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UV-irradiation assisted functionalization and binding of Pd nanoparticles in polycarbonate membranes for hydrogen separation

  • Recent Advances in Nanotechnology for Environmental Applications
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Abstract

For hydrogen-based energy systems development, purified hydrogen (H2) is a basic requirement and it can be achieved by using the H2-selective membranes. For having H2-selective membranes, it is a decent approach to embed the H2-sensitive materials in the polymeric membranes. Palladium (Pd) is one of the widely used materials for hydrogen-selective membranes due to its strong affinity towards H2 absorption. In the present work, we have used Pd nanoparticles in UV-functionalized track-etched polycarbonate (PC) membranes for better selectivity and permeability of H2 gas. In the UV-irradiation process of membranes, the photo-fries mechanism leads to the C-O bond breaking from the carbonate group of PC molecules and as a result, there is a high number of bond breaking. This phenomenon provides the more active sites for the attachment of Pd nanoparticles in comparison with the pristine PC membrane. The gas permeability of these membranes suggests that the selectivity of H2 over nitrogen (N2) and carbon dioxide (CO2) is increased by the addition of uniformly distributed Pd nanoparticles in the functionalized membranes.

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Acknowledgments

One of the author RK is thankful to CSIR New Delhi for providing SRF. The authors also acknowledge MRC, MNIT Jaipur for the characterization facility.

Funding

This study was financially supported by SERB, New Delhi (ECR/2016/001780).

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Rajesh Kumar: methodology, investigation, validation, formal analysis, writing—original draft, writing—review and editing; Kamakshi: investigation, formal analysis, writing—review and editing; Manoj Kumar: validation, writing—review and editing; Kamlendra Awasthi: conceptualization, resources, writing—review and editing, supervision, project administration, funding acquisition.

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Correspondence to Kamakshi.

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Kumar, R., Kamakshi, Kumar, M. et al. UV-irradiation assisted functionalization and binding of Pd nanoparticles in polycarbonate membranes for hydrogen separation. Environ Sci Pollut Res 28, 46404–46413 (2021). https://doi.org/10.1007/s11356-020-11106-2

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  • DOI: https://doi.org/10.1007/s11356-020-11106-2

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