Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
Environ Res. 2020 Oct;189:109956. doi: 10.1016/j.envres.2020.109956. Epub 2020 Jul 21.
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 m/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.
本文报道了一种从木质纤维素（作为碳骨架）和污泥蛋白（作为氮掺杂剂）共水热碳化（co-HTc）制备 N 掺杂多孔碳的可持续方法。HTC 预处理可以提高多孔碳的产率。尽管生物炭和 KOH 的质量比（1:1）较低，但仍可以获得大的比表面积。由水稻壳（RH）通过 HTC（260°C）与 KOH 活化（750°C）制得的多孔碳具有最大的 BET 比表面积可达 1396.5 m/g。同时，其对甲苯的吸附容量可达 394.2 mg/g。这归因于其具有较高的中孔率的大比表面积和分级多孔结构。N 掺杂的多孔碳也提高了吸附能力。此外，在 300°C 左右的热解吸具有高潜力可用于再生饱和多孔碳。
