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Stabilization of Aqueous Graphene Oxide with Acetone under γ-Ray/UV Irradiation
Hong Qin,Qin-yi Zhu,He-wen Liu*
Author NameAffiliationE-mail
Hong Qin Key Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Qin-yi Zhu Key Laboratory of Soft Matter Chemistry, Chinese Academy of Sciences, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
He-wen 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 230026, China 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 infuse GO with water solubility, biocompatibility and functionality, etc. But GO can be easily reduced by losing oxygen-containing groups under some circumstances such as irradiation of γ-ray or ultraviolet (UV). In this work, we found that acetone can signi cantly slow down the reduction process of GO under the irradiation of either γ-ray or UV, which was supported by analysis results with UV-visible (UV-Vis) absorption spectra, X-ray photoelectron spectroscopy, etc. Acetone can capture and remove strongly reducible hydrated electrons generated under γ-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 would be interesting not only in radiation and radiation protection, but also in understanding the redox properties of GO.
Key words:  Graphene oxide, Acetone, γ-Ray/UV, Reduction
FundProject:
丙酮稳定伽玛射线/紫外辐照下的水性氧化石墨烯
秦 洪,祝沁易,刘和文*
摘要:
本文通过紫外可见光吸收光谱、X射线光电子能谱、电化学等方法证明丙酮能捕获和去除伽玛辐照产生的强还原性的水合电子. 在紫外线辐照过程中,丙酮的加入可能影响了电子的转移过程. 因此,丙酮可以用来稳定、调节GO的辐射还原过程.
关键词:  氧化石墨烯,氧化还原,辐射,稳定,丙酮
DOI:10.1063/1674-0068/31/cjcp1803048
分类号: