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Related Experiment Video

Updated: May 19, 2026

Synthesis and Functionalization of 3D Nano-graphene Materials: Graphene Aerogels and Graphene Macro Assemblies
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Influence of Precursor Composition on Microstructure Formation in Protein-Derived Porous Graphitic Aerogels.

M Shaharyar Wani1,2, Elizabeth G Stump1,2, Bridget R Denzer3

  • 1Department of Mechanical & Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, United States.

ACS Materials Au
|May 18, 2026
PubMed
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ACS nano·2025

Hierarchically porous graphitic aerogels (HGAs) were synthesized from various protein sources. Precursor composition significantly impacts the resulting aerogel microstructure and porosity, guiding material design.

Area of Science:

  • Materials Science
  • Nanotechnology
  • Carbon Materials

Background:

  • Hierarchically porous graphitic aerogels (HGAs) offer unique properties like low density and multilevel porosity.
  • These characteristics make HGAs suitable for energy storage, water purification, and environmental remediation.
  • Developing HGAs from sustainable and diverse precursors is an active area of research.

Purpose of the Study:

  • To investigate the synthesis of HGAs from various protein-based precursors via pyrolysis.
  • To understand how precursor composition influences the thermal decomposition and microstructural development of HGAs.
  • To guide the design of novel HGA-based composites and functional materials.

Main Methods:

  • Synthesis of HGAs using pasteurized egg white (PEW), α-lactalbumin, β-lactoglobulin, bovine serum albumin (BSA), and yogurt through pyrolysis.
Keywords:
carbon aerogelhierarchically porous, graphiticproteinspyrolysis

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  • Analysis of thermal decomposition and microstructural development based on precursor composition.
  • Elemental analysis and Raman spectroscopy to characterize the resulting aerogels and assess carbonization.

    • Main Results:

    • Protein precursors (PEW, α-lactalbumin, β-lactoglobulin, BSA) formed interconnected sheet- and fiber-like frameworks due to self-foaming during pyrolysis.
    • Yogurt precursor yielded a rough porous morphology, attributed to inhibitory effects of fats and inorganic species.
    • Control experiments with casein-whey mixture confirmed nonprotein constituents in yogurt influence structure formation.
    • Raman analysis showed increased pyrolysis temperature enhances carbonization and graphitic ordering.

    Conclusions:

    • Diverse protein sources can be utilized for HGA synthesis.
    • Precursor composition critically dictates the microstructural development and porosity of HGAs.
    • Understanding these relationships provides valuable insights for designing tailored HGAs for specific applications.