Issue 8, 2015

Hydrophilic hollow carbon nanocapsules for high-capacity adsorptive removal of cationic dyes in aqueous systems

Abstract

Hollow carbon nanocapsules (HCNs) are prepared via the decomposition and leaching of nickel carbide (Ni3C) nanoparticles. The leaching process renders the HCNs hydrophilic and improves their aqueous dispersibility through the formation of oxygen-containing functional groups on the surface. These functional groups, in conjunction with the graphitized shell of the HCNs, result in a high affinity for cationic dye species such as rhodamine B (RB) and crystal violet (CV) in aqueous solution. Adsorption experiments are performed to investigate the absorptive performance of the HCNs as a function of the initial dye concentration, contact time and temperature. The results confirm that the HCNs have both a high adsorption rate and a high maximum adsorption capacity for the considered organic dyes. Specifically, 85% of the maximum adsorption capacity is obtained within the first 5 minutes of adsorption and the maximum adsorption capacity at 333 K is 628.93 and 675.68 mg gāˆ’1 for RB and CV dyes, respectively.

Graphical abstract: Hydrophilic hollow carbon nanocapsules for high-capacity adsorptive removal of cationic dyes in aqueous systems

Supplementary files

Article information

Article type
Paper
Submitted
29 Oct 2014
Accepted
03 Dec 2014
First published
08 Dec 2014

RSC Adv., 2015,5, 6123-6130

Hydrophilic hollow carbon nanocapsules for high-capacity adsorptive removal of cationic dyes in aqueous systems

R. Chiang, R. Chiang and F. Shieu, RSC Adv., 2015, 5, 6123 DOI: 10.1039/C4RA13396J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements