title: Removal of methylene blue from aqueous solution by graphene oxide.
abstract: Graphene oxide (GO) is a highly effective absorbent of methylene blue (MB) and can be used to remove MB from aqueous solution. A huge absorption capacity of 714 mg/g is observed. At initial MB concentrations lower than 250 mg/L, the removal efficiency is higher than 99% and the solution can be decolorized to nearly colorless. The removal process is fast and more efficient at lower temperatures and higher pH values. The increase of ionic strength and the presence of dissolved organic matter would further enhance the removal process when MB concentration is high. The results indicate that GO can be applied in treating industrial effluent and contaminated natural water. The implications to graphene-based environmental technologies are discussed.
authors.affiliation: Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China.
authors.forename: Sheng-Tao
authors.initials: ST
authors.lastname: Yang
authors.forename: Sheng
authors.initials: S
authors.lastname: Chen
authors.forename: Yanli
authors.initials: Y
authors.lastname: Chang
authors.forename: Aoneng
authors.initials: A
authors.lastname: Cao
authors.forename: Yuanfang
authors.initials: Y
authors.lastname: Liu
authors.forename: Haifang
authors.initials: H
authors.lastname: Wang
mesh_terms: D006108:Graphite / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008751:Methylene Blue / Q000302:isolation & purification*; D010087:Oxides / Q000737:chemistry*; D012996:Solutions; D014867:Water / Q000737:chemistry
chemical_list: D010087:Oxides; D012996:Solutions; D014867:Water; D006108:Graphite; D008751:Methylene Blue