Green Synthesis of Gold Nanoparticles using Pimenta dioica Leaves Aqueous Extract and Their Application as Photocatalyst, Antioxidant, and Antibacterial Agents

Journal of Multidisciplinary Applied Natural Science Vol. 1 No. 2 (2021)

11 Pages Posted: 25 Jun 2021

See all articles by Adewale Fadaka

Adewale Fadaka

Department of Chemistry, Ibrahim Badamasi Babangida University Lapai, Lapai – 911101 (Nigeria)

Olukemi Aluko

Department of Chemistry, Ibrahim Badamasi Babangida University Lapai, Lapai – 911101 (Nigeria)

Saartjie Awawu

Department of Chemistry, Ibrahim Badamasi Babangida University Lapai, Lapai – 911101 (Nigeria)

Karim Theledi

Department of Biotechnology, University of the Western Cape, Bellville – 7530 (South Africa)

Date Written: May 9, 2021

Abstract

Green synthesis of gold nanoparticles (AuNPs) is of particular interest due to their catalytic, antioxidant, and antibacterial properties. In this study, the aqueous extract of Pimenta dioica leaves was used to synthesize AuNPs and the effective parameters were investigated. The prepared AuNPs were characterized by various techniques including UV–Vis absorption spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, Transmission Electron Microscopy (TEM), and X-ray diffractometer (XRD). The reduction and stabilization effect of the plant extract to fabricate AuNPs were explained by FTIR analysis. TEM imaging confirmed the formation of spherical-shaped AuNPs. The catalytic activity of synthesized nanoparticles was evaluated in the degradation of a Methylene Blue dye in the presence of NaBH4 as reducing agent and achieved after only two minutes. The AuNPs provided high antioxidant ability. In addition, the synthesized AuNPs showed a significant inhibitory effect against both gram-positive and gram-negative bacteria, where the zone of inhibition of 4 and 9 mm were obtained for synthesized AuNPs against S. aureus and E. coli, respectively.

Keywords: Antibacterial, Antioxidant, Catalyst, Gold Nanoparticles, Pimenta dioica

Suggested Citation

Fadaka, Adewale and Aluko, Olukemi and Awawu, Saartjie and Theledi, Karim, Green Synthesis of Gold Nanoparticles using Pimenta dioica Leaves Aqueous Extract and Their Application as Photocatalyst, Antioxidant, and Antibacterial Agents (May 9, 2021). Journal of Multidisciplinary Applied Natural Science Vol. 1 No. 2 (2021), Available at SSRN: https://ssrn.com/abstract=3867903

Adewale Fadaka (Contact Author)

Department of Chemistry, Ibrahim Badamasi Babangida University Lapai, Lapai – 911101 (Nigeria) ( email )

Nigeria

Olukemi Aluko

Department of Chemistry, Ibrahim Badamasi Babangida University Lapai, Lapai – 911101 (Nigeria) ( email )

Nigeria

Saartjie Awawu

Department of Chemistry, Ibrahim Badamasi Babangida University Lapai, Lapai – 911101 (Nigeria) ( email )

Nigeria

Karim Theledi

Department of Biotechnology, University of the Western Cape, Bellville – 7530 (South Africa) ( email )

Robert Sobukwe Road
Bellville, 7535
South Africa

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