TITLE:
Structural Study of Cellulose-Iron Oxide Composite Materials
AUTHORS:
Dexu Kong, Lee D. Wilson
KEYWORDS:
Characterization, Iron Oxide, Cellulose, Composite, Roxarsone, Adsorption
JOURNAL NAME:
Journal of Materials Science and Chemical Engineering,
Vol.6 No.4,
April
12,
2018
ABSTRACT:
There are limited structural studies of iron oxide coated cellulose materials despite their use as adsorbents for the removal of waterborne arsenic species. This study reports on the structural characterization of cellulose-iron oxide composites at variable iron oxide content using spectroscopy methods (Raman, solids 13C NMR, powder X-ray diffraction (pXRD)) and thermal gravi-metric analysis (TGA). Iron oxide was supported onto cellulose (ca. 25 wt.%) without significant loss in the Fe coating efficiency, where the accessibility of the biopolymer -OH groups affect the coating efficiency and yield of the iron oxide-cellulose composite. Isotherm adsorption studies for cellulose, iron oxide species and the cellulose composite materials with roxarsone (3-nitro- 4-hydroxyphenylarsonic acid) were studied to characterize the surface chemical properties of these potential adsorbent materials.