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All Journal Aceh International Journal of Science and Technology ASEAN Journal for Science and Engineering in Materials Kwaghe International Journal of Sciences and Technology Open Access DRIVERset
Habila, James Dama
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Green Synthesis and Characterization of Zinc Oxide Nanoparticles using Corchorus olitorius Leaf Extract Kpega, Tyosue Christopher; Habila, James Dama; Okon*, Idongesit Edem; Ekwumemgbo, Patricia Adamma
Aceh International Journal of Science and Technology Vol 12, No 3 (2023): December 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.3.34013

Abstract

Green synthesis of metal oxide nanoparticles has gained prominence in recent years, resulting from the absence of toxic chemicals, low energy requirement, and eco-friendliness. This paper reports the green synthesis of zinc oxide nanoparticles (ZnO-NPs) using plant extract as a reducing agent. The ZnO-NPs were synthesized using Corchorus olitorius leaf extract and zinc acetate dihydrate, Zn (CH3COO)2.2H2O as precursor. The synthesized ZnO-NPs were characterized by the application of UVVis spectroscopy, Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), Energy Dispersive X-ray Spectroscopy (EDX) and Fourier Transform Infrared Spectroscopy (FTIR). UV-vis indicated the reduction of zinc acetate dihydrate into ZnO-NPs by the leave extract. XRD and TEM revealed that the average size of the synthesized ZnO-NPs was 22 nm. The XRD pattern showed the hexagonal wurtzite crystalline nature of the synthesized ZnO-NPs. The elemental composition obtained from EDX showed that the synthesized ZnO-NPs are primarily composed of three elements: Zn (75.20 %), O (20.48.7%), and C (4.32). Examination of stretching and bonding in the ZnO-NPs using FT-IR revealed the presence of Zn-O bonding at 430.37403.93 cm-1.
Photocatalytic Removal of Toxic Metals from Tannery Wastewater using Green Synthesized Zinc Oxide Nanoparticles Kpega, Tyosue Christopher; Habila, James Dama; Okon, Idongesit Edem; Ekwumemgbo, Patricia Adama
ASEAN Journal for Science and Engineering in Materials Vol 5, No 1 (2026): AJSEM: Volume 5, Issue 1, March 2026
Publisher : Bumi Publikasi Nusantara

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Abstract

Water is an important natural resource and is vital to all living organisms. However, increased industrialization and urbanization have led to water pollution. This research aimed at removing some toxic metals from tannery wastewater using already green synthesized zinc oxide nanoparticles (ZnO-NPs). The treatment method used was photocatalytic degradation. The concentrations of Cr, Cu, and Pb in the wastewater were found to be above the standard recommended by WHO and the National Environmental Standards Regulatory and Enforcement Agency (NESREA) while those of Ni, Mn, and Co were within the acceptable limit. The photocatalytic degradation using the ZnO-NPs was effective in the treatment of the metals: Cr, Co, Cu, Mn, Ni, and Pb as their concentration in the treated tannery wastewater were significantly lower than that in the untreated wastewater except for Mn. Based on the results, photocatalytic degradation using green synthesized ZnO-NPs has proven to be a viable method for the degradation of tannery wastewater.
Degradation of Brilliant Blue Dye (FCF) in Wastewater Using Visible Light Induced Activity of α-Haematite Nanoparticle Synthesized via Green Route AttahDaniel, Emmanuel Ba’aku; Kamba, Emmanuel A; Mohammad, Mohammad Ziyaulhaq; Habila, James Dama
Kwaghe International Journal of Sciences and Technology Vol 3 No 1 (2026): Kwaghe International Journal of Sciences and Technology
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/kijst.v3i1.8289

Abstract

This study investigated the photocatalytic activity of α-Fe2O3 nanoparticles (hematite) synthesized from the extract of Senna siamea flower and characterized using Transmission Electron Microscopy (TEM), Thermogravimetric Analysis / Differential Thermal Analysis (TGA/DTA), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) Analysis. The photocatalytic activity of the α-Fe2O3 nanoparticles was measured by degradation of Brilliant Blue Dye. The α-Fe2O3-S.S nanoparticles showed excellent photocatalytic performance, an optimum photocatalytic degradation 82% was obtained within 150 minutes intervals at loading catalyst dose of 150 mg at a concentration of 15 ppm. Thus, the catalyst demonstrated efficient degradation capacity of Brilliant Blue dye in wastewater.
Degradation of Brilliant Blue Dye (FCF) in Wastewater Using Visible Light Induced Activity of α-Haematite Nanoparticle Synthesized via Green Route AttahDaniel, Emmanuel Ba’aku; Kamba, Emmanuel A; Mohammad, Mohammad Ziyaulhaq; Habila, James Dama
Kwaghe International Journal of Sciences and Technology Vol 3 No 1 (2026): Kwaghe International Journal of Sciences and Technology
Publisher : Darul Yasin Al Sys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/kijst.v3i1.8289

Abstract

This study investigated the photocatalytic activity of α-Fe2O3 nanoparticles (hematite) synthesized from the extract of Senna siamea flower and characterized using Transmission Electron Microscopy (TEM), Thermogravimetric Analysis / Differential Thermal Analysis (TGA/DTA), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) Analysis. The photocatalytic activity of the α-Fe2O3 nanoparticles was measured by degradation of Brilliant Blue Dye. The α-Fe2O3-S.S nanoparticles showed excellent photocatalytic performance, an optimum photocatalytic degradation 82% was obtained within 150 minutes intervals at loading catalyst dose of 150 mg at a concentration of 15 ppm. Thus, the catalyst demonstrated efficient degradation capacity of Brilliant Blue dye in wastewater.
Co-Authors AttahDaniel, Emmanuel Ba’aku Ekwumemgbo, Patricia Adama Ekwumemgbo, Patricia Adamma Kamba, Emmanuel A Kpega, Tyosue Christopher Mohammad, Mohammad Ziyaulhaq Okon*, Idongesit Edem Okon, Idongesit Edem