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- ItemChapter 28 - Recent Development in techniques and technologies for analytical, spectroscopic, structural and mophorlogical characterization of modern materials of advaned application in Handbook of Emerging material for substainable enrgy.(Elsevier, 2024) Sefiu Adekunle Bello, Funsho Olaitan Kolawole, Stephen Idowu Durowaye, Sunday Wilson Balogun, Maruf Yinka Kolawole, Shuaib Ajibola Mohammed (2024)
- ItemChapter 28 - Recent developments in techniques and technologies for analytical, spectroscopic, structural, and morphological characterization of modern materials of advanced applications. In N.V. Kulkami and B.I. Kharissov (Eds), Handbook of Emerging Materials for Su stainable Energy(Elsevier, 2024) Bello, S.A., Kolawole, F.O., Durowaye, S.I., Balogun, S.W., Kolawole, M. Y., Mohammed, S.A.
- ItemChapter 9- 193 Parquetina nigrescens-date seed pod particle polymethylmethacrylate Nanocomposites for Biomedical Applications, Hybrid Polymeric Nanocomposities from Agricultural waste. Hybrid Polymeric-Nanocomposites-from-Agrictural-Waste/Bello/p/book/9780367772697.(Taylor & Francis, 2022) Bello, S.A., Balogun, S.W., Adeyemo, R.G., Adeyi, T.A., Audu, K., Olukunle, B. and Olatoye, K.K.
- ItemChapter7- 149 Delonix Regia Pod Particles Reinforced Nanocomposites: Properties Comparison between Recycled and Virgin Low–Density Polyethylene. Hybrid Polymeric Nanocomposites from Agricultural waste. Hybrid Polymeric-Nanocomposites-from-Agrictural-Waste/Bello/p/book/9780367772697.(Taylor & Francis, 2022) Bello, S. A., Adeyemo, R. G., Balogun, S. W., Adebayo, K.M and Okunola, K. A.
- ItemClay Mixtures and the Mechanical Properties of Microporous and Nanoporous Ceramic Water Filters(Journal of Materials in Civil Engineering, 2016) Ebenezer Annan; Kwabena Kan-Dapaah; Salifu T. Azeko; Kabiru Mustapha; Joseph Asare; M. G. Zebaze Kana; Wole SoboyejoThis paper presents the results of an experimental study of the effects of clay mixtures on the mechanical properties of mixed clays with controlled levels of plasticity, prior to the firing of porous ceramic water filters for water filtration. Two clays with well-characterized initial compositions (Iro and Ewuya clays) are mixed with varying proportions to control their plasticity. The mechanical properties of the mixed and fired clays are then studied using a combination of experiments and theoretical models. These include the flexural strength, fracture toughness, Young’s modulus, and thermal shock resistance of fired clay mixtures. The results show that clay mixtures with 45–60 vol.% of Iro clay and 40–55 vol.% Ewuya clay can be used to produce clay composite filters with robust mechanical properties. The thermal shock resistance of a mixed clay filter (containing 50% Iro clay and 50% Ewuya clay) is also explained using a combination of elastic and viscoelastic crack-bridging models. The regimes for effective viscoelastic crack bridging are identified by comparing the relaxation times to the thermal shock durations. The implications of the results are then discussed for the mixing of locally available clays into robust micro- and nanoporous materials for applications in clay ceramic water filters.
- ItemComputational Studies of Suitability of Triarylmethane-Coumarinsas Sensitizer for Dye Sensitized Solar Cells(Turkish Comp Theo Chem (TC&TC). 8(3), 66-73, 2024) Adeleke, R.K., Sulaiman, I., Balogun, S.W., Osunniran, W.A., Ahmed, S.K., James, O.O.
- ItemControlling the Periodic Flux of Solar Radiation into an Adobe Storage System for Onions: Part1 – Slab and Foam Roof Combination,(Nigerian Journal of Renewable Energy.10, (1&2), 2002, 108-116. Sokoto Energy Research Centre (Energy Commission of Nigeria) Usmanu Danfodiyo University, Sokoto., 2002) 11. Maduekwe, A.A.L., Balogun, S. W. and Garba, B.
- ItemDevelopment of unfired earthen building materials using muscovite rich soils and alkali activators(Case Studies in Construction Materials, 2019) Emeso Beckley Ojo; Kabiru Mustapha; Ronaldo S. Teixeira; Holmer SavastanoMost studies have focused on the alkali activation of thermally activated kaolinitic clays for the production of innovative building materials. Whilst the widespread use of these minerals may be hindered due to geographical availability; a combination of thermal activation and alkali activator solutions yields a material with high embodied energy with implications on eco-friendliness. This study presents an eco-friendly approach for the development of a low environmental impact building material using a low molarity alkali activator solution for the stabilisation of uncalcined muscovite rich soil. Influence of curing conditions on the physical, mechanical, microstructural and mineralogical properties were evaluated. Results show that alkali activation of uncalcined muscovite in the soil significantly improved the physical and mechanical properties of extruded earthen materials. Samples tested yielded compressive strength values between 9–11 MPa for varying curing regimes. The binding was mainly attributed to the formation of amorphous sodium aluminosilicate gels as a result of the partial dissolution of muscovite. These results show that low environmental impact building materials may be developed with uncalcined muscovite rich soils in developing regions around the world where these minerals are predominant for the provision of sustainable low-cost housing solutions.
- ItemEffect of Chemically Modified Banana Fibers on the Mechanical Properties of Poly-Dimethyl-Siloxane-Based Composites(Journal of Materials and Engineering Structures, 2019-05-18) Danyuo, Yiporo; Zakariyyah, Taiwao; Nasiru, Suleman; Mustapha, Kabiru; Azeko, Tahiru S.; Bello, Sefiu A.; Abade-Abugre, Miriam; Yirijor, John; Anyidoho, Victor; McBAGONLURI, FredThe study presents the mechanical properties of polymer-based composites reinforced with chemically modified banana fibers, by alkalization in different concentrations of sodium hydroxide (NaOH). The fiber weight fraction has a great effect on the mechanical properties of the composites. Stiff composites were obtained at 6 wt% fiber fractions with Young’s modulus of 254.00 ±12.70 MPa. Moreover, the yield strength was 35.70 ±1.79 MPa at 6 wt% fiber fractions. However, the ultimate tensile strength (UTS) and toughness of the composites were obtained at 5 wt% fiber fractions. Statistical analyses were used to ascertain the significant different on the mechanical properties of the fibers and composites. The implication of the results is then discussed for potential applications of PDMS-based composites reinforced with chemically modified banana fibers.
- ItemEffect of Pullout on Mechanical Behavior of Natural Fiber-reinforced Earth-based Composites(Proceedings of 13th Nigerian Materials Congress (NIMACON 2014), 2014) Kabiru Mustapha; Annan E.; Azeko, S. T.; Zebaze Kana, M. G.; Soboyejo W. O.
- ItemEffect of Thickness and Composition Ratio of Poly (3-Hexylthiophene) and [6,6]-Phenyl C60-Butyric Acid Methyl Ester Thin Film on Optical Absorption for Organic Solar Cell Fabrication(Journal of Photonic Materials and Technology. 5 (1), 5-10, 2019) Balogun, S. W and Sanusi. Y. K.
- ItemEffects of Applied Loads and Aluminium Nanoparticle Additions on Wear Resistance Properties of Particle Reinforced Epoxy Nanocomposites.(Journal of Materials and Engineering, 1(4), 137-146, 2023) Bello, S.A., Kolawole, M.Y., Balogun, S.W., Agunsoye, J.O., Hassan, S.B.
- ItemEffects of fibre reinforcements on properties of extruded alkali activated earthen building materials(2019-12-10) Emeso B. Ojo; Kabirat O. Bello; Kabiru Mustapha; Ronaldo S. Teixeira; Sérgio F. Santos; Holmer SavastanoThe reaction between clay minerals present in soil and an alkaline solution has the potential to develop in situ binders, which can be harnessed in the development of earth based construction materials. To ascertain the efficacy of this stabilisation mechanism in conjunction with fibres which are commonly used in earthen construction, this study presents a comparative analysis of the reinforcing effect of different fibre types (sisal, Eucalyptus pulp microfibers and polypropylene) in an alkali activated stabilised soil produced using extrusion technique. An evaluation of flexural properties in oven-dry and saturated conditions was conducted to simulate mechanical response in ideal and extreme conditions to evaluate effect of fibre type and content (0–2 vol%). Physical properties were also studied and optimum fibre contents evaluated. Results show that with respect to lignocellulosic fibres, sisal fibre reinforcements yielded the most remarkable result with the highest statistically significant improvement in flexural strength (79% relative to the unreinforced matrix) compared to composites reinforced with Eucalyptus pulp micro-fibres. Improved packing density and attendant reduction in water absorption associated with sisal fibre reinforced composites was attributed to synergistic interactions between sisal fibres and alkali activated matrix. On the other hand, synthetic fibre reinforcement (polypropylene), which had no statistically significant effect on composite flexural strength, transformed brittle unreinforced matrices to deflection hardening composites due to weak fibre-matrix interactions. Sisal fibres have thereby demonstrated a significant reinforcing potential in extruded alkali activated earth-based materials and presents a satisfactory balance of strength, density and ductility for the development of eco-friendly building materials for low cost housing solutions.
- ItemEFFECTS OF SAWDUST PARTICLES REINFORCEMENT ON THE MICROSTRUCTURAL, PHYSICAL, AND MECHANICAL PROPERTIES OF CEMENT-BASED COMPOSITES: AN EXPERIMENTAL STUDY(Annals of the Faculty of Engineering Hunedoara, 2024) Kabiru Mustapha; Sikiru Ottan Abdulraman; Moyosoreoluwa O. King-OkuneyeThis study investigates the effect of varying sawdust reinforcement volumes on the physical and mechanical properties of Portland cement composites. Sawdust from a local sawmill in Moro, Kwara, Nigeria, was incorporated into cement composites at volume fractions from 40% to 90%. Composites samples were produced for physical, mechanical and microstructural characterizations. Results showed that water absorption increased with higher sawdust content, peaking at 41.78% for 90% sawdust composite, and bulk density also rose, reaching a maximum of 193.33 g/m³ at 90%. Apparent void volume generally decreased with increasing sawdust content. Optimal mechanical properties were observed at 60% sawdust content, with the highest compressive strength of 20.32 MPa, flexural strength of 8.36 MPa, and fracture toughness of 0.85 MPa.m, while hardness decreased with increasing sawdust, peaking at 42.99 HRBS at 40% sawdust. Microstructural analysis using scanning electron microscopy (SEM) revealed a uniform distribution of sawdust particles within the cement matrix, with improved interfacial bonding observed at the optimal 60% sawdust content, contributing to the enhanced mechanical properties of the composite. In conclusion, 60 vol.% sawdust reinforcement is optimal for enhancing the mechanical performance of Portland cement composites, offering a balance between strength and sustainability, suggesting its potential as a cost-effective, eco-friendly reinforcement for cement-based materials in sustainable construction practices.
- ItemEffects of Thermal Annealing on Optical Properties of Poly (3-Hexyithiophene): [6,6]-Phenyl C6o-Butyric Acid Methyl Ester Blend Thin Film.(Journal of Photonic Materials and Technology. 3 (2): 14-19., 2017) Balogun, S. W., Ezike, S.E., Sanusi, Y. K. and Adebayo, O. A.
- ItemEggshell nanoparticle reinforced recycled low-density polyethylene: A new material for automobile application(Elsevier, 2021-05-07) Sefiu Adekunle Bello; Nasirudeen Kolawole Raji; Maruf Yinka Kolawole; Mohammed Kayode Adebayo; Jeleel Adekunle Adebisi; Kehinde Adekunle Okunola; Mustekeem Olanrewaju AbdulSalaam
- ItemEmerging hybrid particle‑reinforced high‑density polyethylene nanocomposite for bone replacement(Springer, 2023-04-14) Sefiu Adekunle Bello; Oluwatosin Eunice Egbanubi; Abdul Ganiyu Funsho AlabiThe study harnesses snail shell and pumpkin pods (wastes) for green productions of materials for biomedical applications. Snail shell and pumpkin pod nanoparticles were produced and incorporated into the high-density polyethylene (HDPE). Nanoparticles and nanocomposites produced were examined. Results indicate that both nanoparticles are relevant medically and fit in as reinforcements for developing materials for biomedical applications. Improvement in the tensile properties, flexural properties, and impact energy values up to a certain percentage by weight of nanoparticles additions was noted with degradation in the fracture toughness and strain energy release rate at all percentages by weight of nanoparticle additions. Since maximum flexural strength was recorded at 4% by weight, properties of HDPE containing 4% by weight of the snail shell nanoparticles and that containing 2% each of the snail shell and pumpkin pod nanoparticles were compared with properties of the reported human cortical and trabecular bones in the literature. It is noted that mechanical properties of both nanocomposites are superior to those of the trabecular bones in the thoracic lumber region but are inferior to those of the cortical femoral bones. Therefore, both nanocomposites are mechanically suitable for biomedical applications as materials for replacing the trabecular bones in the thoracic lumber region. However, they are recommended for compatibility screening to ascertain their biological suitability.
- ItemEvaluation of Photovoltaic Properties of Green Synthesized Zinc Oxide Nanoparticles from Extract of Carica papaya for Anode Buffer Film Layer of Polymer Solar Cells.(https://ssrn.com/abstract=4010361.SSRN Electronic Journal., 2022) Balogun, S. W.; Oyeshola, H. O; Adejumo, B. K; Sanusi, Y. K; and Fajinmi, G. R
- ItemEvaluation of Titanium (IV) Oxide Nano Powder-Hunteria umbellata Seed Extract Composite Coating on Mild Steel Immersed in Acidic Media for Corrosion Inhibition.(Journal of Materials and Engineering, 03(4), 365-375, 2025) Balogun, S.W., Adekunle Bello, S.A., Emmanuel, E.A., Alabi, AG.F.
- ItemFlow Statistics and the Scaling of Ceramic Water Filters(Advanced Materials Research, 2015) E. Annan; K. Mustapha; S.T. Azeko; O.S. Odusanya; Karen Malatesta; W.O. SoboyejoAccording to World Health Organization, there was increase in the number of people that have access to safe drinking water between 2006 and 2010. Such trends can be countered partly by the use of ceramic water filters that can remove microbial pathogens from water. However, the initial flow rates in such filters are often limited to ranges between 1 and 3 L/hr. The flow rates may vary statistically and decrease with increasing filter use. In this paper, the flow through ceramic water filters is characterized using Darcy’s equation. An effective permeability is obtained for filters with a range of micro-and nanoscale pore sizes. The statistical variations in the flow rates and effective permeabilities are elucidated along with the potency of multiple filter system for scale-up studies in serving a community.
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