Eur. Phys. J. Plus (2016) 131: 158
https://doi.org/10.1140/epjp/i2016-16158-7

Regular Article

Aloe vera mediated hydrothermal synthesis of reduced graphene oxide decorated ZnO nanocomposite: Luminescence and antioxidant properties

¹ Department of Physics, Channabasaveshwara Institute of Technology, VTU affiliated, 572 216, Gubbi, India
² Prof. C.N.R. Rao Centre for Advanced Materials, Tumkur University, 572 103, Tumkur, India
³ Department of Physics, Sree Siddaganga College for Women, 572 103, Tumkur, India
⁴ Department of Chemistry, Tumkur University, 572 103, Tumkur, India
⁵ Department of Physics, BMS Institute of Technology and Management, VTU affiliated, Avalahalli, 560 064, Bangalore, India
⁶ Dayananda Sagar University, Shavige Malleshwara Hills, Kumara swamy Layout, 5690 078, Bangalore, India

^* e-mail: bhushanvlc@gmail.com

Received: 3 September 2015
Accepted: 3 April 2016
Published online: 20 May 2016

Abstract

A zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposite was fabricated by facile hydrothermal route using Aloe vera gel as surfactant. The PL emission spectrum of the ZnO/rGO composite consists of four peaks at around 380, 394, 449 and 465nm. The PL intensity is found to diminish in ZnO-rGO composites rather than in pure ZnO, which was attributed to electron transfer from ZnO to rGO. A single intense glow curve was recorded in rGo-ZnO for a dose range of 1-8kGy. The TL response curve of rGO-ZnO is found to be a simple glow curve structure, linear dependence over a dose range of 1-8kGy. The obtained ZnO/rGO composite could provide a facile and eco-friendly method for the development of graphene-based nanocomposites with promising applications in radiation dosimetry and antioxidant activities.