Photocatalytic and antibacterial activities of green-mediated Khaya senegalensis-silver nanoparticles and oxidized carbon nanotubes
Keywords:
Khaya senegalensis, silver nanoparticles, carbon nanotubes, photocatalytic, antibacterial activityAbstract
This study investigated the photocatalytic and antibacterial activities of plant-mediated silver nanoparticles (AgNPs) from a medicinal plant extract of Khaya senegalensis (K. senegalensis) and oxygen functionalized carbon nanotubes (oCNTs), respectively. The CNTs were functionalized using acid treatment. The green synthesized AgNPs from K. senegalensis (KS-AgNPs) and oCNTs were characterized by UV–Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), transmission emission microscopy (TEM), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The formation of KS-AgNPs was confirmed by the UV–Vis absorption spectra, which showed an absorption band at 427 nm with a color change from yellow to brown. The morphology of KS-AgNPs was spherical in shape, with an average particle size of 9.30 nm. The FTIR analyses revealed distinctive functional groups, such as, hydroxyl (O-H), amines (N-H), and carbonyl (C-O), which were directly involved in the synthesis and stability of AgNPs. The XRD spectra was distinctive with five intense peaks at 2theta angles of 38.12°, 44.28°, 64.43°, 77.48°, and 81.54o while oCNTs gave intense peaks at 2theta angles of 26.43o, 42.36o, 44.46o, 54.51o, 59.98o, and 77.40o. The photocatalytic property of green synthesized KS-AgNPs was determined to be 40.7 % higher than that of oCNTs when applied for treatment of industrial waste water. The ability of green-mediated KS-AgNPs to inhibit against gram-positive and gram-negative bacteria was observed to be that gram (-) bacteria (E. coli) was more susceptible to KS-AgNPs than the gram (+) bacteria (S. aureus), in which case their susceptibility was least in oCNTs for both bacteria, respectively.
Published
How to Cite
Issue
Section
Copyright (c) 2023 A. H. Labulo, A. D. Terna, O. F. Oladayo, H. Ibrahim, N. S. Tanko, R. A. Ashonibare, J. D. Opeyemi, Z. Tywabi-Ngeva

This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
Similar Articles
- Ajit Kumar, Pushap Lata Sharma, Praveen Lata, Deepak Bains, Pankaj Thakur, Effect of magnetic field on the onset of thermal convection in a Jeffery nanofluid layer saturated by a porous medium: free-free, rigid-rigid and rigid-free boundary conditions , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 2, May 2024
- Omodele Olubi, Ebeneze Oniya, Taoreed Owolabi, Development of Predictive Model for Radon-222 Estimation in the Atmosphere using Stepwise Regression and Grid Search Based-Random Forest Regression , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 2, May 2021
- F. U. Salifu, O. A. Oladipo, E. O. Ebock, B. Nava, Deep neural network model for vertical total electron content prediction at a single low latitude station , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 4, November 2025
- T. O. Roy-Layinde, K. O. Olonade, K. A. Omoteso, H. T. Oladunjoye, B. A. Oyero, J. A. Laoye, Exploring vibrational resonance in biophysical systems with fractional-order damping , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 3, August 2025
- T. W. David, B. J. Adekoya, C. M. Michael, S. A. Adekoya, O. A. Adenuga, S. O. Kareem, H. T. Oladunjoye, A. E. Ajetunmobi, O. T. Williams, D. T. Ogundele, A Study of the Relationship Between Southward Bz > -10 nT and Storm Time Disturbance Index During Solar Cycle 23 , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 4, November 2022
- Samsudeen Olanrewaju Azeez, Akeem Adebayo Jimoh, Ismaila Olalekan Saheed, Kabir Opeyemi Otun, Aliru Olajide Mustapha, Folahan Amoo Adekola, Optimization by Box Behnken Design for Eosin Yellow Dye Removal from Aqueous Medium using Date Palm Seeds-Porous Carbon@TiO2 Blend , Journal of the Nigerian Society of Physical Sciences: Volume 4, Issue 2, May 2022
- Abiola Olawale Ilori, Funmilola Mabel Ojo, Kayode Olayele Karigidi, Radiometric investigation of naturally occurring radionuclides in soils from Igbokoda, a coastal area in Ondo State Nigeria , Journal of the Nigerian Society of Physical Sciences: Volume 6, Issue 4, November 2024
- A. A. Faremi, S. S. Oluyamo, K. D. Adedayo, Y. A. Odusote, O. I. Olusola, Influence of Silicon Nanoparticle on the Electrical Properties of Heterostructured CdTe/CdS thin films based Photovoltaic Device , Journal of the Nigerian Society of Physical Sciences: Volume 3, Issue 3, August 2021
- Yazid Amri, Mohammed Abdelkader Belalem, Nedjimi Mohammed Said, Guerguer Louiza, Salah Tlili, Corrosion inhibition of carbon steel XC70 in 1M HCl solution using Balanite Aegyptiaca extracts as an eco-friendly inhibitor , Journal of the Nigerian Society of Physical Sciences: Volume 7, Issue 4, November 2025
- Abdulwasiu Abdurrahman, Saidu Muhammad Waziri, Olusegun Ayoola Ajayi, Fadimatu Nyako Dabai, Optimization of Potassium Carbonate-based DES as Catalyst in the Production of Biodiesel via Transesterification , Journal of the Nigerian Society of Physical Sciences: Volume 5, Issue 1, February 2023
You may also start an advanced similarity search for this article.

