Electrochemical sensor of carboxymethyl cellulose and photocatalytic degradation of Navy Blue dye by sonochemically synthesized Titanium oxide nanoparticles

K.M. Mamatha; V. Srinivasa Murthy; B.M. Thammanna; T. Naveen Kumar; A.A. Jahagirdar; A. Naveen Kumar; Murthy Muniyappa; C.R. Ravikumar; H.C. Ananda Murthy

Sensors International (Jan 2023)

Electrochemical sensor of carboxymethyl cellulose and photocatalytic degradation of Navy Blue dye by sonochemically synthesized Titanium oxide nanoparticles

K.M. Mamatha,
V. Srinivasa Murthy,
B.M. Thammanna,
T. Naveen Kumar,
A.A. Jahagirdar,
A. Naveen Kumar,
Murthy Muniyappa,
C.R. Ravikumar,
H.C. Ananda Murthy

Affiliations

K.M. Mamatha: Department of Chemistry, Dayananda Sagar University, Bangalore, 560078, India; Department of Chemistry, Dr. Ambedkar Institute of Technology, Bangalore, 560056, India
V. Srinivasa Murthy: Department of Chemistry, Dayananda Sagar University, Bangalore, 560078, India; Corresponding author.
B.M. Thammanna: Department of Physics, P E S College of Engineering, Mandya, 571401, Karnataka, India
T. Naveen Kumar: Department of PG Chemistry, Surana College, Autonomous Institute, Bangalore, 560004, India
A.A. Jahagirdar: Department of Chemistry, Dr. Ambedkar Institute of Technology, Bangalore, 560056, India
A. Naveen Kumar: Department of Physics, South East Asian College of Engineering and Technology, VTU, Bangalore, Karnataka, 560049, India
Murthy Muniyappa: Department of Electronics and Communications, Nagarjuna College of Engineering and Technology, Devanahalli, Bengaluru, 562110, India
C.R. Ravikumar: Research Centre, Department of Chemistry, East West Institute of Technology, Bangalore, 91, India
H.C. Ananda Murthy: Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University, P.O. Box: 1888, Adama, Ethiopia; Department of Prosthodontics, Saveetha Dental College & Hospital, Saveetha Institute of Medical and Technical Science (SIMATs), Saveetha University, Chennai, 600077, Tamil Nadu, India; Corresponding author. Department of Applied Chemistry, School of Applied Natural Sciences, Adama Science and Technology University, P.O. Box: 1888, Adama, Ethiopia.

Journal volume & issue: Vol. 4
p. 100239

Abstract

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Nanocrystalline titanium oxide nanoparticles (TiO2 NPs) were synthesized by using a low-cost sonochemical method. TiO2 NPs exhibited anatase phase and an average crystallite size of 40.64 nm, according to a powder X-ray diffraction (PXRD) investigation. SEM and TEM images revealed spherical shape, with asymmetric geometries for TiO2 NPs. The micrographs thoroughly corroborated the plate-like structure for the NPs. In order to confirm the average energy gap of TiO2 NPs, diffused reflectance spectroscopy (DRS) via Kubelka-Monk function was applied (3.66 eV). Navy blue dye was used to study the photocatalytic properties of NPs and discovered to be triggered at 590.9 nm. The photodegradation rate of NB dye decolorized up to 74.04% after 120 min of UV light exposure. The first order kinetics was indicated by a linear relationship between log C/Co and k. The demonstrated rates of photodecoloration for NB under UV light in the presence of scavengers AgNO3, ethanol, and ethylenediamine tetraacetic acid (EDTA), were found to be 65.50%, 61.46%, and 57.33%, respectively. Using the carbon paste electrodes and cyclic voltammetry (CV) in 0.1 N HCl solution, the electrochemical characteristics of the obtained sample were studied. The carboxymethyl cellulose sensor made from TiO2 NPs demonstrated a remarkable sensitivity of 0.08 A. The results showed a high recovery for lead with low% of RSD values. The TiO2 electrode is a promising electrode material for sensing applications due to its outstanding electrochemical performance.

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/

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