Adsorption and subsequent partial photodegradation of methyl violet 2B on Cu/Al layered double hydroxides

Ariel Guzmán-Vargas, Enrique Lima, Gisselle A. Uriostegui-Ortega, Miguel A. Oliver-Tolentino, Esaú E. Rodríguez

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

© 2015 Elsevier B.V. All rights reserved. Uncalcined Cu/Al LDH was studied as adsorbent and photocatalyst in the adsorption and subsequent photodegradation of methyl violet 2B dye (MV2B). Physicochemical characterization was carried out by XRD, FTIR, UV-vis, including photoactive properties, DSC/TGA and SEM. Kinetic and thermodynamic models showed great affinity and sorption capacity, the maximum adsorption capacity was 361.0 mg g -1 obtained by Langmuir model, in addition, the results showed that the dye was adsorbed on the LDH surface. Photocatalytic activity was evaluated in the MV2B dye photodegradation process, and it was confirmed by the presence OH radicals monitored by EPR spin trapping technique, additionally, COD and TOC parameters were measured, 13 C NMR showed differences for the adsorbed and photodegraded samples.
Original languageAmerican English
Pages (from-to)372-380
Number of pages333
JournalApplied Surface Science
DOIs
StatePublished - 15 Feb 2016

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Hydroxides
Gentian Violet
Photolysis
Photodegradation
Adsorption
hydroxides
Coloring Agents
Dyes
dyes
adsorption
Spin Trapping
crack opening displacement
Fourier Transform Infrared Spectroscopy
Photocatalysts
adsorbents
Thermodynamics
sorption
Adsorbents
Paramagnetic resonance
affinity

Cite this

Guzmán-Vargas, Ariel ; Lima, Enrique ; Uriostegui-Ortega, Gisselle A. ; Oliver-Tolentino, Miguel A. ; Rodríguez, Esaú E. / Adsorption and subsequent partial photodegradation of methyl violet 2B on Cu/Al layered double hydroxides. In: Applied Surface Science. 2016 ; pp. 372-380.
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Adsorption and subsequent partial photodegradation of methyl violet 2B on Cu/Al layered double hydroxides. / Guzmán-Vargas, Ariel; Lima, Enrique; Uriostegui-Ortega, Gisselle A.; Oliver-Tolentino, Miguel A.; Rodríguez, Esaú E.

In: Applied Surface Science, 15.02.2016, p. 372-380.

Research output: Contribution to journalArticle

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AU - Guzmán-Vargas, Ariel

AU - Lima, Enrique

AU - Uriostegui-Ortega, Gisselle A.

AU - Oliver-Tolentino, Miguel A.

AU - Rodríguez, Esaú E.

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N2 - © 2015 Elsevier B.V. All rights reserved. Uncalcined Cu/Al LDH was studied as adsorbent and photocatalyst in the adsorption and subsequent photodegradation of methyl violet 2B dye (MV2B). Physicochemical characterization was carried out by XRD, FTIR, UV-vis, including photoactive properties, DSC/TGA and SEM. Kinetic and thermodynamic models showed great affinity and sorption capacity, the maximum adsorption capacity was 361.0 mg g -1 obtained by Langmuir model, in addition, the results showed that the dye was adsorbed on the LDH surface. Photocatalytic activity was evaluated in the MV2B dye photodegradation process, and it was confirmed by the presence OH radicals monitored by EPR spin trapping technique, additionally, COD and TOC parameters were measured, 13 C NMR showed differences for the adsorbed and photodegraded samples.

AB - © 2015 Elsevier B.V. All rights reserved. Uncalcined Cu/Al LDH was studied as adsorbent and photocatalyst in the adsorption and subsequent photodegradation of methyl violet 2B dye (MV2B). Physicochemical characterization was carried out by XRD, FTIR, UV-vis, including photoactive properties, DSC/TGA and SEM. Kinetic and thermodynamic models showed great affinity and sorption capacity, the maximum adsorption capacity was 361.0 mg g -1 obtained by Langmuir model, in addition, the results showed that the dye was adsorbed on the LDH surface. Photocatalytic activity was evaluated in the MV2B dye photodegradation process, and it was confirmed by the presence OH radicals monitored by EPR spin trapping technique, additionally, COD and TOC parameters were measured, 13 C NMR showed differences for the adsorbed and photodegraded samples.

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