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Vol. 38 No. 6 (2026): Vol. 38 Issue No 6, 2026

Copyright (c) 2026 Anusha Rachapudi, Bala Venkata Sailaja Budati, Chandra Leela Athota, Sandhya Rani Nayak, Lokesh Mudarapu, Ambika Mancha

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Plant-Assisted Synthesis of Mesoporous CuO Nanoparticles from Sesbania aculeata and their Application in Degradation of Malachite Green Dye

https://doi.org/10.14233/ajchem.2026.35664
Anusha Rachapudi
Department of Chemistry, Andhra University, Visakhapatnam-530003, India
https://orcid.org/0009-0007-1597-6283
Budati Bala Venkata Sailaja
Department of Chemistry, Andhra University, Visakhapatnam-530003, India
https://orcid.org/0000-0001-6080-1991
Athota Chandra Leela
Department of Chemistry, Andhra University, Visakhapatnam-530003, India
https://orcid.org/0009-0004-3490-0418
Sandhya Rani Nayak
Department of Chemistry, Andhra University, Visakhapatnam-530003, India
https://orcid.org/0009-0003-2582-8859
Lokesh Mudarapu
Department of Chemistry, Andhra University, Visakhapatnam-530003, India
https://orcid.org/0009-0001-7946-3512
Ambika Mancha
Department of Chemistry, Andhra University, Visakhapatnam-530003, India
https://orcid.org/0009-0005-0977-5448

Corresponding Author(s) : Budati Bala Venkata Sailaja

dr.bbvsailaja@andhrauniversity.edu.in

Asian Journal of Chemistry, Vol. 38 No. 6 (2026): Vol. 38 Issue No 6, 2026

Abstract

In this study, CuO NPs were prepared through a sustainable green synthesis approach employing Sesbania aculeata (Dhaincha) leaf extract. The phytochemical-rich extract served a dual role by facilitating the reduction of copper ions and stabilizing the formed nanoparticles, eliminating the need for external chemical reagents. The synthesised CuO NPs were investigated using XRD, UV-Vis DRS, FTIR, FESEM-EDS, TGA and BET analyses. XRD confirmed the formation of crystalline monoclinic CuO NPs with an average crystallite size of 22.6 nm. UV-Vis DRS revealed a band gap energy of 2.7 eV, confirming the successful formation of CuO NPs. FTIR spectra indicated the effective involvement of plant-derived phytochemicals in capping and stabilizing the nanoparticle surface. TGA demonstrated minimal mass loss beyond 400 ºC, demonstrating high thermal stability and purity of the synthesised CuO NPs. BET surface area revealed a characteristic Type-IV nitrogen adsorption–desorption isotherm accompanied by a well-defined hysteresis loop, confirming the mesoporous nature of the material with a specific surface area of 89.7 m2 g–1. Furthermore, the green-synthesised CuO NPs showed efficient photocatalytic degradation of malachite green dye within 100 min. This study highlights the potential of S. aculeata-mediated CuO nanoparticles as sustainable, multifunctional nanomaterials for environmental remediation and biomedical applications.

Keywords

Green synthesis Sesbania aculeata CuO NPs Photocatalytic degradation
(1)
Rachapudi, A.; Sailaja, B. B. V.; Leela, A. C.; Nayak, S. R.; Mudarapu, L.; Mancha, A. Plant-Assisted Synthesis of Mesoporous CuO Nanoparticles from Sesbania Aculeata and Their Application in Degradation of Malachite Green Dye. ajc 2026, 38, 1403-1410.
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