Open AccessThe application of modified polyetheleneterphthalate (pet) nanofibers; characterization and isotherm study
Author(s) -
Hanan A. Ahmed,
Parween H. Saleem,
Suhad A. Yasin,
Ibtisam A. Saeed
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1853/1/012006
Subject(s) - freundlich equation , nanofiber , polyethylene terephthalate , langmuir , adsorption , materials science , aqueous solution , langmuir adsorption model , crown ether , chemical engineering , fourier transform infrared spectroscopy , nuclear chemistry , endothermic process , chemistry , organic chemistry , composite material , engineering , ion
In this study, dibenzo crown ether (DB18C6) is used to chemically modify the Electrospun Polyethylene Terephthalate (PET) nanofibers. The main parameters influence on the PET nanofiber’s surface modification with crown ether concentration and other solvents has been tested. The PET nanofibers with and without (DB18C6) are put into comparison by scrutinizing FTIR, TGA, SEM, and EDX results. It is to be mentioned that the modification of the PET nanofibers with crown ether is utilized for the extraction of methylene blue (MB) from aqueous solutions. For the purpose of evaluating the potential of the chemically modified PET nanofibers as adsorbents to remove MB from aqueous solutions, experiments of batch adsorption are carried out. The effect of MB concentration, solution pH, and shaking time are optimized. Several isotherm models such as Langmuir, Freundlich, Tempkin, and Dubinin - Radushkevich (D-R) equations are utilized to test the equilibrium results. Owing to the high correlation coefficient (R2), the adsorption of MB into the modified PET is detected through Langmuir model. ΔGo, ΔHo, and ΔSo quantities are estimated. The negative ΔG° values, the positive ΔHo, and ΔSo values indicate that the adsorption process is spontaneous and endothermic.