High-Performance Nanopapers Based on Benzenesulfonic Functionalized Graphenes
High-Performance Nanopapers Based on Benzenesulfonic Functionalized Graphenes
复制标题
DOI：
10.1021/nn303917p
复制
发表时间：
2012-11-01
期刊：
影响因子：
17.1
通讯作者：
Lee, L. James
中科院分区：
文献类型：
--
作者：
Huang, Wenyi;Ouyang, Xilian;Lee, L. James
高性能石墨烯纳米纸由具有苯磺酸基团的功能性石墨烯的水溶液通过共价键制备。对于具有13.7重量%官能团并在150 ° C下退火的样品，所形成的疏水石墨烯纳米纸显示出360 MPa的最高拉伸强度和102 GPa的杨氏模量。这些样品在250 ℃退火后显示出4.45 × 10（4）S/m的高电导率。石墨烯纳米纸的上述性质远高于任何先前报道的数据。纳米纸的性质取决于石墨烯上的官能度和退火温度，这进一步通过X射线光电子能谱、FTIR和X射线衍射图证明。这种独特的纳米纸可以很容易地结合和夹在任何固体表面上，从而在许多应用中产生巨大的潜力，例如气体扩散屏障，EMI屏蔽，热管理和防腐蚀。
High-performance graphene nanopapers are prepared from an aqueous solution of functional graphenes with benzenesulfonic acid groups via covalent bonds. The formed hydrophobic graphene nanopapers showed the highest tensile strength of 360 MPa and Young's modulus of 102 GPa for samples with 13.7 wt % functional group and annealed at 150 degrees C. These samples showed a high electrical conductivity of 4.45 x 10(4) S/m after being annealed at 250 degrees C. The aforementioned properties of graphene nanopapers are much higher than any previously reported data. The properties of nanopapers depend on the degree of functionality on graphenes and the annealing temperatures, which are further evidenced by X-ray photoelectron spectroscopy, FTIR, and X-ray diffraction patterns. Such unique nanopapers can be easily bounded and sandwiched onto any solid surface to give rise to great potentials in many applications such as gas diffusion barriers, EMI shielding, thermal management, and anticorrosion.