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Related Experiment Video

Updated: Jun 22, 2025

Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
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Molecular modeling analysis for functionalized graphene/sodium alginate composite.

Hanan Elhaes1, Asmaa Ibrahim2, Osama Osman2,3

  • 1Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, Cairo, 11757, Egypt.

Scientific Reports
|June 27, 2024
PubMed
Summary

Functionalized graphene with lithium and sodium alginate shows potential for biomedical use. Computational analysis revealed enhanced reactivity and electronic properties in these novel graphene composites.

Keywords:
B3LYPDFTElectronic propertiesGrapheneSodium alginate

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Area of Science:

  • Materials Science
  • Computational Chemistry
  • Biomedical Engineering

Background:

  • Graphene's unique properties make it a promising material for biomedical applications.
  • Functionalization of graphene can tailor its electronic and structural characteristics.
  • Understanding interactions between graphene, dopants, and biopolymers is crucial for developing new biomaterials.

Purpose of the Study:

  • To investigate the functionalization of graphene with lithium and its interaction with sodium alginate (SA).
  • To explore the potential of these graphene-based composites for biomedical applications.
  • To computationally analyze the structural, electronic, and spectroscopic properties of functionalized graphene.

Main Methods:

  • Density Functional Theory (DFT) calculations were employed.
  • The B3LYP/6-31G(d,p) level of theory was used to study electronic properties.
  • Structural, electronic, and spectroscopic properties were analyzed, including Total Dipole Moment (TDM) and HOMO/LUMO energy gap (ΔE).

Main Results:

  • Graphene functionalized with two lithium atoms showed a TDM of 5.967 Debye and ΔE of 0.748 eV.
  • The graphene/3SA/Li configuration exhibited the highest reactivity with a TDM of 15.509 Debye and ΔE of 0.280 eV.
  • Spectral analysis indicated a shift towards lower wavenumbers upon interaction, and PDOS plots showed significant contributions from Li, Na, H, and O in HOMO orbitals.

Conclusions:

  • Graphene functionalized with lithium and sodium alginate demonstrates enhanced electronic and structural properties.
  • The studied graphene-based composites show significant potential for advanced biomedical applications.
  • Computational insights provide a foundation for optimizing these materials for practical use.