期刊
CHEMICAL ENGINEERING JOURNAL
卷 297, 期 -, 页码 106-115出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2016.04.012
关键词
Graphene oxide; Coagulation; Layered double hydroxide; Mechanism
资金
- NSFC [21225730, 91326202, 21403064, 21577032, 21377132, 21307135, 41273134]
- Fundamental Research Funds for the Central Universities [JB2015001]
- Kunlun scholarship of Qinghai province
- Jiangsu Provincial Key Laboratory of Radiation Medicine and Protection
- Priority Academic Program Development of Jiangsu Higher Education Institutions
The Mg/Al layered double hydroxides (Mg/Al-LDH) as well as Ca/Al-LDH were successfully synthesized by a facile co-precipitation method and were applied as adsorbents for the efficient elimination of graphene oxide (GO) from aqueous solutions. Experimental data showed that the temperature and ionic strength did not play significant role in GO removal. The interaction of GO with Mg/Al-LDH and Ca/Al-LDH achieved interaction equilibrium in less than 1 h. The removal mechanism of GO on Mg/Al-LDH and Ca/AI-LDH could be explained by electrostatic attraction and bridging function between the two materials, and the removal capabilities were Ca/Al-LDH > Mg/Al-LDH. Based on the experimental results, the Ca/Al-LDH could be a very promising material for efficient elimination of GO from aqueous solutions. Results from this study provided critical information for the transport and potential fate of GO in natural environment. (C) 2016 Elsevier B.V. All rights reserved.
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