Facile green synthesis of Molybdenum oxide nanoparticles using Centella Asiatica plant: Its photocatalytic and electrochemical lead sensor applications

K.M. Mamatha; V. Srinivasa murthy; C.R. Ravikumar; H.C. Ananda Murthy; V.G. Dileep Kumar; A. Naveen Kumar; A.A. Jahagirdar

Sensors International (Jan 2022)

Facile green synthesis of Molybdenum oxide nanoparticles using Centella Asiatica plant: Its photocatalytic and electrochemical lead sensor applications

K.M. Mamatha,
V. Srinivasa murthy,
C.R. Ravikumar,
H.C. Ananda Murthy,
V.G. Dileep Kumar,
A. Naveen Kumar,
A.A. Jahagirdar

Affiliations

K.M. Mamatha: Department of Chemistry, Dayananda Sagar University, Bangalore, 560078, India; Department of Chemistry, Dr. Ambedkar Institute of Technology, Bangalore, 560078, India
V. Srinivasa murthy: Department of Chemistry, Dayananda Sagar University, Bangalore, 560078, India; Corresponding author.
C.R. Ravikumar: Research Centre, Department of Chemistry, East West Institute of Technology, Bangalore, 91, India; Corresponding author.
H.C. Ananda Murthy: Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University, P.O. Box, 1888, Adama, Ethiopia
V.G. Dileep Kumar: Department of Chemistry, PES University, 100 ft. Ring Road, BSK 3rd Stage, Bangalore, 560085, Karnataka, India
A. Naveen Kumar: Research Centre, Department of Chemistry, East West Institute of Technology, Bangalore, 91, India
A.A. Jahagirdar: Department of Chemistry, Dr. Ambedkar Institute of Technology, Bangalore, 560078, India

Journal volume & issue: Vol. 3
p. 100153

Abstract

Read online

The molybdenum oxide nanoparticles (MoO3 NPs) have been successfully synthesized via green combustion method using Centella asiatica plant powder. The powder x-ray diffraction (PXRD), Fourier transform infrared spectroscopic (FTIR), scanning electron microscopic (SEM) and diffuse reflectance spectroscopic (DRS) techniques were used to characterize the MoO3 nanoparticles. The PXRD patterns of the sample revealed pure hexagonal phase. The Scherrer's method was employed to find the crystallite size of the synthesized material and the result obtained was confirmed by the TEM analysis. The optical energy band gap value (Eg) of the sample was calculated using the Tauc relation, and it was found to be around 3.41 eV. The photocatalytic degradation of MoO3 NPs on Direct Green (DG) and Navy Blue (NB) dye was evaluated under UV light irradiation. The electrochemical study of prepared electrode with graphite powder in 0.1 M KOH electrolyte solution displayed superior redox potential output as intended by cyclic voltammetric and amperometric studies, where the material was employed for its sensing abilities such as a highly toxic metal like lead.

Published in Sensors International

ISSN: 2666-3511 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://www.keaipublishing.com/en/journals/sensors-international/

About the journal

Abstract

Keywords