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2000
Volume 22, Issue 1
  • ISSN: 1573-4110
  • E-ISSN: 1875-6727

Abstract

Introduction

This study introduces an innovative two-step approach to fabricate a high-performance NiO/NiO/rGO nanocomposite photocatalyst. The process synergistically combines solvothermal precursor synthesis with calcination and high-energy ultrasonic irradiation, enabling the formation of a thin NiO layer on NiO quasi-sphere nanoparticles anchored to a reduced graphene oxide (rGO) matrix.

Methods

The incorporation of rGO significantly enhances charge separation, resulting in a dramatic increase in active surface area from 17.1 m2/g to 131 m2/g, and a substantial improvement in the photocatalytic degradation of the resilient Fluorescein dye—achieving an 81% degradation rate under UV light, compared to 36% with pristine NiO.

Results

Comprehensive characterization, including FTIR, XRD, and XPS analyses, confirmed the NiO-NiO interface transformation, successful reduction of graphene oxide, and critical interactions between NiO and NiO.

Conclusion

This study highlights the promising potential of the NiO/NiO/rGO nanocomposite for environmental remediation, particularly in the degradation of persistent organic pollutants.

© 2026 Bentham Science Publishers
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/content/journals/cac/10.2174/0115734110340753240930044207
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Acoustic-assisted Fabrication, Characterization, and Photocatalytic Application of Ni2O3/NiO/rGO Nanocomposites
Current Analytical Chemistry 22, 45 (2026); https://doi.org/10.2174/0115734110340753240930044207
/content/journals/cac/10.2174/0115734110340753240930044207
/content/journals/cac/10.2174/0115734110340753240930044207
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  • Article Type:     Research Article
Keyword(s): 2D nanocomposite; Acoustic-assisted synthesis; environmental remediation; fluorescein dye; Graphene-based material; Ni2O3; Ni2O3/NiO/rGO; photodegradation; Semispherical NiO

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