Enhancing the performance of MoO3-based cathodes for aqueous zinc-ion batteries: spinel CuMoO3 vs non-spinel CuO–MoO3 Oluwaseyi D. Saliu, Opeyemi Iresemowo, Francis Kubi, Kehinde H. Moberuagba, Adewale G. Adeniyi, et al. Journal of Materials Science Materials in Engineering, 2025 Developing efficient and sustainable energy storage devices is crucial for advancing mobile electronics and electric vehicles. While lithium-ion batteries currently dominate the market, their limitations have prompted the exploration of alternative technologies. This study investigates the potential of CuMoO4 spinel nanomaterials as cathodes for aqueous zinc-ion batteries. By combining the unique properties of copper and molybdenum oxide into spinel form, we aim to enhance charge transfer kinetics and stability, thereby overcoming the limitations of traditional CuO–MoO3 composite electrodes. The CuMoO4 electrode delivered a specific capacity of 873 mAhg−1 at 1 A/g and maintained 612 mAhg−1 even at a high current density of 10 Ag−1 Additionally, the spinel electrode retained 94% of its initial capacity after 2000 cycles at 1 Ag−1, demonstrating remarkable stability.
Post-synthesis Physical and Hydrothermal Mixing of MnO2, SnO2, and rGO Influence on Ultracapacitor Electrode Performance Solomon E. Anito, Oluwaseyi D. Saliu, Messai Mamo, James Ramontja, Edwin T. Mombeshora, et al. Chemistryselect, 2025 The application of nanoscale materials in electrochemical capacitors (ECs) is promising; however, further advanced development and understanding are required to enable their practical use. The aim here was to investigate how simple physical mixing and the hydrothermal method influence EC electrode performance when MnO 2 nanorods and SnO 2 nanoparticles were combined as binary and ternary nanocomposites with ascorbic acid‐reduced graphene oxide (rGO). The key advantage of this approach is the combination of metal oxides after synthesis, unlike the common in situ synthesis during compositing. The MnO 2 nanorods exhibited higher specific capacitance (C s , 288.9 F g −1 ) compared to SnO 2 nanoparticles (126.1 F g −1 ). The physical‐mixed composite, namely, MnO 2 + SnO 2, produced electrodes with ≈ 400% and ≈ 900% C s enhancement relative to MnO 2 and SnO 2 , respectively. Meanwhile, electrodes from the MnO 2 + SnO 2 ‐rGO improved the C s of MnO 2 nanorods and SnO 2 nanoparticles by ≈ 544% and ≈ 1247%, respectively. Additionally, physical mixing achieved power densities of 22321 W kg −1 (MnO 2 + SnO 2 ) and 22500 W kg −1 (MnO 2 ‐SnO 2 ). The electrodes from hydrothermally prepared MnO 2 –SnO 2 and MnO 2 –SnO 2 –rGO attained the highest C s retention between 93% and 80%, respectively, after 5000 cycles. The study highlights the tremendous potential of the cost‐effective, simple, quick, and energy‐saving physical mixing method in materials engineering for ECs.
High-entropy oxides and alloys as emerging multifunctional nano-sized materials for photocatalytic degradation of organic pollutants Stephen Sunday Emmanuel, Ademidun Adeola Adesibikan, Emmanuel Oladeji Oyetola, Ebenezer Temiloluwa Abimbola, Kabir O. Otun, et al. Journal of the Chinese Chemical Society, 2025 High‐entropy materials (HEMs) including oxide versions like (CeGdHfPrZr)O2 are emerging multifunctional materials with alluring properties and versatile applications across various fields, including environmental science. This review aims to pragmatically present a critical analysis of the latest findings on the photocatalytic application of HEMs for the degradation of different harmful organic pollutants in aqueous media. Notably, with over 70% photocatalytic degradation efficiency in the majority of published research, it can be inferred that HEMs are revolutionary in pollutant remediation. Furthermore, it was shown that spent HEMs may be readily recycled and retain over 70% efficiency while maintaining the original structural integrity for up to 2–20 cycles. Our analysis suggests that the synergy between the multi‐metallic components that make up the HEMs, higher oxygen vacancies (OV), and lower e−/h+ recombination may be the reason for the exceptional efficiency and cyclic stability. Additionally, the study of the effect of co‐existing ions demonstrated the great potential of HEMs for practical applications. Also, the electron trapping/radical‐scavenging studies revealed that •O2− (which can facilitate demethylation/de‐ethylation) is the biggest player in the photocatalytic degradation of various organic pollutants using HEMs, followed by •OH radicals and then h+.
From tobacco to biochar: a review of production processes, properties, and applications James Ramontja, Kingsley O. Iwuozor, Ebuka Chizitere Emenike, Chika J. Okorie, Harvis Bamidele Saka, et al. Biofuels Bioproducts and Biorefining, 2025 Tobacco waste presents notable environmental challenges, such as soil and water contamination from nicotine and other harmful chemicals, compounded by inefficiencies in conventional waste management. Converting tobacco waste into biochar offers a promising solution to address these issues. This study reviews the production, properties, and applications of biochar derived from tobacco, using feedstocks such as stems, seeds, leaves, and tobacco fines. It has been observed that tobacco stems are the most commonly used precursor and pyrolysis is the most frequently employed thermochemical conversion process, with biochar yields ranging from 5% to 85%, depending on operational variables. Tobacco‐derived biochar exhibits surface areas typically between 2 and 50 m2/g, fixed carbon content of 4 to 63 wt%, and ash content ranging from 12% to 51%. Tobacco‐derived biochar has been applied in agriculture, water treatment, composting, and energy production, demonstrating its efficiency. It also plays an important role in soil pollution remediation. Despite existing research on tobacco‐based biochar, gaps remain in areas such as the gasification and torrefaction of tobacco biomass and the use of other tobacco‐related wastes like leftover cigarettes and fines. The findings of this study depict the dual benefits of utilizing tobacco waste for biochar production – addressing waste disposal challenges while creating a valuable material with multiple environmental and economic advantages.
Orange II removal from aqueous solution by a cellulose acetate biopolymer incorporated with zinc oxide nanoparticles Indian Journal of Chemical Technology, 2019
Pressure-and Temperature-Dependent Ionic Transport in Ag₄Zr₃S₈ Nanocrystal Pellets Y Xu, I Campbell, C Owen, S Choudhary, O Saliu, P Banerjee ChemRxiv 2026 (0105) , 2026 2026
Lattice Alkali in Cu₃N Reprograms Interfacial Electronics for Selective Aqueous Nitrate-to-Ammonia O Saliu, O Cooper, P Banerjee ChemRxiv 2026 (0104) , 2026 2026
Post‐synthesis Physical and Hydrothermal Mixing of MnO 2 , SnO 2 , and rGO Influence on Ultracapacitor Electrode Performance SE Anito, OD Saliu, M Mamo, J Ramontja, ET Mombeshora, PG Ndungu ChemistrySelect 10 (43), e04097 , 2025 2025
Sodiation of Colloidal Cu 3 N for Solid-State Electrolyte Applications in Sodium-Ion Batteries N Powar, Y Xu, K Zervos, I Campbell, O Saliu, S Choudhary, P Banerjee 248th ECS Meeting (October 12-16, 2025) , 2025 2025
Tungsten-based nano-architecture for the photocatalytic degradation of recalcitrant pharmaceutical pollutants: A review AA Adesibikan, OO Saliu, PG Ndungu Journal of Water Process Engineering 77, 108349 , 2025 2025 Citations: 2
Charge transport in functional ligand capped nanocrystals and nanoclusters for energy applications O Saliu, N Powar, Y Xu, K Zervos, I Campbell, P Banerjee Nano Energy, 111351 , 2025 2025 Citations: 4
High‐entropy oxides and alloys as emerging multifunctional nano‐sized materials for photocatalytic degradation of organic pollutants SS Emmanuel, AA Adesibikan, EO Oyetola, ET Abimbola, KO Otun, ... Journal of the Chinese Chemical Society 72 (6), 573-594 , 2025 2025 Citations: 8
Enhancing the performance of MoO 3 -based cathodes for aqueous zinc-ion batteries: spinel CuMoO 3 vs non-spinel CuO–MoO 3 OD Saliu, O Iresemowo, F Kubi, KH Moberuagba, AG Adeniyi, J Ramontja Journal of Materials Science: Materials in Engineering 20 (1), 72 , 2025 2025 Citations: 2
From tobacco to biochar: a review of production processes, properties, and applications J Ramontja, KO Iwuozor, EC Emenike, CJ Okorie, HB Saka, AO Ezzat, ... Biofuels, Bioproducts and Biorefining 19 (3), 911-928 , 2025 2025 Citations: 13
Teak leaf biochar production for sustainable forest waste management at low temperatures AG Adeniyi, KO Iwuozor, MA Ajala, EC Emenike, MA Amoloye, ... Biofuels 16 (1), 56-64 , 2025 2025 Citations: 12
Interfacial S-scheme charge transfer in MgIn 2 S 4/ZnO heterojunction for enhanced photodegradation of tetracycline and efficient water splitting TL Yusuf, OC Olatunde, D Masekela, OD Saliu, KD Modibane, ... Nanoscale Advances 7 (16), 4876-4885 , 2025 2025 Citations: 8
Transformation of Sugar Cane Lignin into Renewable Fuel-Range Cyclo-Alkanes: In-Situ Hydrogen Release Using Earth-Abundant AlCl 3 and Biobased Mannose … OD Saliu, TZ Adesanya, A Acquah, B Akobe, DD Aganyi, OD Abubakar, ... Industrial & Engineering Chemistry Research 64 (1), 179-189 , 2024 2024
Design of Highly Active Silicene Hybrid Sheets for Electrode Applications in Battery-Type Supercapacitors DT Molele, OD Saliu, O Abubakar, EC Emenike, KO Iwuozor, ED Ojo, ... Chemistry Africa 7 (10), 5669-5685 , 2024 2024 Citations: 4
Electrocapacitive removal of Na and Cd ions from contaminated aqueous solution using Fe 3 O 4 -poly (3,4-ethylenedioxythiophene) poly(styrene sulfonate … OD Saliu, O Leping, TL Yusuf, AG Adeniyi, J Ramontja Scientific Reports 14 (1), 28155 , 2024 2024 Citations: 4
Biochar from Delonix regia pod: consideration of an updraft retort carbonisation process JO Ighalo, AG Adeniyi, S Ogunniyi, CA Adeyanju, OD Saliu, CA Igwegbe, ... Biofuels 15 (5), 505-513 , 2024 2024 Citations: 12
The design and characterization of modified polythiophene supported plant mediated co-ni bimetallic nanocomposites GV Awolola, RO Ayoola, OD Saliu, OO Oluwaniyi, OO Dosumu, ... Journal of Chemical Society of Nigeria 49 (2) , 2024 2024 Citations: 1
Evaluation of the properties of solid biofuel produced from coconut fibre AG Adeniyi, EC Emenike, SA Agbana, KO Iwuozor, OD Saliu Indian chemical engineer 66 (2), 184-195 , 2024 2024 Citations: 12
Technologies for the Extraction and Post-extraction of Stevia rebaudiana Leaves KO Iwuozor, SS Emmanuel, MO Ahmed, AM Idris, EC Emenike, OD Saliu, ... Chemistry Africa 7 (2), 539-563 , 2024 2024 Citations: 23
Electrocatalyst performances in direct alcohol fuel cells: defect engineering protocols, electrocatalytic pathways, key parameters for improvement, and breakthroughs on the horizon T Matthews, SP Mbokazi, TH Dolla, SS Gwebu, K Mugadza, K Raseruthe, ... Small Science 4 (1), 2300057 , 2024 2024 Citations: 30
Thermo-mineralization of biomass for metal oxide recovery: A review KO Iwuozor, EC Emenike, JO Ighalo, TT Micheal, KT Micheal, OT Ore, ... Bioresource Technology Reports 24, 101664 , 2023 2023 Citations: 20
MOST CITED SCHOLAR PUBLICATIONS
A review on treatment technologies for printing and dyeing wastewater (PDW) U Ewuzie, OD Saliu, K Dulta, S Ogunniyi, AO Bajeh, KO Iwuozor, ... Journal of Water Process Engineering 50, 103273 , 2022 2022 Citations: 326
From oceans to dinner plates: The impact of microplastics on human health EC Emenike, CJ Okorie, T Ojeyemi, A Egbemhenghe, KO Iwuozor, ... Heliyon 9 (10) , 2023 2023 Citations: 222
Advances in the extraction, classification, modification, emerging and advanced applications of crystalline cellulose: a review EC Emenike, KO Iwuozor, OD Saliu, J Ramontja, AG Adeniyi Carbohydrate Polymer Technologies and Applications 6, 100337 , 2023 2023 Citations: 130
Greenly biosynthesized bimetallic nanoparticles for ecofriendly degradation of notorious dye pollutants: A review SS Emmanuel, AA Adesibikan, OD Saliu, EA Opatola Plant Nano Biology 3, 100024 , 2023 2023 Citations: 106
Phytogenically bioengineered metal nanoarchitecture for degradation of refractory dye water pollutants: a pragmatic minireview SS Emmanuel, AA Adesibikan, OD Saliu Applied Organometallic Chemistry 37 (2), e6946 , 2023 2023 Citations: 69
Biomass-derived activated carbon monoliths: A review of production routes, performance, and commercialization potential AG Adeniyi, KO Iwuozor, EC Emenike, PA Sagboye, KT Micheal, ... Journal of Cleaner Production 423, 138711 , 2023 2023 Citations: 68
A critical review on the removal of mercury (Hg2+) from aqueous solution using nanoadsorbents EC Emenike, AG Adeniyi, KO Iwuozor, CJ Okorie, AU Egbemhenghe, ... Environmental Nanotechnology, Monitoring & Management 20, 100816 , 2023 2023 Citations: 66
Prospects and challenges of utilizing sugarcane bagasse as a bio-coagulant precursor for water treatment KO Iwuozor, AG Adeniyi, EC Emenike, T Ojeyemi, AU Egbemhenghe, ... Biotechnology Reports 39, e00805 , 2023 2023 Citations: 49
Starch built TiO2 nanoarchitecture with mixed anatase and rutile phase for high energy density supercapacitor electrode OD Saliu, M Mamo, P Ndungu, J Ramontja Journal of Energy Storage 49, 104155 , 2022 2022 Citations: 37
Porous starch citrate biopolymer for controlled release of carbofuran in the management of root knot nematode Meloidogyne incognita OA Fabiyi, OD Saliu, AO Claudius-Cole, IO Olaniyi, OV Oguntebi, ... Biotechnology Reports 25, e00428 , 2020 2020 Citations: 37
Crystallographic, functional group and microstructural properties of oil palm biochar reinforced hybrid polystyrene composite doped with aluminium AG Adeniyi, SA Abdulkareem, JO Ighalo, OD Saliu, MK Amosa, ... Advances in Materials and Processing Technologies 8 (3), 2893-2904 , 2022 2022 Citations: 34
Electrocatalyst performances in direct alcohol fuel cells: defect engineering protocols, electrocatalytic pathways, key parameters for improvement, and breakthroughs on the horizon T Matthews, SP Mbokazi, TH Dolla, SS Gwebu, K Mugadza, K Raseruthe, ... Small Science 4 (1), 2300057 , 2024 2024 Citations: 30
Barrier property enhancement of starch citrate bioplastic film by an ammonium-thiourea complex modification OD Saliu, GA Olatunji, AI Olosho, AG Adeniyi, Y Azeh, FT Samo, ... Journal of Saudi Chemical Society 23 (2), 141-149 , 2019 2019 Citations: 27
Microwave exfoliation of a biochar obtained from updraft retort carbonization for supercapacitor fabrication OD Saliu, AG Adeniyi, M Mamo, P Ndungu, J Ramontja Electrochemistry Communications 139, 107308 , 2022 2022 Citations: 25
Technologies for the Extraction and Post-extraction of Stevia rebaudiana Leaves KO Iwuozor, SS Emmanuel, MO Ahmed, AM Idris, EC Emenike, OD Saliu, ... Chemistry Africa 7 (2), 539-563 , 2024 2024 Citations: 23
Research Progression of the Genus Merremia : A Comprehensive Review on the Nutritional Value, Ethnomedicinal Uses, Phytochemistry, Pharmacology, and Toxicity TL Olatunji, AE Adetunji, C Olisah, OA Idris, OD Saliu, F Siebert Plants 10 (10), 2070 , 2021 2021 Citations: 22
Thermo-mineralization of biomass for metal oxide recovery: A review KO Iwuozor, EC Emenike, JO Ighalo, TT Micheal, KT Micheal, OT Ore, ... Bioresource Technology Reports 24, 101664 , 2023 2023 Citations: 20
From oceans to dinner plates: the impact of microplastics on human health. Heliyon 9 (10): e20440 EC Emenike, CJ Okorie, T Ojeyemi, A Egbemhenghe, KO Iwuozor, ... 2023 Citations: 19
Solvated polystyrene resin: a perspective on sustainable alternative to epoxy resin in composite development AG Adeniyi, EC Emenike, KO Iwuozor, OD Saliu Materials Research Innovations 27 (7), 490-502 , 2023 2023 Citations: 18
Removal of bisphenol-A from aqueous solution using rice husk nanosilica: adsorption kinetics, equilibrium and thermodynamic studies BO Orimolade, FA Adekola, AA Mohammed, AO Idris, OD Saliu, T Yusuf J. Appl. Chem. Res 12, 8-21 , 2018 2018 Citations: 15