A versatile self-assembly approach toward high performance nanoenergetic composite using functionalized graphene

Rajagopalan Thiruvengadathan, Stephen W. Chung, Sagnik Basuray, Balamurugan Balasubramanian, Clay S. Staley, Keshab Gangopadhyay, Shubhra Gangopadhyay

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

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 Bi 2O3 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.

Original languageEnglish (US)
Pages (from-to)6556-6564
Number of pages9
JournalLangmuir
Volume30
Issue number22
DOIs
StatePublished - Jun 10 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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