Plasmon Effect of Ag Nanoparticles on TiO[sub.2]/rGO Nanostructures for Enhanced Energy Harvesting and Environmental Remediation

We report Ag nanoparticles infused with mesosphere TiO[sub.2] /reduced graphene oxide (rGO) nanosheet (TiO[sub.2] /rGO/Ag) hybrid nanostructures have been successfully fabricated using a series of solution process synthesis routes and an in-situ growth method. The prepared hybrid nanostructure is ut...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2022-12, Vol.13 (1)
Main Authors: Athithya, Seenidurai, Manikandan, Valparai Surangani, Harish, Santhana Krishnan, Silambarasan, Kuppusamy, Gopalakrishnan, Shanmugam, Ikeda, Hiroya, Navaneethan, Mani, Archana, Jayaram
Format: Article
Language:English
Subjects:
Analysis
Chemical synthesis
Diffraction
Graphene
Mechanical properties
Methods
Nanoparticles
Optical properties
Oxides
Silver
Structure
Surface plasmon resonance
Titanium dioxide
X-rays
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Summary:We report Ag nanoparticles infused with mesosphere TiO[sub.2] /reduced graphene oxide (rGO) nanosheet (TiO[sub.2] /rGO/Ag) hybrid nanostructures have been successfully fabricated using a series of solution process synthesis routes and an in-situ growth method. The prepared hybrid nanostructure is utilized for the fabrication of photovoltaic cells and the photocatalytic degradation of pollutants. The photovoltaic characteristics of a dye-sensitized solar cell (DSSC) device with plasmonic hybrid nanostructure (TiO[sub.2] /rGO/Ag) photoanode achieved a highest short-circuit current density (JSC) of 16.05 mA/cm[sup.2] , an open circuit voltage (VOC) of 0.74 V and a fill factor (FF) of 62.5%. The fabricated plasmonic DSSC device exhibited a maximum power conversion efficiency (PCE) of 7.27%, which is almost 1.7 times higher than the TiO[sub.2] -based DSSC (4.10%). For the photocatalytic degradation of pollutants, the prepared TiO[sub.2] /rGO/Ag photocatalyst exhibited superior photodegradation of methylene blue (MB) dye molecules at around 93% and the mineralization of total organic compounds (TOC) by 80% in aqueous solution after 160 min under continuous irradiation with natural sunlight. Moreover, the enhanced performance of the DSSC device and the MB dye degradation exhibited by the hybrid nanostructures are more associated with their high surface area. Therefore, the proposed plasmonic hybrid nanostructure system is a further development for photovoltaics and environmental remediation applications.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano13010065