催化作用
蔗渣
微晶纤维素
化学工程
碳纤维
石墨烯
材料科学
原材料
石墨
X射线光电子能谱
微晶
合理设计
石油化工
拉曼光谱
纤维素
多孔性
化学
生物量(生态学)
纳米技术
有机化学
制浆造纸工业
复合数
复合材料
结晶学
海洋学
工程类
地质学
物理
光学
作者
Lili Gai,Jianbin Li,Qi Wang,Run Tian,Kai Li
标识
DOI:10.1016/j.jece.2021.106678
摘要
The generation of porous graphitic carbon (PGC) by catalytic graphitization of biomass has been widely studied and the growth evolution mechanism needs to be further investigated. This study investigated the direct growth of PGC through sugarcane bagasse and microcrystalline cellulose as raw materials. Structural analyses by Brunauer–Emmett–Teller theory and Raman spectroscopy showed a significant improvement in graphitic structure. The SBET of PGC derived from sugarcane bagasse at 1000 °C for 1 h with 5 mmol Fe was 311 m2 g−1, and I2D/ID ratio was 0.553. The effect of growth parameters on the qualities of PGC was investigated by transition state theory and chemical reaction rate curves, and the growth mechanism of PGC was elucidated. Results showed that the biomass carbon sources evolve first from small molecule substances to graphene oxide and then to PGC under appropriate conditions. This study provided a comprehensive strategy for the rational and effective preparation of PGC and opened a clear pathway for the low-cost synthesis of graphitic carbon materials.
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