Retracted Article: Tuning the chemistry of graphene oxides by a sonochemical approach: application of adsorption properties

Yubing Sun; Shubin Yang; Congcong Ding; Zhongxiu Jin; Wencai Cheng

doi:10.1039/C5RA02021B

Retracted Article: Tuning the chemistry of graphene oxides by a sonochemical approach: application of adsorption properties†

Yubing Sun,*^abc Shubin Yang,^b Congcong Ding,^b Zhongxiu Jin^b and Wencai Cheng^de

* Corresponding authors

^a Institute of Plasma Physics, Chinese Academy of Science, P.O. Box 1126, Hefei, P. R. China
E-mail: sunyb@ipp.ac.cn
Fax: +86 551 65591310
Tel: +86 551 65592788

^b School of Environment and Chemical Engineering, North China Electric Power University, Beijing 102206, P. R. China

^c School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou, P. R. China

^d Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, P. R. China

^e Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Abstract

The change in the chemical properties of graphene oxides (GOs) can be tuned by the sonochemical approach. The layers of GOs were significantly decreased by the sonochemical approach as seen from high resolution transmission electron microscopy and atomic force microscopy analysis. Abundant hydroxyl groups and carboxyl groups were introduced with increasing ultrasonic time by the analysis of Raman, FTIR, UV-vis absorbance spectroscopy and XPS techniques. The adsorption of U(VI) on GOs significantly increased at pH 1.0–6.0, whereas decreased adsorption was observed at pH > 8.0. The adsorption capacities of GOs increased with increasing ultrasonic time. According to EXAFS analysis, the interaction mechanism between radionuclides and GOs was inner-sphere surface complexation. Such an efficient approach to control the chemical properties of GOs further promotes its applications in environmental cleanup.

RSC Advances

Retracted Article: Tuning the chemistry of graphene oxides by a sonochemical approach: application of adsorption properties†

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