Dye adsorption on layered graphite oxide
Access Status
Authors
Date
2011Type
Metadata
Show full item recordCitation
Source Title
ISSN
School
Remarks
The website for Journal of Chemical & Engineering Data is at <a href="http://pubs.acs.org/journal/jceaax">http://pubs.acs.org/journal/jceaax</a>
Collection
Abstract
Graphite oxide (GO) was prepared by a modified Hummers−Offeman method and was tested as an adsorbent for the removal of dyes in aqueous solution. The structure of GO was characterized by N2 adsorption, X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. It is found that GO does not show a significant change in surface area, but the layered graphene structure was expanded, and several surface oxygen functional groups were formed, which play a significant role in adsorption. The amount of the dyes, methylene blue and malachite green, adsorbed on the GO was much higher than that on graphite, and the adsorption capacity based on the Langmuir isotherm is (351 and 248) mg·g−1, respectively, much higher than activated carbon. The adsorption mechanism was proposed as electrostatic attraction.
Related items
Showing items related by title, author, creator and subject.
-
Sen, Tushar; Mei, C. (2012)In this work the adsorptive properties of aluminium oxide in the removal of zinc (Zn2+) from aqueous solution have been studied by laboratory batch adsorption kinetic and equilibrium experiments.The results show that the ...
-
Che Ibrahim, Shariff (2010)Barley straw, an agricultural byproduct, was identified as a potential adsorbent material for wastewater treatment as it offers various advantages such as abundant availability at no or very low cost, little processing ...
-
Terdkiatburana, Thanet (2007)Humic substances are macromolecules that naturally occur in all environments in which vegetation matter are present. In general, humic acid is part of humic substances which form the major fraction of the dissolved organic ...