A Versatile Self-Assembly Approach toward High Performance Nanoenergetic Composite Using Functionalized Graphene

作者：Thiruvengadathan Rajagopalan; Chung Stephen W; Basuray Sagnik; Balasubramanian Balamurugan; Staley Clay S; Gangopadhyay Keshab; Gangopadhyay Shubhra^*

来源：Langmuir, 2014, 30(22): 6556-6564.

DOI：10.1021/la500573e

Exploiting the functionalization chemistry of graphene, long-range electrostatic and short-range covalent interactions were harnessed to produce multifunctional energetic materials through hierarchical self-assembly of nanoscale oxidizer and fuel into highly reactive macrostructures. Specifically, we report a methodology for directing the self-assembly of Al and Bi2O3 nanoparticles on functionalized graphene sheets (FGS) leading to the formation of nanocomposite structures in a colloidal suspension phase that ultimately condense into ultradense macrostructures. The mechanisms driving self-assembly were studied using a host of characterization techniques including zeta potential measurements, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), particle size analysis, micro-Raman spectroscopy, and electron microscopy. A remarkable enhancement in energy release from 739 +/- 18 to 1421 +/- 12 J/g was experimentally measured for the FGS self-assembled nanocomposites.

• 出版日期2014-6-10