Finger-Like Carbon-Based Nanostructures Produced by Combustion of Flour-Based Sticks (Spaghetti)

被引:2
作者
Ossler, Frederik [1 ]
Hetherington, Crispin J. D. [2 ]
机构
[1] Lund Univ, Combust Phys, POB 118, SE-22100 Lund, Sweden
[2] Lund Univ, Ctr Anal & Synth, Dept Chem, POB 124, SE-22100 Lund, Sweden
来源
C-JOURNAL OF CARBON RESEARCH | 2019年 / 5卷 / 02期
关键词
finger-like; tubular; nanostructure; biomass; spaghetti; flame; microscopy; carbon; BAMBOO CHARCOAL; ENERGY-STORAGE; NANOTUBES; SOOT;
D O I
10.3390/c5020021
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Biomass is becoming particularly important as a starting material for advanced carbon structures. In this study, we found interesting nanostructures on the surface of burnt spaghetti using scanning electron microscopy, transmission electron microscopy (TEM), and energy dispersive X-ray spectroscopy (EDX) for analysis. The structures were elongated and finger-like, with evidence that the tubes have shell and core components. The shell was carbon that included amorphous and layered graphene structures. EDX showed enriched potassium and phosphorous in the core and at the tip of the tubes. The results indicate that tube formation depends on phase separation of polar/ionic and nonpolar moieties when water is produced in the biomass from the pyrolysis/combustion. The tube growth is most probably due to the raising pressure of vapor that cannot escape through the carbon film that is formed at the surface of the stick from flame heat. This process resembles glass blowing or volcanic activity, where the carbon acts as the glass or earth's crust, respectively. These observations suggest that new interesting tubular nanostructures with different properties on the inside and outside can be produced in a relatively simple way, utilizing processes of combustion of starch-rich biomass materials.
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页数:13
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