TY - JOUR
T1 - Adsorption and subsequent partial photodegradation of methyl violet 2B on Cu/Al layered double hydroxides
AU - Guzmán-Vargas, Ariel
AU - Lima, Enrique
AU - Uriostegui-Ortega, Gisselle A.
AU - Oliver-Tolentino, Miguel A.
AU - Rodríguez, Esaú E.
N1 - Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2016/2/15
Y1 - 2016/2/15
N2 - 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 - 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.
KW - Adsorption models
KW - Kinetic
KW - LDH Cu/Al materials
KW - MV dye
KW - Photodegradation
KW - characterization
UR - http://www.scopus.com/inward/record.url?scp=84957928562&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2015.12.050
DO - 10.1016/j.apsusc.2015.12.050
M3 - Artículo
SN - 0169-4332
VL - 363
SP - 372
EP - 380
JO - Applied Surface Science
JF - Applied Surface Science
ER -