Adsorption of p-nitrophenol on organoclays A thermoanalytical study

Park, Yuri, Frost, Ray L., Ayoko, Godwin A. and Morgan, Dana L. (2013) Adsorption of p-nitrophenol on organoclays A thermoanalytical study. Journal of Thermal Analysis and Calorimetry, 111 1: 41-47. doi:10.1007/s10973-011-2103-7

Author Park, Yuri
Frost, Ray L.
Ayoko, Godwin A.
Morgan, Dana L.
Title Adsorption of p-nitrophenol on organoclays A thermoanalytical study
Formatted title
Adsorption of p-nitrophenol on organoclays A thermoanalytical study
Journal name Journal of Thermal Analysis and Calorimetry   Check publisher's open access policy
ISSN 1388-6150
Publication date 2013-01
Year available 2013
Sub-type Article (original research)
DOI 10.1007/s10973-011-2103-7
Volume 111
Issue 1
Start page 41
End page 47
Total pages 7
Place of publication Budapest, Hungary
Publisher Akademiai Kiado Rt
Collection year 2014
Language eng
Formatted abstract
In this study, organoclays were prepared through ion exchange of a single cationic surfactant, hexadecyltrimethylammonium bromide and characterised by a range of methods including X-ray diffraction (XRD) and thermogravimetric analysis. Changes in the surface properties of montmorillonite and the organoclays were observed and the basal spacings of organoclays with and without p-nitrophenol were determined using XRD. The thermal stability of both organoclays were measured using thermogravimetry. As the surfactant loading increased, the expanded basal spacings were observed, and different molecular configurations of surfactant were identified. When the surfactant loading exceeded 1.0 CEC, surfactant molecules tend to adsorb strongly on the clay surface and this resulted in increased affinity to organic compounds. The adsorbed p-nitrophenol and the surfactant decomposed simultaneously. Hence, the surfactant molecules and adsorbed p-nitrophenol are important in determining the thermal stabilities of organoclays. This study enhances the understanding of the structure and adsorption properties of organoclays and has further implications for the application of organoclays as filter materials for the removal of organic pollutants in aqueous solutions.
Keyword Organoclays
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
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