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Preparation of Sulfur-Free Exfoliated Graphite by a Two-Step Intercalation Process and Its Application for Adsorption of Oils
Joint Authors
He, Jun
Song, Laizhou
Yang, Hongxia
Ren, Xiaohui
Xing, Lifei
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-06
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The sulfur-free exfoliated graphite (EG) was prepared by a two-step chemical oxidation process, using natural flake graphite (NFG) as the precursor.
The first chemical intercalation process was carried out at a temperature of 30°C for 50 min, with the optimum addition of NFG, potassium permanganate, and perchloric acid in a weight ratio of 1 : 0.4 : 10.56.
Then, in the secondary intercalation step, dipotassium phosphate was employed as the intercalating agent to further increase the exfoliated volume (EV) of EG.
NFG, graphite intercalation compound (GIC), and EG were characterized by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FTIR), BET surface area, and porosity analyzer.
Also, the uptakes of crude oil, diesel oil, and gasoline by EG were determined.
Results show that perchloric acid and hydrogen phosphate are validated to enter into the interlayer of graphite flake.
The obtained EG possesses a large exfoliated volume (EV) and has an excellent affinity to oils; thus, the material has rapid adsorption rates and high adsorption capacities for crude oil, diesel oil, and gasoline.
American Psychological Association (APA)
He, Jun& Song, Laizhou& Yang, Hongxia& Ren, Xiaohui& Xing, Lifei. 2017. Preparation of Sulfur-Free Exfoliated Graphite by a Two-Step Intercalation Process and Its Application for Adsorption of Oils. Journal of Chemistry،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1172068
Modern Language Association (MLA)
He, Jun…[et al.]. Preparation of Sulfur-Free Exfoliated Graphite by a Two-Step Intercalation Process and Its Application for Adsorption of Oils. Journal of Chemistry No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1172068
American Medical Association (AMA)
He, Jun& Song, Laizhou& Yang, Hongxia& Ren, Xiaohui& Xing, Lifei. Preparation of Sulfur-Free Exfoliated Graphite by a Two-Step Intercalation Process and Its Application for Adsorption of Oils. Journal of Chemistry. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1172068
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1172068