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Ogada J, Ehirim TJ, Ipadeola AK, Haruna AB, Mwonga PV, Abdullah AM, Yang XY, Eid K, Wamwangi DM, Ozoemena KI. Interfacial Electronic Interactions within the Pd-CeO 2/Carbon Onions Define the Efficient Electrocatalytic Ethanol Oxidation Reaction in Alkaline Electrolytes. ACS Omega 2024; 9:7439-7451. [PMID: 38405481 PMCID: PMC10882676 DOI: 10.1021/acsomega.3c04427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/24/2023] [Accepted: 09/27/2023] [Indexed: 02/27/2024]
Abstract
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.
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Affiliation(s)
- Jimodo
J. Ogada
- School
of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
- School
of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Tobechukwu J. Ehirim
- School
of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Adewale K. Ipadeola
- School
of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
- Gas
Processing Center (GPC), College of Engineering, Qatar University, Doha 2713, Qatar
- Center
for Advanced Materials, Qatar University, Doha 2713, Qatar
| | - Aderemi B. Haruna
- School
of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Patrick V. Mwonga
- School
of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
| | | | - Xiao-Yu Yang
- School
of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
- State
Key Laboratory of Advanced Technology for Materials Synthesis and
Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Kamel Eid
- Gas
Processing Center (GPC), College of Engineering, Qatar University, Doha 2713, Qatar
| | - Daniel M. Wamwangi
- School
of Physics, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Kenneth I. Ozoemena
- School
of Chemistry, Molecular Sciences Institute, University of the Witwatersrand, Johannesburg 2050, South Africa
- State
Key Laboratory of Advanced Technology for Materials Synthesis and
Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
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Jiang Y, Fu H, Liang Z, Zhang Q, Du Y. Rare earth oxide based electrocatalysts: synthesis, properties and applications. Chem Soc Rev 2024; 53:714-763. [PMID: 38105711 DOI: 10.1039/d3cs00708a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
As an important strategic resource, rare earths (REs) constitute 17 elements in the periodic table, namely 15 lanthanides (Ln) (La-Lu, atomic numbers from 57 to 71), scandium (Sc, atomic number 21) and yttrium (Y, atomic number 39). In the field of catalysis, the localization and incomplete filling of 4f electrons endow REs with unique physical and chemical properties, including rich electronic energy level structures, variable coordination numbers, etc., making them have great potential in electrocatalysis. Among various RE catalytic materials, rare earth oxide (REO)-based electrocatalysts exhibit excellent performances in electrocatalytic reactions due to their simple preparation process and strong structural variability. At the same time, the electronic orbital structure of REs exhibits excellent electron transfer ability, which can reduce the band gap and energy barrier values of rate-determining steps, further accelerating the electron transfer in the electrocatalytic reaction process; however, there is a lack of systematic review of recent advances in REO-based electrocatalysis. This review systematically summarizes the synthesis, properties and applications of REO-based nanocatalysts and discusses their applications in electrocatalysis in detail. It includes the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), hydrogen oxidation reaction (HOR), oxygen reduction reaction (ORR), carbon dioxide reduction reaction (CO2RR), methanol oxidation reaction (MOR), nitrogen reduction reaction (NRR) and other electrocatalytic reactions and further discusses the catalytic mechanism of REs in the above reactions. This review provides a timely and comprehensive summary of the current progress in the application of RE-based nanomaterials in electrocatalytic reactions and provides reasonable prospects for future electrocatalytic applications of REO-based materials.
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Affiliation(s)
- Yong Jiang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China.
| | - Hao Fu
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China.
- College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhong Liang
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China.
| | - Qian Zhang
- Department of Applied Chemistry, Xi'an University of Technology, Xi'an, 710048, China
| | - Yaping Du
- Tianjin Key Lab for Rare Earth Materials and Applications, Center for Rare Earth and Inorganic Functional Materials, School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin, 300350, China.
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Hu T, Liu J, Yuan H, Zhang L, Wang Y. Interface Charge Distribution Engineering of Pd-CeO 2 /C for Efficient Carbohydrazide Oxidation Reaction. ChemSusChem 2024; 17:e202301078. [PMID: 37723645 DOI: 10.1002/cssc.202301078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 09/20/2023]
Abstract
Carbohydrazide electrooxidation reaction (COR) is a potential alternative to oxygen evolution reaction in water splitting process. However, the sluggish kinetics process impels to develop efficient catalysts with the aim of the widespread use of such catalytic system. Since COR concerns the adsorption/desorption of reactive species on catalysts, the electronic structure of electrocatalyst can affect the catalytic activity. Interface charge distribution engineering can be considered to be an efficient strategy for improving catalytic performance, which facilitates the cleavage of chemical bond. Herein, highly dispersed Pd nanoparticles on CeO2 /C catalyst are prepared and the COR catalytic performance is investigated. The self-driven charge transfer between Pd and CeO2 can form the local nucleophilic and electrophilic region, promoting to the adsorption of electron-withdrawing and electron-donating group in carbohydrazide molecule, which facilitates the cleavage of C-N bond and the carbohydrazide oxidation. Due to the local charge distribution, the Pd-CeO2 /C exhibits superior COR catalytic activity with a potential of 0.27 V to attain 10 mA cm-2 . When this catalyst is used for energy-efficient electrolytic hydrogen production, the carbohydrazide electrolysis configuration exhibits a low cell voltage (0.6 V at 10 mA cm-2 ). This interface charge distribution engineering can provide a novel strategy for improving COR catalytic activity.
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Affiliation(s)
- Tianjun Hu
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, 339 Taiyu Road, TaiYuan, 030032, China
| | - Jiali Liu
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, 339 Taiyu Road, TaiYuan, 030032, China
| | - Hongjie Yuan
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, 339 Taiyu Road, TaiYuan, 030032, China
| | - Limin Zhang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, 339 Taiyu Road, TaiYuan, 030032, China
| | - Ying Wang
- Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education & School of Chemistry and Materials Science, Shanxi Normal University, 339 Taiyu Road, TaiYuan, 030032, China
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Tao J, Xu L, Li C, Xiong S, Xu Z, Shao J, Cao L, Zhang Y, Dong K, Wang LL. Two-dimensional AlN/TMO van der Waals heterojunction as a promising photocatalyst for water splitting driven by visible light. Phys Chem Chem Phys 2023; 25:30924-30933. [PMID: 37937371 DOI: 10.1039/d3cp04120d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
In this study, the photocatalytic properties of AlN/TMO heterojunctions formed by coupling MoO2 and WO2 of transition metal oxides with AlN are studied in detail using first-principles calculations with the aim of finding efficient and low-cost photocatalysts for water splitting to produce hydrogen to reduce environmental pollution. The AIMD, phonon spectrum, and elastic constants demonstrated the thermodynamic, kinetic, and mechanical stabilities of the AlN/TMO heterojunction. The results showed that the AlN/MoO2 (1.55 eV) and AlN/WO2 (1.99 eV) heterojunctions have typical type-II energy band arrangements, which can effectively promote the separation of photogenerated electrons and hole pairs. Meanwhile, the AlN/MoO2 heterojunction showed excellent carrier mobilities (electron, 250.05 cm2 V-1 S-1 and hole, 45 467.07 cm2 V-1 S-1), which greatly exceeded those of each component. The AlN/WO2 heterojunction showed an excellent HER (-0.07 eV) performance, which was close to the expected value. For the AlN/WO2 heterojunction, a suitable band gap value, excellent HER, and other properties indicated that it has the potential to become a new candidate for photocatalytic water splitting. Our study enriches the theoretical research of transition metal oxide materials and wide-band gap materials by providing a reference direction for the design of reasonably high-quality photocatalysts.
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Affiliation(s)
- Ji Tao
- Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Liang Xu
- Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
- Kungfu Sci-tech Co., Ltd, Nanchang 330096, China
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, China.
| | - Can Li
- Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Shixian Xiong
- Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Zhiqiang Xu
- Kungfu Sci-tech Co., Ltd, Nanchang 330096, China
| | - Jingyao Shao
- Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Lei Cao
- Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Ying Zhang
- Nanchang Key Laboratory for Advanced Manufacturing of Electronic Information Materials and Devices, School of Energy and Mechanical Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China.
| | - Kejun Dong
- Centre for Infrastructure Engineering, School of Engineering, Design and Built Environment, Western Sydney University, Penrith, NSW 2751, Australia.
| | - Ling-Ling Wang
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, School of Physics and Electronics, Hunan University, Changsha, 410082, China.
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Wang L, Meng S, Tang C, Zhan C, Geng S, Jiang K, Huang X, Bu L. PtNi/PtIn-Skin Fishbone-Like Nanowires Boost Alkaline Hydrogen Oxidation Catalysis. ACS Nano 2023; 17:17779-17789. [PMID: 37708057 DOI: 10.1021/acsnano.3c02832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
The development of high-performance platinum (Pt)-based electrocatalysts for the hydrogen oxidation reaction (HOR) is highly desirable for hydrogen fuel cells, but it is limited by the sluggish kinetics and severe carbon monoxide (CO) poisoning in alkaline medium. Herein, we explore a class of facet-selected Pt-nickel-indium fishbone-like nanowires (PtNiIn FNWs) featuring high-index facets (HIFs) of Pt3In skin as efficient alkaline HOR catalysts. Impressively, the optimized Pt66Ni6In28 FNWs show the highest mass and specific activities of 4.02 A mgPt-1 and 6.56 mA cm-2, 2.0/2.1 and 13.9/15.6 times larger than those of commercial PtRu/C and commercial Pt/C, respectively, along with a competitive CO-tolerance ability. Specifically, they exhibit only 6.0% current density decay after 10000 s of operation and 25.7% activity loss after 2000 s in the presence of 1000 ppm of CO. Moreover, an isotope experiment and density functional theory (DFT) calculations further prove that the unique structure and synergy among Pt, Ni, and In endow these Pt66Ni6In28 FNWs with an optimized hydrogen binding energy (HBE) and an advantageous hydroxide binding energy (OHBE), giving them excellent alkaline HOR properties. The combined construction of surface-skin and HIFs in PtNiIn FNWs will offer an available method to realize the potential applications of advanced non-PtRu-based catalysts in fuel cells and beyond.
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Affiliation(s)
- Liyuan Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University. Xiamen 361005, People's Republic of China
| | - Shuang Meng
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, People's Republic of China
| | - Chongyang Tang
- School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China
| | - Changhong Zhan
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University. Xiamen 361005, People's Republic of China
| | - Shize Geng
- College of Energy, Xiamen University. Xiamen 361102, People's Republic of China
| | - Kezhu Jiang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300401, People's Republic of China
| | - Xiaoqing Huang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University. Xiamen 361005, People's Republic of China
| | - Lingzheng Bu
- College of Energy, Xiamen University. Xiamen 361102, People's Republic of China
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6
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Hao X, Zhang X, Xu Y, Zhou Y, Wei T, Hu Z, Wu L, Feng X, Zhang J, Liu Y, Yin D, Ma S, Xu B. Atomic-scale insights into the interfacial charge transfer in a NiO/CeO 2 heterostructure for electrocatalytic hydrogen evolution. J Colloid Interface Sci 2023; 643:282-291. [PMID: 37068362 DOI: 10.1016/j.jcis.2023.04.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 04/03/2023] [Accepted: 04/05/2023] [Indexed: 05/12/2023]
Abstract
To understand the underlying mechanism of the interfacial charge transfer and local chemical state variation in the nonprecious-based hydrogen evolution reaction (HER) electrocatalysts, a model system of the NiO/CeO2 heterostructure was chosen for investigation using a combination of the advanced electron microscopic characterization and first-principles calculations. The results directly proved that interfacial charge transfer occurs from Ni to Ce, leading to reduction in the valence state of Ce and increased formation of VO. This would optimize ΔGH* and facilitate the hydrogen evolution process, resulting in outstanding HER performance in 1 M KOH with a low overpotential of 99 mV at the current density of 10 mA•cm-2 and a modest Tafel slope of 78.4 mV•dec-1 for the NiO/CeO2 heterostructure sample. Therefore, the improved HER performance could be attributed to the synergistic coupling interactions and electron redistribution at the interface of NiO and CeO2. These results concretely demonstrate the direct determination of the interfacial structure of the heterostructure and provide atomistic insights to unravel the underlying mechanism of interfacial charge transfer induced HER performance improvement.
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Affiliation(s)
- Xiaodong Hao
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science & Technology, Xi'An 710021, China.
| | - Xishuo Zhang
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science & Technology, Xi'An 710021, China; School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Yang Xu
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science & Technology, Xi'An 710021, China; School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Yuhao Zhou
- School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Tingting Wei
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Zhuangzhuang Hu
- School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Lei Wu
- School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Xinyi Feng
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science & Technology, Xi'An 710021, China; School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Jin Zhang
- School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Yi Liu
- School of Materials Science and Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Deqiang Yin
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Shufang Ma
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science & Technology, Xi'An 710021, China
| | - Bingshe Xu
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science & Technology, Xi'An 710021, China; Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030024, China
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Peteni S, Ozoemena OC, Khawula T, Haruna AB, Rawson FJ, Shai LJ, Ola O, Ozoemena KI. Electrochemical Immunosensor for Ultra-Low Detection of Human Papillomavirus Biomarker for Cervical Cancer. ACS Sens 2023. [PMID: 37384904 PMCID: PMC10391710 DOI: 10.1021/acssensors.3c00677] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/01/2023]
Abstract
Human papillomavirus (HPV) is the causative agent for cervical cancer. Of the various types of HPV, the high-risk HPV-16 type is the most important antigenic high-risk HPV. In this work, the antigenic HPV-16 L1 peptide was immobilized on a glassy carbon electrode and used to detect several concentrations of the anti-HPV-16 L1 antibody, and vice versa. Two electrode platforms were used: onion-like carbon (OLC) and its polyacrylonitrile (OLC-PAN) composites. Both platforms gave a wide linear concentration range (1.95 fg/mL to 6.25 ng/mL), excellent sensitivity (>5.2 μA/log ([HPV-16 L1, fg/mL]), and extra-ordinarily low limit of detection (LoD) of 1.83 fg/mL (32.7 aM) and 0.61 fg/mL (10.9 aM) for OLC-PAN and OLC-based immunosensors, respectively. OLC-PAN modified with the HPV-16 L1 protein showed low LoD for the HPV-16 L1 antibody (2.54 fg/mL, i.e., 45.36 aM), proving its potential use for screening purposes. The specificity of detection was proven with the anti-ovalbumin antibody (anti-OVA) and native ovalbumin protein (OVA). An immobilized antigenic HPV-16 L1 peptide showed insignificant interaction with anti-OVA in contrast with the excellent interaction with anti-HPV-16 L1 antibody, thus proving high specificity. The application of the immunosensor as a potential point-of-care (PoC) diagnostic device was investigated with screen-printed carbon electrodes, which detected ultra-low (ca. 0.7 fg/mL ≈ 12.5 aM) and high (ca. 12 μg/mL ≈ 0.21 μM) concentrations. This study represents the lowest LoD reported for HPV-16 L1. It opens the door for further investigation with other electrode platforms and realization of PoC diagnostic devices for screening and testing of HPV biomarkers for cervical cancer.
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Affiliation(s)
- Siwaphiwe Peteni
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Okoroike C Ozoemena
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Tobile Khawula
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Aderemi B Haruna
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
| | - Frankie J Rawson
- School of Pharmacy, Biodiscovery Institute University of Nottingham, Nottingham NG7 2RD, U.K
| | - Leshweni J Shai
- Department of Biomedical Sciences, Tshwane University of Technology, Pretoria 0001, South Africa
| | - Oluwafunmilola Ola
- Advanced Materials Group, Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, U.K
| | - Kenneth I Ozoemena
- Molecular Science Institute, School of Chemistry, University of the Witwatersrand, Johannesburg 2050, South Africa
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Wang X, Tong Y, Feng W, Liu P, Li X, Cui Y, Cai T, Zhao L, Xue Q, Yan Z, Yuan X, Xing W. Embedding oxophilic rare-earth single atom in platinum nanoclusters for efficient hydrogen electro-oxidation. Nat Commun 2023; 14:3767. [PMID: 37355646 DOI: 10.1038/s41467-023-39475-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 06/15/2023] [Indexed: 06/26/2023] Open
Abstract
Designing Pt-based electrocatalysts with high catalytic activity and CO tolerance is challenging but extremely desirable for alkaline hydrogen oxidation reaction. Herein we report the design of a series of single-atom lanthanide (La, Ce, Pr, Nd, and Lu)-embedded ultrasmall Pt nanoclusters for efficient alkaline hydrogen electro-oxidation catalysis based on vapor filling and spatially confined reduction/growth of metal species. Mechanism studies reveal that oxophilic single-atom lanthanide species in Pt nanoclusters can serve as the Lewis acid site for selective OH- adsorption and regulate the binding strength of intermediates on Pt sites, which promotes the kinetics of hydrogen oxidation and CO oxidation by accelerating the combination of OH- and *H/*CO in kinetics and thermodynamics, endowing the electrocatalyst with up to 14.3-times higher mass activity than commercial Pt/C and enhanced CO tolerance. This work may shed light on the design of metal nanocluster-based electrocatalysts for energy conversion.
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Affiliation(s)
- Xiaoning Wang
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Yanfu Tong
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Wenting Feng
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Pengyun Liu
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Xuejin Li
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Yongpeng Cui
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Tonghui Cai
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Lianming Zhao
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Qingzhong Xue
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Zifeng Yan
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China
| | - Xun Yuan
- School of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, PR China.
| | - Wei Xing
- State Key Laboratory of Heavy Oil Processing, School of Materials Science and Engineering, China University of Petroleum, Qingdao, 266580, PR China.
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Ehirim T, Ozoemena OC, Mwonga PV, Haruna AB, Mofokeng TP, De Wael K, Ozoemena KI. Onion-like Carbons Provide a Favorable Electrocatalytic Platform for the Sensitive Detection of Tramadol Drug. ACS Omega 2022; 7:47892-47905. [PMID: 36591171 PMCID: PMC9798499 DOI: 10.1021/acsomega.2c05722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 10/17/2022] [Indexed: 06/17/2023]
Abstract
This work reports the first study on the possible application of nanodiamond-derived onion-like carbons (OLCs), in comparison with conductive carbon black (CB), as an electrode platform for the electrocatalytic detection of tramadol (an important drug of abuse). The physicochemical properties of OLCs and CB were determined using X-ray diffraction (XRD), Raman, scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), and thermogravimetric analysis (TGA). The OLC exhibits, among others, higher surface area, more surface defects, and higher thermal stability than CB. From the electrochemical analysis (interrogated using cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy), it is shown that an OLC-modified glassy carbon electrode (GCE-OLC) allows faster electron transport and electrocatalysis toward tramadol compared to a GCE-CB. To establish the underlying science behind the high performance of the OLC, theoretical calculations (density functional theory (DFT) simulations) were conducted. DFT predicts that OLC allows for weaker surface binding of tramadol (E ad = -26.656 eV) and faster kinetic energy (K.E. = -155.815 Ha) than CB (E ad = -40.174 eV and -305.322 Ha). The GCE-OLC shows a linear calibration curve for tramadol over the range of ∼55 to 392 μM, with high sensitivity (0.0315 μA/μM) and low limit of detection (LoD) and quantification (LoQ) (3.8 and 12.7 μM, respectively). The OLC-modified screen-printed electrode (SPE-OLC) was successfully applied for the sensitive detection of tramadol in real pharmaceutical formulations and human serum. The OLC-based electrochemical sensor promises to be useful for the sensitive and accurate detection of tramadol in clinics, quality control, and routine quantification of tramadol drugs in pharmaceutical formulations.
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Affiliation(s)
- Tobechukwu
J. Ehirim
- Molecular
Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg2050, South Africa
| | - Okoroike C. Ozoemena
- Molecular
Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg2050, South Africa
| | - Patrick V. Mwonga
- Molecular
Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg2050, South Africa
| | - Aderemi B. Haruna
- Molecular
Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg2050, South Africa
| | - Thapelo P. Mofokeng
- Molecular
Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg2050, South Africa
| | - Karolien De Wael
- A-Sense
Lab, Department of Bioscience Engineering, University of Antwerp, Groenenborgerlaan 171, 2020Antwerp, Belgium
- NANOlab
Center of Excellence, University of Antwerp, Groenenborgerlaan 171, 2020Antwerp, Belgium
| | - Kenneth I. Ozoemena
- Molecular
Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg2050, South Africa
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Pagliaro MV, Bellini M, Bartoli F, Filippi J, Marchionni A, Castello C, Oberhauser W, Poggini L, Cortigiani B, Capozzoli L, Lavacchi A, Miller HA, Vizza F. Probing the effect of metal-CeO2 interactions in carbon supported electrocatalysts on alkaline hydrogen oxidation and evolution reactions. Inorganica Chim Acta 2022; 543:121161. [DOI: 10.1016/j.ica.2022.121161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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11
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Ipadeola AK, Eid K, Abdullah AM, Al-Hajri RS, Ozoemena KI. Pd/Ni-metal-organic framework-derived porous carbon nanosheets for efficient CO oxidation over a wide pH range. Nanoscale Adv 2022; 4:5044-5055. [PMID: 36504739 PMCID: PMC9680948 DOI: 10.1039/d2na00455k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 09/04/2022] [Indexed: 05/26/2023]
Abstract
Metal nanocrystal ornamented metal-organic frameworks (MOFs) are of particular interest in multidisciplinary applications; however, their electrocatalytic CO oxidation performance over wide pH ranges is not yet reported. Herein, Ni-MOF-derived hierarchical porous carbon nanosheets (Ni-MOF/PC) with abundant Ni-N x sites decorated with Pd nanocrystals (Pd/Ni-MOF/PC) were synthesized by microwave-irradiation (MW-I) followed by annealing at 900 °C and subsequent etching of Ni-MOF/C prior to Pd deposition. The fabrication mechanism comprises the generation of self-reduced reducing gases from triethylamine during the annealing and selective chemical etching of Ni, thereby facilitating the reduction of Ni-anchored MOF and Pd nanocrystal deposition with the aid of ethylene glycol and MW-I to yield Pd/Ni-N x enriched MOF/PC. The synthetic strategies endear the Pd/Ni-MOF/PC with unique physicochemical merits: abundant defects, interconnected pores, high electrical conductivity, high surface area, Ni-deficient but more active sites for Pd/Ni-N x in porous carbon nanosheets, and synergism. These merits endowed the CO oxidation activity and stability on Pd/Ni-MOF/PC substantially than those of Pd/Ni-MOF/C and Pd/C catalysts in wide pH conditions (i.e., KOH, HClO4, and NaHCO3). The CO oxidation activity study reveals the utilization of MOF/PC with metal nanocrystals (Pd/Ni) in CO oxidation catalysis.
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Affiliation(s)
| | - Kamel Eid
- Gas Processing Center (GPC), College of Engineering, Qatar University Doha 2713 Qatar
| | | | - Rashid S Al-Hajri
- Petroleum and Chemical Engineering Department, Sultan Qaboos University Muscat Oman
| | - Kenneth I Ozoemena
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, PO Wits Johannesburg 2050 South Africa
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Bampos G, Tsatsos S, Kyriakou G, Bebelis S. Pd-based bimetallic electrocatalysts for hydrogen oxidation reaction in acidic medium. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.117008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Ipadeola AK, Eid K, Abdullah AM, Ozoemena KI. Pd-Nanoparticles Embedded Metal-Organic Framework-Derived Hierarchical Porous Carbon Nanosheets as Efficient Electrocatalysts for Carbon Monoxide Oxidation in Different Electrolytes. Langmuir 2022; 38:11109-11120. [PMID: 36040806 DOI: 10.1021/acs.langmuir.2c01841] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
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.
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Affiliation(s)
| | - Kamel Eid
- Gas Processing Center (GPC), College of Engineering, Qatar University, Doha 2713, Qatar
| | | | - Kenneth I Ozoemena
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, PO Wits, Johannesburg 2050, South Africa
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Brazdil JF. The Emergence of the Ubiquity of Cerium in Heterogeneous Oxidation Catalysis Science and Technology. Catalysts 2022; 12:959. [DOI: 10.3390/catal12090959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Research into the incorporation of cerium into a diverse range of catalyst systems for a wide spectrum of process chemistries has expanded rapidly. This has been evidenced since about 1980 in the increasing number of both scientific research journals and patent publications that address the application of cerium as a component of a multi-metal oxide system and as a support material for metal catalysts. This review chronicles both the applied and fundamental research into cerium-containing oxide catalysts where cerium’s redox activity confers enhanced and new catalytic functionality. Application areas of cerium-containing catalysts include selective oxidation, combustion, NOx remediation, and the production of sustainable chemicals and materials via bio-based feedstocks, among others. The newfound interest in cerium-containing catalysts stems from the benefits achieved by cerium’s inclusion, which include selectivity, activity, and stability. These benefits arise because of cerium’s unique combination of chemical and thermal stability, its redox active properties, its ability to stabilize defect structures in multicomponent oxides, and its propensity to stabilize catalytically optimal oxidation states of other multivalent elements. This review surveys the origins and some of the current directions in the research and application of cerium oxide-based catalysts.
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Pagliaro MV, Wen C, Sa B, Liu B, Bellini M, Bartoli F, Sahoo S, Singh RK, Alpay SP, Miller HA, Dekel DR. Improving Alkaline Hydrogen Oxidation Activity of Palladium through Interactions with Transition-Metal Oxides. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Maria V. Pagliaro
- Institute of Chemistry of OrganoMetallic Compounds, CNR-ICCOM, Via Madonna del Piano, 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Cuilian Wen
- Multiscale Computational Materials Facility, and Key Laboratory of Eco-materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, Fuzhou 350100, P. R. China
| | - Baisheng Sa
- Multiscale Computational Materials Facility, and Key Laboratory of Eco-materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, Fuzhou 350100, P. R. China
| | - Baoyu Liu
- Multiscale Computational Materials Facility, and Key Laboratory of Eco-materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, Fuzhou 350100, P. R. China
| | - Marco Bellini
- Institute of Chemistry of OrganoMetallic Compounds, CNR-ICCOM, Via Madonna del Piano, 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Francesco Bartoli
- Institute of Chemistry of OrganoMetallic Compounds, CNR-ICCOM, Via Madonna del Piano, 10, 50019 Sesto Fiorentino, Florence, Italy
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via Aldo Moro 2, Siena 53100, Italy
| | - Sanjubala Sahoo
- Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Ramesh K. Singh
- The Wolfson Department of Chemical Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
- The Nancy & Stephen Grand Technion Energy Program, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - S. Pamir Alpay
- Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Hamish A. Miller
- Institute of Chemistry of OrganoMetallic Compounds, CNR-ICCOM, Via Madonna del Piano, 10, 50019 Sesto Fiorentino, Florence, Italy
| | - Dario R. Dekel
- The Wolfson Department of Chemical Engineering, Technion - Israel Institute of Technology, Haifa 3200003, Israel
- The Nancy & Stephen Grand Technion Energy Program, Technion - Israel Institute of Technology, Haifa 3200003, Israel
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Ipadeola AK, Eid K, Lebechi AK, Abdullah AM, Ozoemena KI. Porous multi-metallic Pt-based nanostructures as efficient electrocatalysts for ethanol oxidation: A mini-review. Electrochem commun 2022. [DOI: 10.1016/j.elecom.2022.107330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Yang Y, Li P, Zheng X, Sun W, Dou SX, Ma T, Pan H. Anion-exchange membrane water electrolyzers and fuel cells. Chem Soc Rev 2022; 51:9620-9693. [DOI: 10.1039/d2cs00038e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The key components, working management, and operating techniques of anion-exchange membrane water electrolyzers and fuel cells are reviewed for the first time.
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Affiliation(s)
- Yaxiong Yang
- Institute of Science and Technology for New Energy, Xi’an Technological University, Xi’an, 710021, P. R. China
| | - Peng Li
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
- Institute for Superconducting & Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Xiaobo Zheng
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Wenping Sun
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, P. R. China
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, P. R. China
| | - Shi Xue Dou
- Institute of Energy Material Science, University of Shanghai for Science and Technology, Shanghai 200093, China
- Institute for Superconducting & Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi’an Technological University, Xi’an, 710021, P. R. China
- School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, P. R. China
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