Effective adsorption and collection of cesium from aqueous solution using graphene oxide grown on porous alumina

Graphene oxide (GO) with a large surface area was synthesized by the direct growth of GO on porous alumina using chemical vapor deposition to study the Cs adsorption mechanism in aqueous solutions. Electronic structure analysis employing in situ near-edge X-ray absorption fine structure spectroscopy...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2018-04, Vol.57 (4S), p.4
Main Authors: Entani, Shiro, Honda, Mitsunori, Shimoyama, Iwao, Li, Songtian, Naramoto, Hiroshi, Yaita, Tsuyoshi, Sakai, Seiji
Format: Article
Language:English
Subjects:
Adsorption
Aluminum oxide
Aqueous solutions
Atomic structure
Cesium
Chemical bonds
Chemical synthesis
Chemical vapor deposition
Electronic structure
Fine structure
Functional groups
Graphene
Nuclides
Organic chemistry
Radioisotopes
Spectrum analysis
Structural analysis
X ray photoelectron spectroscopy
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Summary:Graphene oxide (GO) with a large surface area was synthesized by the direct growth of GO on porous alumina using chemical vapor deposition to study the Cs adsorption mechanism in aqueous solutions. Electronic structure analysis employing in situ near-edge X-ray absorption fine structure spectroscopy and X-ray photoelectron spectroscopy measurements clarifies the Cs atoms bond via oxygen functional groups on GO in the aqueous solution. The Cs adsorption capacity was found to be as high as 650-850 mg g−1, which indicates that the GO/porous alumina acts as an effective adsorbent with high adsorption efficiency for radioactive nuclides in aqueous solutions.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.57.04FP04