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Gurusamy S, Banerjee S, Sundaresan A, Liang M, Shiv Halasyamani P, Natarajan S. Synthesis, Optical, Dielectric, SHG, Magnetic and Visible Light Driven Catalytic Studies on Compounds Belonging to the Swedenborgite Structure. Chem Asian J 2024:e202301113. [PMID: 38321639 DOI: 10.1002/asia.202301113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/08/2024]
Abstract
A new compound, InBaZn3 GaO7 , with swedenborgite structure along with transition metal (TM) substituted variants have also been prepared. The structure contains layers of tetrahedral ions (Zn2+ /Ga3+ ) connected by octahedrally coordinated In3+ ion forming the three-dimensional structure with voids where the Ba2+ ions occupy. The TM substituted compounds form with new colors. The origin of the color was understood based on the ligand-field transitions. The near IR reflectivity studies indicate that the Ni - substituted compounds exhibit good near - IR reflectivity behavior, making them possible candidates for 'cool pigments'. The temperature dependent dielectric studies indicate that the InBaZn3 GaO7 compound undergoes a phase transition at ~360 °C. The compounds are active towards second harmonic generation (SHG). Magnetic studies show the compounds, InBaZn2 CoFeO7 and InBaZn2 CuFeO7 to be anti-ferromagnetic in nature. The copper containing compounds were found to be good catalysts, under visible light, for the oxidation of aromatic alkenes. The many properties observed in the swedenborgite structure-based compounds suggests that the mineral structure offers a fertile ground to investigate newer compounds and properties.
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Affiliation(s)
- Sivakumar Gurusamy
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India
| | - Souvik Banerjee
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O., Bangalore, 560 064, India
| | - Athinarayanan Sundaresan
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur P.O., Bangalore, 560 064, India
| | - Mingli Liang
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas, 77204-5003, United States
| | - P Shiv Halasyamani
- Department of Chemistry, University of Houston, 112 Fleming Building, Houston, Texas, 77204-5003, United States
| | - Srinivasan Natarajan
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, 560012, India
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2
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Fan RY, Zhang YS, Lv JY, Han GQ, Chai YM, Dong B. The Promising Seesaw Relationship Between Activity and Stability of Ru-Based Electrocatalysts for Acid Oxygen Evolution and Proton Exchange Membrane Water Electrolysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304636. [PMID: 37789503 DOI: 10.1002/smll.202304636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/09/2023] [Indexed: 10/05/2023]
Abstract
The development of electrocatalysts that are not reliant on iridium for efficient acid-oxygen evolution is a critical step towards the proton exchange membrane water electrolysis (PEMWE) and green hydrogen industry. Ruthenium-based electrocatalysts have garnered widespread attention due to their remarkable catalytic activity and lower commercial price. However, the challenge lies in balancing the seesaw relationship between activity and stability of these electrocatalysts during the acid-oxygen evolution reaction (OER). This review delves into the progress made in Ru-based electrocatalysts with regards to acid OER and PEMWE applications. It highlights the significance of customizing the acidic OER mechanism of Ru-based electrocatalysts through the coordination of adsorption evolution mechanism (AEM) and lattice oxygen oxidation mechanism (LOM) to attain the ideal activity and stability relationship. The promising tradeoffs between the activity and stability of different Ru-based electrocatalysts, including Ru metals and alloys, Ru single-atomic materials, Ru oxides, and derived complexes, and Ru-based heterojunctions, as well as their applicability to PEMWE systems, are discussed in detail. Furthermore, this paper offers insights on in situ control of Ru active sites, dynamic catalytic mechanism, and commercial application of PEMWE. Based on three-way relationship between cost, activity, and stability, the perspectives and development are provided.
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Affiliation(s)
- Ruo-Yao Fan
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Yu-Sheng Zhang
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Jing-Yi Lv
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Guan-Qun Han
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio, 45221, USA
| | - Yong-Ming Chai
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
| | - Bin Dong
- State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, 266580, P. R. China
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Riporto F, Dhouib A, Gheata A, Beauquis S, Molina E, Guené-Girard S, Galez C, Bornet A, Gautier-Luneau I, Gerber-Lemaire S, Monnier V, Le Dantec R, Mugnier Y. Nonclassical Nucleation and Crystallization of LiNbO 3 Nanoparticles from the Aqueous Solvothermal Alkoxide Route. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2306417. [PMID: 37968253 DOI: 10.1002/smll.202306417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/09/2023] [Indexed: 11/17/2023]
Abstract
The exact molecular reaction pathway and crystallization mechanisms of LiNbO3 nanoparticles under solvothermal conditions are derived through extensive time- and temperature-resolved experiments allowing to track all the transient molecular and solid species. Starting with a simple mixing of Li/Nb ethoxides, water addition is used to promote condensation after ligand exchange with different co-solvents including alcohols and glycols of variable carbon-chain length. A nonclassical nucleation scheme is first demonstrated after the identification of new octanuclear complexes with a {Li4 Nb4 O10 } core whose solvophobic interactions mediate their aggregation, thus, resulting in a colloidal gel at room-temperature. Upon heating, a more or less frustrated aggregation-mediated crystallization process is then evidenced leading to LiNbO3 nanocrystals of adjustable mean size between 20 and 100 nm. Such a fine control can be attributed to the variable Nb-OR (R = alkoxy/glycoxy ligand) binding interactions at the surface of crystalline intermediates. Demonstration of such a nonclassical nucleation process and crystallization mechanism for LiNbO3 not only sheds light on the entire growth process of multifunctional nanomaterials with non-perovskite crystalline structures, but also opens new avenues for the identification of novel bimetallic oxoclusters involved in the formation of several mixed oxides from the aqueous alkoxide route.
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Affiliation(s)
- Florian Riporto
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Ameni Dhouib
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Adrian Gheata
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Group for Functionalized Biomaterials, Lausanne, 1015, Switzerland
| | | | - Emilie Molina
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Simon Guené-Girard
- Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, Grenoble, 38000, France
| | - Christine Galez
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Aurélien Bornet
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Nuclear Magnetic Resonance Platform, EPFL SB ISIC-NMRP, Batochime, Lausanne, 1015, Switzerland
| | | | - Sandrine Gerber-Lemaire
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Group for Functionalized Biomaterials, Lausanne, 1015, Switzerland
| | - Virginie Monnier
- Univ Lyon, Ecole Centrale de Lyon, CNRS, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270, Ecully, 69130, France
| | - Ronan Le Dantec
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Yannick Mugnier
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
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Liu Y, Zhong J, Liu Z, Wen W, Sun B, Wang H, Yao L, Chen Z, Wang D, Wu Z. Single Unit-Cell Layered Bi 2 Fe 4 O 9 Nanosheets: Synthesis, Formation Mechanism, and Anisotropic Thermal Expansion. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207202. [PMID: 36683197 DOI: 10.1002/smll.202207202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 12/28/2022] [Indexed: 06/17/2023]
Abstract
As an important multiferroic material, pure and low-dimensional phase-stable bismuth ferrite has wide applications. Herein, one-pot hydrothermal method was used to synthesize bismuth ferrite. Almost pure Bi2 Fe4 O9 , BiFeO3 , and their mixture were successfully obtained by controlling the KOH concentration in the hydrothermal solutions. The as-prepared Bi2 Fe4 O9 products were crystalline with Pbam space group, had nanosheet morphology, and tended to aggregate into nanofloret or random stacking. Each Bi2 Fe4 O9 nanosheet was a single crystal with (001) plane as its exposed surface. Single unit-cell layered Bi2 Fe4 O9 nanosheets had a uniform thickness of 1 nm. The surface energies of various (100), (010), and (001) planes were 3.6-4.0, 5.6-15.1, and 1.7-3.0 J m-2 , respectively, in the Bi2 Fe4 O9 crystal. The formation mechanism and structural model of the as-prepared single unit-cell layered Bi2 Fe4 O9 nanosheets have been given. The growth of Bi2 Fe4 O9 nanosheets was discussed. Thermal analysis showed that the Bi2 Fe4 O9 phase was stable up to 1260 K. The thermal expansion behavior of the Bi2 Fe4 O9 nanosheet was nonlinear. The thermal expansion coefficients of the ultrathin Bi2 Fe4 O9 nanosheets on the a-, b-, c-axes, and on the unit-cell volume V were determined, showing an anisotropic thermal expansion behavior. This study is helpful for the controllable synthesis of ultrathin Bi2 Fe4 O9 nanosheets.
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Affiliation(s)
- Yunpeng Liu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiajun Zhong
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100049, China
| | - Ziyi Liu
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Wen Wen
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Bo Sun
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Hao Wang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100049, China
| | - Lei Yao
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhongjun Chen
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
| | - Dongqi Wang
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Zhonghua Wu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
- University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100049, China
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5
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Heveling J. La-Doped Alumina, Lanthanum Aluminate, Lanthanum Hexaaluminate, and Related Compounds: A Review Covering Synthesis, Structure, and Practical Importance. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Josef Heveling
- Department of Chemistry, Tshwane University of Technology, Pretoria 0001, South Africa
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6
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Pandimurugan AR, Prasath GV, Usha KS, Vivekanandan J, Karthikeyan C, Sankaranarayanan K, Ravi G. Synthesis, properties and antibacterial activity of Ca doped Zn 2SnO 4 nanoparticles by microwave assisted method. APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING 2023; 129:154. [PMID: 36741277 PMCID: PMC9885929 DOI: 10.1007/s00339-023-06410-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
A major problem in world health care is the development of antibiotic resistance in bacteria. In light of this, pure and calcium-doped zinc tin oxide (ZTO) nanoparticles, Zn2SnO4 (S1), Zn2Sn0.7Ca0.3O4 (S2), Zn2Sn0.5Ca0.5O4 (S3), and Zn2Sn0.3Ca0.7O4 (S4), were synthesized via simple and cost effective microwave assisted method. The doping effect on antibacterial activity was studied in detail. The XRD spectrum revealed that all the deposited samples exhibited a spinel cubic structure. A decrease in crystallite size, an increase in strain and dislocation density was observed with an increase in Ca concentration. FESEM images exhibited an irregular and non-homogeneous nature with crystalline morphology having a physical dimension of nm size. EDAX confirmed the purity of deposited samples. We used the agar well diffusion technique to study the antibacterial activity of Gram-positive and Gram-negative bacteria. The doping of the ZTO matrix with Ca ions increased its antibacterial performance by 99% against Klebsiella pneumoniae bacteria, and its effectiveness was enhanced with increasing Ca ion concentration inside the Zn2SnO4 nanoparticles.
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Affiliation(s)
- A. R. Pandimurugan
- Department of Physics, Alagappa University, Karaikudi, Tamil Nadu 630 004 India
| | - G. Vijaya Prasath
- Department of Physics, Sree Sevugan Annamalai College, Devakottai, Tamil Nadu 630 303 India
| | - K. S. Usha
- Department of Physics, Bannari Amman Institute of Technology, Sathyamangalam, Erode, Tamil Nadu 638401 India
| | - J. Vivekanandan
- Department of Physics, Bannari Amman Institute of Technology, Sathyamangalam, Erode, Tamil Nadu 638401 India
| | - C. Karthikeyan
- Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 04620 Republic of Korea
| | - K. Sankaranarayanan
- Department of Physics, Alagappa University, Karaikudi, Tamil Nadu 630 004 India
| | - G. Ravi
- Department of Physics, Alagappa University, Karaikudi, Tamil Nadu 630 004 India
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7
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Soultati A, Tountas M, Armadorou KK, Yusoff ARBM, Vasilopoulou M, Nazeeruddin MK. Synthetic approaches for perovskite thin films and single-crystals. ENERGY ADVANCES 2023; 2:1075-1115. [DOI: 10.1039/d3ya00098b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Halide perovskites are compelling candidates for the next generation of photovoltaic technologies owing to an unprecedented increase in power conversion efficiency and their low cost, facile fabrication and outstanding semiconductor properties.
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Affiliation(s)
- Anastasia Soultati
- Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research Demokritos, 15341 Agia Paraskevi, Attica, Greece
| | - Marinos Tountas
- Department of Electrical Engineering, Hellenic Mediterranean University, Estavromenos, 71410 Heraklion Crete, Greece
| | - Konstantina K. Armadorou
- Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research Demokritos, 15341 Agia Paraskevi, Attica, Greece
| | - Abd. Rashid bin Mohd Yusoff
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Maria Vasilopoulou
- Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research Demokritos, 15341 Agia Paraskevi, Attica, Greece
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
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8
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Han L, Zhang J, Zou M, Tong JJ. Toward Superb Perovskite Oxide Electrocatalysts: Engineering of Coupled Nanocomposites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204784. [PMID: 36300911 DOI: 10.1002/smll.202204784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/06/2022] [Indexed: 06/16/2023]
Abstract
A significant issue that bedeviled the commercialization of renewable energy technologies, ranging from low-temperature water electrolyzers to high-temperature solid oxide cells, is the lack of high-performance catalysts. Among various candidates that could tackle such a challenge, perovskite oxides are rising-star materials because of their unique structural and compositional flexibility. However, single-phase perovskite oxides are challenging to satisfy all the requirements of electrocatalysts concurrently for practical applications, such as high catalytic activity, excellent stability, good ionic and electronic conductivities, and superior chemical/thermo-mechanical robustness. Impressively, perovskite oxides with coupled nanocomposites are emerging as a novel form offering multifunctionality due to their intrinsic features, including infinite interfaces with solid interaction, tunable compositions, flexible configurations, and maximum synergistic effects between assorted components. Considering this new configuration has attracted great attention owing to its promising performances in various energy-related applications, this review timely summarizes the leading-edge development of perovskite oxide-based coupled nanocomposites. Their state-of-art synthetic strategies are surveyed and highlighted, their unique structural advantages are highlighted and illustrated through the typical oxygen reduction reaction and oxygen evolution reactions in both high and low-temperature applications. Opinions on the current critical scientific issues and opportunities in this burgeoning research field are all provided.
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Affiliation(s)
- Liang Han
- Department of Materials Science and Engineering, Clemson University, Clemson, SC, 29634, USA
| | - Jiawei Zhang
- Department of Materials Science and Engineering, Clemson University, Clemson, SC, 29634, USA
| | - Minda Zou
- Department of Materials Science and Engineering, Clemson University, Clemson, SC, 29634, USA
| | - Jianhua Joshua Tong
- Department of Materials Science and Engineering, Clemson University, Clemson, SC, 29634, USA
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Basavarajappa M, Chakraborty S. Rationalization of Double Perovskite Oxides as Energy Materials: A Theoretical Insight from Electronic and Optical Properties. ACS MATERIALS AU 2022; 2:655-664. [PMID: 36855547 PMCID: PMC9928412 DOI: 10.1021/acsmaterialsau.2c00031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/28/2022]
Abstract
The quest for clean energy conversion has become one of the most important efforts for tackling the greenhouse effect for a sustainable environment. This involves energy-scavenging processes like photovoltaics and catalysis, which have been manifested using the solar spectrum. For high-efficiency and durable conversion processes, the search for the low-cost, stable, and environment-friendly functional materials is elusive. In the field of solar cells and catalysis, double perovskite oxides (DPOs) have emerged as potential candidates in recent years. Through compositional tuning and band gap engineering, a plethora of materials are being developed for pertinent applications in this field of energy. Oxide perovskites possess the advantage of a high carrier lifetime compared to that with halide perovskites, which can be beneficial for energy applications. In this perspective, we have presented theoretical investigations focusing on the different types of double perovskite oxides based on the composition space in a systematic manner. Corresponding electronic and optical properties are discussed along with a future outlook on the novel routes to find efficient members in this family.
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Dantelle G, Beauquis S, Le Dantec R, Monnier V, Galez C, Mugnier Y. Solution-Based Synthesis Routes for the Preparation of Noncentrosymmetric 0-D Oxide Nanocrystals with Perovskite and Nonperovskite Structures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200992. [PMID: 35691941 DOI: 10.1002/smll.202200992] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/21/2022] [Indexed: 06/15/2023]
Abstract
With the miniaturization of electronic-based devices, the foreseen potential of new optical nanoprobes and the assessment of eventual size and shape effects, elaboration of multifunctional noncentrosymmetric nanocrystals with ferroelectric, pyroelectric, piezoelectric, and nonlinear optical properties are the subject of an increasing research interest. Here, the recent achievements from the solution-based methods (coprecipitation in homogeneous and nanostructured media, sol-gel processes including various chemistries and hydro/solvothermal techniques) to prepare 0-D perovskite and nonperovskite oxides in the 5-500 nm size range are critically reviewed. To cover a representative list of covalent- and ionic-type materials, BaTiO3 and its derivatives, niobate compounds (i.e., K/Na/LiNbO3 ), multiferroic BiFeO3, and crystals of lower symmetry including KTiOPO4 and some iodate compounds such as Fe(IO3 )3 and La(IO3 )3 are systematically in focus. The resulting size, morphology, and aggregation state are discussed in light of the proposed formation mechanisms. Because of a higher complexity related to their chemical composition and crystalline structures, improving the rational design of these multifunctional oxides in terms of finely-tuned compositions, crystalline hosts and structure-property relationships still need in the future a special attention of the research community to the detailed understanding of the reaction pathways and crystallization mechanisms.
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Affiliation(s)
- Géraldine Dantelle
- Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, Grenoble, 38000, France
| | | | - Ronan Le Dantec
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Virginie Monnier
- Univ Lyon, Ecole Centrale de Lyon, CNRS, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270, Ecully, 69130, France
| | - Christine Galez
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Yannick Mugnier
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
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Lomakin MS, Proskurina OV, Levin AA, Sergeev AA, Leonov AA, Nevedomsky VN, Voznesenskiy SS. Pyrochlore Phase in the Bi2O3–Fe2O3–WO3–(H2O) System: its Formation by Hydrothermal-Microwave Synthesis and Optical Properties. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622060134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Progress and Recent Strategies in the Synthesis and Catalytic Applications of Perovskites Based on Lanthanum and Aluminum. MATERIALS 2022; 15:ma15093288. [PMID: 35591622 PMCID: PMC9100353 DOI: 10.3390/ma15093288] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/29/2022] [Accepted: 04/29/2022] [Indexed: 11/17/2022]
Abstract
Lanthanum aluminate-based perovskite (LaAlO3) has excellent stability at high temperatures, low toxicity, and high chemical resistance and also offers wide versatility to the substitution of La3+ and Al3+, thus, allowing it to be applied as a catalyst, nano-adsorbent, sensor, and microwave dielectric resonator, amongst other equally important uses. As such, LaAlO3 perovskites have gained importance in recent years. This review considers the extensive literature of the past 10 years on the synthesis and catalytic applications of perovskites based on lanthanum and aluminum (LaAlO3). The aim is, first, to provide an overview of the structure, properties, and classification of perovskites. Secondly, the most recent advances in synthetic methods, such as solid-state methods, solution-mediated methods (co-precipitation, sol–gel, and Pechini synthesis), thermal treatments (combustion, microwave, and freeze drying), and hydrothermal and solvothermal methods, are also discussed. The most recent energetic catalytic applications (the dry and steam reforming of methane; steam reforming of toluene, glycerol, and ethanol; and oxidative coupling of methane, amongst others) using these functional materials are also addressed. Finally, the synthetic challenges, advantages, and limitations associated with the preparation methods and catalytic applications are discussed.
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Gupta A, Silotia H, Kumari A, Dumen M, Goyal S, Tomar R, Wadehra N, Ayyub P, Chakraverty S. KTaO 3 -The New Kid on the Spintronics Block. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106481. [PMID: 34961972 DOI: 10.1002/adma.202106481] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Long after the heady days of high-temperature superconductivity, the oxides came back into the limelight in 2004 with the discovery of the 2D electron gas (2DEG) in SrTiO3 (STO) and several heterostructures based on it. Not only do these materials exhibit interesting physics, but they have also opened up new vistas in oxide electronics and spintronics. However, much of the attention has recently shifted to KTaO3 (KTO), a material with all the "good" properties of STO (simple cubic structure, high mobility, etc.) but with the additional advantage of a much larger spin-orbit coupling. In this state-of-the-art review of the fascinating world of KTO, it is attempted to cover the remarkable progress made, particularly in the last five years. Certain unsolved issues are also indicated, while suggesting future research directions as well as potential applications. The range of physical phenomena associated with the 2DEG trapped at the interfaces of KTO-based heterostructures include spin polarization, superconductivity, quantum oscillations in the magnetoresistance, spin-polarized electron transport, persistent photocurrent, Rashba effect, topological Hall effect, and inverse Edelstein Effect. It is aimed to discuss, on a single platform, the various fabrication techniques, the exciting physical properties and future application possibilities of this family of materials.
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Affiliation(s)
- Anshu Gupta
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
| | - Harsha Silotia
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
| | - Anamika Kumari
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
| | - Manish Dumen
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
| | - Saveena Goyal
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
| | - Ruchi Tomar
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
| | - Neha Wadehra
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
| | - Pushan Ayyub
- Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai, India
| | - Suvankar Chakraverty
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Sector-81, Mohali, Punjab, 140306, India
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14
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Rajakumaran R, Balamurugan K, Chen SM, Sukanya R. Facile synthesis of neodymium stannate nanoparticles an effective electrocatalyst for the selective detection of dimetridazole in biological samples. Anal Chim Acta 2022; 1190:339234. [PMID: 34857130 DOI: 10.1016/j.aca.2021.339234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 10/09/2021] [Accepted: 10/29/2021] [Indexed: 01/03/2023]
Abstract
In this work, pyrochlore neodymium stannate nanoparticles (Nd2Sn2O7 NP) have been synthesized by a facile co-precipitation technique and employed as an electrode material on GCE for the determination of dimetridazole (DM) drug. The physical properties and texture of the Nd2Sn2O7 NP were characterized by PXRD, Raman spectroscopy, FE-SEM, EDX mapping, XPS, and HR-TEM analytical studies. The electrocatalytic investigation of Nd2Sn2O7 NP/GCE was carried out by CV, and DPV techniques. The fabricated Nd2Sn2O7 NP/GCE shows a lower LOD of 6 nm towards the determination of DM and the calculated sensitivity is 0.61 μA μM-1 cm-2. In addition to that, the constructed sensor delivers notable repeatability, reproducibility, and superior selectivity with the existence of metal ions, biological molecules, and nitro compounds, enabling the electrochemical detection of DM. Furthermore, Nd2Sn2O7 NP/GCE sensor displays acceptable recovery results in the real sample analysis in biological fluids such as human blood serum and human urine.
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Affiliation(s)
- Ramachandran Rajakumaran
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
| | - Karuppaiah Balamurugan
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
| | - Shen-Ming Chen
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC.
| | - Ramaraj Sukanya
- Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan, ROC
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15
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Torregrosa-Rivero V, Sánchez-Adsuar MS, Illán-Gómez MJ. Improving the Performance of BaMnO 3 Perovskite as Soot Oxidation Catalyst Using Carbon Black during Sol-Gel Synthesis. NANOMATERIALS 2022; 12:nano12020219. [PMID: 35055237 PMCID: PMC8781672 DOI: 10.3390/nano12020219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/02/2022] [Accepted: 01/07/2022] [Indexed: 02/06/2023]
Abstract
A series of BaMnO3 solids (BM-CX) were prepared by a modified sol-gel method in which a carbon black (VULCAN XC-72R), and different calcination temperatures (600–850 °C) were used. The fresh and used catalysts were characterized by ICP-OES, XRD, XPS, FESEM, TEM, O2-TPD and H2- TPR-. The characterization results indicate that the use of low calcination temperatures in the presence of carbon black allows decreasing the sintering effects and achieving some improvements regarding BM reference catalyst: (i) smaller average crystal and particles size, (ii) a slight increase in the BET surface area, (iii) a decrease in the macropores diameter range and, (iv) a lower temperature for the reduction of manganese. The hydrogen consumption confirms Mn(III) and Mn(IV) are presented in the samples, Mn(III) being the main oxidation state. The BM-CX catalysts series shows an improved catalytic performance regarding BM reference catalyst for oxidation processes (NO to NO2 and NO2-assisted soot oxidation), promoting higher stability and higher CO2 selectivity. BM-C700 shows the best catalytic performance, i.e., the highest thermal stability and a high initial soot oxidation rate, which decreases the accumulation of soot during the soot oxidation and, consequently, minimizes the catalyst deactivation.
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16
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Jia P, Yu X, Lu J, Zhou X, Yin Z, Tang G, Lu T, Guo L, Song L, Wang B, Hu Y. The Re 2Sn 2O 7 (Re = Nd, Sm, Gd) on the enhancement of fire safety and physical performance of Polyolefin/IFR cable materials. J Colloid Interface Sci 2021; 608:1652-1661. [PMID: 34742080 DOI: 10.1016/j.jcis.2021.10.114] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/16/2021] [Accepted: 10/18/2021] [Indexed: 11/27/2022]
Abstract
Polyolefin (PO) cables used in confined spaces need to have low smoke, low heat release, low toxic gas release and excellent physical properties. In this work, a series of rare earth stannates Re2Sn2O7 (RES, Re = Nd, Sm, Gd) with high temperature catalytic performance were prepared by hydrothermal method for synergistic flame retardant PO/IFR. The flame retardancy, heat release, smoke density, toxic gas release and physical properties of PO composites were thoroughly studied in detail. The RES could enhance the vertical burning rating and the limiting oxygen index (LOI) of PO/IFR composites. Moreover, the residual char of the thermogravimetric analysis increased from 9.7% to 11.4 wt% after the RES added in PO/IFR system. Interestingly, the PO/IFR system containing Gd2Sn2O7 exhibits the lowest peak heat release rate of 233.7 kW/m2. Excellent flame resistance due to the formation of a complete and compact protective char layer. In addition, the toxic release of PO during combustion is also effectively reduced by introducing the RES. The tube furnace combustion test shows that the emission of carbon oxide (CO) and hydrogen cyanide (HCN) of PO/IFR/Gd2Sn2O7 are the lowest. It can be attributed to the catalytic effect of rare earth elements and the blocking effect of the dense char layer. In addition, compared with the PO/IFR composites, the PO/IFR/RES system demonstrate higher mechanical properties and volume resistivity. Therefore, the addition of RES has a positive effect on improving the physical properties and fire safety properties of the PO/IFR cable composites, especially suitable for using in confined spaces.
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Affiliation(s)
- Pengfei Jia
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Xiaoli Yu
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Jingyi Lu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Xiaodong Zhou
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Zhenting Yin
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Gang Tang
- School of Architecture and Civil Engineering, Anhui University of Technology, Ma' anshan, Anhui 243002, People's Republic of China
| | - Tingting Lu
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Liying Guo
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
| | - Lei Song
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China
| | - Bibo Wang
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
| | - Yuan Hu
- State Key Laboratory of Fire Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, PR China.
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17
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Li D, Zhang P, Ge S, Sun G, He Q, Fa W, Li Y, Ma J. A green route to prepare metal-free phthalocyanine crystals with controllable structures by a simple solvothermal method. RSC Adv 2021; 11:31226-31234. [PMID: 35496853 PMCID: PMC9041327 DOI: 10.1039/d1ra04064b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 09/03/2021] [Indexed: 11/21/2022] Open
Abstract
Exploring the environmentally friendly and low-cost synthesis strategies of phthalocyanine (Pc) crystals in just one step is an absolute challenge. The solvothermal synthesis of phthalocyanine crystals shows the advantages of high-quality crystalline products, facile reaction and purification, and low cost. Nevertheless, only a few metal phthalocyanine crystals have been successfully synthesized via solvothermal reactions. In this study, we found that the crystalline β metal-free phthalocyanine needles could be directly prepared via the tetrapolymerization of phthalodinitrile catalyzed by DBU in solvothermal reactions. Similar to the preparation of β-phthalocyanine crystals, the α metal-free phthalocyanine crystals with the specific multiply-laminated structures can be obtained through solvothermal reactions assisted by DBN. SEM characterization showed that the individual β metal-free phthalocyanine has a well-defined quadrangular shape with smooth faces. However, the α metal-free phthalocyanine exhibits a distinctive undulating surface morphology. Both phthalocyanines showed satisfactory thermal stability (from room temperature to about 300 °C), excellent resistance to acid/alkali solution, and fast photoelectric response properties (order of magnitude of response time, 10−6 s) as tested by TG-DSC and TPV, respectively. It is noted that ethanol was used as the reaction medium and the resulting phthalocyanine crystals can be facilely purified using hot ethanol to dissolve the impurities adsorbed on the surfaces of phthalocyanine crystals. Compared to the traditional methods, no re-crystallization operation was carried out for our method. To the best of our knowledge, this is the first report on the solvothermal synthesis of metal-free phthalocyanine crystals with controllable crystal form adjusted by DBU/DBN in one step. The quadrangular β phthalocyanine and multiply-laminated α phthalocyanine crystals could be synthesized via a solvothermal route by using DBU and DBN, respectively.![]()
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Affiliation(s)
- Dapeng Li
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University Henan 461000 P. R. China
| | - Peng Zhang
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University Henan 461000 P. R. China .,School of Civil Engineering and Communication, North China University of Water Resources and Electric Power Henan 450011 P. R. China
| | - Suxiang Ge
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University Henan 461000 P. R. China
| | - Guofu Sun
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University Henan 461000 P. R. China
| | - Qin He
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University Henan 461000 P. R. China
| | - Wenjun Fa
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, Institute of Surface Micro and Nano Materials, College of Chemical and Materials Engineering, Xuchang University Henan 461000 P. R. China
| | - Yun Li
- Public Security Department, Tianjin Public Security Police Profession College Tianjin 300382 P. R. China
| | - Juntao Ma
- School of Civil Engineering and Communication, North China University of Water Resources and Electric Power Henan 450011 P. R. China
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18
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Abstract
The oxidative coupling of methane (OCM) to C2 hydrocarbons (C2H4 and C2H6) has aroused worldwide interest over the past decade due to the rise of vast new shale gas resources. However, obtaining higher C2 selectivity can be very challenging in a typical OCM process in the presence of easily oxidized products such as C2H4 and C2H6. Regarding this, different types of catalysts have been studied to achieve desirable C2 yields. In this review, we briefly presented three typical types of catalysts such as alkali/alkaline earth metal doped/supported on metal oxide catalysts (mainly for Li doped/supported catalysts), modified transition metal oxide catalysts, and pyrochlore catalysts for OCM and highlighted the features that play key roles in the OCM reactions such as active oxygen species, the mobility of the lattice oxygen and surface alkalinity of the catalysts. In particular, we focused on the pyrochlore (A2B2O7) materials because of their promising properties such as high melting points, thermal stability, surface alkalinity and tunable M-O bonding for OCM reaction.
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19
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An L, Wei C, Lu M, Liu H, Chen Y, Scherer GG, Fisher AC, Xi P, Xu ZJ, Yan CH. Recent Development of Oxygen Evolution Electrocatalysts in Acidic Environment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006328. [PMID: 33768614 DOI: 10.1002/adma.202006328] [Citation(s) in RCA: 152] [Impact Index Per Article: 50.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/22/2020] [Indexed: 05/28/2023]
Abstract
The proton exchange membrane (PEM) water electrolysis is one of the most promising hydrogen production techniques. The oxygen evolution reaction (OER) occurring at the anode dominates the overall efficiency. Developing active and robust electrocatalysts for OER in acid is a longstanding challenge for PEM water electrolyzers. Most catalysts show unsatisfied stability under strong acidic and oxidative conditions. Such a stability challenge also leads to difficulties for a better understanding of mechanisms. This review aims to provide the current progress on understanding of OER mechanisms in acid, analyze the promising strategies to enhance both activity and stability, and summarize the state-of-the-art catalysts for OER in acid. First, the prevailing OER mechanisms are reviewed to establish the physicochemical structure-activity relationships for guiding the design of highly efficient OER electrocatalysts in acid with stable performance. The reported approaches to improve the activity, from macroview to microview, are then discussed. To analyze the problem of instability, the key factors affecting catalyst stability are summarized and the surface reconstruction is discussed. Various noble-metal-based OER catalysts and the current progress of non-noble-metal-based catalysts are reviewed. Finally, the challenges and perspectives for the development of active and robust OER catalysts in acid are discussed.
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Affiliation(s)
- Li An
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Chao Wei
- School of Materials Science and Engineering Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Min Lu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Hanwen Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Yubo Chen
- School of Materials Science and Engineering Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Energy Research Institute@NTU, ERI@N, Interdisciplinary Graduate School, Nanyang Technological University, Singapore, 639798, Singapore
- The Cambridge Centre for Advanced Research and Education in Singapore, 1 CREATE Way, Singapore, 138602, Singapore
| | - Günther G Scherer
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, 758307, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, 758307, Vietnam
| | - Adrian C Fisher
- The Cambridge Centre for Advanced Research and Education in Singapore, 1 CREATE Way, Singapore, 138602, Singapore
- Department of Chemical Engineering, University of Cambridge, Cambridge, CB2 3RA, UK
| | - Pinxian Xi
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
| | - Zhichuan J Xu
- School of Materials Science and Engineering Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Energy Research Institute@NTU, ERI@N, Interdisciplinary Graduate School, Nanyang Technological University, Singapore, 639798, Singapore
- The Cambridge Centre for Advanced Research and Education in Singapore, 1 CREATE Way, Singapore, 138602, Singapore
| | - Chun-Hua Yan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering Peking University, Beijing, 100871, China
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20
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Jiang XQ, Chen SQ, Liu YF, Pan XG, Chen D, Wang SF. Solvothermal Synthesis of Multiple Dihydropyrimidinones at a Time as Inhibitors of Eg5. Molecules 2021; 26:molecules26071925. [PMID: 33808108 PMCID: PMC8037182 DOI: 10.3390/molecules26071925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/16/2021] [Accepted: 03/25/2021] [Indexed: 11/16/2022] Open
Abstract
Solvothermal synthesis of multiple dihydropyrimidinones at a time has been developed in inexpensive and green bio-based solvent lactic acid without any additional catalysts or additives. By this method, thirty new dihydropyrimidinone derivatives were synthesized in two batches and characterized. All of the compounds were screened by Eg5 motor protein ATPase assay, and the positive compounds were tested against the Caco-2 cell line, HeLa cell line, L929 cell line and T24 cell line in vitro. Among them, compound C9 exhibited the best inhibitory activity against motor protein ATPase with an IC50 value of 30.25 μM and significant cytotoxic activity in the micromolar range against the cells above. The Lineweaver–Burk plot revealed that compound C9 was a mixed-type Eg5 inhibitor. A molecular modeling study using the Discovery Studio program was performed, where compound C9 exhibited good binding interaction with Eg5 motor protein ATPase, and this was consistent with the attained experimental results.
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Affiliation(s)
- Xiao-Qiang Jiang
- Department of Pharmacy, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China or (X.-Q.J.); (S.-Q.C.); (Y.-F.L.); (X.-G.P.); (D.C.)
- Dongfang Municipal Bureau of Agriculture and Rural Affairs, Dongfang 572600, China
| | - Shi-Quan Chen
- Department of Pharmacy, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China or (X.-Q.J.); (S.-Q.C.); (Y.-F.L.); (X.-G.P.); (D.C.)
| | - Yan-Fei Liu
- Department of Pharmacy, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China or (X.-Q.J.); (S.-Q.C.); (Y.-F.L.); (X.-G.P.); (D.C.)
| | - Xin-Guang Pan
- Department of Pharmacy, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China or (X.-Q.J.); (S.-Q.C.); (Y.-F.L.); (X.-G.P.); (D.C.)
| | - Dan Chen
- Department of Pharmacy, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China or (X.-Q.J.); (S.-Q.C.); (Y.-F.L.); (X.-G.P.); (D.C.)
| | - Shi-Fan Wang
- Department of Pharmacy, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China or (X.-Q.J.); (S.-Q.C.); (Y.-F.L.); (X.-G.P.); (D.C.)
- Correspondence:
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21
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Abdel Maksoud MIA, Fahim RA, Shalan AE, Abd Elkodous M, Olojede SO, Osman AI, Farrell C, Al-Muhtaseb AH, Awed AS, Ashour AH, Rooney DW. Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review. ENVIRONMENTAL CHEMISTRY LETTERS 2021; 19:375-439. [DOI: 10.1007/s10311-020-01075-w] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 08/06/2020] [Indexed: 09/02/2023]
Abstract
AbstractSupercapacitors are increasingly used for energy conversion and storage systems in sustainable nanotechnologies. Graphite is a conventional electrode utilized in Li-ion-based batteries, yet its specific capacitance of 372 mA h g−1 is not adequate for supercapacitor applications. Interest in supercapacitors is due to their high-energy capacity, storage for a shorter period and longer lifetime. This review compares the following materials used to fabricate supercapacitors: spinel ferrites, e.g., MFe2O4, MMoO4 and MCo2O4 where M denotes a transition metal ion; perovskite oxides; transition metals sulfides; carbon materials; and conducting polymers. The application window of perovskite can be controlled by cations in sublattice sites. Cations increase the specific capacitance because cations possess large orbital valence electrons which grow the oxygen vacancies. Electrodes made of transition metal sulfides, e.g., ZnCo2S4, display a high specific capacitance of 1269 F g−1, which is four times higher than those of transition metals oxides, e.g., Zn–Co ferrite, of 296 F g−1. This is explained by the low charge-transfer resistance and the high ion diffusion rate of transition metals sulfides. Composites made of magnetic oxides or transition metal sulfides with conducting polymers or carbon materials have the highest capacitance activity and cyclic stability. This is attributed to oxygen and sulfur active sites which foster electrolyte penetration during cycling, and, in turn, create new active sites.
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Urbain M, Riporto F, Beauquis S, Monnier V, Marty JC, Galez C, Durand C, Chevolot Y, Dantec RL, Mugnier Y. On the Reaction Pathways and Growth Mechanisms of LiNbO 3 Nanocrystals from the Non-Aqueous Solvothermal Alkoxide Route. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:E154. [PMID: 33435460 PMCID: PMC7828100 DOI: 10.3390/nano11010154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/03/2021] [Accepted: 01/06/2021] [Indexed: 12/31/2022]
Abstract
Phase-pure, highly crystalline sub-50 nm LiNbO3 nanocrystals were prepared from a non-aqueous solvothermal process for 72 h at 230 °C and a commercial precursor solution of mixed lithium niobium ethoxide in its parent alcohol. A systematic variation of the reaction medium composition with the addition of different amounts of co-solvent including butanol, 1,3-propanediol, 1,4-butanediol, and 1,5-pentanediol resulted in the formation of nanocrystals of adjustable mean size and shape anisotropy, as demonstrated from XRD measurements and TEM imaging. Colloidal stability of ethanol- and water-based suspensions was evaluated from dynamic light scattering (DLS)/zeta potential studies and correlated with FTIR data. Thanks to the evolution in the nanocrystal size and shape distribution we observed, as well as to the available literature on the alkoxide chemistry, the reaction pathways and growth mechanisms were finally discussed with a special attention on the monomer formation rate, leading to the nucleation step. The polar, non-perovskite crystalline structure of LiNbO3 was also evidenced to play a major role in the nanocrystal shape anisotropy.
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Affiliation(s)
- Mathias Urbain
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Florian Riporto
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Sandrine Beauquis
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Virginie Monnier
- Institut des Nanotechnologies de Lyon (INL), UMR CNRS 5270, Ecole Centrale de Lyon, Université de Lyon, F-69134 Ecully CEDEX, France; (V.M.); (Y.C.)
| | - Jean-Christophe Marty
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Christine Galez
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Christiane Durand
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Yann Chevolot
- Institut des Nanotechnologies de Lyon (INL), UMR CNRS 5270, Ecole Centrale de Lyon, Université de Lyon, F-69134 Ecully CEDEX, France; (V.M.); (Y.C.)
| | - Ronan Le Dantec
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Yannick Mugnier
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
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23
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Belousov AS, Suleimanov EV, Fukina DG. Pyrochlore oxides as visible light-responsive photocatalysts. NEW J CHEM 2021. [DOI: 10.1039/d1nj04439g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This perspective describes the use of pyrochlore oxides in photocatalysis with focus on the strategies to enhance their activity.
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Affiliation(s)
- Artem S. Belousov
- Lobachevsky State University of Nizhny Novgorod, Research Institute for Chemistry, Gagarin Avenue 23, Nizhny Novgorod, 603950, Russian Federation
| | - Evgeny V. Suleimanov
- Lobachevsky State University of Nizhny Novgorod, Research Institute for Chemistry, Gagarin Avenue 23, Nizhny Novgorod, 603950, Russian Federation
| | - Diana G. Fukina
- Lobachevsky State University of Nizhny Novgorod, Research Institute for Chemistry, Gagarin Avenue 23, Nizhny Novgorod, 603950, Russian Federation
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24
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Bhim A, Mohanty A, Natarajan S. Tuning the Langasite, La 3SbZn 3Si 2O 14, towards white light emission: synthesis, structure, SHG and photoluminescence studies. Dalton Trans 2020; 49:17649-17657. [PMID: 33231229 DOI: 10.1039/d0dt03450a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A series of single-phase color-tunable Langasite, La3SbZn3Si2O14:RE3+ (RE = Eu, Tb, and Tm) phosphors have been prepared and characterized employing X-ray diffraction (XRD), Raman, and photoluminescence (PL) studies. The substituted compounds, La3SbZn3Si2O14:Eu3+, La3SbZn3Si2O14:Tb3+ and La3SbZn3Si2O14:Tm3+ exhibit the characteristic emissions of Eu3+ (red), Tb3+ (green) and Tm3+ (blue), respectively. By carefully adjusting the concentration of Eu3+ ions in the La3SbZn3Si2O14:1% Tm3+, 2% Tb3+, x% Eu3+ system, we achieved a white emission with a reasonable quantum yield. The compounds are found to be SHG (second-harmonic generation) active with the highest values of 3.6 × KDP (potassium dihydrogen phosphate). In addition, the compounds exhibit reasonable dielectric constants with low loss. The present study demonstrates the color tunability of the Langasite family of compounds and establishes it as an adaptable structure.
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Affiliation(s)
- Anupam Bhim
- Framework Solids Laboratory, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560012, India.
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Yu HJ, Hu YY, Zhang F, Yang CK, Zhang HD, Li J, Zhang YY, Wang XP, Liu B, Wei L. Solvothermal synthesis and effects of Fe-doping on KTa 0.63Nb 0.37O 3 nanocrystallines. INORG NANO-MET CHEM 2020. [DOI: 10.1080/24701556.2020.1732416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Hua-Jian Yu
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Yan-Yan Hu
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Fei Zhang
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Cheng-Kai Yang
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Hua-Di Zhang
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Jing Li
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Shandong Provincial Key Laboratory of High Strength Lightweight Metallic Materials, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Yuan-Yuan Zhang
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Xu-Ping Wang
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Bing Liu
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
| | - Lei Wei
- Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
- Advanced Materials Institute, Key Laboratory of Light Conversion Materials and Technology of Shandong Academy of Sciences, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China
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Park J, Cho J. Advances in Understanding Mechanisms of Perovskites and Pyrochlores as Electrocatalysts using In‐Situ X‐ray Absorption Spectroscopy. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Joohyuk Park
- Department of Energy Engineering School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
- Present address: Department of Materials University of Oxford Parks Road Oxford OX1 3PH UK
| | - Jaephil Cho
- Department of Energy Engineering School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
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Ren P, Song M, Lee J, Zhang D, Li D. Nucleation and growth of PbSeO3, Pb3(CO3)2(OH)2, and Se on the PbSe surfaces by decomposing PbSe in water. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.107989] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guo Y, Bae J, Fang Z, Li P, Zhao F, Yu G. Hydrogels and Hydrogel-Derived Materials for Energy and Water Sustainability. Chem Rev 2020; 120:7642-7707. [DOI: 10.1021/acs.chemrev.0c00345] [Citation(s) in RCA: 319] [Impact Index Per Article: 79.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Youhong Guo
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jiwoong Bae
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Zhiwei Fang
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Panpan Li
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Fei Zhao
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Guihua Yu
- Materials Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
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Wang Y, Zhu X. Nanofabrication within unimolecular nanoreactors. NANOSCALE 2020; 12:12698-12711. [PMID: 32525189 DOI: 10.1039/d0nr02674c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nanoparticles (NPs) have been a research focus over the last three decades owing to their unique properties and extensive applications. It is crucial to precisely control the features of NPs including topology, architecture, composition, size, surface and assembly because these features will affect their properties and then applications. Ingenious nanofabrication strategies have been developed to precisely control these features of NPs, especially for templated nanofabrication within predesigned nanoreactors. Compared with conventional nanoreactors (hard templates and supramolecular nanoreactors), unimolecular nanoreactors exhibit (1) covalently stable nanostructures uninfluenced by environmental variations, (2) extensively regulated features of the structure including topology, composition, size, surface and valence due to the rapid development of polymer chemistry, and (3) effective encapsulation of abundant guests with or without strong interaction to achieve the function of loading, delivery and conversion of guests. Thus, unimolecular nanoreactors have shown fascinating prospects as templates for nanofabrication. Various NPs with expected topologies (sphere, rod, tube, branch, and ring), architectures (compact, hollow, core-shell, and necklace-like), compositions (metal, metal oxide, semiconductor, doping, alloy, silica, and composite), sizes (generally 1-100 nm), surface properties (hydrophilic, hydrophobic, reactivity, valence and responsivity) and assemblies (oligomer, chain, and aggregate) can be fabricated easily within reasonably designed unimolecular nanoreactors in a programmable way. In this review, we provide a brief introduction of the properties and types of unimolecular nanoreactors, a condensed summary of representative methodologies of nanofabrication within various unimolecular nanoreactors and a predicted outlook of the potential further developments of this charming nanofabrication approach.
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Affiliation(s)
- Youfu Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
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Park J, Cho J. Advances in Understanding Mechanisms of Perovskites and Pyrochlores as Electrocatalysts using In‐Situ X‐ray Absorption Spectroscopy. Angew Chem Int Ed Engl 2020; 59:15314-15324. [DOI: 10.1002/anie.202000768] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/26/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Joohyuk Park
- Department of Energy Engineering School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
- Present address: Department of Materials University of Oxford Parks Road Oxford OX1 3PH UK
| | - Jaephil Cho
- Department of Energy Engineering School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
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Liu Y, Wang H, Qian L, Zhao X, Yao L, Wang J, Xing X, Mo G, Chen Z, Wu Z. Bismuth-iron-based precursor: preparation, phase composition, and two methods of thermal treatment. RSC Adv 2020; 10:20713-20723. [PMID: 35517760 PMCID: PMC9054302 DOI: 10.1039/d0ra00177e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 05/02/2020] [Indexed: 12/04/2022] Open
Abstract
Bismuth ferrite (BiFeO3) is a promising Bi-based perovskite-type material, which is multiferroic due to the coexistence of anti-ferromagnetism and ferroelectricity. During the preparation of pure BiFeO3 nanoparticles, however, the phase structures and species of bismuth–iron-based precursor (BFOH) were still unclear, and so related precursors were prepared. X-ray diffraction, Raman, Fourier transform infrared, and X-ray absorption near-edge structure techniques were used to probe the phase structure and species of the precursors. It was found that the precursor BFOH is composed of Bi6O6(NO3)4(OH)2·2H2O, Bi6O5(NO3)5(OH)3·3H2O, Fe(OH)3, and α-Bi2O3. Calcination treatment and hydrothermal synthesis were used to prepare the pure BiFeO3 phase from the precursor BFOH. The calcination temperature was optimized as 400 °C for preparation of the pure BiFeO3 phase. Meanwhile, hydrothermal conditions for the synthesis of the pure BiFeO3 phase were also optimized as follows: the reaction solution was the mixture solution of Bi(NO3)3·5H2O and Fe(NO3)3·9H2O with cetyltrimethyl ammonium bromide (CTAB) as the surfactant and KOH as the mineralizer; the hydrothermal synthesis was performed at 180 °C for 48 h; the concentration of KOH should be at least 3 M; and the surfactant CTAB can be used to regulate the morphology of the as-prepared BiFeO3 nanoparticles. From the point of view of the microstructure, BiFeO3 nanoparticles prepared by calcination or hydrothermal methods have no notable differences. A formation mechanism from the precursor BFOH to the BiFeO3 product is proposed. By providing an understanding of the precursors, this work is very helpful in the synthesis of bismuth–iron-based nanoparticles. Preparation and phase composition study of bismuth–iron-based precursor, and its thermal treatment by calcination and hydrothermal processes, which can be used to control the synthesis of pure BiFeO3.![]()
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Affiliation(s)
- Yunpeng Liu
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982.,University of Chinese Academy of Sciences, Chinese Academy of Sciences Beijing 100049 China
| | - Hao Wang
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982.,University of Chinese Academy of Sciences, Chinese Academy of Sciences Beijing 100049 China
| | - Lixiong Qian
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982.,University of Chinese Academy of Sciences, Chinese Academy of Sciences Beijing 100049 China
| | - Xiaoyi Zhao
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982.,University of Chinese Academy of Sciences, Chinese Academy of Sciences Beijing 100049 China
| | - Lei Yao
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982
| | - Jiayi Wang
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982
| | - Xueqing Xing
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982
| | - Guang Mo
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982
| | - Zhongjun Chen
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982
| | - Zhonghua Wu
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China +86-10-88235982.,University of Chinese Academy of Sciences, Chinese Academy of Sciences Beijing 100049 China
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32
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Walton RI. Perovskite Oxides Prepared by Hydrothermal and Solvothermal Synthesis: A Review of Crystallisation, Chemistry, and Compositions. Chemistry 2020; 26:9041-9069. [PMID: 32267980 DOI: 10.1002/chem.202000707] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Indexed: 11/07/2022]
Abstract
Perovskite oxides with general composition ABO3 are a large group of inorganic materials that can contain a variety of cations from all parts of the Periodic Table and that have diverse properties of application in fields ranging from electronics, energy storage to photocatalysis. Solvothermal synthesis routes to these materials have become increasingly investigated in the past decade as a means of direct crystallisation of the solids from solution. These methods have significant advantages leading to adjustment of crystal form from the nanoscale to the micron-scale, the isolation of compositions not possible using conventional solid-state synthesis and in addition may lead to scalable processes for producing materials at moderate temperatures. These aspects are reviewed, with examples taken from the past decade's literature on the solvothermal synthesis of perovskites with a systematic survey of B-site cations, from transition metals in Groups 4-8 and main group elements in Groups 13, 14 and 15, to solid solutions and heterostructures. As well as hydrothermal reactions, the use of various solvents and solution additives are discussed and some trends identified, along with prospects for developing control and predictability in the crystallisation of complex oxide materials.
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Affiliation(s)
- Richard I Walton
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
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33
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Mariappan RP, Liu C, Cao G, Manimuthu RP. Tailoring SPEEK/SPVdF- co-HFP/La 2Zr 2O 7 Ternary Composite Membrane for Cation Exchange Membrane Fuel Cells. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06922] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | - Chaofeng Liu
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195-2120, United States
| | - Guozhong Cao
- Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195-2120, United States
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Feng Q, Zou J, Wang Y, Zhao Z, Williams MC, Li H, Wang H. Influence of Surface Oxygen Vacancies and Ruthenium Valence State on the Catalysis of Pyrochlore Oxides. ACS APPLIED MATERIALS & INTERFACES 2020; 12:4520-4530. [PMID: 31895533 DOI: 10.1021/acsami.9b19352] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Proton exchange membrane (PEM) water electrolysis is a promising energy storage solution by electrochemically splitting water into hydrogen fuel and oxygen. However, the sluggish kinetics, high operating potential, and corrosive acidic environment during the oxygen evolution reaction (OER) require the use of scarce and costly Ir-based oxides, tremendously hampering its large-scale commercialization. Hence, developing active and stable anode catalysts with reduced precious-metal usage is desperately essential. For the first time, we report a group of Y2-xBaxRu2O7 pyrochlore oxides and employ them in acid OER and PEM electrolyzers. We reveal the mechanism for the promoted OER performance of Ba-doped Y2Ru2O7 in which partially replacing Y3+ by Ba2+ in Y2Ru2O7 greatly facilitates the hole-doping effect, which generates massive oxygen vacancy and multivalence of Ru5+/Ru4+, thus boosting the OER performance of Y2-xBaxRu2O7. This work provides an effective method and paradigm for improving the electrocatalytic property of pyrochlore oxides.
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Affiliation(s)
- Qi Feng
- School of Materials Science and Engineering , Harbin Institute of Technology , Harbin 150001 , China
- Department of Materials Science and Engineering, Shenzhen Key Laboratory of Hydrogen Energy , Southern University of Science and Technology , Shenzhen 518055 , Guangdong , China
| | - Jiexin Zou
- Department of Mechanical and Energy Engineering , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Yajun Wang
- Department of Mechanical and Energy Engineering , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Zhiliang Zhao
- Department of Materials Science and Engineering, Shenzhen Key Laboratory of Hydrogen Energy , Southern University of Science and Technology , Shenzhen 518055 , Guangdong , China
| | - Mark C Williams
- Department of Mechanical and Energy Engineering , Southern University of Science and Technology , Shenzhen 518055 , China
| | - Hui Li
- School of Materials Science and Engineering , Harbin Institute of Technology , Harbin 150001 , China
- Department of Materials Science and Engineering, Shenzhen Key Laboratory of Hydrogen Energy , Southern University of Science and Technology , Shenzhen 518055 , Guangdong , China
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power , Shenzhen 518055 , China
| | - Haijiang Wang
- Department of Mechanical and Energy Engineering , Southern University of Science and Technology , Shenzhen 518055 , China
- Guangdong Provincial Key Laboratory of Energy Materials for Electric Power , Shenzhen 518055 , China
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35
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Diodati S, Walton RI, Mascotto S, Gross S. Low-temperature wet chemistry synthetic approaches towards ferrites. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00294a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Solution chemistry allows the crystallisation of range of iron oxides, including MFe2O4 spinels, MFeO3 perovskites and hexaferrites, such as BaFe12O19, with nanoscale crystallinity and properties suitable for fields such as catalysis and electronics.
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Affiliation(s)
- Stefano Diodati
- Dipartimento di Scienze Chimiche – Università degli Studi di Padova
- 35131 Padova
- Italy
| | | | - Simone Mascotto
- Institut für Anorganische und Angewandte Chemie
- Universität Hamburg
- 20146 Hamburg
- Germany
| | - Silvia Gross
- Dipartimento di Scienze Chimiche – Università degli Studi di Padova
- 35131 Padova
- Italy
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36
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Bewana S, Ndolomingo MJ, Carleschi E, Doyle BP, Meijboom R, Bingwa N. Inorganic Perovskite-Induced Synergy on Highly Selective Pd-Catalyzed Hydrogenation of Cinnamaldehyde. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32994-33005. [PMID: 31423771 DOI: 10.1021/acsami.9b10820] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The transformation of various organic molecules into value-added chemicals has been driven by the success in development of highly active catalytic systems. Heterogeneous catalysts have found use in many industrial processes by virtue of their ease of separation and high activities in various reactions. However, many processes employing heterogeneous catalysts in the transformation of organic molecules suffer significantly when it comes to product selectivity. Herein, we report on the synthesis of highly selective palladium nanoparticle (Pd NP)-containing catalysts. The heterogeneous catalysts reported herein consist of active mixed-metal oxides, in the form of perovskites as catalysts, and as catalytic supports for Pd NPs. The activity of pure perovskites when applied as catalysts in the hydrogenation of cinnamaldehyde is 3 factors lower compared with Pd NPs immobilized on them. However, considering the fact that perovskites achieved percentage conversions between 18 and 25% in a short period of time makes them perfect candidates to replace platinum group metals in the future. In addition to being earmarked as the future of catalysis, perovskites induced a synergistic effect on the conversion of the substrate compared to when Pd NPs are immobilized on the silica support. Furthermore, these catalysts are 100% selective to hydrocinnamaldehyde and stable for up to five catalytic cycles. With regard to reusability of the catalysts, Pd/LaFeO3 was used as a benchmark catalyst and revealed the need for surface restructuring of the catalyst for optimum activity.
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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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Jeyavani V, Pawar S, Dadwal A, Joy PA, Mukherjee SP. Size‐controlled Cobalt Ferrite Nanocrystals: Magnetically separable Reusable Nanocatalysts for Selective Oxidation of Styrene. ChemistrySelect 2019. [DOI: 10.1002/slct.201900714] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Vijayakrishnan Jeyavani
- Physical & Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
| | - Sayali Pawar
- Physical & Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
| | - Arun Dadwal
- Physical & Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
| | - Pattayil Alias Joy
- Physical & Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
| | - Shatabdi Porel Mukherjee
- Physical & Materials Chemistry DivisionCSIR-National Chemical Laboratory Dr. Homi Bhabha Road, Pashan Pune 411008 India
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Probing the reactivity and structure relationship of Ln2Sn2O7 (Ln=La, Pr, Sm and Y) pyrochlore catalysts for CO oxidation. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.05.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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BaTi0.8B0.2O3 (B = Mn, Fe, Co, Cu) LNT Catalysts: Effect of Partial Ti Substitution on NOx Storage Capacity. Catalysts 2019. [DOI: 10.3390/catal9040365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The effect of partial Ti substitution by Mn, Fe, Co, or Cu on the NOx storage capacity (NSC) of a BaTi0.8B0.2O3 lean NOx trap (LNT) catalyst has been analyzed. The BaTi0.8B0.2O3 catalysts were prepared using the Pechini’s sol–gel method for aqueous media. The characterization of the catalysts (BET, ICP-OES, XRD and XPS) reveals that: i) the partial substitution of Ti by Mn, Co, or Fe changes the perovskite structure from tetragonal to cubic, whilst Cu distorts the raw tetragonal structure and promotes the segregation of Ba2TiO4 (which is an active phase for NOx storage) as a minority phase and ii) the amount of oxygen vacancies increases after partial Ti substitution, with the BaTi0.8Cu0.2O3 catalyst featuring the largest amount. The BaTi0.8Cu0.2O3 catalyst shows the highest NSC at 400 °C, based on NOx storage cyclic tests, which is within the range of highly active noble metal-based catalysts.
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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: 0] [Impact Index Per Article: 0] [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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42
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Diodati S, Hennemann J, Fresno F, Gialanella S, Dolcet P, Lavrenčič Štangar U, Smarsly BM, Gross S. Easy and Green Route towards Nanostructured ZnO as an Active Sensing Material with Unexpected H
2
S Dosimeter‐Type Behaviour. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801334] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stefano Diodati
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via Marzolo 1 35131‐ Padova and INSTM, UdR di Padova Italy
| | - Jörg Hennemann
- Physikalisch‐Chemisches Institut Justus‐Liebig‐Universität Gießen Heinrich‐Buff‐Ring 17 35392 Giessen Germany
- Institut für Angewandte Physik Justus‐Liebig‐Universität Gießen Heinrich‐Buff‐Ring 16 35392 Giessen Germany
| | - Fernando Fresno
- Photoactivated Processes Unit IMDEA Energy Institute Avda. Ramón de la Sagra 3 28935 Móstoles, Madrid Spain
- Laboratory for Environmental and Life Sciences University of Nova Gorica Vipavska 13 5000 Nova Gorica Slovenia
| | - Stefano Gialanella
- Dipartimento di Ingegneria Industriale Università degli Studi di Trento Via Sommarive 9, I ‐38123 Trento Italy
| | - Paolo Dolcet
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via Marzolo 1 35131‐ Padova and INSTM, UdR di Padova Italy
- Institut für Technische Chemie und Polymerchemie (ITCP) Karlsruhe Institute of Technology (KIT) Engesserstr. 20 76133 Karlsruhe Germany
| | - Urška Lavrenčič Štangar
- Laboratory for Environmental and Life Sciences University of Nova Gorica Vipavska 13 5000 Nova Gorica Slovenia
- Faculty of Chemistry and Chemical Technology University of Ljubljana Vecna pot 113 1000 Ljubljana Slovenia
| | - Bernd M. Smarsly
- Physikalisch‐Chemisches Institut Justus‐Liebig‐Universität Gießen Heinrich‐Buff‐Ring 17 35392 Giessen Germany
| | - Silvia Gross
- Dipartimento di Scienze Chimiche Università degli Studi di Padova Via Marzolo 1 35131‐ Padova and INSTM, UdR di Padova Italy
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43
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Xu C, Ravi Anusuyadevi P, Aymonier C, Luque R, Marre S. Nanostructured materials for photocatalysis. Chem Soc Rev 2019; 48:3868-3902. [DOI: 10.1039/c9cs00102f] [Citation(s) in RCA: 534] [Impact Index Per Article: 106.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Photocatalysis is a green technology which converts abundantly available photonic energy into useful chemical energy.
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Affiliation(s)
- Chunping Xu
- School of Food and Biological Engineering
- Zhengzhou University of Light Industry
- Zhengzhou
- P. R. China
| | | | | | - Rafael Luque
- Departamento de Quimica Organica
- Universidad de Cordoba
- Campus de Rabanales
- Cordoba
- Spain
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44
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Saputra L, Sato T, Kojima T, Hara T, Ichikuni N, Shimazu S. Preparation of a Highly Stable Pd-Perovskite Catalyst for Suzuki Couplings via a Low-Temperature Hydrothermal Treatment. ACS OMEGA 2018; 3:17528-17531. [PMID: 31458357 PMCID: PMC6644052 DOI: 10.1021/acsomega.8b02622] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/04/2018] [Indexed: 06/10/2023]
Abstract
Pd-perovskite (Pd-STO, STO = SrTiO3) was synthesized by a relatively low-temperature (373 K) hydrothermal method without calcination. The morphology of the Pd-STO could be controlled by adjusting the H2O/NH3 ratio during the fabrication of the amorphous titania. The Pd-STO catalyst showed better durability for Suzuki couplings than did Pd-impregnated catalysts on conventional supports.
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Affiliation(s)
- Leo Saputra
- Department
of Applied Chemistry and Biotechnology, Graduate School of Science
and Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
- Department
of Chemistry, Faculty of Mathematics and Natural Sciences, Riau University, Pekanbaru 28293, Indonesia
| | - Takahiro Sato
- Department
of Applied Chemistry and Biotechnology, Graduate School of Science
and Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Takashi Kojima
- Department
of Applied Chemistry and Biotechnology, Graduate School of Science
and Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Takayoshi Hara
- Department
of Applied Chemistry and Biotechnology, Graduate School of Science
and Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Nobuyuki Ichikuni
- Department
of Applied Chemistry and Biotechnology, Graduate School of Science
and Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Shogo Shimazu
- Department
of Applied Chemistry and Biotechnology, Graduate School of Science
and Engineering, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
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45
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Cordes N, Bräuniger T, Schnick W. Ammonothermal Synthesis of EAM
O2
N (EA
= Sr, Ba; M
= Nb, Ta) Perovskites and 14
N Solid-State NMR Spectroscopic Investigations of AM
(O,N)3
(A
= Ca, Sr, Ba, La). Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800827] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Niklas Cordes
- Department of Chemistry; University of Munich (LMU); Butenandtstrasse 5-13 81388 Munich Germany
| | - Thomas Bräuniger
- Department of Chemistry; University of Munich (LMU); Butenandtstrasse 5-13 81388 Munich Germany
| | - Wolfgang Schnick
- Department of Chemistry; University of Munich (LMU); Butenandtstrasse 5-13 81388 Munich Germany
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46
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Kim S, Lee S, Kim J, Shin J, Kim G. Self-Transforming Configuration Based on Atmospheric-Adaptive Materials for Solid Oxide Cells. Sci Rep 2018; 8:17149. [PMID: 30464228 PMCID: PMC6249295 DOI: 10.1038/s41598-018-35659-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/05/2018] [Indexed: 12/03/2022] Open
Abstract
Solid oxide cells (SOC) with a symmetrical configuration have been focused due to the practical benefits of such configurations, such as minimized compatibility issues, a simple fabrication process and reduced cost compared to SOCs with the asymmetrical configuration. However, the performance of SOCs using a single type of electrode material (symmetrical configuration) is lower than the performance of those using the dissimilar electrode materials (asymmetrical configuration). Therefore, to achieve a high-performance cell, we design a 'self-transforming cell' with the asymmetric configuration using only materials of the single type, one based on atmospheric adaptive materials. Atmospheric-adaptive perovskite Pr0.5Ba0.5Mn0.85Co0.15O3-δ (PBMCo) was used for the so-called self-transforming cell electrodes, which changed to layered perovskite and metal in the fuel atmosphere and retained its original structure in the air atmosphere. In fuel cell mods, the self-transforming cell shows excellent electrochemical performance of 1.10 W cm-2 at 800 °C and good stability for 100 h without any catalyst. In electrolysis mode, the moderate current densities of -0.42 A cm-2 for 3 vol.% H2O and -0.62 A cm-2 for 10 vol.% H2O, respectively, were observed at a cell voltage of 1.3 V at 800 °C. In the reversible cycling test, the transforming cell maintains the constant voltages for 30 h at +/- 0.2 A cm-2 under 10 vol. % H2O.
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Affiliation(s)
- Seona Kim
- Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST) Ulsan, Ulsan, 44919, Republic of Korea
| | - Seungtae Lee
- Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST) Ulsan, Ulsan, 44919, Republic of Korea
| | - Junyoung Kim
- Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST) Ulsan, Ulsan, 44919, Republic of Korea
| | - Jeeyoung Shin
- Division of Mechanical Systems Engineering, Sookmyung Women's University Seoul, Seoul, 04310, Republic of Korea.
- Institute of Advanced Materials and Systems, Sookmyung Women's University Seoul, Seoul, 04310, Republic of Korea.
| | - Guntae Kim
- Department of Energy Engineering, Ulsan National Institute of Science and Technology (UNIST) Ulsan, Ulsan, 44919, Republic of Korea.
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47
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McMaster SA, Ram R, Faris N, Pownceby MI. Radionuclide disposal using the pyrochlore supergroup of minerals as a host matrix-A review. JOURNAL OF HAZARDOUS MATERIALS 2018; 360:257-269. [PMID: 30121356 DOI: 10.1016/j.jhazmat.2018.08.037] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 06/08/2023]
Abstract
Since the first large scale commercial nuclear power plant became operational in 1958, the nuclear power industry has been faced with the growing problem of disposal of radionuclides produced from nuclear fission. The current global production of high level nuclear waste is approximately 10,000 metric tons p.a., consisting predominantly of uranium, plutonium, actinides and other minor radionuclides. Developing a safe and cost-effective method for long term storage and disposal of nuclear waste is a key issue of concern to the nuclear power industry. A promising approach to radionuclide disposal is incorporation of the nuclear waste into refractory oxide host minerals or mineral matrices. This technique offers lower leaching rates when compared to the commonly used glass-based vitrification approaches. The refractory pyrochlore supergroup of minerals are particularly attractive for this purpose as they can incorporate considerable amounts of the radionuclides: 93Zr, 133Ba, 135Cs, Th, U, 238Pu, and 244Cm, while demonstrating very low leachability. This review examines the structural, compositional and chemical properties of radionuclide-containing pyrochlore supergroup minerals. Compiled leaching data for radionuclides hosted in pyrochlores demonstrates that these materials offer a high degree of aqueous durability making them strong candidates for radionuclide disposal, offering a viable storage alternative to traditional vitrification methods.
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Affiliation(s)
- Scott A McMaster
- Environmental Research Institute of the Supervising Scientist (ERISS), GPO Box 461, Darwin, NT 0801, Australia.
| | - Rahul Ram
- School of Earth, Atmosphere and Environment, Monash University, 9 Rainforest Walk, Clayton, VIC 3800, Australia
| | - Nebeal Faris
- School of Science, RMIT University, GPO Box 2476, Melbourne, VIC 3001, Australia
| | - Mark I Pownceby
- CSIRO Mineral Resources, Private Bag 10, Clayton South, VIC 3169, Australia
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48
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A new stacking variant of Na2Pt(OH)6. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2018. [DOI: 10.1515/znb-2018-0125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A new stacking variant of sodium hexa-hydroxo platinate(IV), Na2Pt(OH)6, was synthesized and its structure elucidated through X-ray diffraction. The new polymorph was prepared by direct reaction of PtO2 with an excess of NaOH solution applying elevated oxygen pressure at 300°C. The structure consists of layers of edge sharing Pt(OH)6 and Na(OH)6 octahedra. These layers are separated by an edge-to-edge distance of ~2.4 Å. The packing of the hydroxide ions corresponds to the hcp sequence, the title compound thus may be regarded a cation ordered variant of the Brucite structure type. During heating above T~300°C all constitutional water is released, and anhydrous Na2PtO3 remains as the solid residue.
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49
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Kim J, Shih PC, Qin Y, Al-Bardan Z, Sun CJ, Yang H. A Porous Pyrochlore Y 2 [Ru 1.6 Y 0.4 ]O 7-δ Electrocatalyst for Enhanced Performance towards the Oxygen Evolution Reaction in Acidic Media. Angew Chem Int Ed Engl 2018; 57:13877-13881. [PMID: 30160366 DOI: 10.1002/anie.201808825] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Indexed: 01/20/2023]
Abstract
A robust porous structure is often needed for practical applications in electrochemical devices, such as fuel cells, batteries, and electrolyzers. While templating approach is useful for the preparation of porous materials in general, it is not effective for the synthesis of oxide-based electrocatalysts owing to the chemical instability of disordered porous materials thus created. Now the synthesis of phase-pure porous yttrium ruthenate pyrochlore oxide using an unconventional porogen of perchloric acid is presented. The lattice oxygen defects are formed by the mixed-valence state of Ru4+/5+ through the partial substitution of Ru4+ with Y3+ cations, leading to the formation of mixed B-site Y2 [Ru1.6 Y0.4 ]O7-δ . This porous Y2 [Ru1.6 Y0.4 ]O7-δ electrocatalyst exhibits a turnover frequency (TOF) of 560 s-1 (at 1.5 V versus RHE) for the oxygen evolution reaction, which is two orders of magnitude higher than that of the RuO2 reference catalyst (5.41 s-1 ).
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Affiliation(s)
- Jaemin Kim
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Pei-Chieh Shih
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Yao Qin
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA.,The Institute for Advanced Materials & Nano Biomedicine, Tongji University, 67 Chifeng Rd., Shanghai, 200092, P. R. China
| | - Zaid Al-Bardan
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Cheng-Jun Sun
- X-ray Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA
| | - Hong Yang
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
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50
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Kim J, Shih P, Qin Y, Al‐Bardan Z, Sun C, Yang H. A Porous Pyrochlore Y
2
[Ru
1.6
Y
0.4
]O
7–
δ
Electrocatalyst for Enhanced Performance towards the Oxygen Evolution Reaction in Acidic Media. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808825] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jaemin Kim
- Department of Chemical and Biomolecular EngineeringUniversity of Illinois at Urbana-Champaign 600 South Mathews Avenue Urbana IL 61801 USA
| | - Pei‐Chieh Shih
- Department of Chemical and Biomolecular EngineeringUniversity of Illinois at Urbana-Champaign 600 South Mathews Avenue Urbana IL 61801 USA
| | - Yao Qin
- Department of Chemical and Biomolecular EngineeringUniversity of Illinois at Urbana-Champaign 600 South Mathews Avenue Urbana IL 61801 USA
- The Institute for Advanced Materials & Nano BiomedicineTongji University 67 Chifeng Rd. Shanghai 200092 P. R. China
| | - Zaid Al‐Bardan
- Department of Chemical and Biomolecular EngineeringUniversity of Illinois at Urbana-Champaign 600 South Mathews Avenue Urbana IL 61801 USA
| | - Cheng‐Jun Sun
- X-ray Science DivisionArgonne National Laboratory 9700 South Cass Avenue Argonne IL 60439 USA
| | - Hong Yang
- Department of Chemical and Biomolecular EngineeringUniversity of Illinois at Urbana-Champaign 600 South Mathews Avenue Urbana IL 61801 USA
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