TY - JOUR
T1 - Waste organic dye removal using MOF-based electrospun nanofibers of high amine density
AU - Ahmadijokani, Farhad
AU - Molavi, Hossein
AU - Amini, Majed
AU - Bahi, Addie
AU - Wuttke, Stefan
AU - Aminabhavi, Tejraj M.
AU - Kamkar, Milad
AU - Rojas, Orlando J.
AU - Ko, Frank
AU - Arjmand, Mohammad
N1 - Funding Information:
Dr. Arjmand would like to thank the Canada Research Chairs program for its financial support. The authors would like to acknowledge Syilx Okanagan First Nation for allowing to conduct research in their unceded ancestorial traditional territory. Mr. Ahmadijokani, Dr. Kamkar, and Dr. Rojas are grateful for funding support from the Canada Excellence Research Chair Program ( CERC-2018-00006 ) and the Canada Foundation for Innovation (Project number 38623). The authors also would like to thank Mr. Aydin Badrian (aydinbadrian.com) for his efforts on the graphical parts of this study.
Publisher Copyright:
© 2023 The Authors
PY - 2023/6/15
Y1 - 2023/6/15
N2 - The exceptional structural stability of UiO-66 metal–organic framework (MOF) and ligands' functional groups render UiO-66 as a versatile candidate for multiple applications, including wastewater treatment. The possibility of a broad spectrum of post-synthetic modification of UiO-66 further expands its prospective uses. However, commercial applications of UiO-66 have been hindered by the polycrystalline nature of the powder. In this research, modification to obtain UiO-66-NH2 and post-processing with nanofibers comprising chitosan and polyvinyl alcohol (PVA) were applied to faciliate deployment as a suitable option for water decontamination. MOF nanoparticles were post-synthetically modified with 2,4,6-trichloro-1,3,5-triazine (TCT) and 5-phenyl-tetrazole (PT) to produce high-amine containing UiO-66, thus introducing active nitrogen-containing functional groups that enhanced the removal efficiency of targeted molecules from aqueous media. A systematic study was undertaken to optimize the supporting nanofibers and to demonstrate that even a low MOF functionalization, of up to 7- wt%, offered a maximum methyl orange adsorption capacity of 619 mg/g, superior to most adsorbents reported so far. Furthermore, selectivity, regeneration ability, and the effect of ambient conditions were demonstrated.
AB - The exceptional structural stability of UiO-66 metal–organic framework (MOF) and ligands' functional groups render UiO-66 as a versatile candidate for multiple applications, including wastewater treatment. The possibility of a broad spectrum of post-synthetic modification of UiO-66 further expands its prospective uses. However, commercial applications of UiO-66 have been hindered by the polycrystalline nature of the powder. In this research, modification to obtain UiO-66-NH2 and post-processing with nanofibers comprising chitosan and polyvinyl alcohol (PVA) were applied to faciliate deployment as a suitable option for water decontamination. MOF nanoparticles were post-synthetically modified with 2,4,6-trichloro-1,3,5-triazine (TCT) and 5-phenyl-tetrazole (PT) to produce high-amine containing UiO-66, thus introducing active nitrogen-containing functional groups that enhanced the removal efficiency of targeted molecules from aqueous media. A systematic study was undertaken to optimize the supporting nanofibers and to demonstrate that even a low MOF functionalization, of up to 7- wt%, offered a maximum methyl orange adsorption capacity of 619 mg/g, superior to most adsorbents reported so far. Furthermore, selectivity, regeneration ability, and the effect of ambient conditions were demonstrated.
KW - Dye removal
KW - Electrospinning
KW - Metal-organic framework
KW - Nanofiber
KW - UiO-66-NH
UR - http://www.scopus.com/inward/record.url?scp=85153858655&partnerID=8YFLogxK
UR - https://doi.org/10.1016/j.cej.2023.143973
U2 - 10.1016/j.cej.2023.143119
DO - 10.1016/j.cej.2023.143119
M3 - Article
AN - SCOPUS:85153858655
SN - 1385-8947
VL - 466
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 143119
ER -
