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Cobalt Metal ion Doped Cerium Oxide (Co-CeO2) Nanoparticles Effect Enhanced Photocatalytic Activity

Published online by Cambridge University Press:  08 July 2020

G. Killivalavan
Affiliation:
Research & Development Centre, Department of Physics, Bharathiar University, Coimbatore-641046, Tamil Nadu (TN), India
B. Sathyaseelan*
Affiliation:
Research & Development Centre, Department of Physics, Bharathiar University, Coimbatore-641046, Tamil Nadu (TN), India Department of Physics, University College of Engineering Arni, Anna University Chennai, Arni-632326, TN, India
G. Kavitha
Affiliation:
P.G. & Research Department of Physics, A. M. Jain College, Meenambakkam-600114, Chennai, India
I. Baskarann
Affiliation:
Department of Physics, Arignar Anna Government Arts College, Cheyyar-604407, TN, India
K. Senthilnathan
Affiliation:
Photonics Division, School of Advanced Sciences, VIT University, Vellore-632014, TN, India
D. Sivakumar
Affiliation:
Dept. of Physics, Sree Krishna College of Engineering, Unai, Anaicut-632101, TN, India
N. Karthikeyan
Affiliation:
Department of Physics, Anna University, Chennai-600025, Tamil Nadu, India
E. Manikandan*
Affiliation:
Department of Physics, Government Arts and Science College, Thennangur-604408, Thiruvalluvar University, Vellore, TN, India UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, College of Graduate Studies, University of South Africa, Muckleneuk Ridge, PO Box 392, Pretoria, South Africa Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West 7129, PO Box 722, Somerset West, Western Cape Province, South Africa
M. Maaza
Affiliation:
UNESCO-UNISA Africa Chair in Nanosciences-Nanotechnology, College of Graduate Studies, University of South Africa, Muckleneuk Ridge, PO Box 392, Pretoria, South Africa Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, 1 Old Faure Road, Somerset West 7129, PO Box 722, Somerset West, Western Cape Province, South Africa
*
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Abstract

The REE (rare-earth-elements) cerium (Ce) is the most abundant earth-crust element and their oxides have great attention in the form of nanocrystalline nature with superior physical and chemical properties. Pure and Co (1%, 3% and 5%) doped CeO2 nanoparticles (NPs) synthesized by co-precipitation technique were characterized through X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV-visible spectroscopy. XRD shows face-centred-cubic (FCC) crystal symmetry with average crystallite size 6–12 nm. HRTEM exhibits almost identical cubical shaped particles with average size 4–10 nm. Tuned band-gap may be observed from UV-visible spectrum of CeO2-NPs upon Co (1%, 3% & 5%) incorporation. Enhancement of the photocatalytic activity observed for Co-doped (1%, 3% & 5%) to the degradation of methylene-blue (MB) dye under visible-light absorption.

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Articles
Copyright
Copyright © Materials Research Society 2020

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