Kinetics Studies on Free Radical Scavenging Property of Ceria in Polysulfone-Ceria Radiation Resistant Mixed-matrix Membrane

13 Pages Posted: 12 Oct 2020

See all articles by Amita Bedar

Amita Bedar

Homi Bhabha National Institute / Bhabha Atomic Research Centre

Beena G Singh

Homi Bhabha National Institute / Bhabha Atomic Research Centre

Pradip K Tiwari

Homi Bhabha National Institute / Bhabha Atomic Research Centre

Ramesh C Bindal

Homi Bhabha National Institute / Bhabha Atomic Research Centre

Soumitra Kar

Homi Bhabha National Institute / Bhabha Atomic Research Centre

Date Written: February 7, 2020

Abstract

Cerium oxide (ceria) contains two stable states of cerium ions (Ce3+ and Ce4+). The presence of these two states, and the ability to swap from one state to another (Ce3+ ↔ Ce4+) by scavenging the highly reactive oxygen species (ROS) generated from radiolysis of water, ensures the enhanced stability of polysulfone (Psf) membranes in the γ-radiation environment. In this study, the ROS scavenging ability of ceria was studied. Ceria nanoparticles were found to scavenge hydroxyl radicals and hydrogen peroxide by mimicking peroxidase-like activity. This is responsible for offering protection to the Psf host matrix, and in turn the stability to the Psf-ceria mixed-matrix membranes (MMMs) in γ-radiation environment. Thus, presence of ceria nanoparticles provides an opportunity for the application of Psf-ceria MMMs in radioactive effluent treatment with increased life span, without compromise in the performance.

Keywords: Ceria nanoparticles, Polysulfone, Membrane, hydroxyl radical scavenging, peroxidase-like activity, γ-radiation

Suggested Citation

Bedar, Amita and G Singh, Beena and K Tiwari, Pradip and C Bindal, Ramesh and Kar, Soumitra, Kinetics Studies on Free Radical Scavenging Property of Ceria in Polysulfone-Ceria Radiation Resistant Mixed-matrix Membrane (February 7, 2020). Available at SSRN: https://ssrn.com/abstract=3709689 or http://dx.doi.org/10.2139/ssrn.3709689

Amita Bedar (Contact Author)

Homi Bhabha National Institute / Bhabha Atomic Research Centre ( email )

India

Beena G Singh

Homi Bhabha National Institute / Bhabha Atomic Research Centre ( email )

India

Pradip K Tiwari

Homi Bhabha National Institute / Bhabha Atomic Research Centre ( email )

India

Ramesh C Bindal

Homi Bhabha National Institute / Bhabha Atomic Research Centre ( email )

India

Soumitra Kar

Homi Bhabha National Institute / Bhabha Atomic Research Centre ( email )

India

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