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Graphene oxide‐based two‐dimensional molecular brush for efficient removal of lead and copper ions from water media
Author(s) -
Dong Yanjie,
Sang Dashen,
He Chengdong,
Sheng Xinfeng,
Lei Longwen
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900368
Subject(s) - brush , chemistry , graphene , oxide , adsorption , metal ions in aqueous solution , copper , metal , chemical engineering , grafting , ion , molecule , inorganic chemistry , nanotechnology , composite material , polymer , organic chemistry , materials science , engineering
In this study, graphene oxide (GO)‐based two‐dimensional molecular brush was fabricated by grafting polyacrylamide onto GO nanosheets for efficient removal of Pb 2+ and Cu 2+ from water media. Owing to the rich oxygen and nitrogen functional groups in the composites, the synthetic GO two‐dimensional molecular brush can get the maximum adsorption capacity of 268.4 mg/g for Pb 2+ and 127.2 mg/g for Cu 2+ , respectively. Moreover, the interspaces between the stacked two‐dimensional molecular brushes provide fast pathways for the diffusion of heavy metal ions. As a result, GO‐based two‐dimensional molecular brush can reach the adsorption equilibrium within 60 min. These results indicated that the synthetic GO‐based two‐dimensional molecular brush is a promising adsorbent to separate heavy metal ions from water media.