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Graphene‐Based Multifunctional Iron Oxide Nanosheets with Tunable Properties
Author(s) -
Koo Hye Young,
Lee HaJin,
Go HyeAh,
Lee Young Boo,
Bae Tae Sung,
Kim Jun Kyung,
Choi Won San
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201002252
Subject(s) - graphene , materials science , adsorption , oxide , nanotechnology , fabrication , nanoparticle , flexibility (engineering) , nanomaterials , chemical engineering , chemistry , metallurgy , medicine , alternative medicine , statistics , mathematics , organic chemistry , pathology , engineering
We report the synthesis of graphenes with tunable properties due to the growth of needlelike iron oxide (IO) nanoparticles on their surfaces. The electrical conductivity, flexibility, and magnetic properties of graphene nanosheets (GNSs) could be tuned on demand by fine controlling both the surface coverage and the length of the IO nanoneedles. The degree of coverage of the IO nanoparticles on the surface of the GNSs made it possible to control the resulting properties of the IO/GNSs on demand. As examples of their utility, paperlike materials were generated by simple filtration, and the resulting IO/GNS nanocomposites showed extraordinary removal capacity and fast adsorption rates for As V and Cr VI ions in water. Another possible application is the preparation of multifunctional films equipped with conductivity, flexibility, and magnetic properties. The fabrication process is easy to scale up at a low cost. In addition, both the colloidal solution and film forms of the resulting IO/GNSs were effective for removal of heavy metal ions, meaning this material could be utilized for actual industrial applications.