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http://dx.doi.org/10.1016/j.cap.2014.06.023

Graphene oxide templated alumina nanosheet for the removal of As(V)  

Won, Dong Sin (Department of Energy Storage Conversion Engineering, Chonbuk National University)
Park, In-Su (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
Park, Myounghoon (Department of Energy Storage Conversion Engineering, Chonbuk National University)
Sohn, Yeonsun (Department of Energy Storage Conversion Engineering, Chonbuk National University)
Kim, Byoung-Gyu (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
Nahm, Kee Suk (Department of Energy Storage Conversion Engineering, Chonbuk National University)
Chung, Kang-Sup (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Pil (Department of Energy Storage Conversion Engineering, Chonbuk National University)
Publication Information
Current Applied Physics / v.14, no.9, 2014 , pp. 1245-1250 More about this Journal
Abstract
The current paper demonstrates a simple preparative method of alumina nanosheet through controlled hydrolysis and condensation on the surface of graphene oxide (GO). Taking into account the moisture sensitivity of the alumina precursor, its hydrolysis was carried out after introduction of interaction between the functional groups of GO and the alumina precursor in a non-aqueous solvent. On pyrolysis of the aluminum oxide-GO composite, a free-standing alumina nanosheet was obtained, which was further confirmed by XRD, TEM, STEM-EDX, FE-SEM, TGA, and $N_2$ physisorption. Due to a favorable nanosheet structure, the alumina nanosheets showed a better performance in the removal of As (V) when compared to alumina prepared without GO template, even though the latter had a larger surface area than the alumina nanosheet.
Keywords
Alumina; Nanosheet; Graphene oxide; Templating method; Adsorbent;
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