A facile synthesis of nitrogen-doped porous carbons from lignocellulose and protein wastes for VOCs sorption
| Autor: | Yafei Shen, Niyu Zhang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Nitrogen
Carbonization Chemistry Thermal desorption Proteins Sorption 010501 environmental sciences Lignin 01 natural sciences Biochemistry Carbon 03 medical and health sciences Hydrothermal carbonization 0302 clinical medicine Adsorption Chemical engineering Specific surface area Biochar 030212 general & internal medicine Porosity 0105 earth and related environmental sciences General Environmental Science BET theory |
| Zdroj: | Environmental Research. 189:109956 |
| ISSN: | 0013-9351 |
| DOI: | 10.1016/j.envres.2020.109956 |
| Popis: | This paper reported a sustainable method for preparation of N-doped porous carbon from co-hydrothermal carbonization (co-HTC) of lignocellulose (as a carbon skeleton) and sludge protein (as a nitrogen dopant). The HTC pretreatment could improve the yield of porous carbon. Although a low mass ratio (1:1) of biochar and KOH was employed, large specific surface areas of the porous carbons could be achieved. The porous carbon from rice husk (RH) by the HTC (260 °C) combined with the KOH activation (750 °C) had a largest BET surface area up to 1396.5 m2/g. Meanwhile, its adsorption capacity on toluene could reach 394.2 mg/g. It was attributed to its large specific surface area and hierachical porous structure with higher meso-porosity. The porous carbons with N-doping also improved the adsorption capacity. Furthermore, thermal desorption at around 300 °C had a high potential for regeneration of the saturated porous carbons. |
| Databáze: | OpenAIRE |
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