Sebusi Odisitse

Scopus Publications

Discarded face masks activated carbon for supercapacitor applications
Gorata P. Morake, Robert O. Gembo, Sebusi Odisitse, Cecil K. King’ondu
MRS Advances, 2026
Fabrication of ZnO nanoparticles using marula (Sclerocarya birrea) leaf extract for catalytic degradation of rhodamine 6 G and methylene blue dyes under UV light irradiation
Tsholofelo Khao, Robert O. Gembo, Sebusi Odisitse, Cecil K. King'ondu
Next Materials, 2025
This study investigated the synthesis of zinc oxide nanoparticles (ZnO NPs) using marula leaf extract. Boiling water was used to extract the active marula ingredients, which were then processed hydrothermally with zinc precursor to synthesize ZnO NPs. Under UV light irradiation, the produced ZnO NPs were used to simultaneously degrade two dyes: methylene blue (MB) and rhodamine 6 G (R6G) in a binary dye mixture. The XRD analysis showed that pure and crystalline structures of ZnO NPs were fully formed after calcination at 350 ℃. Raman spectroscopy was employed to determine the materials’ molecular functional groups using the fingerprint regions on the spectra. The distinctive peaks at 318, 429, and 566 cm−1 were used to identify ZnO NPs. SEM showed that ZnO NPs had both sphere-like and agglomerated nanorod structures and BET analysis showed that the ZnO materials had a an average pore size of 2818.35 (Å) with a pore volume of 0.008846 cm3/g and a surface area of 21.29 ± 0.07 m2/g. CT350-ZnO NPs afforded simultaneous MB and R6G degradation efficiencies of 99 and 98 %, respectively, after a time interval of 75 min. The degradation efficiency increased with the catalyst amount, contact time, and reaction temperature and decreased as the original concentration was raised. This study shows that ZnO NPs have a great deal of promise for environmental and public health protection because of their high effectiveness in degrading binary dye combinations when exposed to UV light.
The role of ancillary and anchoring ligands in transition metal complexes for solar energy production
Chemical Review and Letters, 2025
Exploring the feasibility of using spent rooibos (Aspalathus linearis) tea waste–derived activated carbon for supercapacitor applications
Robert O. Gembo, Gorata P. Morake, Bonface O. Orero, Sebusi Odisitse, Titus A. M. Msagati, Cecil K. King’ondu
Ionics, 2025
Biomass Nanoarchitectonics of abattoir waste to high coulombic efficient mesoporous carbon materials for supercapacitors
Mavis K. Gabookolwe, Oluwatayo R. Onisuru, Sebusi Odisitse, Reinout Meijboom, Cosmas Muiva, Cecil K. King'ondu
Journal of Energy Storage, 2024
The beneficiation of asphalt waste through conversion into an efficient activated carbon adsorbent for diazinon pesticide, optimized through response surface methodology
Robert O. Gembo, Sebusi Odisitse, Titus A. M. Msagati, Cecil K. King'ondu
Rsc Sustainability, 2024
This study reports on converting waste into an activated carbon material for the efficient removal of diazinon pesticide (DP).
Transforming waste resources into efficient activated carbon for energy storage and environmental remediation: a comprehensive review
R. O. Gembo, S. Odisitse, C. K. King’ondu
International Journal of Environmental Science and Technology, 2024
Cobalt pyridyl complexes against drug-resistant bacteria: Synthesis, characterization, antibacterial properties, mode of action, and molecular docking studies
James T.P. Matshwele, Sebusi Odisitse, Ofentse Mazimba, Taye B. Demissie, Moses O. Koobotse, Daphne T. Mapolelo, Keagile Bati, Lebogang G. Julius, David O. Nkwe, Mosimanegape Jongman, Florence M. Nareetsile
Inorganica Chimica Acta, 2024
Unlocking the valorization potential of Rooibos tea waste-derived activated carbon in the adsorptive removal of remazol brilliant blue R dye
Robert O. Gembo, Sebusi Odisitse, Titus A.M. Msagati, Cecil K. King’ondu
Next Sustainability, 2024
In this work, we report the use of spent rooibos tea leaves to fabricate activated carbon and use it to adsorptively remove the toxic Remazol Brilliant Blue R (RBBR) from the aqueous solution. The resulting activated carbon (SRTLAC) was characterized by Brunauer-Emmett-Teller N2 adsorption/desorption for surface area analysis, scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray diffraction for morphological, functional group and crystallinity analyses. A Taguchi design approach was employed to determine the optimal conditions for the RBBR adsorption onto SRTLAC. Among the process variables studied, the sorbent dosage, initial concentration, and pH predominantly affected the removal capacity. The maximum removal of 246.5 mg/g was attained at the highest initial RBBR concentration of 120 mg/L, solution pH of 2, sorbent dosage of 20 mg, and agitation time of 110 min. The analysis of variance results showed that RBBR initial concentration contributed the most significant percentage (95.33 %) towards the removal uptake, highlighting its considerable impact. The adsorption data collected at various concentrations (20 – 120 mg/L) were modelled using three non-linear regression isotherms and kinetic models. The Langmuir isotherm model provided the optimal fit for adsorption, suggesting a monolayer and homogenous sorption system with a maximum capacity of 491.38 mg/g. Meanwhile, the pseudo-2nd order kinetic models accurately elucidated the sorption mechanism. The RBBR species interacted with the SRTLAC functional groups via hydrogen bonding, dipole-dipole interactions, and ion-dipole forces. Therefore, SRTLAC presents a powerful tool for ridding the environment of RBBR dye pollution.
Nickel mixed ligand complexes against drug resistant bacteria: Synthesis, characterization, antibacterial activities and molecular docking studies
Sebusi Odisitse, James T.P. Matshwele, Ofentse Mazimba, Taye B. Demissie, Morongwa Moseki, Lebogang G. Julius, Mosimanegape Jongman, Florence Nareetsile
Results in Chemistry, 2023
Five new nickel complexes of the type NiCl2L2 where (L is 4-picolylchloride (4PY), pyridin-4-ylmethyl 4-nitrobenzoate (L1), 4-(pyridine-4-ylmethoxy)aniline (L2), pyridin-4-ylmethyl 4-aminobenzoate (L3) and 4-((4-nitrophenoxy)methyl)pyridine (L4)) were synthesized, characterized, and evaluated for their ability to inhibit bacterial growth. Four of the complexes were synthesized using a green method of co-grinding using a pestle and mortar. All the complexes synthesized by the mechanochemical method were recovered at favorable yields between 70 to 78%, while Ni4PY was recovered at 47.1%. The thermal studies showed the different transformations of the complexes and their thermal stability through Differential Scanning Calorimetry (DSC), while Thermogravimetric analysis (TGA) showed the loss of different components of the complexes cementing their successful synthesis. FTIR data revealed all the significant functional groups originating from the ligands in the new complexes. The characterization results demonstrated the successful synthesis of these complexes. Electronic spectra and magnetic susceptibility studies showed all the complexes to be d8 tetrahedral, except NiL1 which showed a partial d8 octahedral geometry. To better understand the biological activities, molecular docking calculations against the PBP2a proteins from S. aureus, OmpK36 proteins from K. pneumoniae, and DHPS proteins were also carried out. According to the results, the active nickel complexes should have had better activity than the control drug AgSD, however their activity was decreased due to solubility issues.
Synthesis, characterization, antibacterial properties, mode of action and molecular docking studies of copper pyridyl complexes against drug-resistant bacteria
James T.P. Matshwele, Sebusi Odisitse, Taye B. Demissie, Moses O. Koobotse, Ofentse Mazimba, Daphne Mapolelo, Keagile Bati, Lebogang G. Julius, David O. Nkwe, Mosimanegape Jongman, Florence Nareetsile
Inorganic Chemistry Communications, 2023
Reduction of Bacterial Folic Acid Production and Cell Membrane Disruption of Klebsiella pneumoniae by Two Amino Substituted Pyridyl Compounds: An Experimental and In Silico Approach
James T. P. Matshwele, Mosimanegape Jongman, Taye B. Demissie, Moses O. Koobotse, Ofentse Mazimba, Daphne Mapolelo, Keagile Bati, Lebogang G. Julius, David O. Nkwe, Florence Nareetsile, Sebusi Odisitse
Chemistry Africa, 2023
Thermogravimetric-mass spectrometry study of pyrolysis of Botswana-Morupule coal: kinetic parameters determination using iso-conversional and model fitting methods
Kgalalelo P. Kgatlane, Sebusi Odisitse, Casper Gate, James Darkwa, Isaac N. Beas
Reaction Kinetics Mechanisms and Catalysis, 2023
Synthesis and Crystal Structure of Pyridin-4-ylmethyl 4-Aminobenzoate, C13H12N2O2
James T. P. Matshwele, Sebusi Odisitse, Ofentse Mazimba, Lebogang G. Julius, Thuto Mogatwe, Florence Nareetsile
Crystallography Reports, 2022
Physicochemical properties, crystal structures, antibacterial properties and in silico characterization of cobalt and copper metal complexes and their acido complex crystals with 4-chloromethylpyridine
James T.P. Matshwele, Florence Nareetsile, Masego Tebogo, Ofentse Mazimba, Fortunate P. Masita, Lebogang Julius, Mosimanegape Jongman, Sebusi Odisitse
Polyhedron, 2022
Synergistic power conversion efficiency contribution of counter electrode components in Dye Sensitized Solar Cells
Paul K. Ngumbi, Simon W. Mugo, James M. Ngaruiya, Sebusi Odisitse, Cecil K. King'ondu
Optical Materials, 2022
Metallo-Drugs as Promising Antibacterial Agents and Their Modes of Action
Florence Nareetsile, James T.P. Matshwele, Sebusi Odisitse
Journal of Medicinal and Chemical Sciences, 2022
Crystal Structure of Pyridin-4-ylmethyl 4-Nitrobenzoate, C13H10N2O4
James T. P. MATSHWELE, Sebusi ODISITSE, Ofentse MAZIMBA, Florence NAREETSILE, Lebogang G. JULIUS, Dalitso KEITUMETSE
X Ray Structure Analysis Online, 2022
Synthesis, characterization of nitro or amino substituted pyridyl ligands bridged by an ester or ether bond, and their antibacterial assessment against drug resistant bacteria
James T.P. Matshwele, Mosimanegape Jongman, Moses O. Koobotse, Ofentse Mazimba, Daphne Mapolelo, David O. Nkwe, Florence Nareetsile, Sebusi Odisitse
Results in Chemistry, 2022
A computational study of the s2 state in the oxygen-evolving complex of photosystem ii by electron paramagnetic resonance spectroscopy
Bernard Baituti, Sebusi Odisitse
Molecules, 2021
Comparison of CaO-NPs and Chicken Eggshell-Derived CaO in the Production of Biodiesel from Schinziophyton rautanenii (Mongongo) Nut Oil
Keene Carlvin Mmusi, Sebusi Odisitse, Florence Nareetsile
Journal of Chemistry, 2021
Synthesis of bismuth oxyhalide (BiOBrzI(1-z)) solid solutions for photodegradation of methylene dye
Robert O. Gembo, Ochieng Aoyi, Stephen Majoni, Anita Etale, Sebusi Odisitse, Cecil K. King'ondu
AAS Open Research, 2021
Antibacterial Activity of 2-Picolyl-polypyridyl-Based Ruthenium (II/III) Complexes on Non-Drug-Resistant and Drug-Resistant Bacteria
James T. P. Matshwele, Sebusi Odisitse, Daphne Mapolelo, Melvin Leteane, Lebogang G. Julius, David O. Nkwe, Florence Nareetsile
Bioinorganic Chemistry and Applications, 2021
Synthesis of Mixed Ligand Ruthenium (II/III) Complexes and Their Antibacterial Evaluation on Drug-Resistant Bacterial Organisms
James T. P. Matshwele, Florence Nareetsile, Daphne Mapolelo, Pearl Matshameko, Melvin Leteane, David O. Nkwe, Sebusi Odisitse
Journal of Chemistry, 2020
Potentiometric and blood plasma simulation studies of nickel(ii) complexes of Poly(amino)amido pentadentate ligands: Computer aided metal-based drug design
Sebusi Odisitse, Graham E. Jackson
Bioinorganic Chemistry and Applications, 2014
In vitro and in vivo studies of the dermally absorbed Cu(II) complexes of N5O2 donor ligands - Potential anti-inflammatory drugs
Sebusi Odisitse, Graham E. Jackson
Inorganica Chimica Acta, 2009
In vitro and in vivo studies of N,N′-bis[2(2-pyridyl)-methyl]pyridine-2,6-dicarboxamide-copper(II) and rheumatoid arthritis
Sebusi Odisitse, Graham E. Jackson
Polyhedron, 2008
Chemical speciation of copper(II) diaminediamide derivative of pentacycloundecane - A potential anti-inflammatory agent
Sebusi Odisitse, Graham E. Jackson, Thavendran Govender, Hendrik G. Kruger, Amith Singh
Dalton Transactions, 2007
Addition complexes of tetrakis(isopropylisocyanide)-Cobalt(II) perchlorate with nitrogen bases
Clifford A. L. Becker, Sebusi Odisitse
Synthesis and Reactivity in Inorganic and Metal Organic Chemistry, 2000

Sebusi Odisitse

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Scopus Publications