Pillared graphene oxide composite as an adsorbent of soluble hydrocarbons in water: pH and organic matter effects.

ABSTRACT: Graphene oxide (GO) is a single-atom-thick sheet of carbon with oxygen-containing functional groups decorating its basal plane and edge sites. Most of its high surface area can be lost due to restacking of individual layers during the synthesis and drying of GO-based bulk sorbents. There is great interest to increase the specific surface area of graphene-based sorbents by introducing organic molecules as "pillaring agents" between GO sheets to hinder the stacking process and create sorbents with elevated surface area. This work synthesizes pillared GO by introducing chitosan (CS), a linear polysaccharide with various molecular weights. A composite of low molecular weight CS at a CS/GO ratio of 0.1 is shown to have the highest specific surface area (up to 70.5 m²/g) in comparison

SUBMITTER: Flores-Chaparro CE 

PROVIDER: S-EPMC7517627 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature