Adewale Kabir Ipadeola
@qatar university
Center for Advanced Materials
Qatar University
RESEARCH INTERESTS
Materials for electrochemistry and energy storage and conversion
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Adewale K. Ipadeola, Ahmed Gamal, Belal Salah, Yassmin Ibrahim, Aboubakr M. Abdullah, Aderemi B. Haruna, Kenneth I. Ozoemena, and Kamel Eid
Royal Society of Chemistry (RSC)
Metal–organic framework-derived porous N/Co-doped carbon (MOF-PNC) anchored sponge-like Pd–SnO2 nanoparticles (Pd–SnO2/MOF-PNC), prepared by microwave-irradiation, annealing and chemical etching, delivered excellent low-temperature carbon monoxide oxidation.
Adewale K. Ipadeola, Kamel Eid, Aderemi B. Haruna, Aboubakr M. Abdullah, and Kenneth I. Ozoemena
Wiley
AbstractPd‐based nanostructures are endowed with impressive catalytic features for alcohol‐based fuel cells, however, their poisoning by carbon monoxide (CO) is a great barrier to large‐scale utilization of such fuel cells as alternative power sources. The need to optimize the electrochemical CO oxidation (COOxid) of Pd‐based nanostructures in various electrolytes has attracted much attention in the last decade, so it is important to provide a timely update on this area of research. This mini‐review highlights the most recent advances in controlling some synthesis methods of Pd‐based nanostructures and their morphologies for enhanced electrocatalytic COOxid in different electrolyte conditions in the last three years. Finally, the main challenges for commercially viable Pd‐based nanostructures for electrochemical COOxid are discussed, highlighting the future perspectives and providing promising solutions for practical COOxid application.
Adewale K. Ipadeola, Ahmed Abdelgawad, Belal Salah, Aboubakr M. Abdullah, and Kamel Eid
American Chemical Society (ACS)
The interfacial engineering of Pd-based alloys (i.e., PdM with distinct morphologies, compositions, and strain defects) is an efficient way for enhanced catalytic activity; however, it remains a grand challenge to fabricate such alloys in aqueous solutions without heating, organic solvents, and multiple reaction steps. Herein, we present a simple, aqueous-phase, one-step, and ultrafast approach for the interfacial engineering of surfactant-free porous PdM (M = Cu, Au, and Mn) nanocrystals with well-controlled spongy-like morphology and compositions. The electronic interaction in PdM nanocrystals and their effect on the alkaline electrochemical ethanol oxidation reaction (EOR) are investigated using XRD, XPS, and electrochemical tests. Notably, integrating M metals into Pd atoms results in upshifting the d-band center of Pd and subsequently modulating the EOR activity and stability substantially. The EOR mass activity (10.78 A/mgPd (6.93 A/mgPdCu)) of PdCu was 1.83, 3.09, 4.51, and 53.90 times higher than those of AuPd (5.90 A/mgPd (3.27 A/mgAuPd)), PdMn (3.48 A/mgPd (3.19 A/mgPdMn)), Pd (2.39 A/mgPd), and Pd/C (0.20 A/mgPd), respectively, besides substantial durability after 1000 cycles. This is due to the porous two-dimensional morphology, a low synergetic effect, higher interfacial interaction, and greater active surface area of PdCu, besides a high Cu content with more oxophilicity that facilitates activation/dissociation of H2O to generate -OH species needed for quick EOR electrocatalysis. The electrochemical impedance spectroscopy (EIS) reveals better electrolyte/electrode interfacial interaction and lower charge transfer resistance on PdCu. The EOR activity of PdCu porous sponge-like nanocrystals was superior to all previously reported Pd-based alloys for electrochemical EOR. This study indicates that binary Pd-based catalysts with less synergetic effect are preferred for boosting the EOR activity, which could help in manipulating the surface properties of Pd-based alloys to optimize EOR performance.
Belal Salah, Adewale K. Ipadeola, Aslam Khan, Qingqing Lu, Yassmin Ibrahim, Ebrima L Darboe, Aboubakr M. Abdullah, and Kamel Eid
Elsevier BV
Adewale K. Ipadeola, Ahmed Abdelgawad, Belal Salah, Alaa Ghanem, Mira Chitt, Aboubakr M. Abdullah, and Kamel Eid
Elsevier BV
Adewale K. Ipadeola, Aderemi B. Haruna, Aboubakr M. Abdullah, Mohamed F. Shibl, Doniyorbek Ahmadaliev, Kenneth I. Ozoemena, and Kamel Eid
Elsevier BV
Adewale K. Ipadeola, Ahmed Gamal, Aboubakr M. Abdullah, Aderemi B. Haruna, Kenneth I. Ozoemena, and Kamel Eid
Royal Society of Chemistry (RSC)
Rational fabrication of Ni-metal–organic-framework (MOF)-derived hollow N-doped carbon encapsulated Pd nanocrystals (Pd/Ni-MOF-HNC) has been demonstrated for efficient low-temperature CO oxidation, due to their outstanding catalytic and physicochemical merits.
Belal Salah, Adewale K. Ipadeola, Aboubakr M. Abdullah, Alaa Ghanem, and Kamel Eid
MDPI AG
Tailoring the shape of Pd nanocrystals is one of the main ways to enhance catalytic activity; however, the effect of shapes and electrolyte pH on carbon monoxide oxidation (COOxid) is not highlighted enough. This article presents the controlled fabrication of Pd nanocrystals in different morphologies, including Pd nanosponge via the ice-cooling reduction of the Pd precursor using NaBH4 solution and Pd nanocube via ascorbic acid reduction at 25 °C. Both Pd nanosponge and Pd nanocube are self-standing and have a high surface area, uniform distribution, and clean surface. The electrocatalytic CO oxidation activity and durability of the Pd nanocube were significantly superior to those of Pd nanosponge and commercial Pd/C in only acidic (H2SO4) medium and the best among the three media, due to the multiple adsorption active sites, uniform distribution, and high surface area of the nanocube structure. However, Pd nanosponge had enhanced COOxid activity and stability in both alkaline (KOH) and neutral (NaHCO3) electrolytes than Pd nanocube and Pd/C, attributable to its low Pd-Pd interatomic distance and cleaner surface. The self-standing Pd nanosponge and Pd nanocube were more active than Pd/C in all electrolytes. Mainly, the COOxid current density of Pd nanocube in H2SO4 (5.92 mA/cm2) was nearly 3.6 times that in KOH (1.63 mA/cm2) and 10.3 times that in NaHCO3 (0.578 mA/cm2), owing to the greater charge mobility and better electrolyte–electrode interaction, as evidenced by electrochemical impedance spectroscopy (EIS) analysis. Notably, this study confirmed that acidic electrolytes and Pd nanocube are highly preferred for promoting COOxid and may open new avenues for precluding CO poisoning in alcohol-based fuel cells.
Belal Salah, Ahmed Abdelgawad, Qingqing Lu, Adewale K. Ipadeola, Rafael Luque, and Kamel Eid
Royal Society of Chemistry (RSC)
MnFeM (M = Cu, Ti, and Co) active sites doped porous g-C3N4 nanofibers were developed for efficient electrochemical green H2 production. MnFeCu/g-C3N4 NFs with higher synergism showed the best activity compared to others with less synergism.
Adewale K. Ipadeola, Belal Salah, Alaa Ghanem, Doniyorbek Ahmadaliev, Mohammed A. Sharaf, Aboubakr M. Abdullah, and Kamel Eid
Elsevier BV
Adewale K. Ipadeola, Mira Chitt, Ahmed Abdelgawad, Kamel Eid, and Aboubakr M. Abdullah
Elsevier BV
Adewale K. Ipadeola, Aderemi B. Haruna, Aboubakr M. Abdullah, Rashid S. Al-Hajri, Roman Viter, Kenneth I. Ozoemena, and Kamel Eid
Royal Society of Chemistry (RSC)
Porous ternary Pd-based catalysts at low Pd mass exhibit inimitable surface area, accessible active sites, and tunable electronic structure advantageously utilized for high CO oxidation (COoxid) activity and stability in different electrolyte media.
Adewale K. Ipadeola, Kamel Eid, and Aboubakr M. Abdullah
Elsevier BV
Jimodo J. Ogada, Tobechukwu J. Ehirim, Adewale K. Ipadeola, Aderemi B. Haruna, Patrick V. Mwonga, Aboubakr M. Abdullah, Xiao-Yu Yang, Kamel Eid, Daniel M. Wamwangi, and Kenneth I. Ozoemena
American Chemical Society (ACS)
Porous Pd-based electrocatalysts are promising materials for alkaline direct ethanol fuel cells (ADEFCs) and ethanol sensors in the development of renewable energy and point-of-contact ethanol sensor test kits for drunk drivers. However, experimental and theoretical investigations of the interfacial interaction among Pd nanocrystals on supports (i.e., carbon black (CB), onion-like carbon (OLC), and CeO2/OLC) toward ADEFC and ethanol sensors are not yet reported. This is based on the preparation of Pd-CeO2/OLC nanocrystals by the sol–gel and impregnation methods. Evidently, the porous Pd-CeO2/OLC significantly increased membrane-free micro-3D-printed ADEFC performance with a high peak power density (Pmax = 27.15 mW cm–2) that is 1.38- and 7.58-times those of Pd/OLC (19.72 mW cm–2) and Pd/CB (3.59 mW cm–2), besides its excellent stability for 48 h. This is due to the excellent interfacial interaction among Pd, CeO2, and OLC, evidenced by density functional theory (DFT) simulations that showed a modulated Pd d-band center and facile active oxygenated species formation by the CeO2 needed for ethanol fuel cells. Similarly, Pd-CeO2/OLC gives excellent sensitivity (0.00024 mA mM–1) and limit of detection (LoD = 8.7 mM) for ethanol sensing and satisfactory recoveries (89–108%) in commercial alcoholic beverages (i.e., human serum, Amstel beer, and Nederberg Wine). This study shows the excellent possibility of utilizing Pd-CeO2/OLC for future applications in fuel cells and alcohol sensors.
Adewale K. Ipadeola, Kamel Eid, Aboubakr M. Abdullah, Rashid S. Al-Hajri, and Kenneth I. Ozoemena
Royal Society of Chemistry (RSC)
Correction for ‘Pd/Ni-metal–organic framework-derived porous carbon nanosheets for efficient CO oxidation over a wide pH range’ by Adewale K. Ipadeola et al., Nanoscale Adv., 2022, https://doi.org/10.1039/d2na00455k.
Adewale K. Ipadeola, Kamel Eid, Aboubakr M. Abdullah, and Kenneth I. Ozoemena
American Chemical Society (ACS)
Rational synthesis of Co-ZIF-67 metal-organic framework (MOF)-derived carbon-supported metal nanoparticles is essential for various energy and environmental applications; however, their catalytic activity toward carbon monoxide (CO) oxidation in various electrolytes is not yet emphasized. Co-ZIF-67-derived hierarchical porous carbon nanosheet-supported Pd nanocrystals (Pd/ZIF-67/C) were prepared using a simple microwave-irradiation approach followed by carbonization and etching. Mechanistically, during microwave irradiation, triethyleneamine provides abundant reducing gases that promote the formation of Pd nanoparticles/Co-Nx in porous carbon nanosheets with the assistance of ethylene glycol and also form a multimodal pore size. The electrocatalytic CO oxidation activity and stability of Pd/ZIF-67/C outperformed those of commercial Pd/C and Pt/C catalysts by (4.2 and 4.4, 4.0 and 2.7, 3.59 and 2.7) times in 0.1 M HClO4, 0.1 M KOH, and 0.1 M NaHCO3, respectively, due to the catalytic properties of Pd besides the conductivity of Co-Nx active sites and delicate porous structures of ZIF-67. Notably, using Pd/ZIF-67/C results in a higher CO oxidation activity than Pd/C and Pt/C. This study may pave the way for using MOF-supported multi-metallic nanoparticles for CO oxidation electrocatalysis.
Adewale K. Ipadeola, Kamel Eid, Aboubakr M. Abdullah, Rashid S. Al-Hajri, and Kenneth I. Ozoemena
Royal Society of Chemistry (RSC)
Ni-MOF-derived hierarchical porous carbon nanosheets (Ni-MOF/PC) decorated with Pd nanocrystals (Pd/Ni-MOF/PC) have high electrocatalytic CO oxidation activity in KOH, HClO4, and NaHCO3 electrolytes than Pd/C and Pd/Ni-MOF/C.
Jimodo J. Ogada, Adewale K. Ipadeola, Patrick V. Mwonga, Aderemi B. Haruna, Forrest Nichols, Shaowei Chen, Hamish A. Miller, Maria V. Pagliaro, Francesco Vizza, John R. Varcoe,et al.
American Chemical Society (ACS)
Adewale K. Ipadeola, Kamel Eid, Augustus K. Lebechi, Aboubakr M. Abdullah, and Kenneth I. Ozoemena
Elsevier BV
Augustus K. Lebechi, Adewale K. Ipadeola, Kamel Eid, Aboubakr M. Abdullah, and Kenneth I. Ozoemena
Royal Society of Chemistry (RSC)
This review emphasizes the rational synthesis of porous spinel-type transition metal oxide nanostructures for electrocatalytic oxygen reduction reactions in various electrolytes.
Jimodo J. Ogada, Adewale K. Ipadeola, Patrick V. Mwonga, Aderemi B. Haruna, Forrest Nichols, Shaowei Chen, Hamish A. Miller, Maria V. Pagliaro, Francesco Vizza, John R. Varcoe,et al.
American Chemical Society (ACS)
Nonhlanhla Eugenia Mphahlele, Adewale Kabir Ipadeola, Aderemi Bashiru Haruna, Patrick Vaati Mwonga, Remegia Mmalewane Modibedi, Nithyadharseni Palaniyandy, Caren Billing, and Kenneth Ikechukwu Ozoemena
Elsevier BV
Adewale K. Ipadeola, Augustus K. Lebechi, Lesego Gaolatlhe, Aderemi B. Haruna, Mira Chitt, Kamel Eid, Aboubakr M. Abdullah, and Kenneth I. Ozoemena
Elsevier BV
Adewale K. Ipadeola, Aderemi B. Haruna, Lesego Gaolatlhe, Augustus K. Lebechi, Jiashen Meng, Quanquan Pang, Kamel Eid, Aboubakr M. Abdullah, and Kenneth I. Ozoemena
Wiley
Adewale K. Ipadeola, Patrick V. Mwonga, and Kenneth I. Ozoemena
Elsevier BV