- Title
- Facile One-Pot Synthesis of Activated Porous Biocarbons with a High Nitrogen Content for CO2 Capture
- Creator
- Singh, Gurwinder; Lakhi, Kripal S.; Park, Dae-Hwan; Srivastava, Prashant; Naidu, Ravi; Vinu, Ajayan
- Relation
- ChemNanoMat Vol. 4, Issue 3, p. 281-290
- Publisher Link
- http://dx.doi.org/10.1002/cnma.201700348
- Publisher
- Wiley-VCH Verlag GmbH
- Resource Type
- journal article
- Date
- 2018
- Description
- A facile one-pot synthesis of porous activated biocarbons with a high nitrogen content (NEPBs) through a simple in-situ self-assembly of Arundo donax and urea combined with a solid state activation using KOH/ZnCl2 is presented. NEPBs show dominant microporous character and possess a high nitrogen content in the form of pyridinic-N and pyrrolic-N and a high specific surface area. The nitrogen content of NEPBs was determined to be in the range of 7.74–19.15%, which was much higher than that of biocarbon derived from non-activated biomass (1.12%). We also demonstrate that the nitrogen content of NEPBs can easily be tuned by adjusting the impregnation ratios of urea and KOH/ZnCl2. The NEPBs show impressively high CO2 adsorption capacities of 4.8 mmol g−1 at 0 °C/1 bar and 14.1 mmol g−1 at 0 °C/30 bar. A high value of the isosteric heat of adsorption is observed (39 kJ mol−1), confirming the role of nitrogen to enhance the CO2 adsorption capacities through a strong adsorbent-adsorbate interaction. It is anticipated that the strategy presented here could be extended for the generation of a series of other biomass-based porous carbon materials with much higher nitrogen contents and controlled textural properties for applications including energy storage and conversion and carbon capture.
- Subject
- activated biocarbons; biomass; C02 adsorption; microporous materials; nitrogen; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1453736
- Identifier
- uon:44721
- Identifier
- ISSN:2199-692X
- Language
- eng
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