Adsorption of organic contaminants by graphene nanosheets: A review

WATER RESEARCH

卷:126

Review

Ersan, Gamze¹  Apul, Onur G.^2,3  Perreault, Francois³  Karanfil, Tanju¹ 

[1] Clemson Univ, Dept Environm Engn & Earth Sci, Anderson, SC 29625 USA

[2] Univ Massachusetts, Dept Civil & Environm Engn, Lowell, MA 01854 USA

[3] Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 USA

关键词: Graphene;    Graphene oxide;    Organic contaminants;    Adsorption;   

DOI  :  10.1016/j.watres.2017.08.010

来源: Elsevier

【 摘 要 】

Graphene nanosheets (GNS) such as graphenes and graphene oxides (GOs) have been widely investigated as next-generation adsorbents in both water and wastewater treatment processes due to their unique physicochemical properties and their affinity towards different classes of organic contaminants (OCs). In the last five years, more than 40 articles investigating adsorption of different classes of OCs by graphene and GO were published in peer-reviewed journals. Adsorption mechanisms were controlled by molecular properties of OCs (e.g., aromatic vs aliphatic, molecular size and hydrophobicity), characteristics of adsorbents (e.g., surface area, pore size distribution, and surface functional groups), and background solution properties (e.g., pH, ionic strength, surfactants, NOM, and temperature). This literature survey includes: (i) a summary of adsorption of OCs by GNS, (ii) a comprehensive discussion of the mechanisms and factors controlling the adsorption of OCs by GNS and a comparison of their adsorption behaviors with those of CNT. This literature survey also identifies future research needs and challenges on the adsorption of OCs by GNS. (C) 2017 Elsevier Ltd. All rights reserved.

【 授权许可】

Free