Graphitic porous carbon: efficient synthesis by a combustion method and application as a highly selective biosensor

Area of Science:

• Materials Science
• Electrochemistry
• Nanotechnology

Background:

• Developing efficient synthesis methods for advanced carbon materials is crucial.
• Graphitic porous carbon (GPC) offers unique properties for electrochemical applications.
• Existing methods often involve complex procedures and hazardous reagents.

Purpose of the Study:

• To develop a rapid, energy-efficient, and environmentally friendly method for synthesizing GPC.
• To evaluate the structural and electrochemical properties of the synthesized GPC.
• To demonstrate the utility of GPC in simultaneous electrochemical detection.

Main Methods:

• Combustion synthesis using dry ice (carbon source) and magnesium powder (reductant).
• Characterization using powder X-ray diffraction, transmission electron microscopy, nitrogen sorption analysis, and Raman spectroscopy.
• Electrochemical detection of dopamine and uric acid.

Main Results:

• Successfully synthesized GPC in approximately 10 minutes with high energy, material, and labor efficiency.
• GPC exhibited a high degree of graphitization, a surface area of 414.87 m² g⁻¹, and a total pore volume of 1.03 cm³ g⁻¹.
• Achieved sensitive simultaneous detection of dopamine (8.0 nM limit) and uric acid (30.0 nM limit) due to high conductivity.

Conclusions:

• The combustion method provides a highly efficient route to produce graphitic porous carbon.
• The synthesized GPC possesses excellent electrochemical properties suitable for sensitive analyte detection.
• This scalable and efficient synthesis method holds potential for industrial production.