Onion-like carbon unlocks high PdNiO nanocatalyst dispersion for outstanding thermal methane oxidation Ahmed Gamal, Adewale K. Ipadeola, Mostafa H. Sliem, Siham Y. A. Al-Qaradawi, Aboubakr M. Abdullah, et al. Nanoscale Advances, 2026 Synthesized PdNiO nanocatalysts embedded with onion-like carbon (PdNiO/OLC) enable full methane oxidation at 400 °C, outperforming Pd/OLC and Pd/C due to its enhanced graphitization, high surface area, and optimized metal dispersion.
Interfacial robustness of commercial amine-based inhibitors mitigates under-deposit corrosion of carbon steel in simulated sour conditions: a merged electrochemical and machine learning study Eman M. Fayyad, Adewale K. Ipadeola, Mostafa H. Sliem, Dana Abdeen, Noora Al-Qahtani, et al. Emergent Materials, 2025 In oil and gas industry, under-deposit corrosion (UDC) of metallic pipelines is a major problem, especially in sour environments. Not much research has been done on the effectiveness of commercial inhibitors with potent interfacial qualities in reducing UDC. In order to prevent sand (SiO2)-induced UDC on CS in simulated sour conditions, two different commercial inhibitors, CRONOX-CRW85719 (CR1) and CRONOX-CRW85282 (CR2), were thoroughly tested over a concentration range (5–400 ppm). Performance was evaluated using electrochemical studies, physicochemical characterizations, and machine learning (ML) modeling. The results showed that, at optimal concentrations of 50 ppm and 200 ppm for CR1 and CR2, respectively, there were nearly total inhibition efficiencies (IE), outperforming the corrosion resistance of un-inhibited CS. Nevertheless, after 24 h, the IEs of CR1 and CR2 were reduced by 14.7% and 4.0%, respectively, due to the presence of fully covered SiO2 deposits on the CS surface, suggesting that deposit coverage reduces inhibitor efficacy. Because of the reduced molecular bulk and improved ability of CR2 to penetrate SiO2deposits, it performs better and provides better access to the metal surface relative to CR1. The random forest technique was shown to be the most appropriate predictive ML model, with an optimized mean coefficient of determination (R 2 = 0.85 ± 0.05), a root mean square error (RMSE = 3.6%), and a mean absolute error (MAE = 2.7%), amongst the various ML models. This study emphasizes how important inhibitor molecular properties are in preventing SiO2-induced UDC of CS in sour conditions, especially penetrating ability and strong interfacial contacts.
Interstitial cobalt nitrides (CoxN): holistic frontiers in energy storage and catalysis Adewale K. Ipadeola, Selvam Mathi, Mostafa H. Sliem, M.-Sadeeq Balogun, Aboubakr M. Abdullah Journal of Materials Chemistry A, 2025 This review explores the roles of CoxN in LIBs, SCs, RZABs, and electrocatalysis, focusing on fabrication strategies and structure–property–performance relationships to guide the design of efficient and durable electrochemical energy systems.
Pre‑Corrosion Conditionings and Machine-Learning Prediction of Corrosion Resistance in Mixed Under-Deposit Welded Carbon Steel Exposed to Sour Environments AA Abdullah, AK Ipadeola, MH Sliem, D Abdeen, NJ Laycock, V Ravi, ... 249th ECS Meeting (May 24-28, 2026) , 2026 2026
Self-Adaptive Reaction Microenvironment via Charge Redistribution in Metastable Co3O4-CoN for Efficient Hydrogen Electrocatalysis S Mathi, W Gan, AK Ipadeola, H Yang, AM Abdullah, Z Wang, ... Advanced Powder Materials 1 (xxx), doi.org/10.1016/j.apmate.2026.100416 , 2026 2026 Citations: 1
Onion-like carbon unlocks high PdNiO nanocatalyst dispersion for outstanding thermal methane oxidation A Gamal, AK Ipadeola, MH Sliem, SYA Al-Qaradawi, AM Abdullah, ... Nanoscale Advances 120 (xxx), doi.org/10.1039/D5NA01028D , 2026 2026
Electrochemical and Machine Learning Analysis Unveils Protective Mechanisms of Commercial Amine-Based Inhibitors for Under-Deposit Corrosion of Carbon Steel in Sour Media AM Abdullah, EM Fayyad, AK Ipadeola, MH Sliem, D Abdeen, ... Electrochemical Society Meeting Abstracts 248, 1105-1105 , 2025 2025 Citations: 2
Mechanistic and Inhibition Insights into Preferential Weldment Corrosion and Pitting in Sour Environments for X65 Carbon Steel Pipelines AM Abdullah, AK Ipadeola, MH Sliem, D Abdeen, N Laycock, A RajKumar, ... International Conference on Mechanical Sciences and Engineering, London … , 2025 2025
Addressing Localized Corrosion in Sour Gas Pipelines: Electrochemical and Machine Learning-Driven Assessment of Under-deposited Welded Carbon Steel AM Abdullah, AK Ipadeola, MH Sliem, D Abdeen, N Laycock, A RajKumar, ... Oman Corrosion & Materials Innovation Summit 2025 – Al in Corrosion 1, xxxx , 2025 2025
Cover page: Unmasking the Hidden Threat: Conductive Under-Deposits and Their Role in Preferential Weldment Corrosion of Carbon Steel under Sour Conditions AK Ipadeola, MH Sliem, D Abdeen, N Laycock, A RajKumar, ... Langmuir 41 (35), 23632–23651 , 2025 2025
Unmasking the Hidden Threat: Conductive Under-Deposits and Their Role in Preferential Weldment Corrosion of Carbon Steel under Sour Conditions AK Ipadeola, MH Sliem, D Abdeen, N Laycock, A RajKumar, ... Langmuir 12, https://doi.org/10.1021/acs.langmuir.5c0 , 2025 2025 Citations: 3
Interfacial robustness of commercial amine-based inhibitors mitigates under-deposit corrosion of carbon steel in simulated sour conditions: A merged electrochemical and machine … EM Fayyad, AK Ipadeola, MH Sliem, D Abdeen, N Al-Qahtani, ... Emergent Materials 20, 10.1007/s42247-025-01196-4 , 2025 2025 Citations: 5
Integrated electrochemical and machine learning framework for SiO2/CaCO3 under-deposits driven welded X65 carbon steel corrosion mitigation in sour service conditions AK Ipadeola, MH Sliem, D Abdeen, N Laycock, A RajKumar, ... Petroleum Research 12, https://doi.org/10.1016/j.ptlrs.2025.09 , 2025 2025 Citations: 1
Interstitial Cobalt Nitrides (CoxN): Holistic Frontiers in Energy Storage and Catalysis AK Ipadeola, M Selvam, MH Sliem, MS Balogun, AM Abdullah Journal of Materials Chemistry A 5, 10.1039/D5TA02335A , 2025 2025 Citations: 36
Overview of Safety assessment and Life-cycle analysis of electrochemical devices AK Ipadeola, Z Khanam, OL Osifeki, MS Balogun, AM Abdullah Advanced Electrochemical Materials and Devices for Clean Energy and … , 2025 2025
Rational Design of Mixed-Valence Cobalt-Based Nanowires via Simultaneous Vanadium and Iron Modulations for Enhanced Alkaline Electrochemical Water Splitting WJ Gan, S Mathi, J Li, AK Ipadeola, J Deng, A Abdullah, MS Balogun, ... Nanoscale 56, 10.1039/D5NR00801H , 2025 2025 Citations: 6
Rational construction of N-containing carbon sheets atomically doped NiP-CoP nanohybrid electrocatalysts for enhanced green hydrogen and oxygen production AK Ipadeola, MH Sliem, P Mwonga, KI Ozoemena, AM Abdullah Electrochimica Acta 320, 10.1016/j.electacta.2024.145236 , 2024 2024 Citations: 4
Hausmannite–Carbon Nanofiber Composite Electrocatalyst for High Areal-Discharge Energy Rechargeable Zinc–Air Battery AK Lebechi, L Gaolatlhe, TP Mofokeng, AB Haruna, AK Ipadeola, ... ACS omega 9 (37), 39119-39133 , 2024 2024 Citations: 3
The advancement of porous bimetal nanostructures for electrochemical CO2 utilization to valuable products: Experimental and theoretical insights AK Ipadeola, MS Balogun, AM Abdullah Carbon Capture Science & Technology 13 (doi.org/10.1016/j.ccst.2024.1002 … , 2024 2024 Citations: 10
Recent advances in porous multimetallic alloy-based anodes for rechargeable alkali metal-ion batteries AK Ipadeola, AM Abdullah, K Eid Energy Materials 4, 400079 , 2024 2024 Citations: 22
Interfacial Electronic Interactions within the Pd-CeO2/Carbon Onions Define the Efficient Electrocatalytic Ethanol Oxidation Reaction in Alkaline Electrolytes JJ Ogada, TJ Ehirim, AK Ipadeola, AB Haruna, PV Mwonga, AM Abdullah, ... ACS Omega 21, xxxx -xxxx , 2024 2024 Citations: 21
Metal-organic Framework-derived Hierarchical Porous N/Co-doped Carbon Supported Sponge-like Pd-SnO2 Nanostructures for Low-temperature CO Oxidation AK Ipadeola, A Gamal, B Salah, Y Ibrahim, AM Abdullah, AB Haruna, ... Materials Advances , 2024 2024 Citations: 15
Fabrication of Self-Standing Porous Foam-like PdM (M = Ni, Fe, Co) Nanocrystals for Boosted Ethanol Oxidation Electrocatalysis AM Abdullah, AK Ipadeola, B Salah, K Eid 244th ECS Meeting 244, xxxx -xxxx , 2023 2023
MOST CITED SCHOLAR PUBLICATIONS
Defect-Engineered Nanostructured Ni/MOF-Derived Carbons for an Efficient Aqueous Battery-Type Energy Storage Device TP Mofokeng, AK Ipadeola, ZN Tetana, KI Ozoemena ACS omega 5 (32), 20461–20472 , 2020 2020 Citations: 91
Adsorption of chromium ions from tannery effluents onto activated carbon prepared from rice husk and potato peel by H 3 PO 4 activation E Vunain, JB Njewa, TT Biswick, AK Ipadeola Applied Water Science 11 (9), 150 , 2021 2021 Citations: 85
CeO2 Modulates the Electronic States of a Palladium Onion-Like Carbon Interface into a Highly Active and Durable Electrocatalyst for Hydrogen Oxidation in Anion-Exchange … JJ Ogada, AK Ipadeola, PV Mwonga, AB Haruna, F Nichols, S Chen, ... ACS Catalysis 12 (12), 7014–7029 , 2022 2022 Citations: 77
Porous High-Entropy Alloys as Efficient Electrocatalysts for Water-Splitting Reactions AK Ipadeola, AK Lebechi, L Gaolatlhe, AB Haruna, M Chitt, K Eid, ... Electrochemistry Communications 136 (x), 107207 , 2022 2022 Citations: 74
Synergistically Interactive MnFeM (M=Cu, Ti, and Co) sites doped porous g-C3N4 fiber-like nanostructures for an enhanced green hydrogen production B Salah, A Abdelgwad, Q Lu, AK Ipadeola, R Luque, K Eid Green Chemistry 25 (15), 6032-6040 , 2023 2023 Citations: 73
Bimetallic Pd/SnO 2 Nanoparticles on Metal Organic Framework (MOF)-Derived Carbon as Electrocatalysts for Ethanol Oxidation AK Ipadeola, R Barik, SC Ray, KI Ozoemena Electrocatalysis 10 (4), 366-380 , 2019 2019 Citations: 73
Porous Spinel-type Transition metal oxides Nanostructures as Emergent Electrocatalysts for Oxygen Reduction Reaction L Augustus K., I Adewale Kabir, E Kamel, A Aboubakr M., ... Nanoscale 14 (30), 10717-10737 , 2022 2022 Citations: 67
Efforts at Enhancing Bifunctional Electrocatalysis and Related Events for Rechargeable Zinc-Air Batteries AK Ipadeola, AB Haruna, L Gaolatlhe, AK Lebechi, J Meng, Q Pang, K Eid, ... ChemElectroChem 8 (21), 3998-4018 , 2021 2021 Citations: 67
Cover profile: Efforts at Enhancing Bifunctional Electrocatalysis and Related Events for Rechargeable Zinc‐Air Batteries AK Ipadeola, AB Haruna, L Gaolatlhe, AK Lebechi, J Meng, Q Pang, K Eid, ... ChemElectroChem 8 (21), 3996-3996 , 2021 2021 Citations: 67
Fuel cell-based breath-alcohol sensors: Innovation-hungry old electrochemistry KI Ozoemena, S Musa, R Modise, AK Ipadeola, L Gaolatlhe, S Peteni, ... Current Opinion in Electrochemistry 10, 82-87 , 2018 2018 Citations: 63
Alkaline water-splitting reactions over Pd/Co-MOF-derived carbon obtained via microwave-assisted synthesis AK Ipadeola, KI Ozoemena RSC advances 10 (29), 17359-17368 , 2020 2020 Citations: 58
Porous Transition Metal-Based Nanostructures as Efficient Cathodes for Aluminium-air Batteries AK Ipadeola, K Eid, AM Abdullah Current Opinions in Electrochemistry 37, 101198 , 2023 2023 Citations: 56
Unmasking the Latent Passivating Roles of Ni(OH)2 on the Performance of Pd-Ni Electrocatalysts for Alkaline Ethanol Fuel Cells AK Ipadeola, N Mathebula, M Pagliaro, HA Miller, F Vizza, V Davies, Q Jia, ... ACS Applied Energy Materials 3 (9), 8786 - 8802 , 2020 2020 Citations: 55
Graphene-based catalysts for carbon monoxide oxidation: Experimental and theoretical insights AK Ipadeola, M Chitt, A Abdelgawad, K Eid, AM Abdullah International Journal of Hydrogen Energy 48 (46), 17434-17467 , 2023 2023 Citations: 46
Porous multi-metallic Pt-based nanostructures as efficient electrocatalysts for ethanol oxidation: A mini-review AK Ipadeola, K Eid, AK Lebechi, AM Abdullah, KI Ozoemena Electrochemistry Communications 140, 107330 , 2022 2022 Citations: 40
Bifunctional Behavior of Pd/Ni Nanocatalysts on MOF‐Derived Carbons for Alkaline Water‐Splitting A Ipadeola, P Mwonga, S Ray, R Maphanga, K Ozoemena Electroanalysis 32 (12), 3060-3074 , 2020 2020 Citations: 38
Hydrogen oxidation and oxygen reduction reactions on palladium nano-electrocatalyst supported on nickel-deficient MOF-derived carbons AK Ipadeola, PV Mwonga, KI Ozoemena Electrochimica Acta 390, 138860 , 2021 2021 Citations: 37
Interstitial Cobalt Nitrides (CoxN): Holistic Frontiers in Energy Storage and Catalysis AK Ipadeola, M Selvam, MH Sliem, MS Balogun, AM Abdullah Journal of Materials Chemistry A 5, 10.1039/D5TA02335A , 2025 2025 Citations: 36
Self-standing foam-like Pd-based alloys nanostructures for efficient electrocatalytic ethanol oxidation AK Ipadeola, A Abdelgawad, B Salah, A Ghanem, M Chitt, AM Abdullah, ... International Journal of Hydrogen Energy 48 (78), 30354-30364 , 2023 2023 Citations: 33
Pd-Nanoparticles Embedded Metal–Organic Framework-Derived Hierarchical Porous Carbon Nanosheets as Efficient Electrocatalysts for Carbon Monoxide Oxidation in Different … AK Ipadeola, K Eid, AM Abdullah, KI Ozoemena Langmuir 38 (36), 11109–11120 , 2022 2022 Citations: 33
