Enhanced Photocatalytic Activity and Electrochemical Behaviour Towards Hg(II) of CeO2:Ag Nanocomposite

CeO 2 and CeO 2 :Ag nanocomposite were synthesized using succinic acid as a fuel by a simple solution combustion method. This method neither demands surfactants nor long reaction time. Synthesized materials were identified through several analytical tools such as photoluminescence spectroscopy, Four...

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Bibliographic Details
Published in:Journal of electronic materials 2020-12, Vol.49 (12), p.7568-7580
Main Authors: Jayalakshmi, T., Prashanth, S. A., Alharthi, Fahad A., Nagaraju, G.
Format: Article
Language:English
Subjects:
Aqueous solutions
Catalytic activity
Cerium oxides
Characterization and Evaluation of Materials
Chemical sensors
Chemical synthesis
Chemistry and Materials Science
Dyes
Electrochemical analysis
Electronics and Microelectronics
Fourier transforms
Glassy carbon
Infrared analysis
Instrumentation
Light irradiation
Materials Science
Mercury compounds
Nanocomposites
Nanomaterials
Nanoparticles
Optical and Electronic Materials
Photocatalysis
Photodegradation
Photoluminescence
Reaction time
Silver
Solid State Physics
Spectrum analysis
Succinic acid
Ultraviolet radiation
Ultraviolet spectroscopy
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Summary:CeO 2 and CeO 2 :Ag nanocomposite were synthesized using succinic acid as a fuel by a simple solution combustion method. This method neither demands surfactants nor long reaction time. Synthesized materials were identified through several analytical tools such as photoluminescence spectroscopy, Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, scanning electron microscopy and x-ray diffraction. The photocatalytic activity of prepared nanomaterials were investigated by the photodegradation of trypan blue dye by varying the initial dye concentration and catalyst dosage. The result revealed that CeO 2 :Ag nanocomposite have shown the better photocatalytic activity than the CeO 2 nanoparticle at pH 5 under ultraviolet light irradiation. Furthermore, CeO 2 :Ag nanocomposite is immobilized and electrically wired via immobilization upon glassy carbon electrodes to permit the creation of CeO 2 :Ag nanocomposite electrochemical sensor, which has been successfully evaluated for sensing Hg(II) at nano-molar (nM) levels in model aqueous solutions across dissimilar pulse anodic striping voltammetry. Graphic Abstract
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-020-08466-3