Journal article
Adsorption removal of Congo red over flower-like porous microspheres derived from Ni/Al layered double hydroxide
RSC Advances, Vol.5(103), pp.84937-84946
2015
Abstract
In this paper, flower-like microspheres of Ni/Al mixed oxide (Ni/Al-CLDH-H), which consist of a hollow core and mesoporous shell, were prepared with the aid of sulfonated polystyrene beads. Thanks to the unique structure, the adsorption performance of the sample toward Congo red (CR) was higher than that of the sample Ni/Al-CLDH-S consisting of a solid core and mesoporous shell, which was prepared in the absence of sulfonated polystyrene beads. The Langmuir, Freundlich, Temkin, Dubinin–Radushkevich, Redlich–Peterson and Sips isotherm models were utilized to describe the adsorption process of Ni/Al-CLDH-H; the Sips model was found to best fit the adsorption data. The adsorption kinetics of CR onto Ni/Al-CLDH-H followed the pseudo-second-order model best, compared with the use of the pseudo-first-order and Elovich models. The thermodynamic study showed that the adsorption process was endothermic and spontaneous in nature. Our newly developed material retained a superior adsorption capacity without a significant loss after a number of adsorption–desorption cycles; indicating its potential as a reusable adsorbent for efficient removal of CR in water.
Details
- Title
- Adsorption removal of Congo red over flower-like porous microspheres derived from Ni/Al layered double hydroxide
- Authors/Creators
- W. Huang (Author/Creator) - Taizhou UniversityX. Yu (Author/Creator) - Jinan UniversityD. Li (Author/Creator) - Murdoch University
- Publication Details
- RSC Advances, Vol.5(103), pp.84937-84946
- Publisher
- Royal Society of Chemistry
- Identifiers
- 991005540786307891
- Copyright
- © 2015 Royal Society of Chemistry
- Murdoch Affiliation
- School of Engineering and Information Technology
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 2 Chemistry
- 2.90 Water Treatment
- 2.90.27 Adsorption
- Web Of Science research areas
- Chemistry, Multidisciplinary
- ESI research areas
- Chemistry