Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 4, Issue 7, Pages 3750-3756Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.6b00388
Keywords
Cellulose; Lignin; Hemicellulose; Porous carbon; Supercapacitor
Categories
Funding
- National Natural Science Foundation of China [91534114, 21376208]
- Zhejiang Provincial Natural Science Foundation for Distinguished Young Scholars of China [LR13B030001]
- Fundamental Research Funds for the Central Universities [2016FZA3006]
- Partner Group Program of the Zhejiang University
- Max-Planck Society
Ask authors/readers for more resources
Porous carbon materials stemming from biomass have drawn increasing interest because of their sustainable properties. Cellulose, hemicellulose, and lignin are the three basic components of crude biomass, and were investigated to reveal their influence on the derived carbonaceous materials. Huge amounts of oxygen-containing functional groups in cellulose and hemicellulose tend to be eliminated as H2O, CO2, and CO and give micropores during pyrolysis, whereas lignin contains plentiful aromatic units which are chemically inert, and thus produce nonporous carbon materials. When the KHCO3 was introduced during the pyrolysis process, the plentiful hydroxyl in cellulose and hemicellulose underwent dehydration condensation among different parent polymers, which are responsible for the formation of macroporous structure. By contrast, The beta-O-4 bands in lignin experience homolysis and give rise to benzene-containing units, which finally result in carbon nanosheets. Furthermore, we demonstrated the mixture of cellulose, hemicellulose, and lignin can display a three-dimensional porous structure (containing macropores, mesopores, and micropores) when less than SO% of lignin is contained.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available