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Stabilization of Aqueous Graphene Oxide with Acetone under ?-Ray/UV Irradiation
Hewen Liu
Author NameAffiliationE-mail
Hewen Liu Key Laboratory of Soft Matter Chemistry,Chinese Academy of Sciences,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei lhewen@ustc.edu.cn 
Abstract:
Graphene oxide (GO) is a kind of water soluble two-dimensional materials containing a large amount of oxygen-containing groups which induce GO with water solubility, biocompatibility and functionality, etc. But GO can be easily reduced by losing oxygen-containing groups under some circumstances including under irradiation of ?-ray or UV. In this work, we found that acetone can significantly slow down the reduction process of GO under the irradiation of either ?-ray or UV, which was supported by analysis results with UV-vis absorption spectra, X-ray photoelectron spectroscopy, etc. Acetone can capture and remove strongly reducible hydrated electrons generated in ?-irradiation. GO reduction by UV also involves electron transfer process which can be affected by the presence of acetone. Hence, acetone can be used to stabilize, adjust the radiation reduction process of GO. This is would be interesting not only in radiation and radiation protection, but also in understanding the redox properties of GO.
Key words:  Graphene Oxide  Acetone  ?-Ray/UV  Reduction.
FundProject:
Stabilization of Aqueous Graphene Oxide with Acetone under ?-Ray/UV Irradiation
刘和文
摘要:
Graphene oxide (GO) is a kind of water soluble two-dimensional materials containing a large amount of oxygen-containing groups which induce GO with water solubility, biocompatibility and functionality, etc. But GO can be easily reduced by losing oxygen-containing groups under some circumstances including under irradiation of ?-ray or UV. In this work, we found that acetone can significantly slow down the reduction process of GO under the irradiation of either ?-ray or UV, which was supported by analysis results with UV-vis absorption spectra, X-ray photoelectron spectroscopy, etc. Acetone can capture and remove strongly reducible hydrated electrons generated in ?-irradiation. GO reduction by UV also involves electron transfer process which can be affected by the presence of acetone. Hence, acetone can be used to stabilize, adjust the radiation reduction process of GO. This is would be interesting not only in radiation and radiation protection, but also in understanding the redox properties of GO.
关键词:  Graphene Oxide  Acetone  ?-Ray/UV  Reduction.
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