| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 595497 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2010 | 5 Pages |
Abstract
Amylose and amylopectin were pyrolyzed at 400 °C and then oxidized with HNO3 and H2SO4 to modify its surface chemical properties. The pore structures and surface chemical properties of pyrolyzed carbons before and after oxidation were characterized and compared by nitrogen adsorption isotherms, thermogravimetric analysis, FT-IR spectra and SEM images. The results indicated that pore structures were hardly changed after oxidation, but the lactonic and phenolic groups could be markedly increased after oxidation, and the adsorption capacities for ammonia and carbon sulfide were enhanced.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Wenzhong Shen, Shouchun Zhang, Peiming Jiang, Yihong Liu,