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Research Article Open Access

Gamma radiolytic synthesis of poly(2, 3-Epoxy-propylmethacrylate)-stabilized-gold nanoparticles: an efficient catalyst for p-nitrophenol reduction



Nilanjal Misra1*, Virendra Kumar1,2*, Swarnima Rawat1, Narender Kumar Goel1
Shubhangi A. Shelkar1, Lalit Varshney1,2


1Radiation Technology Development Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India

2Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India

Adv. Mater. Proc., 2018, 3 (4), 199-205

DOI: 10.5185/amp.2018/041

Publication Date (Web):05 April 2018

Copyright © IAAM-VBRI Press



A facile, green radiolytic route is described for the synthesis of poly (2,3-Epoxypropylmethacrylate) (PEPMA) stabilized Gold nanoparticles (PEPMA-Au-NPs) via gamma radiolytic reduction of an aqueous solution of HAuCl4 precursor ions containing EPMA as a stabilizing/capping agent. The effect of different experimental parameters, such as precursor ions and stabilizing agent concentration, gamma radiation dose and solvent polarity on the properties of Au-NPs were studied. PEPMA-Au-NPs system was characterized by UV-visible spectroscopy, TEM and particle size analysis techniques. PEPMA-Au-NPs showed characteristic Localized Surface Plasmon Resonance (LSPR) band at ~530nm. TEM analysis confirmed the formation of spherical particles with an average size of 7.6nm±3.1nm. PEPMA-Au NPs prepared under optimized conditions were employed as an efficient catalytic system to carry out the reduction of p-nitrophenol (PNP) to p-aminophenol (PAP). The reaction was observed to follow pseudo first order kinetics and demonstrated good efficiency in carrying out the catalytic reduction reaction under optimized conditions. Copyright © 2018 VBRI Press.


Gamma radiation, Gold nanoparticles, 2,3-Epoxypropylmethacrylate, Catalysis, p-nitrophenol.