Removal of methyl orange from aqueous solutions through adsorption by calcium aluminate hydrates

Zhang, Ping, Wang, Tianqi, Qian, Guangren, Wu, Daishe, & Frost, Ray L. (2014) Removal of methyl orange from aqueous solutions through adsorption by calcium aluminate hydrates. Journal of Colloid and Interface Science, 426, pp. 44-47.

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Methyl orange (MO) is a kind of anionic dye and widely used in industry. In this study, tricalcium aluminate hydrates (Ca-Al-LDHs) are used as an adsorbent to remove methyl orange (MO) from aqueous solutions. The resulting products were studied by X-ray diffraction (XRD), infrared spectroscopy (MIR), thermal analysis (TG-DTA) and scanning electron microscope (SEM). The XRD results indicated that the MO molecules were successfully intercalated into the tricalcium aluminate hydrates, with the basal spacing of Ca-Al-LDH expanding to 2.48 nm. The MIR spectrum for CaAl-MO-LDH shows obvious bands assigned to the N@N, N@H stretching vibrations and S@O, SO_ 3 group respectively, which are considered as marks to assess MO_ ion intercalation into the interlayers of LDH. The overall morphology of CaAl-MOLDH displayed a ‘‘honey-comb’’ like structure, with the adjacent layers expanded.

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ID Code: 72858
Item Type: Journal Article
Refereed: Yes
Keywords: Methyl orange (MO), Tricalcium aluminate (C3A), Hydrates, Intercalation, Adsorption
DOI: 10.1016/j.jcis.2014.03.060
ISSN: 00219797
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Elsevier Inc.
Copyright Statement: NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Colloid and Interface Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Colloid and Interface Science, [Volume 426, (15 July 2014)] DOI: 10.1016/j.jcis.2014.03.060
Deposited On: 18 Jun 2014 22:57
Last Modified: 01 Aug 2016 14:08

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