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π "The N-doped #carbon material is one of the most efficient #adsorption materials in the field of carbon capture."Β So, in a recent study a series of N-doped #biochars were successfully prepared by a facile solvent-free method.
Details in a π§΅below β¬οΈ
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π "The N-doped #carbon material is one of the most efficient #adsorption materials in the field of carbon capture."Β So, in a recent study a series of N-doped #biochars were successfully prepared by a facile solvent-free method.
Details in a π§΅below β¬οΈ
[1/7]
Among all N-doped biochars, "the #biochar prepared with corncobπ½ powder, K2CO3Β & urea at 800Β°C showed highest #adsorption ability (5.69 mmol/g at 0Β°C & 1 bar) & selectivity (38.24 at CO2/N2Β = 10/90).Β The biochar also showed excellent thermal stability & cycle performance."
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"Notable, correlation analysis showed that ultra-micropores were the decisive factor for #CO2Β #adsorption at low temperatures; nevertheless, the effect of N-doping would gradually appear with the increase of adsorption temperature."
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"By fitting the kinetics of CO2Β adsorption, it was found experimentally that N-doping could increase the activation energy between #biochar and #CO2."
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"Further theoretical analysis found that N-doping mainly enhanced the dispersion interaction between the biochar surface and CO2Β to improve the adsorption performance, and the higher the nitrogen content, the more obvious the improvement."
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So, this work (β‘οΈsciencedirect.com/science/articlβ¦) "not only prepared a N-doped #biochar with excellent CO2 adsorption performance from waste biomass, but also revealed the promotion mechanism of N-doping in detail by combining theoretical calculations with experiments."
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