Enhanced efficiency of photocatalytically synthesised Co3+/Co2+-incorporated CeO2/SnO2 nanocomposite and supercapacitor studies

The photochemical reduction approach, distilled H2O with PriOH as the solvent medium, was used to create and characterise the conversion of Co3+ to Co2+ integrated on CeO2/SnO2. The PXRD, IR, SEM, HR-TEM, VSM, and XPS results show that the materials generated have appropriate crystallisation form an...

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Bibliographic Details
Published in:RSC advances 2024-01, Vol.14 (6), p.4153-4164
Main Authors: Silambarasan, R, Uttej Siva Sai Sundar Perisetti, Pavalamalar, S, Anbalagan, K
Format: Article
Language:English
Subjects:
Catalytic activity
Cerium oxides
Chemistry
Cobalt
Crystallization
Degradation
Electrochemical analysis
Electrode materials
Energy storage
Nanocomposites
Photocatalysis
Reaction mechanisms
Stability analysis
Storage systems
Tin dioxide
Transport rate
Ultraviolet radiation
X ray photoelectron spectroscopy
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Summary:The photochemical reduction approach, distilled H2O with PriOH as the solvent medium, was used to create and characterise the conversion of Co3+ to Co2+ integrated on CeO2/SnO2. The PXRD, IR, SEM, HR-TEM, VSM, and XPS results show that the materials generated have appropriate crystallisation form and retain the hollow spherical structure of Co–CeO2/SnO2. The performance of several UV-light energetic photocatalysts and the reaction pathways for inorganic complex degradation are addressed, emphasising the main elements contributing to their mineralisation. Reaction mechanisms, identification and quantification of degradation intermediates, and effects of reactive active species were described and analysed for each modelled target inorganic pollutant category. The ternary (Co3+/Co2+)/CeO2/SnO2 materials were hypothesised to improve the photocatalytic activity by increasing the transport rate of eCB− impurities as a result of accelerating the practical separation of electron–hole (e−/h+) pairs. Then, it exhibits high cycling stability by successfully reducing the pulverisation of Co–CeO2/SnO2 electrode materials due to volume expansion and a high specific capacity of 827 F g−1(1 A g−1) while maintaining a high current density of 5 A g−1. GCD and impedance spectroscopy studies were also carried out to analyse charge–discharge cycles and sample stability. This exceptional electrochemical performance suggests that Co–CeO2/SnO2 are promising for high-performance energy storage systems.
ISSN:2046-2069
2046-2069
DOI:10.1039/d3ra07947c