Chem Commun (Camb). 2014 Feb 25;50(16):2015-7. doi: 10.1039/c3cc46907g.
We report the design and synthesis of two porous graphene frameworks (PGFs) prepared via covalent functionalization of reduced graphene oxide (RGO) with iodobenzene followed by a C-C coupling reaction. In contrast to RGO, these 3D frameworks show high surface area (BET, 825 m(2) g(-1)) and pore volumes due to the effect of pillaring. Interestingly, both the frameworks show high CO2 uptake (112 wt% for PGF-1 and 60 wt% for PGF-2 at 195 K up to 1 atm). PGFs show nearly 1.2 wt% H2 storage capacity at 77 K and 1 atm, increasing to ∼1.9 wt% at high pressure. These all carbon-based porous solids based on pillared graphene frameworks suggest the possibility of designing related several such novel materials with attractive properties.
我们报告了两种多孔石墨烯框架（PGF）的设计和合成，它们是通过还原氧化石墨烯（RGO）与碘苯的共价功能化，然后进行 C-C 偶联反应制备的。与 RGO 相比，这些 3D 框架由于支柱的作用表现出高的比表面积（BET，825 m2 g-1）和孔体积。有趣的是，这两种框架都表现出高的 CO2 吸附能力（在 195 K 和 1 个大气压下，PGF-1 为 112wt%，PGF-2 为 60wt%）。PGF 在 77 K 和 1 个大气压下具有接近 1.2wt%的 H2 存储能力，在高压下增加到约 1.9wt%。这些基于支柱石墨烯框架的全碳多孔固体表明了设计具有吸引力性质的相关几种新型材料的可能性。
