ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Synthesis and characterisation of graphene oxide decorated gold nano particles and their application towards antibacterial activity

A. Shalini, K. Priya, S. Kothai, K. Pandian, G. Anbalagan, and V. Jaisankar

Department of Chemistry, Presidency College (Autonomous), Chennai, India

E-mail: vjaisankar@gmail.com

Received: 15 August 2021  Accepted: 14 July 2022

Abstract:

Graphene oxide coated gold nano particles are emerging materials in many applications because of their distinctive properties. In this work, we have prepared a very simple and eco-friendly method for the synthesis of graphene oxide (GO) and graphene oxide decorated gold nano particles (GO–Au NPs). The spectral, and morphological characteristics were analysed using various instrumental analysis. Also, the investigation deals with the screening of antibacterial activity of graphene oxide, gold nano particles and the graphene oxide decorated Gold NPs against Gram-positive bacterial strain Staphylococcus aureus and Gram-negative bacterial strain Eschrichia coli by disc diffusion test and minimum inhibitory concentration. It was observed that the hybrid graphene oxide decorated Gold NPs showed better antibacterial activity than the other two tested components.

Graphical abstract

Keywords: Graphene oxide (GO); Graphene oxide–gold nano particles (GO–Au NPs); Antibacterial activity; Bacterial strain Staphylococcus aureus; Bacterial strain E. coli; Disc diffusion method; Minimum inhibitory concentration (MIC)

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02375-x

Chemical Papers 76 (11) 6861–6867 (2022)