Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 45, Issue 4, Pages 1842-1849Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2014.03.005
Keywords
Mesoporous carbon nitride; Cr(VI); Adsorption; Electrostatic interaction
Categories
Funding
- Natural Science Foundation of China [51178223, 51208257, 20807023]
- Natural Science Foundation of Jiangsu Province [SBK201240759]
- China Postdoctoral Science Foundation [2013M541677]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1202007B]
- project from Environmental Protection Department of Jiangsu Province of China [2012008]
Ask authors/readers for more resources
Mesoporous carbon nitride (MCN) was synthesized using mesoporous silica SBA-15 as the template and employed for the adsorption of Cr(VI) from aqueous solutions. Cr(VI) adsorption over MCN followed pseudo-second-order kinetic model and the Langmuir adsorption model. The maximum sorption capacity of MCN for Cr(VI) was 48.31 mg/g at pH 5.7, higher than activated carbon (AC) and ordered mesoporous carbon (CMK-3). An electrostatic interaction mechanism between Cr(VI) and surface pyridine groups on MCN was proposed by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) analysis. The coexisting anions, especially the carbonate, influenced the adsorption amount due to the competitive adsorption of Cr(VI) on the surface of MCN. The adsorbed Cr(VI) could be effectively desorbed by 0.5 mol/L NaOH solution, suggesting that MCN could be a promising adsorbent for Cr(VI) removal from waste effluents. (C) 2014 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available