TY - JOUR
T1 - Al(III)-based MOFs adsorbent for pollution remediation
T2 - Insights into selective adsorption of sodium diclofenac
AU - Obeso, Juan L.
AU - Viltres, Herlys
AU - Flores, Catalina V.
AU - López-Olvera, Alfredo
AU - Rajabzadeh, Amin Reza
AU - Srinivasan, Seshasai
AU - Ibarra, Ilich A.
AU - Leyva, Carolina
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/6
Y1 - 2023/6
N2 - The presence and persistence of pharmaceuticals in water affect human health, causing drug resistance and adverse effects on aquatic life. This study reports on the exceptional adsorption properties of Al(III)-based MOFs such as DUT-5 and MOF-303 for diclofenac sodium (DCF) remediation with remarkable chemical stability and cyclability. MOF-303 and DUT-5 displayed a maximum adsorption capacity of 334.89 and 103.36 mg g−1, respectively. The adsorbents exhibited high chemical stability at different pH levels ranging from 4 to 10 during adsorption. In both MOFs, the adsorption kinetic data were based on the pseudo-second-order (PSO) model. DUT-5 showed faster adsorption due to the increased diffusion because of a large surface area for this MOF material. The adsorption isotherms followed the Temkin and Freundlich models for DUT-5 and MOF-303, respectively, which suggested the involvement of physicochemical forces in the adsorption mechanisms. Thermodynamic analysis proved the endothermic nature of the adsorption for both MOFs. Interaction mechanisms such as metal-π, π-π stacking, and electrostatic interaction were proposed based on the effect of pH and support by FTIR and XPS data. Therefore, both materials are viable adsorbing agents that may considerably impact pharmaceutical wastewater treatment; even MOF-303 showed higher adsorption capacity than different reported pristine and modified MOFs. This study also explores the facile synthesis of MOF materials with efficient adsorption behavior. It confirms the potential application of hydroxo-functionalized MOFs for the remediation of wastewater contaminated with DCF.
AB - The presence and persistence of pharmaceuticals in water affect human health, causing drug resistance and adverse effects on aquatic life. This study reports on the exceptional adsorption properties of Al(III)-based MOFs such as DUT-5 and MOF-303 for diclofenac sodium (DCF) remediation with remarkable chemical stability and cyclability. MOF-303 and DUT-5 displayed a maximum adsorption capacity of 334.89 and 103.36 mg g−1, respectively. The adsorbents exhibited high chemical stability at different pH levels ranging from 4 to 10 during adsorption. In both MOFs, the adsorption kinetic data were based on the pseudo-second-order (PSO) model. DUT-5 showed faster adsorption due to the increased diffusion because of a large surface area for this MOF material. The adsorption isotherms followed the Temkin and Freundlich models for DUT-5 and MOF-303, respectively, which suggested the involvement of physicochemical forces in the adsorption mechanisms. Thermodynamic analysis proved the endothermic nature of the adsorption for both MOFs. Interaction mechanisms such as metal-π, π-π stacking, and electrostatic interaction were proposed based on the effect of pH and support by FTIR and XPS data. Therefore, both materials are viable adsorbing agents that may considerably impact pharmaceutical wastewater treatment; even MOF-303 showed higher adsorption capacity than different reported pristine and modified MOFs. This study also explores the facile synthesis of MOF materials with efficient adsorption behavior. It confirms the potential application of hydroxo-functionalized MOFs for the remediation of wastewater contaminated with DCF.
KW - MOFs
KW - adsorption
KW - diclofenac
KW - mechanism
KW - pollution remediation
UR - http://www.scopus.com/inward/record.url?scp=85152604100&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2023.109872
DO - 10.1016/j.jece.2023.109872
M3 - Artículo
AN - SCOPUS:85152604100
SN - 2213-3437
VL - 11
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 3
M1 - 109872
ER -