201
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Abbasian AR, Rahmani M. Salt-assisted solution combustion synthesis of nanostructured ZnFe2O4-ZnS powders. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2019.107629] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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202
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Tamirat AG, Guan X, Liu J, Luo J, Xia Y. Redox mediators as charge agents for changing electrochemical reactions. Chem Soc Rev 2020; 49:7454-7478. [DOI: 10.1039/d0cs00489h] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
This review provides a comprehensive discussion toward understanding the effects of RMs in electrochemical systems, underlying redox mechanisms, and reaction kinetics both experimentally and theoretically.
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Affiliation(s)
- Andebet Gedamu Tamirat
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Institute of New Energy
- Fudan University
- Shanghai 200433
- People's Republic of China
| | - Xuze Guan
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Jingyuan Liu
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Institute of New Energy
- Fudan University
- Shanghai 200433
- People's Republic of China
| | - Jiayan Luo
- School of Chemical Engineering and Technology
- Tianjin University
- Tianjin 300072
- China
| | - Yongyao Xia
- Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Institute of New Energy
- Fudan University
- Shanghai 200433
- People's Republic of China
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203
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Sundaram MM, Appadoo D. Traditional salt-in-water electrolyte vs. water-in-salt electrolyte with binary metal oxide for symmetric supercapacitors: capacitive vs. faradaic. Dalton Trans 2020; 49:11743-11755. [PMID: 32797136 DOI: 10.1039/d0dt01871f] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The electrochemical energy storage of lithium and sodium ions from aqueous solutions in binary metal oxides is of great interest for renewable energy storage applications. Binary metal oxides are of interest for aqueous energy storage due to their better structural stability and electronic conductivity and tunability of redox potentials. They have also been widely studied as novel electrodes for supercapacitors. The interactions between water and lithium/sodium ions, and water and binary metal oxide surface determine the electrochemical reactions and their long-term stability. Our results indicate that the aqueous sodium electrolyte has a stronger influence on the capacitance and cycling stability of the binary (Ca and Mo) metal oxide electrode than its lithium cousin. The symmetric cell in a two-electrode configuration was assembled with the proposed binary metal oxide, which shows an average discharge voltage of 1.2 V, delivering a specific capacitance of 72 F g-1 at a specific energy density of 32 W h kg-1 based on the total mass of the active materials. The development of highly concentrated aqueous electrolytes such as the "water-in-salt" electrolyte showed a larger electrochemical (voltage) window with enhanced storage capacitance for increasing the salt concentrations has also been discussed.
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Affiliation(s)
| | - Dominique Appadoo
- THz-Far Infrared Beamline, ANSTO-Australian Synchrotron, Clayton, Victoria 3168, Australia
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204
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Musembi MK, Dejene FB. Investigation of the effect of precursor ratios on the solution combustion synthesis of zinc zirconate nanocomposite. Heliyon 2019; 5:e03028. [PMID: 31879715 PMCID: PMC6920200 DOI: 10.1016/j.heliyon.2019.e03028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 11/29/2019] [Accepted: 12/09/2019] [Indexed: 12/02/2022] Open
Abstract
Zinc zirconate nanocomposite was synthesized by a low-temperature solution combustion method using citric acid as fuel at a pH of 7. The synthesis was done by varying the ratios of zirconium butoxide and zinc nitrate, which were the precursors in this study. The samples were calcined at 600 °C for 2 h then their structural and optical characteristics investigated. The analysis showed that the nanocomposite consisted of mixed phases of zinc zirconate, zinc oxide, and zirconium oxide. As the Zn2+/Zr4+ ratio increased, the highly agglomerated morphologies gradually developed crystalline aggregates mixed with nanorods. A red-shifted blue emission with a peak at 409 nm was observed in the photoluminescence spectra and the composites had an energy bandgap between 2.81 and 3.12 eV.
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Affiliation(s)
- M K Musembi
- Department of Physics, University of the Free State (Qwa Qwa Campus), Private Bag, X13, Phuthaditjhaba, 9866, South Africa
| | - F B Dejene
- Department of Physics, University of the Free State (Qwa Qwa Campus), Private Bag, X13, Phuthaditjhaba, 9866, South Africa
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205
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Limitations and Prospects for Wastewater Treatment by UV and Visible-Light-Active Heterogeneous Photocatalysis: A Critical Review. Top Curr Chem (Cham) 2019; 378:7. [DOI: 10.1007/s41061-019-0272-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 11/26/2019] [Indexed: 11/26/2022]
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206
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Hezam A, Namratha K, Ponnamma D, Drmosh QA, Saeed AMN, Sadasivuni KK, Byrappa K. Sunlight-Driven Combustion Synthesis of Defective Metal Oxide Nanostructures with Enhanced Photocatalytic Activity. ACS OMEGA 2019; 4:20595-20605. [PMID: 31858045 PMCID: PMC6906766 DOI: 10.1021/acsomega.9b02564] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 11/04/2019] [Indexed: 05/31/2023]
Abstract
Synthesis of metal oxide nanostructures through combustion routes is a promising technique owing to its simplicity, rapidity, scalability, and cost-effectiveness. Herein, a sunlight-driven combustion approach is developed to synthesize pristine metal oxides and their heterostructures. Sunlight, a sustainable energy source, is used not only to initiate the combustion reaction but also to create oxygen vacancies on the metal oxide surface. ZnO nanostructures are successfully synthesized using this novel approach, and the products exhibit higher photocatalytic activity in the decomposition of methyl orange (MO) than ZnO nanostructures synthesized by the conventional methods. The higher photocatalytic activity is due to the narrower band gap, higher porosity, smaller and more uniform particle size, surface oxygen vacancies, as well as the enhanced exciton dissociation efficiency induced by the sunlight. Porous Fe3O4 nanostructures are also prepared using this environmentally benign method. Surprisingly, few-layer Bi2O3 nanosheets are successfully obtained using the sunlight-driven combustion approach. Moreover, the approach developed here is used to synthesize Bi2O3/ZnO heterostructure exhibiting a structure of few-layer Bi2O3 nanosheets decorated with ZnO nanoparticles. Bi2O3 nanosheets and Bi2O3/ZnO heterostructures synthesized by sunlight-driven combustion route exhibit higher photocatalytic activity than their counterparts synthesized by the conventional solution combustion method. This work illuminates a potential cost-effective method to synthesize defective metal oxide nanostructures at scale.
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Affiliation(s)
- Abdo Hezam
- Center
for Materials Science and Technology, University
of Mysore, Vijnana Bhavan, Manasagangothiri, Mysuru 570006, India
| | - K. Namratha
- DOS
in Earth Science, University of Mysore, Manasagangothiri, Mysuru 570006, India
| | | | - Q. A. Drmosh
- Center
of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Adel Morshed Nagi Saeed
- Department
of Polymer Science and Technology, Sri Jayachamarajendra College of
Engineering, JSS Science & Technology
University, Mysuru 570006, India
| | | | - Kullaiah Byrappa
- Adichunchanagiri
University, N.H. 75,
B. G. Nagara, Mandya, 571448, India
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207
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Bhuvaneswari S, Varadaraju U, Gopalan R, Prakash R. Sc-doping induced cation-disorder in LiNi0.5Mn1.5O4 spinel leading to improved electrochemical performance as cathode in lithium ion batteries. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.135008] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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208
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Effects of Precursor Concentration in Solvent and Nanomaterials Room Temperature Aging on the Growth Morphology and Surface Characteristics of Ni–NiO Nanocatalysts Produced by Dendrites Combustion during SCS. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9224925] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The morphology and surface characteristics of SCS(Solution Combustion Synthesis)-derived Ni–NiO nanocatalysts were studied. The ΤΕΜ results highlighted that the nanomaterial’s microstructure was modified by changing the reactants’ concentrations. The dendrites’ growth conditions were the main factors responsible for the observed changes in the nanomaterials’ crystallite size. Infrared camera measurements demonstrated a new type of combustion through dendrites. The XPS analysis revealed that the NiO structure resulted in the bridging of the oxygen structure that acted as an inhibitor of hydrogen adsorption on the catalytic surface and, consequently, the activity reduction. The RF-IGC indicated three different kinds of active sites with different energies of adsorption on the fresh catalyst and only one type on the aged catalyst. Aging of the nanomaterial was associated with changes in the microstructure of its surface by a gradual change in the chemical composition of the active centers.
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209
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Kontonasaki E, Giasimakopoulos P, Rigos AE. Strength and aging resistance of monolithic zirconia: an update to current knowledge. JAPANESE DENTAL SCIENCE REVIEW 2019; 56:1-23. [PMID: 31768195 PMCID: PMC6872834 DOI: 10.1016/j.jdsr.2019.09.002] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/02/2019] [Accepted: 09/17/2019] [Indexed: 01/01/2023] Open
Abstract
New zirconia compositions with optimized esthetic properties have emerged due to the fast-growing technology in zirconia manufacturing. However, the large variety of commercial products and synthesis routes, make impossible to include all of them under the general term of “monolithic zirconia ceramics”. Ultra- or high translucent monolithic formulations contain 3–8 mol% yttria, which results in materials with completely different structure, optical and mechanical properties. The purpose of this study was to provide an update to the current knowledge concerning monolithic zirconia and to review factors related to strength and aging resistance. Factors such as composition, coloring procedures, sintering method and temperature, may affect both strength and aging resistance to a more or less extend. A significant reduction of mechanical properties has been correlated to high translucent zirconia formualtions while regarding aging resistance, the findings are contradictory, necessitating more and thorough investigation. Despite the obvious advantages of contemporary monolithic zirconia ceramics, further scientific evidence is required that will eventually lead to the appropriate laboratory and clinical guidelines for their use. Until then, a safe suggestion should be to utilize high-strength partially-stabilized zirconia for posterior or long span restorations and fully-stabilized ultra-translucent zirconia for anterior single crowns and short span fixed partial dentures.
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Affiliation(s)
- Eleana Kontonasaki
- Department of Prosthodontics, Faculty of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, Greece
- Corresponding author at: Laboratory of Prosthodontics, Department of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece.
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210
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Sharma L, Gond R, Senthilkumar B, Roy A, Barpanda P. Fluorophosphates as Efficient Bifunctional Electrocatalysts for Metal–Air Batteries. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03686] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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211
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Nie Y, Zhang H, Zhang J, Wang L, Zhong S, Wu Y, Duan J, Shi H, Victor KK, Zhang G, Duan H. Phosphorization‐Induced Void‐Containing Fe
3
O
4
Nanoparticles Enabling Low Lithiation/Delithiation Potential for High‐Performance Lithium‐Ion Batteries. ChemElectroChem 2019. [DOI: 10.1002/celc.201901340] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yan Nie
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University Changsha 410082 P. R. China
| | - Hang Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education, School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an 710119 P. R. China
| | - Jinfeng Zhang
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University Changsha 410082 P. R. China
| | - Lei Wang
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University Changsha 410082 P. R. China
| | - Siyu Zhong
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University Changsha 410082 P. R. China
| | - Yinglong Wu
- School of Materials Science and EngineeringChangsha University of Science and Technology Changsha 410004 P. R. China
| | - Junfei Duan
- School of Materials Science and EngineeringChangsha University of Science and Technology Changsha 410004 P. R. China
| | - Huimin Shi
- Center for Research on Leading Technology of Special Equipment, School of Mechanical and Electric EngineeringGuangzhou University Guangzhou 510006 P. R. China
| | - Kipkoech Kirui Victor
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University Changsha 410082 P. R. China
| | - Guanhua Zhang
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University Changsha 410082 P. R. China
| | - Huigao Duan
- State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan University Changsha 410082 P. R. China
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212
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Facile synthesis and ferrimagnetic property of spinel (CoCrFeMnNi)3O4 high-entropy oxide nanocrystalline powder. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.05.073] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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213
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Thoda O, Xanthopoulou G, Vekinis G, Chroneos A. Influence of Various Parameters on the SCS Ni/NiO Nanostructures and their Mechanism of Formation. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2019. [DOI: 10.18321/ectj862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Solution combustion synthesis (SCS) is an efficient approach to deliver materials with desirable properties directly in the nanoscale. Nevertheless, it is a very sensitive method and there are many parameters that influence the final materials’ properties and microstructure. In this work, four parameters that severely affect the combustion mechanism of formation for the final products, and as a result their final properties, are studied. These are the concentration of nitrates, the concentration of fuel in direct and slow heating and the time in furnace after the SCS is completed. It has been concluded that all these parameters affect the SCS process in a complicated way and an attempt has been made to explain the underlying mechanisms and processes that shape the final nanostructures. Finally, some of the as-synthesized Ni/NiO nanopowders were employed as catalysts and their activity was tested in the liquid-phase hydrogenation of maleic acid.
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214
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Senthilkumar B, Irshad A, Barpanda P. Cobalt and Nickel Phosphates as Multifunctional Air-Cathodes for Rechargeable Hybrid Sodium-Air Battery Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33811-33818. [PMID: 31429545 DOI: 10.1021/acsami.9b09090] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Noble-metal-free bifunctional electrocatalysts are indispensable to realize low-cost and energy-efficient rechargeable metal-air batteries. In addition, power density, energy density, and cycle life of these metal-air batteries can be improved further by utilizing the fast faradaic reactions of metal ions in the catalyst layer together with the oxygen evolution/reduction reactions (OER/ORR) for charge storage. In this work, we propose mixed metal phosphates of nickel and cobalt, NixCo3-x(PO4)2 (x = 0,1, 1.5, 2, and 3), as multifunctional air-cathodes exhibiting bifunctional electrocatalytic activity and reversible metal redox reaction (M3+/2+, M = Ni and Co). Submicron-sized NixCo3-x(PO4)2 particles were synthesized by a solution combustion synthesis technique with urea acting as the fuel. Electrocatalytic activity toward the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) in 0.1 M NaOH was systematically tuned by varying the Ni-to-Co ratio. The synthesized NixCo3-x(PO4)2 with x = 1.5 (NCP11) showed superior bifunctional catalytic activity to other samples. Moreover, the catalyst material delivered a specific capacity of ∼110 mAh g-1 by the redox reactions of its metal sites. The hybrid Na-air battery fabricated using the NCP11 catalyst-loaded air-cathode exhibited low overpotential, stable cycling performance, and round-trip energy efficiency exceeding 78% in a 0.1 M NaOH aqueous electrolyte.
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Affiliation(s)
- Baskar Senthilkumar
- Laboratoire de Réactivité et Chimie des Solides (LRCS), CNRS UMR 7314 , Université de Picardie Jules Verne , 33 Rue Saint Leu , 80039 Amiens Cedex , France
| | - Ahamed Irshad
- Loker Hydrocarbon Research Institute, Department of Chemistry , University of Southern California , Los Angeles , California 90089 , United States
| | - Prabeer Barpanda
- Faraday Materials Laboratory, Materials Research Centre , Indian Institute of Science , C.V. Raman Avenue , Bangalore 560012 , India
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215
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Assirey EAR. Perovskite synthesis, properties and their related biochemical and industrial application. Saudi Pharm J 2019; 27:817-829. [PMID: 31516324 PMCID: PMC6733782 DOI: 10.1016/j.jsps.2019.05.003] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 05/13/2019] [Indexed: 11/30/2022] Open
Abstract
The perovskite structure is shown to be the single most versatile ceramic host. Inorganic perovskite type oxides are attractive compounds for varied applications due to its large number of compounds, they exhibit both physical and biochemical characteristics and their Nano-formulation have been utilized as catalysts in many reaction due to their sensitivity, unique long-term stability and anti-interference ability. Some perovskites materials are very hopeful applicants for the improvement of effective anodic catalysts performance. Depending Perovskite-phase metal oxides distinct variety of properties they became useful for various applications they are newly used in electrochemical sensing of alcohols, glucose, hydrogen peroxide, gases, and neurotransmitters. Perovskite organometallic halide showed efficient essential properties for photovoltaic solar cells. This review presents a full coverage of the structure, progress of perovskites and their related applications. Stress is focused particularly to different methods of perovskites properties and there related application.
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216
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Schulz C, Roy S, Wittich K, d’Alnoncourt RN, Linke S, Strempel V, Frank B, Glaum R, Rosowski F. αII-(V1-W )OPO4 catalysts for the selective oxidation of n-butane to maleic anhydride. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.05.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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217
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Yee DW, Lifson ML, Edwards BW, Greer JR. Additive Manufacturing of 3D-Architected Multifunctional Metal Oxides. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901345. [PMID: 31231919 PMCID: PMC8063598 DOI: 10.1002/adma.201901345] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 06/07/2019] [Indexed: 06/01/2023]
Abstract
Additive manufacturing (AM) of complex three-dimensional (3D) metal oxides at the micro- and nanoscales has attracted considerable attention in recent years. State-of-the-art techniques that use slurry-based or organic-inorganic photoresins are often hampered by challenges in resin preparation and synthesis, and/or by the limited resolution of patterned features. A facile process for fabricating 3D-architected metal oxides via the use of an aqueous metal-ion-containing photoresin is presented. The efficacy of this process, which is termed photopolymer complex synthesis, is demonstrated by creating nanoarchitected zinc oxide (ZnO) architectures with feature sizes of 250 nm, by first patterning a zinc-ion-containing aqueous photoresin using two-photon lithography and subsequently calcining them at 500 ºC. Transmission electron microscopy (TEM) analysis reveals their microstructure to be nanocrystalline ZnO with grain sizes of 5.1 ± 1.6 nm. In situ compression experiments conducted in a scanning electron microscope show an emergent electromechanical response: a 200 nm mechanical compression of an architected ZnO structure results in a voltage drop of 0.52 mV. This photopolymer complex synthesis provides a pathway to easily create arbitrarily shaped 3D metal oxides that could enable previously impossible devices and smart materials.
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Affiliation(s)
| | | | - Bryce W. Edwards
- Division of Engineering and Applied Science, California Institute of Technology, CA 91125, USA
| | - Julia R. Greer
- Division of Engineering and Applied Science, California Institute of Technology, CA 91125, USA
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218
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Huminic A, Huminic G, Fleacă C, Dumitrache F, Morjan I. Thermo-physical properties of water based lanthanum oxide nanofluid. An experimental study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111013] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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219
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Vivekanandhan S. Combustion Process Using Plant‐Based Fuels for the Synthesis of Metal‐ Oxide Nanostructures. ChemistrySelect 2019. [DOI: 10.1002/slct.201900103] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Singaravelu Vivekanandhan
- Sustainable Materials and Nanotechnology LabDepartment of PhysicsV.H.N.S.N. College (Autonomous) Virudhunagar- 626 001, Tamilnadu India
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220
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Zhang D, Liu H, Su C, Li H, Geng Y. Combustion synthesis of highly efficient Bi/BiOBr visible light photocatalyst with synergetic effects of oxygen vacancies and surface plasma resonance. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.02.037] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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221
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Mukherjee A, Adak MK, Upadhyay S, Khatun J, Dhak P, Khawas S, Ghorai UK, Dhak D. Efficient Fluoride Removal and Dye Degradation of Contaminated Water Using Fe/Al/Ti Oxide Nanocomposite. ACS OMEGA 2019; 4:9686-9696. [PMID: 31460059 PMCID: PMC6649016 DOI: 10.1021/acsomega.9b00252] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/27/2019] [Indexed: 06/10/2023]
Abstract
The trimetallic Fe/Al/Ti (1:1:1) nanocomposite (FAT), synthesized by an adaptable tuned chemical route, offers a new approach for water treatment, for example, the de-fluoridation and photodegradation soluble dye methylene blue (MB) at pH 7. FAT acted as a good fluoride scavenger in the presence of other co-ions and within a widespread pH range (pH 2-11). The photodegradation efficiencies were >90% for different concentrations of MB solutions. The characterization of FAT includes thermogravimetric analysis, X-ray diffraction, Fourier transform-infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and ζ-potential analysis. Furthermore, the regeneration efficiencies of both the water treatments were checked, where the removal efficiency was not hampered significantly even after five batches. Spectroscopic techniques were adopted to perform the kinetic studies and to propose the probable mechanistic paths.
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Affiliation(s)
- Arnab Mukherjee
- Nanomaterials
Research Lab, Department of Chemistry, Sidho-Kanho-Birsha
University, Purulia 723104, India
| | - Mrinal K. Adak
- Nanomaterials
Research Lab, Department of Chemistry, Sidho-Kanho-Birsha
University, Purulia 723104, India
| | - Sudipta Upadhyay
- Nanomaterials
Research Lab, Department of Chemistry, Sidho-Kanho-Birsha
University, Purulia 723104, India
| | - Julekha Khatun
- Nanomaterials
Research Lab, Department of Chemistry, Sidho-Kanho-Birsha
University, Purulia 723104, India
| | - Prasanta Dhak
- Department
of Chemistry, Techno India University, Kolkata 700091, India
| | - Sadhana Khawas
- Nanomaterials
Research Lab, Department of Chemistry, Sidho-Kanho-Birsha
University, Purulia 723104, India
| | - Uttam Kumar Ghorai
- Department
of Industrial Chemistry, Ramakrishna Mission
Vidyamandira, Belur Math, Howrah 711202, India
| | - Debasis Dhak
- Nanomaterials
Research Lab, Department of Chemistry, Sidho-Kanho-Birsha
University, Purulia 723104, India
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222
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Oxygen Evolution Reaction of Co-Mn-O Electrocatalyst Prepared by Solution Combustion Synthesis. Catalysts 2019. [DOI: 10.3390/catal9060564] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
High-performance oxygen evolution reaction (OER) electrocatalysts are needed to produce hydrogen for energy generation through a carbon-free route. In this work, the solution combustion synthesis (SCS) method was employed to synthesize mixed phases of Co- and Mn-based oxides, and the relationships between the crystalline structure and the catalytic properties in the mixed phases were established. The mixed phases of Co- and Mn-based oxides shows promising OER properties, such as acceptable overpotential (450 mV for 10 mA∙cm−2) and Tafel slope (35.8 mV∙dec−1), highlighting the use of the mixed phases of Co- and Mn-based oxides as a new efficient catalysts for water splitting. Electronic structure of the mixed phases of Co- and Mn based oxides is studied in detail to give insight for the origin of high catalytic activities. In addition, excellent long-term stability for OER in alkaline media is achieved for the mixed phase of Co- and Mn based oxides.
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223
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Effect of Glycine Addition on Physicochemical and Catalytic Properties of Mn, Mn–La and Mn–Ce Monolithic Catalysts Prepared by Solution Combustion Synthesis. Catal Letters 2019. [DOI: 10.1007/s10562-019-02841-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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224
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Sandström R, Ekspong J, Gracia-Espino E, Wågberg T. Oxidatively induced exposure of active surface area during microwave assisted formation of Pt 3Co nanoparticles for oxygen reduction reaction. RSC Adv 2019; 9:17979-17987. [PMID: 35520556 PMCID: PMC9064685 DOI: 10.1039/c9ra02095k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 05/25/2019] [Indexed: 11/21/2022] Open
Abstract
The oxygen reduction reaction (ORR), the rate-limiting reaction in proton exchange membrane fuel cells, can efficiently be facilitated by properly manufactured platinum catalysts alloyed with late 3d transition metals. Herein we synthesize a platinum : cobalt nanoparticulate catalyst with a 3 : 1 atomic ratio by reduction of a dry metalorganic precursor blend within a commercial household microwave oven. The formed nanoparticles are simultaneously anchored to a carbon black support that enables large Pt surface area. Two separate microwave treatment steps were employed, where step one constitutes a fast oxidative treatment for revealing active surface area while a reductive secondary annealing treatment promotes a Pt rich surface. The resulting Pt3Co/C catalyst (∼3.4 nm) demonstrates an enhanced ORR activity directly attributed to incorporated Co with a specific and mass activity of 704 μA cmPt−2 and 352 A gPt−1 corresponding to an increase by 279% and 66% respectively compared to a commercial Pt/C (∼1.8 nm) catalyst measured under identical conditions. The method's simplicity, scalability and novelty is expected to further assist in Pt–Co development and bring the catalyst one step closer toward commercialization and utility in fuel cells. The oxygen reduction reaction (ORR) is efficiently facilitated platinum catalysts alloyed with Co and reveal high electrochemically active surface area via rapid microwave synthesis.![]()
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Affiliation(s)
| | - Joakim Ekspong
- Department of Physics, Umeå University Umeå 90187 Sweden
| | | | - Thomas Wågberg
- Department of Physics, Umeå University Umeå 90187 Sweden
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225
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Wang K, Huang J, Li W, Huang J, Sun D, Ke X, Li Q. Role of Mineral Nutrients in Plant-Mediated Synthesis of Three-Dimensional Porous LaCoO 3. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00951] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kuncan Wang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, National Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Key Lab for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, People’s Republic of China
| | - Junjie Huang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, National Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Key Lab for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, People’s Republic of China
| | - Wen Li
- Department of Ecological Engineering for Environmental Sustainability, College of the Environment & Ecology, Xiamen University, Xiamen 361102, People’s Republic of China
| | - Jiale Huang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, National Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Key Lab for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, People’s Republic of China
| | - Daohua Sun
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, National Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Key Lab for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, People’s Republic of China
| | - Xuebin Ke
- School of Engineering and Computer Science, University of Hull, Hull HU6 7RX, United Kingdom
| | - Qingbiao Li
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, National Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, Key Lab for Chemical Biology of Fujian Province, Xiamen University, Xiamen 361005, People’s Republic of China
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226
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Kumar A. Current Trends in Cellulose Assisted Combustion Synthesis of Catalytically Active Nanoparticles. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b01007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anand Kumar
- Department of Chemical Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
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227
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Mukasyan AS, Roslyakov S, Pauls JM, Gallington LC, Orlova T, Liu X, Dobrowolska M, Furdyna JK, Manukyan KV. Nanoscale Metastable ε-Fe3N Ferromagnetic Materials by Self-Sustained Reactions. Inorg Chem 2019; 58:5583-5592. [DOI: 10.1021/acs.inorgchem.8b03553] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | - Sergey Roslyakov
- National University of Science and Technology, “MISIS”, Moscow 119049, Russia
| | | | - Leighanne C. Gallington
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439-4858, United States
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228
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Manigandan R, Dhanasekaran T, Padmanaban A, Giribabu K, Suresh R, Narayanan V. Bifunctional hexagonal Ni/NiO nanostructures: influence of the core-shell phase on magnetism, electrochemical sensing of serotonin, and catalytic reduction of 4-nitrophenol. NANOSCALE ADVANCES 2019; 1:1531-1540. [PMID: 36132609 PMCID: PMC9417847 DOI: 10.1039/c8na00342d] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 01/30/2019] [Indexed: 06/02/2023]
Abstract
Ni0/NiO (nickel/nickel oxide) core-shell nanostructures were synthesized through a facile combustible redox reaction. Remarkably, the hetero-phase boundary with different crystalline orientations offered dual properties, which helped in bifunctional catalysis. Presence of a metallic Ni phase changed physicochemical properties and some emerging applications (magnetic properties, optical conductivity, electrochemical sensitivity, catalytic behaviour) could be foreseen. Moreover, formation of a NiO layer on metal surface prevented magnetism-induced aggregation, arrested further oxidation by hindering oxygen diffusion, and acted as a good sorbent to enhance the surface adsorption of the analyte. Hexagonal Ni/NiO nanostructures manifested well-defined ferromagnetic behavior and the catalyst could be collected easily at the end of the catalytic reduction. Ni/NiO core-shell catalysts at the nanoscale had outstanding catalytic performance (reduction of 4-nitrophenol to 4-aminophenol) compared with pure NiO catalysts beyond a reaction time of ∼9 min. The estimated sensitivity, limit of detection and limit of quantification towards the electrochemical sensing of serotonin were 0.185, 0.43 and 1.47 μM μA-1, respectively. These results suggest that a bifunctional Ni/NiO nanostructure could be a suitable catalyst for electrochemical detection of serotonin and reduction of 4-nitrophenol.
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Affiliation(s)
- R Manigandan
- Department of Inorganic Chemistry, University of Madras Guindy Campus Chennai India
| | - T Dhanasekaran
- Department of Inorganic Chemistry, University of Madras Guindy Campus Chennai India
| | - A Padmanaban
- Department of Inorganic Chemistry, University of Madras Guindy Campus Chennai India
| | - K Giribabu
- Electrodics and Electrocatalysis Division, CSIR-CECRI Karaikudi India
| | - R Suresh
- Department of Analytical and Inorganic Chemistry, University of Concepcion Chile
| | - V Narayanan
- Department of Inorganic Chemistry, University of Madras Guindy Campus Chennai India
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229
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Catalytic methane reforming into synthesis gas over developed composite materials prepared by combustion synthesis. REACTION KINETICS MECHANISMS AND CATALYSIS 2019. [DOI: 10.1007/s11144-019-01541-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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230
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The Effect of the Precursor Solution’s Pretreatment on the Properties and Microstructure of the SCS Final Nanomaterials. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9061200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Nanostructured nickel-based catalysts were produced by solution combustion synthesis and it was found that their properties and structure depended on the pretreatment of the precursor solution. X-ray diffraction, N2 adsorption, and an infrared high-speed camera were used to follow the various synthesis steps and to characterize the obtained catalysts, while their catalytic activity was determined in the hydrogenation of maleic acid. It was determined that the amount of water used and the heating of the precursor solution under mild stirring up to 70 °C influenced the nickel nitrate–glycine–water complexes that were formed in the precursor solution in the form of dendrites. These play a key role in the solution combustion synthesis (SCS) reaction mechanism and in particular in the formation of nickel-based catalysts. Understanding the interrelationships between the processing parameters and the ensuing powder properties allowed an efficient optimization of the catalytic performance.
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231
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Ali RF, Ovens JS, Starosta K, Gates BD. Novel defect-fluorite pyrochlore sodium niobate nanoparticles: solution-phase synthesis and radiation tolerance analysis. NANOSCALE 2019; 11:5489-5498. [PMID: 30860217 DOI: 10.1039/c8nr10385b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Materials possessing a defect-fluorite pyrochlore structure can have a range of useful properties that are sought after, which include their radiation tolerance, nuclear waste immobilization, and phase stability at elevated temperatures. In this study, we demonstrate for the first time the synthesis and a detailed analysis of defect-fluorite pyrochlore sodium niobate (NaNbO3) nanoparticles. This analysis included an investigation into their stability to elevated temperatures and neutron irradiation. A surfactant-assisted solvothermal method is used to prepare nanoparticles of NaNbO3. This solution-phase approach results in the formation of crystalline nanoparticles of a defect-fluorite pyrochlore NaNbO3 at relatively low temperatures. The products had an average diameter of ∼74 ± 11 nm. The nanoparticles adopted a defect-fluorite pyrochlore phase and matched the cubic Fm3[combining macron]m space group. This pyrochlore form of NaNbO3 was found to be stable up to 500 °C. The nanoparticles transformed into the orthorhombic and rhombohedral perovskite phases of NaNbO3 along with the introduction of a pseudo-hexagonal Nb2O5 at higher temperatures. These defect-fluorite pyrochlore nanoparticles of NaNbO3 also exhibited a resistance to radiation induced amorphization. The dimensions, phase, and crystallinity of the defect-fluorite pyrochlore nanoparticles after exposure to a flux of neutrons were comparable to those of the as-synthesized product. The thermal stability and radiation tolerance of these pyrochlore nanoparticles could be useful in the design of thermally resilient materials, high temperature catalysts, and durable materials for the handling and storage of radioactive waste.
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Affiliation(s)
- Rana Faryad Ali
- Department of Chemistry and 4D LABS, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada.
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232
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Frikha K, Limousy L, Bouaziz J, Chaari K, Josien L, Nouali H, Michelin L, Vidal L, Hajjar-Garreau S, Bennici S. Binary Oxides Prepared by Microwave-Assisted Solution Combustion: Synthesis, Characterization and Catalytic Activity. MATERIALS 2019; 12:ma12060910. [PMID: 30893838 PMCID: PMC6471156 DOI: 10.3390/ma12060910] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 11/16/2022]
Abstract
Three different alumina-based Ni, Cu, Co oxide catalysts with metal loading of 10 wt %, and labeled 10Ni–Al, 10Co–Al and 10Cu–Al, were prepared by microwave-assisted solution combustion. Their morphological, structural and surface properties were deeply investigated by complementary physico-chemical techniques. Finally, the three materials were tested in CO oxidation used as test reaction for comparing their catalytic performance. The 10Cu–Al catalyst was constituted of copper oxide phase, while the 10Ni–Al and 10Co–Al catalysts showed the presence of “spinels” phases on the surface. The well-crystallized copper oxide phase in the 10Cu–Al catalyst, obtained by microwave synthesis, allowed for obtaining very high catalytic activity. With a CO conversion of 100% at 225 °C, the copper containing catalyst showed a much higher activity than that usually measured for catalytic materials of similar composition, thus representing a promising alternative for oxidation processes.
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Affiliation(s)
- Kawthar Frikha
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
- Laboratoire de Chimie Industrielle, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Sfax BP1173, Tunisie.
| | - Lionel Limousy
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Jamel Bouaziz
- Laboratoire de Chimie Industrielle, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Sfax BP1173, Tunisie.
| | - Kamel Chaari
- Laboratoire de Chimie Industrielle, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Sfax BP1173, Tunisie.
| | - Ludovic Josien
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Habiba Nouali
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Laure Michelin
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Loic Vidal
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Samar Hajjar-Garreau
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Simona Bennici
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
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233
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Zedan AF, AlJaber AS. Combustion Synthesis of Non-Precious CuO-CeO₂ Nanocrystalline Catalysts with Enhanced Catalytic Activity for Methane Oxidation. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E878. [PMID: 30875991 PMCID: PMC6471573 DOI: 10.3390/ma12060878] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Revised: 03/07/2019] [Accepted: 03/13/2019] [Indexed: 12/17/2022]
Abstract
In this study, xCuO-CeO₂ mixed oxide catalysts (Cu weight ratio x = 1.5, 3, 4.5, 6 and 15 wt.%) were prepared using solution combustion synthesis (SCS) and their catalytic activities towards the methane (CH₄) oxidation reaction were studied. The combustion synthesis of the pure CeO₂ and the CuO-CeO₂ solid solution catalysts was performed using copper and/or cerium nitrate salt as an oxidizer and citric acid as a fuel. A variety of standard techniques, including scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), thermo-gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were employed to reveal the microstructural, crystal, thermal and electronic properties that may affect the performance of CH₄ oxidation. The CuO subphase was detected in the prepared solid solution and confirmed with XRD and Raman spectroscopy, as indicated by the XRD peaks at diffraction angles of 35.3° and 38.5° and the Ag Raman mode at 289 cm-1, which are characteristics of tenorite CuO. A profound influence of Cu content was evident, not only affecting the structural and electronic properties of the catalysts, but also the performance of catalysts in the CH₄ oxidation. The presence of Cu in the CeO₂ lattice obviously promoted its catalytic activity for CH₄ catalytic oxidation. Among the prepared catalysts, the 6% CuO-CeO₂ catalyst demonstrated the highest performance, with T50 = 502 °C and T80 = 556 °C, an activity that is associated with the availability of a fine porous structure and the enhanced surface area of this catalyst. The results demonstrate that nanocrystalline copper-ceria mixed oxide catalysts could serve as an inexpensive and active material for CH₄ combustion.
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Affiliation(s)
- Abdallah F Zedan
- Department of Laser Applications in Metrology, Photochemistry and Agric., National Institute of Laser Enhanced Sciences, Cairo University, Giza 12613, Egypt.
| | - Amina S AlJaber
- Department of Chemistry and Earth Sciences, Faculty of Arts and Sciences, Qatar University, Doha 2713, Qatar.
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234
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Ozer D, Icten O. Solution Combustion Synthesis of Iron Oxyborate (Fe3BO6). JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2019. [DOI: 10.18596/jotcsa.500355] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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235
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A Facile Fabrication of Supported Ni/SiO2 Catalysts for Dry Reforming of Methane with Remarkably Enhanced Catalytic Performance. Catalysts 2019. [DOI: 10.3390/catal9020183] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Ni catalysts supported on SiO2 are prepared via a facile combustion method. Both glycine fuel and ammonium nitrate combustion improver facilitate the formation of much smaller Ni nanoparticles, which give excellent activity and stability, as well as a syngas with a molar ratio of H2/CO of about 1:1 due to the minimal side reaction toward revserse water gas shift (RWGS) in CH4 dry reforming.
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236
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Athinarayanan J, Periasamy VS, Qasem AA, Al-Shagrawi RA, Alshatwi AA. Synthesis of SiO 2 nanostructures from Pennisetum glaucum and their effect on osteogenic differentiation for bone tissue engineering applications. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:23. [PMID: 30747324 DOI: 10.1007/s10856-019-6223-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 01/14/2019] [Indexed: 06/09/2023]
Abstract
Silica nanostructures were fabricated from Pennisetum glaucum (pearl millet) seed husk by acid-pretreatment and calcination. The fabricated silica nanostructure (SN) functional groups, crystalline nature, surface morphology, and particle size were analyzed by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy, respectively. Additionally, the cytocompatibility of SNs was analyzed on human mesenchymal stem cells (hMSCs) in an MTT assay, propidium iodine (PI) staining, and acridine orange/ethidium bromide (AO/EB) staining. We observed peaks at 1090 and 800 cm-1, which were assigned to symmetric, asymmetric, and bending vibrations of O-Si-O. The SNs showed an amorphous nature with a spherical shape and were 20-60 nm in diameter. The MTT assay results indicated that SNs exhibited cytocompatibility in hMSCs. The PI staining and AO/EB staining results suggested that SNs do not affect nuclear morphology at up to 400 μg/mL. Furthermore, SNs effect on osteogenic differentiation in hMSCs was studied. These results indicate that SNs induced osteogenic differentiation in hMSCs by upregulation of ALP, BSP, ON and RUNX2 genes. Our process could valorize the Pennisetum glaucum agricultural residues to high value products for bone tissue engineering applications.
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Affiliation(s)
- Jegan Athinarayanan
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Vaiyapuri Subbarayan Periasamy
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Akram Ahmed Qasem
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Reshod A Al-Shagrawi
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ali A Alshatwi
- Nanobiotechnology and Molecular Biology Research Laboratory, Department of Food Science and Nutrition, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
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237
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Kurmashov PB, Bannov AG, Popov MV, Kazakova AA, Ukhina AV, Kuvshinov GG. Effect of Process Features and Parameters of Preparation of a Nickel Catalyst by Reduction of Nickel Nitrate with Hexamethylenetetramine on the Catalyst Performance in Synthesis of Nanofibrous Carbon. RUSS J APPL CHEM+ 2019. [DOI: 10.1134/s1070427218110198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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238
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Photocatalytic properties of solution combustion synthesized ZnO powders using mixture of CTAB and glycine and citric acid fuels. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2018.11.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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239
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Influence of La3+ site substitution on the structural, magnetic and magnetocaloric properties of ZnFe2−LaxO4 (x = 0.00, 0.001, 0.005 and 0.01) spinel zinc ferrites. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.12.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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240
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241
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Fernández-Osorio A, Tapia M, Vázquez-Olmos A, Chávez J. Enhanced luminescence properties of ZnGa2O4:Cr3+ nanoparticles with an average crystallite size of 5 nm. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.10.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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242
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Sanctis S, Hoffmann RC, Koslowski N, Foro S, Bruns M, Schneider JJ. Aqueous Solution Processing of Combustible Precursor Compounds into Amorphous Indium Gallium Zinc Oxide (IGZO) Semiconductors for Thin Film Transistor Applications. Chem Asian J 2018; 13:3912-3919. [PMID: 30426698 DOI: 10.1002/asia.201801371] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/07/2018] [Indexed: 11/08/2022]
Abstract
Combustion synthesis of semiconducting amorphous indium gallium zinc oxide IGZO (In:Ga:Zn, 7:1:1.5) thin films was carried out using urea nitrate precursor compounds of indium(III), gallium(III) and zinc(II). This approach provides further understanding towards the oxide formation process under a moderate temperature regime by employment of well-defined coordination compounds. All precursor compounds were fully characterized by spectroscopic techniques as well as by single crystal structure analysis. Their intrinsic thermal decomposition was studied by a combination of differential scanning calorimetry (DSC) and thermogravimetry coupled with mass spectrometry and infrared spectroscopy (TG-MS/IR). For all precursors a multistep decomposition involving a complex redox-reaction pathway under in situ formation of nitrogen containing molecular species was observed. Controlled thermal conversion of a mixture of the indium, gallium and zinc urea nitrate complexes into ternary amorphous IGZO films could thus be achieved. Thin film transistors (TFTs) were fabricated from a defined compositional mixture of the molecular precursors. The TFT devices exhibited decent charge carrier mobilities of 0.4 and 3.1 cm2 /(Vs) after annealing of the deposited films at temperatures as low as 250 and 350 °C, respectively. This approach represents a significant step further towards a low temperature solution processing of semiconducting thin films.
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Affiliation(s)
- Shawn Sanctis
- Department of Chemistry, Eduard-Zintl Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287, Darmstadt, Germany
| | - Rudolf C Hoffmann
- Department of Chemistry, Eduard-Zintl Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287, Darmstadt, Germany
| | - Nico Koslowski
- Department of Chemistry, Eduard-Zintl Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287, Darmstadt, Germany
| | - Sabine Foro
- Department of Material Science, Technische Universität Darmstadt, Alarich-Weiss-Straße 8, 64287, Darmstadt, Germany
| | - Michael Bruns
- Institute for Applied Materials-Karlsruhe Nano Micro Facility, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344, Eggenstein-Leopoldshafen, Germany
| | - Jörg J Schneider
- Department of Chemistry, Eduard-Zintl Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287, Darmstadt, Germany
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243
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Dhar P, Vinu R. Microwave-Assisted Catalytic Solvolysis of Lignin to Phenols: Kinetics and Product Characterization. ACS OMEGA 2018; 3:15076-15085. [PMID: 31458173 PMCID: PMC6643774 DOI: 10.1021/acsomega.8b01509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 10/12/2018] [Indexed: 06/10/2023]
Abstract
Lignin, a major component of lignocellulosic biomass, is a valuable source of phenolic and aromatic compounds. It is, therefore, vital to develop strategies to selectively deconstruct lignin to valuable chemicals. This study focuses on the kinetics of depolymerization of lignin and the production of phenols via a microwave-assisted catalytic process at mild conditions of 80 °C in dimethyl sulfoxide/water medium. Four different catalysts used in this study, viz., Fe2O3, LaFeO3, ZrO2, and zeolite-Y hydrogen (ZYH), were characterized for structure, specific surface area, and surface morphology. The molecular weight reduction of lignin and the evolution of phenolic monomers and oligomers were monitored using various techniques, and the rate constants of lignin degradation in the presence of different catalysts were determined using a continuous distribution kinetics model, assuming scission of the lignin macromolecule at any random position. The rate constants (min-1) followed the trend: ZYH (26 × 10-4) ≈ LaFeO3 (25 × 10-4) > ZrO2 (22 × 10-4) > Fe2O3 ≈ no catalyst (16 × 10-4). Vanillic acid (15 mg g-1) and methyl phenol (17 mg g-1) were the major phenolics obtained with LaFeO3, whereas coniferaldehyde (13 mg g-1) was the major phenolic compound with Fe2O3. Vanillin was produced at ca. 11 mg g-1 with both Fe2O3 and ZYH. LaFeO3 is shown to be a promising catalyst for both molecular weight reduction of lignin and the production of monomeric phenols, whereas the use of Fe2O3 results in the formation of only phenols, possibly via specific end-chain depolymerization. The selectivities of the monomeric phenols were higher with these two catalysts, whereas with ZYH and ZrO2, the selectivities of the oligomers were better. The reusability of the catalysts and the effect of catalyst loading on kinetics of lignin depolymerization were also evaluated.
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Affiliation(s)
- Piyali Dhar
- Department of Chemical Engineering
and National Centre for Combustion Research and Development, Indian Institute of Technology Madras, Chennai 600036, India
| | - Ravikrishnan Vinu
- Department of Chemical Engineering
and National Centre for Combustion Research and Development, Indian Institute of Technology Madras, Chennai 600036, India
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Ortiz-Quiñonez JL, Pal U, Villanueva MS. Structural, Magnetic, and Catalytic Evaluation of Spinel Co, Ni, and Co-Ni Ferrite Nanoparticles Fabricated by Low-Temperature Solution Combustion Process. ACS OMEGA 2018; 3:14986-15001. [PMID: 31458165 PMCID: PMC6644305 DOI: 10.1021/acsomega.8b02229] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/25/2018] [Indexed: 05/24/2023]
Abstract
Here, we present the low-temperature (∼600 °C) solution combustion method for the fabrication of CoFe2O4, NiFe2O4, and Co0.5Ni0.5Fe2O4 nanoparticles (NPs) of 12-64 nm range in pure cubic spinel structure, by adjusting the oxidant (nitrate ions)/reductant (glycine) ratio in the reaction mixture. Although nitrate ions/glycine (N/G) ratios of 3 and 6 were used for the synthesis, phase-pure NPs could be obtained only for the N/G ratio of 6. For the N/G ratio 3, certain amount of Ni2+ cations was reduced to metallic nickel. The NH3 gas generated during the thermal decomposition of the amino acid (glycine, H2NCH2COOH) induced the reduction reaction. X-ray diffraction (XRD), Raman spectroscopy, vibrating sample magnetometry, and X-ray photoelectron spectroscopy techniques were utilized to characterize the synthesized materials. XRD analyses of the samples indicate that the Co0.5Ni0.5Fe2O4 NPs have lattice parameter larger than that of NiFe2O4, but smaller than that of CoFe2O4 NPs. Although the saturation magnetization (M s) of Co0.5Ni0.5Fe2O4 NPs lies in between the saturation magnetization values of CoFe2O4 and NiFe2O4 NPs, high coercivity (H c, 875 Oe) of the NPs indicate their hard ferromagnetic behavior. Catalytic behavior of the fabricated spinel NPs revealed that the samples containing metallic Ni are active catalysts for the degradation of 4-nitrophenol in aqueous medium.
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Affiliation(s)
- Jose-Luis Ortiz-Quiñonez
- Facultad
de Ingeniería, Benemérita
Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570 Puebla, Mexico
| | - Umapada Pal
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Apartado Postal
J-48, 72570 Puebla, Pue., Mexico
| | - Martin Salazar Villanueva
- Facultad
de Ingeniería, Benemérita
Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570 Puebla, Mexico
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Mg0.5Zn0.5Fe2O4-polyurethane thin nanocomposite coating as broadband microwave absorber. SN APPLIED SCIENCES 2018. [DOI: 10.1007/s42452-018-0041-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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246
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Development of SrTiO3 Photocatalysts with Visible Light Response Using Amino Acids as Dopant Sources for the Degradation of Organic Pollutants in Aqueous Systems. Catalysts 2018. [DOI: 10.3390/catal8110528] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
N-doped and N,S-co-doped SrTiO3 photocatalysts were prepared using glycine and L-histidine amino acids as nitrogen sources and L-cysteine as nitrogen and sulphur source. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), N2 porosimetry, UV-Vis diffuse reflectance (DRS) and fluorescence spectroscopy, dynamic light scattering (DLS). Cubic SrTiO3 phase is formed in all samples, with crystal size ranged from 14.2 nm to 35.7 nm. The catalysts’ specific surface area and porosity depend on the amino acid dopant showing micro-mesoporosity for glycine, mesoporosity for histidine and non-porosity for cysteine. The lowest band gap (2.95 eV) was observed for the sample G-N-STO3 prepared with glycine (N:Sr:Ti 3:1:1 molar ratio) which produced also the higher amount of •OH radicals. The photocatalytic activity was tested against the degradation of methylene blue (MB) dye under UV-Vis and visible light irradiation following first-order kinetics.
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247
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Jiang Y, Huang T, Dong L, Qin Z, Ji H. Ni/bentonite catalysts prepared by solution combustion method for CO2 methanation. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2018.03.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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248
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Tajuddin MM, Ideris A, Ismail M. In Situ Glycine–Nitrate Combustion Synthesis of Ni–La/SiO2 Catalyst for Methane Cracking. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03499] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mohamad Muzakkir Tajuddin
- Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan, Pahang, Malaysia
| | - Asmida Ideris
- Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan, Pahang, Malaysia
| | - Mazni Ismail
- Faculty of Chemical & Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan, Pahang, Malaysia
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249
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Yazdani S, Pettes MT. Nanoscale self-assembly of thermoelectric materials: a review of chemistry-based approaches. NANOTECHNOLOGY 2018; 29:432001. [PMID: 30052199 DOI: 10.1088/1361-6528/aad673] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This review is concerned with the leading methods of bottom-up material preparation for thermal-to-electrical energy interconversion. The advantages, capabilities, and challenges from a material synthesis perspective are surveyed and the methods are discussed with respect to their potential for improvement (or possibly deterioration) of application-relevant transport properties. Solution chemistry-based synthesis approaches are re-assessed from the perspective of thermoelectric applications based on reported procedures for nanowire, quantum dot, mesoporous, hydro/solvothermal, and microwave-assisted syntheses as these techniques can effectively be exploited for industrial mass production. In terms of energy conversion efficiency, the benefit of self-assembly can occur from three paths: suppressing thermal conductivity, increasing thermopower, and boosting electrical conductivity. An ideal thermoelectric material gains from all three improvements simultaneously. Most bottom-up materials have been shown to exhibit very low values of thermal conductivity compared to their top-down (solid-state) counterparts, although the main challenge lies in improving their poor electrical properties. Recent developments in the field discussed in this review reveal that the traditional view of bottom-up thermoelectrics as inferior materials suffering from poor performance is not appropriate. Thermopower enhancement due to size and energy filtering effects, electrical conductivity enhancement, and thermal conductivity reduction mechanisms inherent in bottom-up nanoscale self-assembly syntheses are indicative of the impact that these techniques will play in future thermoelectric applications.
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Affiliation(s)
- Sajad Yazdani
- Department of Mechanical Engineering and Institute of Materials Science, University of Connecticut, Storrs, CT 06269, United States of America
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250
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Hezam A, Namratha K, Ponnamma D, Drmosh QA, Saeed AMN, Cheng C, Byrappa K. Direct Z-Scheme Cs 2O-Bi 2O 3-ZnO Heterostructures as Efficient Sunlight-Driven Photocatalysts. ACS OMEGA 2018; 3:12260-12269. [PMID: 31459301 PMCID: PMC6645477 DOI: 10.1021/acsomega.8b01449] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 09/14/2018] [Indexed: 05/09/2023]
Abstract
Limited light absorption, inefficient electron-hole separation, and unsuitable positions of conduction band bottom and/or valence band top are three major critical issues associated with high-efficiency photocatalytic water treatment. An attempt has been carried out here to address these issues through the synthesis of direct Z-scheme Cs2O-Bi2O3-ZnO heterostructures via a facile, fast, and economic method: solution combustions synthesis. The photocatalytic performances are examined by the 4-chlorophenol degradation test under simulated sunlight irradiation. UV-vis diffuse reflectance spectroscopy analysis, electrochemical impedance test, and the observed transient photocurrent responses prove not only the significant role of Cs2O in extending light absorption to visible and near-infrared regions but also its involvement in charge carrier separation. Radical-trapping experiments verify the direct Z-scheme approach followed by the charge carriers in heterostructured Cs2O-Bi2O3-ZnO photocatalysts. The Z-scheme charge carrier pathway induced by the presence of Cs2O has emerged as the reason behind the efficient charge carrier separation and high photocatalytic activity.
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Affiliation(s)
- Abdo Hezam
- Center
for Materials Science and Technology, University
of Mysore, Vijana Bhavana, Manasagangothiri, Mysuru 570 006, India
| | - K. Namratha
- Center
for Materials Science and Technology, University
of Mysore, Vijana Bhavana, Manasagangothiri, Mysuru 570 006, India
| | | | - Q. A. Drmosh
- Physics
Department and Center of Research Excellence in Nanotechnology, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Adel Morshed Nagi Saeed
- Department
of Polymer Science and Technology, Sri Jayachamarajendra College of
Engineering, JSS Science & Technology
University, Mysuru 570 006, India
| | - Chun Cheng
- Department
of Materials Science and Engineering, Southern
University of Science and Technology, Shenzhen 518055, P. R. China
- E-mail: . Phone: +91-821-2419422
| | - K. Byrappa
- Center
for Materials Science and Technology, University
of Mysore, Vijana Bhavana, Manasagangothiri, Mysuru 570 006, India
- E-mail: . Phone: +86 0755-88018568
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