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Nitrogen-Doped Starbons®: Methodology Development and Carbon Dioxide Capture Capability.

Ryan E Barker1, Michael C Brand2, James H Clark1

  • 1Green Chemistry Centre of Excellence, Department of Chemistry, University of York, YO10 5DD, York, UK.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|October 25, 2023
PubMed
Summary
This summary is machine-generated.

Nitrogen-doped Starbons® derived from starch were prepared using various nitrogen sources and heating methods. Melamine and microwave heating yielded the highest nitrogen incorporation, enhancing carbon dioxide adsorption and selectivity.

Keywords:
Starbon®carbon dioxide adsorptionmelaminemicrowavenitrogen-doped

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Adsorption Technology

Background:

  • Starbons® are starch-derived porous materials with potential applications in gas adsorption.
  • Nitrogen doping can modify the surface properties of porous carbons, enhancing their adsorption capabilities.
  • Optimizing nitrogen incorporation is crucial for developing advanced adsorbent materials.

Purpose of the Study:

  • To synthesize nitrogen-doped Starbons® using diverse nitrogen sources and heating techniques.
  • To investigate the impact of nitrogen doping on the porous structure and gas adsorption properties of Starbons®.
  • To evaluate the performance of nitrogen-doped Starbons® for carbon dioxide capture and separation.

Main Methods:

  • Preparation of nitrogen-doped Starbons® (SNx 300y and SNx 800y) using five nitrogen sources (glycine, β-alanine, urea, melamine, nicotinamide) and three heating methods (thermal, monomodal microwave, multimodal microwave).
  • Characterization of materials' nitrogen content and pore structure.
  • Gravimetric and volumetric measurements of carbon dioxide, nitrogen, and methane adsorption isotherms.

Main Results:

  • Melamine as a nitrogen source and microwave heating methods resulted in the highest nitrogen incorporation without compromising the Starbon® pore structure.
  • Nitrogen-doped Starbons® generally exhibited higher carbon dioxide adsorption capacities compared to undoped counterparts (S300 and S800).
  • The doped materials demonstrated significantly enhanced selectivity for CO2 over N2 and CH4 over N2 compared to S800.

Conclusions:

  • Nitrogen doping, particularly with melamine and microwave heating, effectively enhances the CO2 adsorption capacity and selectivity of Starbons®.
  • The developed nitrogen-doped Starbons® show promise as efficient adsorbents for carbon dioxide capture applications.
  • The study highlights the potential of tailoring porous carbon materials through controlled doping and synthesis methods.