Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5147613 | International Journal of Hydrogen Energy | 2017 | 8 Pages |
Abstract
Hydrogen purification based on Pd deposition in porous polymeric membranes show promising results for hydrogen permeability and selectivity. It is due to high absorption property of Pd nanoparticles. In this work, gas permeability of carboxylic group functionalized Polyethylene terephthalate (PET) membranes with different time of functionalization have been examined. It has been found that PET membrane having more -COOH group shows higher selectivity for Hydrogen (H2). Further to improve the selectivity, these carboxylated PET membranes dipped in Pd nanoparticles solution for 6Â h and found more selective for H2 in comparison to Carbon dioxide (CO2) and Nitrogen (N2). As the carboxylation increases selectivity of H2 improves drastically in the beginning and nearly get saturated after 24Â h. Similar trend has been observed for these membranes after Pd nanoparticles deposition. Fourier transform infrared spectroscopy (FTIR) spectra of these membranes revealed that intensity of peaks related to -COOH group at 2968Â cmâ1 & 1716Â cmâ1 increases with functionalization time. Field Emission Scanning Electron Microscopy (FESEM) was used to study the surface morphology of membranes.
Related Topics
Physical Sciences and Engineering
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Electrochemistry
Authors
Rajesh Kumar, Kamakshi Kamakshi, Manoj Kumar, Kamlendra Awasthi,