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Gupta S, De M. Role of metal (Cu/Ni/Fe/Co)-carbon composite in enhancing electro-oxidation of ethylene glycol. J APPL ELECTROCHEM 2023. [DOI: 10.1007/s10800-023-01883-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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2
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Maiti TK, Majhi J, Maiti SK, Singh J, Dixit P, Rohilla T, Ghosh S, Bhushan S, Chattopadhyay S. Zirconia- and ceria-based electrolytes for fuel cell applications: critical advancements toward sustainable and clean energy production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:64489-64512. [PMID: 35864400 DOI: 10.1007/s11356-022-22087-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Solid oxide fuel cells (SOFCs) are emerging as energy conversion devices for large-scale electrical power generation because of their high energy conversion efficiency, excellent ability to minimize air pollution, and high fuel flexibility. In this context, this critical review has focussed on the recent advancements in developing a suitable electrolyte for SOFCs which has been required for the commercialization of SOFC technology after emphasizing the literature from the prior studies. In particular, the significant developments in the field of solid oxide electrolytes for SOFCs, particularly zirconia- and ceria-based electrolytes, have been highlighted as important advancements toward the production of sustainable and clean energy. It has been reported that among various electrolyte materials, zirconia-based electrolytes have the potential to be utilized as the electrolyte in SOFC because of their high thermal stability, non-reducing nature, and high mechanical strength, along with acceptable oxygen ion conductivity. However, some studies have proved that the zirconia-based electrolytes are not suitable for low and intermediate-temperature working conditions because of their poor ionic conductivity to below 850 °C. On the other hand, ceria-based electrolytes are being investigated at a rapid pace as electrolytes for intermediate and low-temperature SOFCs due to their higher oxygen ion conductivity with good electrode compatibility, especially at lower temperatures than stabilized zirconia. In addition, the most emerging advancements in electrolyte materials have demonstrated that the intermediate temperature SOFCs as next-generation energy conversion technology have great potential for innumerable prospective applications.
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Affiliation(s)
- Tushar Kanti Maiti
- Department of Polymer and Process Engineering, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India
| | - Jagannath Majhi
- Department of Polymer and Process Engineering, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India
| | - Subrata Kumar Maiti
- Department of Polymer and Process Engineering, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India
| | - Jitendra Singh
- Department of Polymer and Process Engineering, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India
| | - Prakhar Dixit
- Department of Polymer and Process Engineering, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India
| | - Tushita Rohilla
- Department of Mechanical Engineering, IIT Ropar, Punjab, 140 001, India
| | - Samaresh Ghosh
- Department of Polymer and Process Engineering, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India
| | - Sakchi Bhushan
- Department of Paper Technology, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India
| | - Sujay Chattopadhyay
- Department of Polymer and Process Engineering, IIT Roorkee Saharanpur Campus, Saharanpur, 247001, India.
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3
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Emran MY, Shenashen MA, El-Safty SA, Selim MM. Design of porous S-doped carbon nanostructured electrode sensor for sensitive and selective detection of guanine from DNA samples. MICROPOROUS AND MESOPOROUS MATERIALS 2021; 320:111097. [DOI: 10.1016/j.micromeso.2021.111097] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Di Y, Ma C, Fu Y, Dong X, Liu X, Ma H. Engineering Cationic Sulfur-Doped Co 3O 4 Architectures with Exposing High-Reactive (112) Facets for Photoelectrocatalytic Water Purification. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8405-8416. [PMID: 33566566 DOI: 10.1021/acsami.0c20353] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Promoting the generation of intermediate active species (superoxide radical (•O2-)) is an important and challenging task for water purification by photoelectrocatalytic (PEC) oxidation. Herein, we have constructed hierarchical cationic sulfur-doped Co3O4 architectures with controllable morphology and highly exposed reactive facets by introducing l-cysteine as a capping reagent and sulfur resource via a one-step hydrothermal reaction. The as-obtained cationic sulfur (1.8 mmol l-cysteine) source doped Co3O4 (SC-1.8) architectures with highly exposed (112) facets exhibited superior PEC activities and long-term stability (∼25,000 s) in 1.0 mol·L-1 sulfuric acid for an accelerated reactive brilliant blue KN-R degradation test. Our experimental and theoretical results confirmed that the superior PEC performance of the SC-1.8 architectures could be ascribed the following factors: (1) the highly exposed reactive (112) facets of SC-1.8 promoted carrier transport and diffusion during the PEC process and facilitated separating the electron/hole pairs and producing the predominant active species (•O2-) compared with currently used other electrodes. (2) Cationic sulfur doped on the lattice of Co3O4 can narrow the band gap to extend the photoadsorption range and improve the lifetime of •O2- to enhance the PEC efficiency. This work not only proves that the SC-1.8 architectures with highly exposed (112) facets are a promising PEC catalyst due to increasing the electron transport and the lifetime of active species but also presents a new strategy for constructing an active PEC catalyst.
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Affiliation(s)
- Yanwei Di
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Ganjingzi District, Dalian 116034, P.R. China
| | - Chun Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Ganjingzi District, Dalian 116034, P.R. China
| | - Yinghuan Fu
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Ganjingzi District, Dalian 116034, P.R. China
| | - Xiaoli Dong
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Ganjingzi District, Dalian 116034, P.R. China
| | - Xinghui Liu
- Department of Chemistry, Sungkyunkwan University (SKKU), 2066 Seoburo, Jangan-Gu, Suwon 16419, Republic of Korea
| | - Hongchao Ma
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Ganjingzi District, Dalian 116034, P.R. China
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5
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Khalifa H, El-Safty SA, Reda A, Eid A, Elmarakbi A, Shenashen MA. Mesoscopic open-eye core-shell spheroid carved anode/cathode electrodes for fully reversible and dynamic lithium-ion battery models. NANOSCALE ADVANCES 2020; 2:3525-3541. [PMID: 36134271 PMCID: PMC9418016 DOI: 10.1039/d0na00203h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 06/19/2020] [Indexed: 06/16/2023]
Abstract
We report on the key influence of mesoscopic super-open-eye core-shell spheroids of TiO2- and LiFePO4-wrapped nanocarbon carved anode/cathode electrodes with uniform interior accommodation/storage pockets for the creation of fully reversible and dynamic Li-ion power battery (LIB) models. The mesoscopic core-shell anode/cathode electrodes provide potential half- and full-cell LIB-CR2032 configuration designs, and large-scale pouch models. In these variable mesoscopic LIB models, the broad-free-access and large-open-eye like gate-in-transport surfaces featured electrodes are key factors of built-in LIBs with excellent charge/discharge capacity, energy density performances, and outstanding cycling stability. Mesoscopic open-eye spheroid full-LIB-CR2032 configuration models retain 77.8% of the 1st cycle discharge specific capacity of 168.68 mA h g-1 after multiple cycling (i.e., 1st to 2000th cycles), efficient coulombic performance of approximately 99.6% at 0.1C, and high specific energy density battery of approximately 165.66 W h kg-1 at 0.1C. Furthermore, we have built a dynamic, super-open-mesoeye pouch LIB model using dense packing sets that are technically significant to meet the tradeoff requirements and long-term driving range of electric vehicles (EVs). The full-pouch package LIB models retain a powerful gate-in-transport system for heavy loaded electron/Li+ ion storage, diffusion, and truck movement through open-ended out/in and then up/downward eye circular/curvy folds, thereby leading to substantial durability, and remarkable electrochemical performances even after long-life charge/discharge cycling.
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Affiliation(s)
- H Khalifa
- National Institute for Materials Science (NIMS) Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan https://www.samurai.nims.go.jp/profiles/sherif_elsafty
| | - S A El-Safty
- National Institute for Materials Science (NIMS) Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan https://www.samurai.nims.go.jp/profiles/sherif_elsafty
| | - A Reda
- National Institute for Materials Science (NIMS) Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan https://www.samurai.nims.go.jp/profiles/sherif_elsafty
| | - A Eid
- National Institute for Materials Science (NIMS) Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan https://www.samurai.nims.go.jp/profiles/sherif_elsafty
| | - A Elmarakbi
- Department of Mechanical & Construction Engineering, Faculty of Engineering and Environment, Northumbria University Newcastle upon Tyne NE1 8ST UK
| | - M A Shenashen
- National Institute for Materials Science (NIMS) Sengen 1-2-1 Tsukuba Ibaraki 305-0047 Japan https://www.samurai.nims.go.jp/profiles/sherif_elsafty
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6
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Garlyyev B, Xue S, Fichtner J, Bandarenka AS, Andronescu C. Prospects of Value-Added Chemicals and Hydrogen via Electrolysis. CHEMSUSCHEM 2020; 13:2513-2521. [PMID: 32059064 PMCID: PMC7318696 DOI: 10.1002/cssc.202000339] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Indexed: 06/10/2023]
Abstract
Cost is a major drawback that limits the industrial-scale hydrogen production through water electrolysis. The overall cost of this technology can be decreased by coupling the electrosynthesis of value-added chemicals at the anode side with electrolytic hydrogen generation at the cathode. This Minireview provides a directory of anodic oxidation reactions that can be combined with cathodic hydrogen generation. The important parameters for selecting the anodic reactions, such as choice of catalyst material and its selectivity towards specific products are elaborated in detail. Furthermore, various novel electrolysis cell architectures for effortless separation of value-added products from hydrogen gas are described.
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Affiliation(s)
- Batyr Garlyyev
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Song Xue
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Johannes Fichtner
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Aliaksandr S. Bandarenka
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Corina Andronescu
- Technical Chemistry IIIFaculty of Chemistry and CENIDEUniversity Duisburg-EssenCarl-Benz-Straße 19947057DuisburgGermany
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7
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Khalifa H, El-Safty SA, Reda A, Shenashen MA, Eid AI. Anisotropic alignments of hierarchical Li 2SiO 3/TiO 2 @nano-C anode//LiMnPO 4@nano-C cathode architectures for full-cell lithium-ion battery. Natl Sci Rev 2020; 7:863-880. [PMID: 34692109 PMCID: PMC8289010 DOI: 10.1093/nsr/nwaa017] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/06/2019] [Accepted: 02/10/2020] [Indexed: 11/13/2022] Open
Abstract
We report on low-cost fabrication and high-energy density of full-cell lithium-ion battery (LIB) models. Super-hierarchical electrode architectures of Li2SiO3/TiO2@nano-carbon anode (LSO.TO@nano-C) and high-voltage olivine LiMnPO4@nano-carbon cathode (LMPO@nano-C) are designed for half- and full-system LIB-CR2032 coin cell models. On the basis of primary architecture-power-driven LIB geometrics, the structure keys including three-dimensional (3D) modeling superhierarchy, multiscale micro/nano architectures and anisotropic surface heterogeneity affect the buildup design of anode/cathode LIB electrodes. Such hierarchical electrode surface topologies enable continuous in-/out-flow rates and fast transport pathways of Li+-ions during charge/discharge cycles. The stacked layer configurations of pouch LIB-types lead to excellent charge/discharge rate, and energy density of 237.6 Wh kg-1. As the most promising LIB-configurations, the high specific energy density of hierarchical pouch battery systems may improve energy storage for long-driving range of electric vehicles. Indeed, the anisotropic alignments of hierarchical electrode architectures in the large-scale LIBs provide proof of excellent capacity storage and outstanding durability and cyclability. The full-system LIB-CR2032 coin cell models maintain high specific capacity of ∼89.8% within a long-term life period of 2000 cycles, and average Coulombic efficiency of 99.8% at 1C rate for future configuration of LIB manufacturing and commercialization challenges.
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Affiliation(s)
- Hesham Khalifa
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - Sherif A El-Safty
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - Abdullah Reda
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0047, Japan
| | - Mohamed A Shenashen
- Department of Petrochemical, Egyptian Petroleum Research Institute, Cairo 11727, Egypt
| | - Alaa I Eid
- Composite Lab, Advanced Materials Division, Central Metallurgical R&D Institute, Helwan 11421, Egypt
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8
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El-Safty S, Shenashen M. Nanoscale dynamic chemical, biological sensor material designs for control monitoring and early detection of advanced diseases. Mater Today Bio 2020; 5:100044. [PMID: 32181446 PMCID: PMC7066237 DOI: 10.1016/j.mtbio.2020.100044] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 12/25/2022] Open
Abstract
Early detection and easy continuous monitoring of emerging or re-emerging infectious, contagious or other diseases are of particular interest for controlling healthcare advances and developing effective medical treatments to reduce the high global cost burden of diseases in the backdrop of lack of awareness regarding advancing diseases. Under an ever-increasing demand for biosensor design reliability for early stage recognition of infectious agents or contagious diseases and potential proteins, nanoscale manufacturing designs had developed effective nanodynamic sensing assays and compact wearable devices. Dynamic developments of biosensor technology are also vital to detect and monitor advanced diseases, such as human immunodeficiency virus (HIV), hepatitis B virus (HBV), hepatitis C virus (HCV), diabetes, cancers, liver diseases, cardiovascular diseases (CVDs), tuberculosis, and central nervous system (CNS) disorders. In particular, nanoscale biosensor designs have indispensable contribution to improvement of health concerns by early detection of disease, monitoring ecological and therapeutic agents, and maintaining high safety level in food and cosmetics. This review reports an overview of biosensor designs and their feasibility for early investigation, detection, and quantitative determination of many advanced diseases. Biosensor strategies are highlighted to demonstrate the influence of nanocompact and lightweight designs on accurate analyses and inexpensive sensing assays. To date, the effective and foremost developments in various nanodynamic designs associated with simple analytical facilities and procedures remain challenging. Given the wide evolution of biosensor market requirements and the growing demand in the creation of early stage and real-time monitoring assays, precise output signals, and easy-to-wear and self-regulating analyses of diseases, innovations in biosensor designs based on novel fabrication of nanostructured platforms with active surface functionalities would produce remarkable biosensor devices. This review offers evidence for researchers and inventors to focus on biosensor challenge and improve fabrication of nanobiosensors to revolutionize consumer and healthcare markets.
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Affiliation(s)
- S.A. El-Safty
- National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukubashi, Ibaraki-ken, 305-0047, Japan
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9
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Selim MS, El-Safty SA, Shenashen MA, Higazy SA, Elmarakbi A. Progress in biomimetic leverages for marine antifouling using nanocomposite coatings. J Mater Chem B 2020; 8:3701-3732. [DOI: 10.1039/c9tb02119a] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Because of the environmental and economic casualties of biofouling on maritime navigation, modern studies have been devoted toward formulating advanced nanoscale composites in the controlled development of effective marine antifouling self-cleaning surfaces.
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Affiliation(s)
- Mohamed S. Selim
- National Institute for Materials Science (NIMS)
- Ibaraki-ken 305-0047
- Japan
- Petroleum Application Department
- Egyptian Petroleum Research Institute
| | - Sherif A. El-Safty
- National Institute for Materials Science (NIMS)
- Ibaraki-ken 305-0047
- Japan
| | - Mohamed A. Shenashen
- National Institute for Materials Science (NIMS)
- Ibaraki-ken 305-0047
- Japan
- Petroleum Application Department
- Egyptian Petroleum Research Institute
| | - Shimaa A. Higazy
- Petroleum Application Department
- Egyptian Petroleum Research Institute
- Cairo
- Egypt
| | - Ahmed Elmarakbi
- Department of Mechanical & Construction Engineering
- Faculty of Engineering and Environment
- Northumbria University
- Newcastle upon Tyne
- UK
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10
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Khalifa H, El-Safty SA, Reda A, Shenashen MA, Selim MM, Alothman OY, Ohashi N. Meso/macroscopically multifunctional surface interfaces, ridges, and vortex-modified anode/cathode cuticles as force-driven modulation of high-energy density of LIB electric vehicles. Sci Rep 2019; 9:14701. [PMID: 31605015 PMCID: PMC6789099 DOI: 10.1038/s41598-019-51345-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 09/16/2019] [Indexed: 11/20/2022] Open
Abstract
Modulation of lithium-ion battery (LIB) anodes/cathodes with three-dimensional (3D) topographical hierarchy ridges, surface interfaces, and vortices promotes the power tendency of LIBs in terms of high-energy density and power density. Large-scale meso-geodesics offer a diverse range of spatial LIB models along the geodetically shaped downward/upward curvature, leading to open-ended movement gate options, and diffusible space orientations. Along with the primary 3D super-scalable hierarchy, the formation of structural features of building block egress/ingress, curvature cargo-like sphere vehicles, irregularly located serrated cuticles with abundant V-undulated rigidness, feathery tube pipe conifers, and a band of dagger-shaped needle sticks on anode/cathode electrode surfaces provides high performance LIB modules. The geodetically-shaped anode/cathode design enables the uniqueness of all LIB module configurations in terms of powerful lithium ion (Li+) movement revolving in out-/in- and up-/downward diffusion regimes and in hovering electron density for high-speed discharge rates. The stability of built-in anode//cathode full-scale LIB-model meso-geodesics affords an outstanding long-term cycling performance. The full-cell LIB meso-geodesics offered 91.5% retention of the first discharge capacity of 165.8 mAhg-1 after 2000 cycles, Coulombic efficiency of ~99.6% at the rate of 1 C and room temperature, and high specific energy density of ≈119 Wh kg-1. This LIB meso-geodesic module configuration may align perfectly with the requirements of the energy density limit mandatory for long-term EV driving range and the scale-up commercial manufactures.
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Affiliation(s)
- H Khalifa
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan
| | - S A El-Safty
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan.
| | - A Reda
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan
| | - M A Shenashen
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan
| | - M M Selim
- Department of Mathematics, Al-Aflaj College of Science and Human Studies, Prince Sattam Bin Abdulaziz University, Al-Aflaj, 710-11912, Saudi Arabia
| | - O Y Alothman
- Chemical Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh, 11421, Saudi Arabia
| | - N Ohashi
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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11
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Khalifa H, El-Safty SA, Reda A, Shenashen MA, Selim MM, Elmarakbi A, Metawa HA. Theoretical and Experimental Sets of Choice Anode/Cathode Architectonics for High-Performance Full-Scale LIB Built-up Models. NANO-MICRO LETTERS 2019; 11:84. [PMID: 34138059 PMCID: PMC7770700 DOI: 10.1007/s40820-019-0315-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 09/10/2019] [Indexed: 05/31/2023]
Abstract
To control the power hierarchy design of lithium-ion battery (LIB) built-up sets for electric vehicles (EVs), we offer intensive theoretical and experimental sets of choice anode/cathode architectonics that can be modulated in full-scale LIB built-up models. As primary structural tectonics, heterogeneous composite superstructures of full-cell-LIB (anode//cathode) electrodes were designed in closely packed flower agave rosettes TiO2@C (FRTO@C anode) and vertical-star-tower LiFePO4@C (VST@C cathode) building blocks to regulate the electron/ion movement in the three-dimensional axes and orientation pathways. The superpower hierarchy surfaces and multi-directional orientation components may create isosurface potential electrodes with mobile electron movements, in-to-out interplay electron dominances, and electron/charge cloud distributions. This study is the first to evaluate the hotkeys of choice anode/cathode architectonics to assemble different LIB-electrode platforms with high-mobility electron/ion flows and high-performance capacity functionalities. Density functional theory calculation revealed that the FRTO@C anode and VST-(i)@C cathode architectonics are a superior choice for the configuration of full-scale LIB built-up models. The integrated FRTO@C//VST-(i)@C full-scale LIB retains a huge discharge capacity (~ 94.2%), an average Coulombic efficiency of 99.85% after 2000 cycles at 1 C, and a high energy density of 127 Wh kg-1, thereby satisfying scale-up commercial EV requirements.
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Affiliation(s)
- H Khalifa
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan
- Department of Physics, Faculty of Science, Damanhur University, Damanhur, Egypt
| | - S A El-Safty
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan.
| | - A Reda
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan
| | - M A Shenashen
- National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki, 305-0047, Japan
| | - M M Selim
- Department of Mathematics, Al-Aflaj College of Science and Human Studies, Prince Sattam Bin Abdulaziz University, Al-Aflaj, 710-11912, Saudi Arabia
| | - A Elmarakbi
- Department of Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| | - H A Metawa
- Department of Physics, Faculty of Science, Damanhur University, Damanhur, Egypt
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12
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Bai G, Liu C, Gao Z, Lu B, Tong X, Guo X, Yang N. Atomic Carbon Layers Supported Pt Nanoparticles for Minimized CO Poisoning and Maximized Methanol Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902951. [PMID: 31353799 DOI: 10.1002/smll.201902951] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Indexed: 06/10/2023]
Abstract
Maximizing activity of Pt catalysts toward methanol oxidation reaction (MOR) together with minimized poisoning of adsorbed CO during MOR still remains a big challenge. In the present work, uniform and well-distributed Pt nanoparticles (NPs) grown on an atomic carbon layer, that is in situ formed by means of dry-etching of silicon carbide nanoparticles (SiC NPs) with CCl4 gas, are explored as potential catalysts for MOR. Significantly, as-synthesized catalysts exhibit remarkably higher MOR catalytic activity (e.g., 647.63 mA mg-1 at a peak potential of 0.85 V vs RHE) and much improved anti-CO poisoning ability than the commercial Pt/C catalysts, Pt/carbon nanotubes, and Pt/graphene catalysts. Moreover, the amount of expensive Pt is a few times lower than that of the commercial and reported catalyst systems. As confirmed from density functional theory (DFT) calculations and X-ray absorption fine structure (XAFS) measurements, such high performance is due to reduced adsorption energy of CO on the Pt NPs and an increased amount of adsorbed energy OH species that remove adsorbed CO fast and efficiently. Therefore, these catalysts can be utilized for the development of large-scale and industry-orientated direct methanol fuel cells.
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Affiliation(s)
- Gailing Bai
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
- Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan, 030008, China
| | - Chang Liu
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhe Gao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Baoying Lu
- Guangxi University of Science and Technology, Liuzhou, 545000, China
| | - Xili Tong
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
| | - Xiangyun Guo
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Nianjun Yang
- Institute of Materials Engineering, University of Siegen, Siegen, 57076, Germany
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13
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Bai J, Liu D, Yang J, Chen Y. Nanocatalysts for Electrocatalytic Oxidation of Ethanol. CHEMSUSCHEM 2019; 12:2117-2132. [PMID: 30834720 DOI: 10.1002/cssc.201803063] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 03/01/2019] [Indexed: 06/09/2023]
Abstract
The use of ethanol as a fuel in direct alcohol fuel cells depends not only on its ease of production from renewable sources, but also on overcoming the challenges of storage and transportation. In an ethanol-based fuel cell, highly active electrocatalysts are required to break the C-C bond in ethanol for its complete oxidation at lower overpotentials, with the aim of increasing the cell performance, ethanol conversion rates, and fuel efficiency. In recent decades, the development of wet-chemistry methods has stimulated research into catalyst design, reactivity tailoring, and mechanistic investigations, and thus, created great opportunities to achieve efficient oxidation of ethanol. In this Minireview, the nanomaterials tested as electrocatalysts for the ethanol oxidation reaction in acid or alkaline environments are summarized. The focus is mainly on nanomaterials synthesized by using wet-chemistry methods, with particular attention on the relationship between the chemical and physical characteristics of the catalysts, for example, catalyst composition, morphology, structure, degree of alloying, presence of oxides or supports, and their activity for ethanol electro-oxidation. As potential alternatives to noble metals, non-noble-metal catalysts for ethanol oxidation are also briefly reviewed. Insights into further enhancing the catalytic performance through the design of efficient electrocatalysts are also provided.
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Affiliation(s)
- Juan Bai
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of, Education), Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, PR China
| | - Danye Liu
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Address, Chinese Academy of Sciences, Beijing, 100190, PR China
- University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Jun Yang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Address, Chinese Academy of Sciences, Beijing, 100190, PR China
- University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yu Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of, Education), Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710062, PR China
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14
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Alkan B, Cychy S, Varhade S, Muhler M, Schulz C, Schuhmann W, Wiggers H, Andronescu C. Spray‐Flame‐Synthesized LaCo
1−
x
Fe
x
O
3
Perovskite Nanoparticles as Electrocatalysts for Water and Ethanol Oxidation. ChemElectroChem 2019. [DOI: 10.1002/celc.201900168] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Baris Alkan
- IVG, Institute for Combustion and Gas Dynamics -Reactive Fluids and CENIDE, Center for NanointegrationUniversity of Duisburg-Essen Carl-Benz-Str. 199 47057 Duisburg Germany
| | - Steffen Cychy
- Laboratory of Industrial ChemistryFaculty of Chemistry and BiochemistryRuhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Swapnil Varhade
- Analytical ChemistryCenter of Electrochemical Sciences (CES)Faculty of Chemistry and BiochemistryRuhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Martin Muhler
- Laboratory of Industrial ChemistryFaculty of Chemistry and BiochemistryRuhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Christof Schulz
- IVG, Institute for Combustion and Gas Dynamics -Reactive Fluids and CENIDE, Center for NanointegrationUniversity of Duisburg-Essen Carl-Benz-Str. 199 47057 Duisburg Germany
| | - Wolfgang Schuhmann
- Analytical ChemistryCenter of Electrochemical Sciences (CES)Faculty of Chemistry and BiochemistryRuhr University Bochum Universitätsstr. 150 44801 Bochum Germany
| | - Hartmut Wiggers
- IVG, Institute for Combustion and Gas Dynamics -Reactive Fluids and CENIDE, Center for NanointegrationUniversity of Duisburg-Essen Carl-Benz-Str. 199 47057 Duisburg Germany
| | - Corina Andronescu
- Chemical Technology IIIFaculty of Chemistry and CENIDE Center for Nanointegration University of Duisburg-Essen Carl-Benz-Str. 199 47057 Duisburg Germany
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15
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Titanium Dioxide (TiO2) Mesocrystals: Synthesis, Growth Mechanisms and Photocatalytic Properties. Catalysts 2019. [DOI: 10.3390/catal9010091] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Hierarchical TiO2 superstructures with desired architectures and intriguing physico-chemical properties are considered to be one of the most promising candidates for solving the serious issues related to global energy exhaustion as well as environmental deterioration via the well-known photocatalytic process. In particular, TiO2 mesocrystals, which are built from TiO2 nanocrystal building blocks in the same crystallographical orientation, have attracted intensive research interest in the area of photocatalysis owing to their distinctive structural properties such as high crystallinity, high specific surface area, and single-crystal-like nature. The deeper understanding of TiO2 mesocrystals-based photocatalysis is beneficial for developing new types of photocatalytic materials with multiple functionalities. In this paper, a comprehensive review of the recent advances toward fabricating and modifying TiO2 mesocrystals is provided, with special focus on the underlying mesocrystallization mechanism and controlling rules. The potential applications of as-synthesized TiO2 mesocrystals in photocatalysis are then discussed to shed light on the structure–performance relationships, thus guiding the development of highly efficient TiO2 mesocrystal-based photocatalysts for certain applications. Finally, the prospects of future research on TiO2 mesocrystals in photocatalysis are briefly highlighted.
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16
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Hu J, He H, Li L, Zhou X, Li Z, Shen Q, Wu C, Asiri AM, Zhou Y, Zou Z. Highly symmetrical, 24-faceted, concave BiVO4 polyhedron bounded by multiple high-index facets for prominent photocatalytic O2 evolution under visible light. Chem Commun (Camb) 2019; 55:4777-4780. [DOI: 10.1039/c9cc01366k] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly symmetrical, 24-faceted, concave BiVO4 polyhedron bounded by multiple high-index facets was designed to exhibit prominent photocatalytic O2 evolution under visible light.
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17
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Emran MY, Shenashen MA, Morita H, El-Safty SA. 3D-Ridge Stocked Layers of Nitrogen-Doped Mesoporous Carbon Nanosheets for Ultrasensitive Monitoring of Dopamine Released from PC12 Cells under K + Stimulation. Adv Healthc Mater 2018; 7:e1701459. [PMID: 29877062 DOI: 10.1002/adhm.201701459] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 04/18/2018] [Indexed: 12/11/2022]
Abstract
3D-ridge nanosheets of N-doped mesoporous carbon (NMCS)-based electrodes are fabricated as ultrasensitive biosensors for in vitro monitoring of dopamine (DA) released from living cells. The large-scale ranges of dense-layered sheets are arranged linearly with a thickness of <10 nm, soft tangled edges, stocked layer arrangements, and tunable mesoporous frameworks with 3D orientations. The intrinsic features of the active interfacial surface of the electrode based on NMCS along with polarized surfaces, dense surface-charged matrices, fast electron transfer, and easy molecular diffusion, are present in the highly active electrode for biosensing applications. The designed electrode based on the NMCS shows high sensitivity and selectivity for DA sensing even in the presence of physiological interference molecules, such as ascorbic acid and/or uric acid, at a low applied potential of 0.25 V versus Ag/AgCl. The large-scale NMCS-based electrode shows low detection limits as low as 10 nmol L-1 , wide linear range up to 0.5 mmol L-1 , long-term stability for more than 15 d (relative standard deviation (RSD)= 5.8%), and a low cytotoxicity with high biocompatibility. The findings demonstrated that the NMCS-based electrode is a reliable modified electrode for ultratrace sensitivity of DA, which is secreted normally from dopaminergic cells (PC12) or under a stimulating agent (K+ ).
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Affiliation(s)
- Mohammed Y. Emran
- National Institute for Materials Science (NIMS); 1-2-1 Sengen Tsukuba-shi Ibaraki-ken 305-0047 Japan
| | - Mohamed A. Shenashen
- National Institute for Materials Science (NIMS); 1-2-1 Sengen Tsukuba-shi Ibaraki-ken 305-0047 Japan
| | - Hiromi Morita
- Nanotechnology Innovation Station; NIMS, 1-2-1 Sengen Tsukuba 305-0047 Japan
| | - Sherif A. El-Safty
- National Institute for Materials Science (NIMS); 1-2-1 Sengen Tsukuba-shi Ibaraki-ken 305-0047 Japan
- Faculty of Engineering and Advanced Manufacturing; University of Sunderland; Sunderland SR6 0DD UK
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18
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Emran MY, Shenashen MA, Morita H, El-Safty SA. One-step selective screening of bioactive molecules in living cells using sulfur-doped microporous carbon. Biosens Bioelectron 2018; 109:237-245. [DOI: 10.1016/j.bios.2018.03.026] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/12/2018] [Accepted: 03/12/2018] [Indexed: 12/22/2022]
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19
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El-Sewify IM, Shenashen MA, Shahat A, Selim MM, Khalil MM, El-Safty SA. Sensitive and selective fluorometric determination and monitoring of Zn2+ ions using supermicroporous Zr-MOFs chemosensors. Microchem J 2018. [DOI: 10.1016/j.microc.2018.02.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Emran MY, Shenashen MA, Abdelwahab AA, Abdelmottaleb M, Khairy M, El-Safty SA. Nanohexagonal Fe2O3 Electrode for One-Step Selective Monitoring of Dopamine and Uric Acid in Biological Samples. Electrocatalysis (N Y) 2018. [DOI: 10.1007/s12678-018-0468-0] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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21
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Emran MY, Shenashen MA, Abdelwahab AA, Khalifa H, Mekawy M, Akhtar N, Abdelmottaleb M, El-Safty SA. Design of hierarchical electrocatalytic mediator for one step, selective screening of biomolecules in biological fluid samples. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1175-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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22
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Anisotropic N-Graphene-diffused Co 3O 4 nanocrystals with dense upper-zone top-on-plane exposure facets as effective ORR electrocatalysts. Sci Rep 2018; 8:3740. [PMID: 29487302 PMCID: PMC5829235 DOI: 10.1038/s41598-018-21878-w] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 02/07/2018] [Indexed: 01/19/2023] Open
Abstract
We provide strong evidence of the effectiveness of homogenously self-propelled particle-in-particle diffusion, interaction and growth protocol. This technique was used for one-pot synthesis of novel nitrogen-graphene oxide (N-GO)/Co3O4 nanocrystals with cuboid rectangular prism-shaped nanorods (NRs) along {110}-plane and truncated polyhedrons with densely-exposed, multi-facet sites along {311} and {111} planes. These hierarchal nanocrystals create electrode catalyst patterns with vast-range accessibility to active Co2+ sites, a vascular system for the transport and retention of captured O2 molecule interiorly, and low adsorption energy and dense electron configuration surfaces during the oxygen reduction reaction (ORR). The superior electrocatalytic ORR activity of the N-GO/Co3O4 polyhedron nanocrystals in terms of electrochemical selectivity, durability and stability compared with NRs or commercial Pt/C catalysts confirms the synergetic contribution of multi-functional, dense-exposed, and actively topographic facets of polyhedrons to significantly activate the catalytic nature of the catalyst. Our findings show real evidence, for the first time that not only the large number of catalytically active Co2+ cations at the top surface layer but also the dense location of active Co2+ sites on the upper-zone top-on-plane exposure, and the electron density configuration and distribution around the Co2+ sites were important for effective ORR.
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23
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Crystal-Plane-Dependent Activity of Spinel Co3
O4
Towards Water Splitting and the Oxygen Reduction Reaction. ChemElectroChem 2018. [DOI: 10.1002/celc.201701302] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Guo F, Li Y, Fan B, Liu Y, Lu L, Lei Y. Carbon- and Binder-Free Core-Shell Nanowire Arrays for Efficient Ethanol Electro-Oxidation in Alkaline Medium. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4705-4714. [PMID: 29333855 DOI: 10.1021/acsami.7b16615] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
To achieve high electrochemical surface area (ECSA) and avoid carbon support and binder in the anode catalyst of direct ethanol fuel cell, herein, we design freestanding core-shell nickel@palladium-nickel nanowire arrays (Ni@Pd-Ni NAs) without carbon support and binder for high-efficiency ethanol electro-oxidation. Bare Ni nanowire arrays (Ni NAs) are first prepared using the facile template-assistant electrodeposition method. Subsequently, the Ni@Pd-Ni NAs are formed using one-step solution-based alloying reaction. The optimized Ni@Pd-Ni NA electrode with a high ECSA of 64.4 m2 g-1Pd exhibits excellent electrochemical performance (peak current density: 622 A g-1Pd) and cycling stability for ethanol electro-oxidation. The facilely obtained yet high-efficiency core-shell Ni@Pd-Ni NA electrode is a promising electrocatalyst, which can be utilized for oxygen reduction reaction, urea, hydrazine hydrate, and hydrogen peroxide electro-oxidation, not limited to the ethanol electro-oxidation.
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Affiliation(s)
- Fen Guo
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology , Wuhan 430081, P. R. China
| | - Yiju Li
- Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University , Harbin 150001, P. R. China
- Department of Materials Science and Engineering, University of Maryland at College Park , College Park, Maryland 20742, United States
| | - Baoan Fan
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology , Wuhan 430081, P. R. China
| | - Yi Liu
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology , Wuhan 430081, P. R. China
| | - Lilin Lu
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology , Wuhan 430081, P. R. China
| | - Yang Lei
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology , Wuhan 430081, P. R. China
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Emran MY, Shenashen MA, Abdelwahab AA, Abdelmottaleb M, El-Safty SA. Facile synthesis of microporous sulfur-doped carbon spheres as electrodes for ultrasensitive detection of ascorbic acid in food and pharmaceutical products. NEW J CHEM 2018; 42:5037-5044. [DOI: 10.1039/c7nj05047j] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
The active interfacial surface of S-doped microporous carbon spheres strongly binds with ascorbic acid in food and pharmaceutical products.
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Affiliation(s)
- Mohammed Y. Emran
- National Institute for Materials Science (NIMS)
- Tsukuba-shi
- Japan
- Department of Chemistry
- Faculty of Science
| | | | - Adel A. Abdelwahab
- Department of Chemistry
- Faculty of Science
- Al-Azhar University
- Assiut 71524
- Egypt
| | | | - Sherif A. El-Safty
- National Institute for Materials Science (NIMS)
- Tsukuba-shi
- Japan
- Faculty of Engineering and Advanced Manufacturing
- University of Sunderland
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26
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Li P, Chen X, He H, Zhou X, Zhou Y, Zou Z. Polyhedral 30-Faceted BiVO 4 Microcrystals Predominantly Enclosed by High-Index Planes Promoting Photocatalytic Water-Splitting Activity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1703119. [PMID: 29178291 DOI: 10.1002/adma.201703119] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 09/29/2017] [Indexed: 06/07/2023]
Abstract
Unprecedented 30-faceted BiVO4 polyhedra predominantly surrounded by {132}, {321}, and {121} high-index facets are fabricated through the engineering of high-index surfaces by a trace amount of Au nanoparticles. The growth of high-index facets results in a 3-5 fold enhancement of O2 evolution from photocatalytic water splitting by the BiVO4 polyhedron, relative to its low-index counterparts. Theory calculations reveal that water dissociation is more energetically favorable on the high-index surfaces than on the low-index (010), (110), and (101) surfaces, which is accompanied by a notable reduction in the overpotential (0.77-1.14 V) for the oxygen evolution reaction. The apparent quantum efficiency of O2 generation without an external electron supply reaches 18.3% under 430 nm light irradiation, which is an order of magnitude higher than that of the catalysts reported hitherto.
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Affiliation(s)
- Ping Li
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, School of Physics, Nanjing University, Nanjing, Jiangsu, 210093, P. R. China
- Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing, Jiangsu, 211816, P. R. China
- Ecomaterials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, Jiangsu, 210093, P. R. China
| | - Xingyu Chen
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, School of Physics, Nanjing University, Nanjing, Jiangsu, 210093, P. R. China
- Ecomaterials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, Jiangsu, 210093, P. R. China
| | - Huichao He
- State Key Laboratory of Environmental Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, P. R. China
| | - Xin Zhou
- College of Environment and Chemical Engineering, Dalian University, Dalian, Liaoning, 116622, P. R. China
| | - Yong Zhou
- Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, School of Physics, Nanjing University, Nanjing, Jiangsu, 210093, P. R. China
- Ecomaterials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, Jiangsu, 210093, P. R. China
| | - Zhigang Zou
- Ecomaterials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, Jiangsu, 210093, P. R. China
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Zhang P, Tachikawa T, Fujitsuka M, Majima T. The Development of Functional Mesocrystals for Energy Harvesting, Storage, and Conversion. Chemistry 2017; 24:6295-6307. [DOI: 10.1002/chem.201704680] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Peng Zhang
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Takashi Tachikawa
- Molecular Photoscience Research Center; Kobe University; 1-1 Rokkodai-cho Nada-ku Kobe 657-8501 Japan
- PRESTO, Science and Technology Agency (JST); 24-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Tetsuro Majima
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
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28
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Pd supported on carbon containing nickel, nitrogen and sulfur for ethanol electrooxidation. Sci Rep 2017; 7:15479. [PMID: 29133796 PMCID: PMC5684197 DOI: 10.1038/s41598-017-15060-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 10/06/2017] [Indexed: 11/12/2022] Open
Abstract
Carbon material containing nickel, nitrogen and sulfur (Ni-NSC) has been synthesized using metal-organic frameworks (MOFs) as precursor by annealing treatment with a size from 200 to 300 nm. Pd nanoparticles supported on the Ni-NSC (Pd/Ni-NSC) are used as electrocatalysts for ethanol oxidation in alkaline media. Due to the synergistic effect between Pd and Ni, S, N, free OH radicals can form on the surface of Ni, N and S atoms at lower potentials, which react with CH3CO intermediate species on the Pd surface to produce CH3COO− and release the active sites. On the other hand, the stronger binding force between Pd and co-doped N and S is responsible for enhancing dispersion and preventing agglomeration of the Pd nanoparticles. The Pd(20 wt%)/Ni-NSC shows better electrochemical performance of ethanol oxidation than the traditional commercial Pd(20 wt%)/C catalyst. Onset potential on the Pd(20 wt%)/Ni-NSC electrode is 36 mV more negative compared with that on the commercial Pd(20 wt%)/C electrode. The Pd(20 wt%)/Ni-NSC in this paper demonstrates to have excellent electrocatalytic properties and is considered as a promising catalyst in alkaline direct ethanol fuel cells.
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29
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Emran MY, Mekawy M, Akhtar N, Shenashen MA, El-Sewify IM, Faheem A, El-Safty SA. Broccoli-shaped biosensor hierarchy for electrochemical screening of noradrenaline in living cells. Biosens Bioelectron 2017; 100:122-131. [PMID: 28886456 DOI: 10.1016/j.bios.2017.08.050] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/21/2017] [Accepted: 08/22/2017] [Indexed: 01/26/2023]
Abstract
Monitoring and determination of ultra-trace concentrations of monoamine neurotransmitter such as noradrenaline (NA) in living cells with simple, sensitive and selective assays are significantly interesting. We design NA-electrode sensing system based on C-, N-doped NiO broccoli-like hierarchy (CNNB). The spherical broccoli-head umbrella architectures associated with nano-tubular arrangements enabled to tailor NA biosensor design. The homogenous doping and anisotropic dispersion of CN nanospheres along the entire NB head nanotubes lead to creating of abundant electroactive sites in the interior tubular vessels and outer surfaces for ultrasensitive detection of NA in living cells such as PC12. The CNNB biosensor electrodes showed efficient electrocatalytic activity, enhanced kinetics for electrooxidation of NA, and fast electron-transfer between electrode-electrolyte interface surfaces, enabling synergistic enhancement in sensitivity, and selectivity at a low-detectable concentration of ∼ 6nM and reproducibility of broccoli-shaped NA-electrodes. The integrated CNNB biosensor electrodes showed evidence of monitoring and screening of NA released from PC12 cells under K+ ion-extracellular stimulation process. The unique features of CNNB in terms of NA-selectivity among multi-competitive components, long-term stability during the detection of NA may open their practical, in-vitro application for extracellular monoamine neurotransmitters detection in living cells.
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Affiliation(s)
- Mohammed Y Emran
- National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan
| | - Moataz Mekawy
- National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan
| | - Naeem Akhtar
- National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan
| | - Mohamed A Shenashen
- National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan
| | - Islam M El-Sewify
- National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan
| | - Ahmed Faheem
- School of Pharmacy and Pharmaceutical Sciences, Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland SR1 3SD, UK
| | - Sherif A El-Safty
- National Institute for Materials Science (NIMS), Research Center for Functional Materials, 1-2-1 Sengen, Tsukuba-shi, Ibaraki-ken 305-0047, Japan.
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30
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Akhtar N, Emran MY, Shenashen MA, Khalifa H, Osaka T, Faheem A, Homma T, Kawarada H, El-Safty SA. Fabrication of photo-electrochemical biosensors for ultrasensitive screening of mono-bioactive molecules: the effect of geometrical structures and crystal surfaces. J Mater Chem B 2017; 5:7985-7996. [DOI: 10.1039/c7tb01803g] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The controlled design of hierarchical CN-ST flowers is a key feature for creating biosensor surface electrodes for photo-electrochemical, ultrasensitive screening of mono-bioactive molecules.
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Affiliation(s)
- Naeem Akhtar
- National Institute for Materials Science (NIMS)
- Research Center for Functional Materials
- Tsukuba-shi
- Japan
- Graduate School for Science and Engineering
| | - Mohammed Y. Emran
- National Institute for Materials Science (NIMS)
- Research Center for Functional Materials
- Tsukuba-shi
- Japan
| | - Mohamed A. Shenashen
- National Institute for Materials Science (NIMS)
- Research Center for Functional Materials
- Tsukuba-shi
- Japan
| | - Hesham Khalifa
- National Institute for Materials Science (NIMS)
- Research Center for Functional Materials
- Tsukuba-shi
- Japan
| | - Tetsuya Osaka
- Graduate School for Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Ahmed Faheem
- School of Pharmacy and Pharmaceutical Sciences
- Faculty of Health Sciences and Wellbeing
- University of Sunderland
- Sunderland
- UK
| | - Takayuki Homma
- Graduate School for Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Hiroshi Kawarada
- Graduate School for Science and Engineering
- Waseda University
- Tokyo 169-8555
- Japan
| | - Sherif A. El-Safty
- National Institute for Materials Science (NIMS)
- Research Center for Functional Materials
- Tsukuba-shi
- Japan
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Selim MS, Shenashen MA, Elmarakbi A, EL-Saeed A, Selim MM, El-Safty SA. Sunflower oil-based hyperbranched alkyd/spherical ZnO nanocomposite modeling for mechanical and anticorrosive applications. RSC Adv 2017. [DOI: 10.1039/c7ra01343d] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Approaches for designing advanced nanomaterials with hyperbranched architectures and lack of volatile organic content (VOC) have attracted considerable attention.
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Affiliation(s)
- Mohamed S. Selim
- National Institute for Materials Science (NIMS)
- Tsukuba-shi
- Japan
- Petroleum Application Department
- Egyptian Petroleum Research Institute
| | - Mohamed A. Shenashen
- National Institute for Materials Science (NIMS)
- Tsukuba-shi
- Japan
- Petroleum Application Department
- Egyptian Petroleum Research Institute
| | - Ahmed Elmarakbi
- Automotive Composites Group
- Faculty of Engineering and Advanced and Manufacturing
- University of Sunderland
- Sunderland SR6 0DD
- UK
| | - Ashraf M. EL-Saeed
- Petroleum Application Department
- Egyptian Petroleum Research Institute
- Cairo
- Egypt
| | - Mahmoud M. Selim
- Department of Mathematics
- Al-Aflaj College of Science and Human Studies
- Prince Sattam Bin Abdulaziz University
- Al-Aflaj 710-11912
- Saudi Arabia
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Carbon Supported Engineering NiCo₂O₄ Hybrid Nanofibers with Enhanced Electrocatalytic Activity for Oxygen Reduction Reaction. MATERIALS 2016; 9:ma9090759. [PMID: 28773878 PMCID: PMC5457091 DOI: 10.3390/ma9090759] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 08/26/2016] [Accepted: 08/30/2016] [Indexed: 12/22/2022]
Abstract
The design of cheap and efficient oxygen reduction reaction (ORR) electrocatalysts is of a significant importance in sustainable and renewable energy technologies. Therefore, ORR catalysts with superb electrocatalytic activity and durability are becoming a necessity but still remain challenging. Herein, we report C/NiCo2O4 nanocomposite fibers fabricated by a straightforward electrospinning technique followed by a simple sintering process as a promising ORR electrocatalyst in alkaline condition. The mixed-valence oxide can offer numerous accessible active sites. In addition, the as-obtained C/NiCo2O4 hybrid reveals significantly remarkable electrocatalytic performance with a highly positive onset potential of 0.65 V, which is only 50 mV lower than that of commercially available Pt/C catalysts. The analyses indicate that C/NiCo2O4 catalyst can catalyze O2-molecules via direct four electron pathway in a similar behavior as commercial Pt/C catalysts dose. Compared to single NiCo2O4 and carbon free NiCo2O4, the C/NiCo2O4 hybrid displays higher ORR current and more positive half-wave potential. The incorporated carbon matrices are beneficial for fast electron transfer and can significantly impose an outstanding contribution to the electrocatalytic activity. Results indicate that the synthetic strategy hold a potential as efficient route to fabricate highly active nanostructures for practical use in energy technologies.
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