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Yan X, Guan Y, Fang Z. The interactive force between fat, oil, and grease (FOG) deposits and the effect of food waste disposers on kitchen drainage systems. WASTE MANAGEMENT (NEW YORK, N.Y.) 2024; 180:85-95. [PMID: 38547759 DOI: 10.1016/j.wasman.2024.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/29/2024] [Accepted: 03/12/2024] [Indexed: 04/14/2024]
Abstract
Food waste disposers (FWDs) streamline kitchen waste management and facilitate waste classification, whether they would increase the potential of blockage in kitchen drainage system is still unknown. This study conducted a theoretical analysis of the interactive forces between fat, oil, and grease (FOG) deposits and their aggregation on pipe walls. The study involved grading food waste particles processed by FWDs using sieving and weighing techniques to determine the mean weight diameter (MWD) of various aggregations. A full-scale experimental system, implemented in a 60-m high test tower, simulated blockages in horizontal pipes of high-rise buildings. The effect of pipeline materials and particle sizes on blockage were examined by measuring the adhesion of deposits on horizontal pipes. Energy dispersive spectrometer (EDS) analysis suggested that liquid bridge force is a primary factor in aggregate formation. Hand-cut particles formed aggregates with the highest MWD value. Particle size analysis revealed that sizes ranging from 2.36 to 4.75 mm, 1.18-2.36 mm, and 0.60-1.18 mm constituted over 80 % of particles ground by FWDs, with an average size of 2.16 mm. Results of full-scale experiment indicate particle diameters, friction coefficients and lipophilic coefficient significantly affected the propensity of these aggregates to adhere to pipes. Notably, particles processed by FWDs tended to cause blockages more frequently than hand-cut particles. These findings elucidate the deposition mechanism of FOG deposits and offer strategies to reduce blockages in kitchen drainage systems, such as reducing current grinding particle size by 18 % to 1.77 mm or selecting pipes like cast iron and high-density polyethylene.
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Affiliation(s)
- Xin Yan
- School of Environmental and Municipal Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450000, Henan Province, China
| | - Yuxi Guan
- Shenzhen Water and Environment Group co., LTD, Shenzhen 518031, Guangdong Province, China
| | - Zheng Fang
- School of Civil Engineering, Wuhan University, Wuhan 430072, Hubei Province, China.
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2
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Aykut S, Ük N, Coşkun İY, Keskin SŞ, Nar I, Trabzon L, Ünlü C. Modulating spectral response of raw photosynthetic pigments via ternary cadmium chalcogenide quantum dots: simultaneous enhancement at green spectrum and inhibition at UV region. PHOTOSYNTHESIS RESEARCH 2024; 160:1-16. [PMID: 38407778 PMCID: PMC11006769 DOI: 10.1007/s11120-024-01085-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 02/06/2024] [Indexed: 02/27/2024]
Abstract
Photosynthesis relies on the absorption of sunlight by photosynthetic pigments (PPs) such as chlorophylls and carotenoids. While these pigments are outstanding at harvesting light, their natural structure restricts their ability to harvest light at specific wavelengths. In this study, Oleic acid-capped CdSeS and CdTeS ternary quantum dots (QDs) were synthesized using a novel two-phase synthesis method. Then, these QDs were used to interact with raw PPs, a mixture of chlorophylls and carotenoids isolated from spinach. Our findings revealed the following: (1) Interacting QDs with raw PPs effectively inhibited the chlorophyll fluorescence of the pigments upon excitation in UV light region (250-400 nm) without causing any damage to their structure. (2) By forming an interaction with QDs, the chlorophyll fluorescence of raw PPs could be induced through excitation with green-light spectrum. (3) The composition of the QDs played a fundamental role in their interaction with PPs. Our study demonstrated that the photophysical properties of isolated PPs could be modified by using cadmium-based QDs by preserving the structure of the pigments themselves.
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Affiliation(s)
- Sümeyye Aykut
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Nida Ük
- Polymer Science and Technology, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - İbrahim Yağız Coşkun
- Department of Nanoscience and Nanoengineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Sultan Şahin Keskin
- Department of Nanoscience and Nanoengineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
- MEMS Research Center, Istanbul Technical University, Istanbul, Turkey
| | - Ilgın Nar
- Department of Nanoscience and Nanoengineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
- Istanbul Technical University Nanotechnology Research and Application Center (ITUNano), Istanbul, Turkey
| | - Levent Trabzon
- MEMS Research Center, Istanbul Technical University, Istanbul, Turkey
- Faculty of Mechanical Engineering, Istanbul Technical University, Istanbul, Turkey
| | - Caner Ünlü
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.
- Polymer Science and Technology, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey.
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3
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Winiger J, Keller K, Gjini P, Moor D, Baumann M, Chelladurai D, Kohli M, Schwanninger R, Fedoryshyn Y, Tommaso C, Koch U, Caruntu G, Leuthold J. Measuring dielectric and electro-optic responses of thin films using plasmonic devices. OPTICS EXPRESS 2024; 32:4511-4524. [PMID: 38297651 DOI: 10.1364/oe.511747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 12/29/2023] [Indexed: 02/02/2024]
Abstract
This paper introduces a simple method for the measurement of the relative permittivity and the Pockels coefficient of electro-optic (EO) materials in a waveguide up to sub-THz frequencies. By miniaturizing the device and making use of plasmonics, the complexities of traditional methods are mitigated. This work elaborates the fabrication tolerance and simplicity of the method, and highlights its applicability to various materials, substrates and configurations. The method is showcased using drop-casted perovskite barium titanate (BaTiO3, BTO) nano-particle thin-films and it has previously been used to measure epitaxial thin film BTO. In this work we show the effective relative permittivity of drop casted BTO to be εeff ∼ 30 at 200 MHz, dropping to ∼ 18 at 67 GHz and similarly, the effective Pockels coefficient was found to be reff ∼ 16 at 350 MHz and ∼ 8 at 70 GHz. These values are a factor > 50 below the values found for thin film BTO. Yet, the fact that the method can be applied to such different samples and Pockels strengths gives testimony to its versatility and sensitivity.
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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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Luo K, Zhu X, Kim YR. Short-chain glucan self-assembly for green synthesis of functional biomaterials: Mechanism, synthesis, and microstructural control. Carbohydr Polym 2023; 318:121140. [PMID: 37479447 DOI: 10.1016/j.carbpol.2023.121140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 07/23/2023]
Abstract
Short-chain glucan (SCG) is a linear homopolymer containing 10 to 50 glucose units linked with α(1,4) glycosidic bonds. With its abundant, low-cost, nontoxic, biodegradable/biocompatible nature, self-assembled SCG particles (SSC) have emerged as functional biomaterials, which have recently attracted tremendous attentions in various fields. SCG self-assembly occurs through the spontaneous association of molecules under equilibrium conditions into stable and structurally well-defined nanoscale or micrometer-scale aggregates, which is governed by various intermolecular non-covalent interactions, including hydrogen-bonding, electrostatic, hydrophobic, and van der Waals. With precise and effective control of the self-assembly process of SSC, its structural modulation and function integration can be expected. Thus, we convinced that SCG self-assembly could provide an effective means of developing starch-based functional biomaterials with beneficial health properties and wide application in food industries. In this review, we provide an overview of recent advances in the green approach for the self-assembly of SSC, as well as the influence of thermodynamic and kinetic factors on its morphology and physicochemical properties. We highlight recent contributions to developing strategies for the construction of SSC with increasing complexity and functionality that are suitable for a variety of food applications. Finally, we briefly outline our perspectives and discuss the challenges in the field.
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Affiliation(s)
- Ke Luo
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China.
| | - Xiaoning Zhu
- College of Food Science and Engineering, Ocean University of China, Qingdao, Shandong Province 266003, China
| | - Young-Rok Kim
- Institute of Life Science and Resources & Department of Food Science and Biotechnology, Kyung Hee University, Yongin 17104, South Korea.
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6
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Liu X, Lee EC. Advancements in Perovskite Nanocrystal Stability Enhancement: A Comprehensive Review. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111707. [PMID: 37299610 DOI: 10.3390/nano13111707] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 06/12/2023]
Abstract
Over the past decade, perovskite technology has been increasingly applied in solar cells, nanocrystals, and light-emitting diodes (LEDs). Perovskite nanocrystals (PNCs) have attracted significant interest in the field of optoelectronics owing to their exceptional optoelectronic properties. Compared with other common nanocrystal materials, perovskite nanomaterials have many advantages, such as high absorption coefficients and tunable bandgaps. Owing to their rapid development in efficiency and huge potential, perovskite materials are considered the future of photovoltaics. Among different types of PNCs, CsPbBr3 perovskites exhibit several advantages. CsPbBr3 nanocrystals offer a combination of enhanced stability, high photoluminescence quantum yield, narrow emission bandwidth, tunable bandgap, and ease of synthesis, which distinguish them from other PNCs, and make them suitable for various applications in optoelectronics and photonics. However, PNCs also have some shortcomings: they are highly susceptible to degradation caused by environmental factors, such as moisture, oxygen, and light, which limits their long-term performance and hinders their practical applications. Recently, researchers have focused on improving the stability of PNCs, starting with the synthesis of nanocrystals and optimizing (i) the external encapsulation of crystals, (ii) ligands used for the separation and purification of nanocrystals, and (iii) initial synthesis methods or material doping. In this review, we discuss in detail the factors leading to instability in PNCs, introduce stability enhancement methods for mainly inorganic PNCs mentioned above, and provide a summary of these approaches.
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Affiliation(s)
- Xuewen Liu
- Department of Nano Science and Technology, Graduate School, Gachon University, Seongnam-si 13120, Republic of Korea
| | - Eun-Cheol Lee
- Department of Nano Science and Technology, Graduate School, Gachon University, Seongnam-si 13120, Republic of Korea
- Department of Physics, Gachon University, Seongnam-si 13120, Republic of Korea
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7
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Yu Q, Shi W, Li S, Liu H, Zhang J. Emerging Advancements in Piezoelectric Nanomaterials for Dynamic Tumor Therapy. Molecules 2023; 28:molecules28073170. [PMID: 37049933 PMCID: PMC10095813 DOI: 10.3390/molecules28073170] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 04/05/2023] Open
Abstract
Cancer is one of the deadliest diseases, having spurred researchers to explore effective therapeutic strategies for several centuries. Although efficacious, conventional chemotherapy usually introduces various side effects, such as cytotoxicity or multi−drug resistance. In recent decades, nanomaterials, possessing unique physical and chemical properties, have been used for the treatment of a wide range of cancers. Dynamic therapies, which can kill target cells using reactive oxygen species (ROS), are promising for tumor treatment, as they overcome the drawbacks of chemotherapy methods. Piezoelectric nanomaterials, featuring a unique property to convert ultrasound vibration energy into electrical energy, have also attracted increasing attention in biomedical research, as the piezoelectric effect can drive chemical reactions to generate ROS, leading to the newly emerging technique of ultrasound−driven tumor therapy. Piezoelectric materials are expected to bring a better solution for efficient and safe cancer treatment, as well as patient pain relief. In this review article, we highlight the most recent achievements of piezoelectric biomaterials for tumor therapy, including the mechanism of piezoelectric catalysis, conventional piezoelectric materials, modified piezoelectric materials and multifunctional piezoelectric materials for tumor treatment.
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Affiliation(s)
- Qian Yu
- School of Life Science, Jiangsu University, Zhenjiang 212013, China
| | - Wenhui Shi
- School of Life Science, Jiangsu University, Zhenjiang 212013, China
| | - Shun Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Hong Liu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jianming Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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8
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Takatsuji Y, Matsumoto R, Sazaki G, Oaki Y, Imai H. Construction of Millimeter-Wide Monolayers of Ordered Nanocubes as a Stain of "Wineglass Tears" Driven by the Marangoni Flow. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:4091-4099. [PMID: 36897782 DOI: 10.1021/acs.langmuir.2c03382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We constructed millimeter-wide monolayers consisting of tetragonally ordered BaTiO3 (BT) nanocubes through the liquid film formation caused by the Marangoni flow in a toluene-hexane binary liquid containing oleic acid. A thin liquid film containing BT nanocubes was overspread on a standing silicon substrate through the condensation of toluene at the advancing front after the preferential evaporation of hexane. Then, the oscillatory droplet formation like "wineglass tears" occurred on the substrate. Finally, two-dimensionally ordered BT nanocubes were observed as a stain of "wineglass tears" on the substrate after the liquid film receded through evaporation. The presence of a thin liquid film in the binary system is essential for the production of millimeter-wide monolayers on the substrate because multilayer deposition occurs without the formation of a thin liquid film in monocomponent systems. We improved the regularity of the ordered arrays of nanocubes by adjusting the liquid component and evaporation conditions.
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Affiliation(s)
- Yohei Takatsuji
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Riho Matsumoto
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Gen Sazaki
- Institute of Low Temperature Science, Hokkaido University, N19-W8, Kita-ku, Sapporo 060-0819, Japan
| | - Yuya Oaki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Hiroaki Imai
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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9
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Hsieh CW, Singh RK, Som S, Lu CH. Detection of Fe (III) using APTES-coated CsPbBr3–CsPb2Br5 perovskite quantum dots. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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10
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Long J, Tian W, Zhou Q, Li N, Chen D, Lu J. Efficient piezocatalytic effect of SrxBa1−xTiO3 solid solution nanocubes with inhomogeneous lattice strain for bisphenol A degradation. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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11
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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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Clabel H. JL, Chacaliaza-Ricaldi J, Marega Jr E. Potential Application of Perovskite Structure for Water Treatment: Effects of Band Gap, Band Edges, and Lifetime of Charge Carrier for Photocatalysis. FRONTIERS IN NANOTECHNOLOGY 2022. [DOI: 10.3389/fnano.2022.827925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Perovskite structures have attracted scientific interest as a promising alternative for water treatment due to their unique structural, high oxidation activity, electronic stability, and optical properties. In addition, the photocatalytic activity of perovskite structures is higher than that of many transition metal compounds. A critical property that determines the high-performance photocatalytic and optical properties is the band gap, lifetime of carrier charge, and band edges relative to the redox potential. Thus, the synthesis/processing and study of the effect on the band gap, lifetime of carrier charge, and band edges relative to the redox potential in the development of high-performance photocatalysts for water treatment are critical. This review presents the basic physical principles of optical band gaps, their band gap tunability, potentials, and limitations in the applications for the water treatment. Furthermore, it reports recent advances in the synthesis process and comparatively examines the band gap effect in the photocatalytic response. In addition to the synthesis, the physical mechanisms associated with the change in the band gap have been discussed. Finally, the conclusions of this review, along with the current challenges of perovskites for photocatalysis, are presented.
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13
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Kavey BD, Caruntu D, Mykhailovych V, Caruntu G. Ferroelectric monodisperse Ln-doped barium titanate cuboidal nanocrystals prepared by a solvothermal route. CrystEngComm 2022. [DOI: 10.1039/d2ce00770c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We demonstrate here that the dielectric, electrical and optical properties of BaTiO3 colloidal nanocrystals with a cuboidal shape can be modulated upon aliovalent doping with Ln3+ rare earth ions (Ln = La3+, Ce3+, Nd3+, Sm3+, Gd3+, Dy3+, and Tm3+).
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Affiliation(s)
- Benard D. Kavey
- Department of Chemistry and Biochemistry, Central Michigan University, 1200, S. Franklin St., Mt. Pleasant, MI 48858, USA
- Science of Advanced Materials (SAM) Program, Central Michigan University, 1200, S. Franklin St., Mt. Pleasant, MI 48858, USA
| | - Daniela Caruntu
- Department of Chemistry and Biochemistry, Central Michigan University, 1200, S. Franklin St., Mt. Pleasant, MI 48858, USA
- Science of Advanced Materials (SAM) Program, Central Michigan University, 1200, S. Franklin St., Mt. Pleasant, MI 48858, USA
- Department of Electrical Engineering and Computer Science and MANSID Research Center, “Stefan Cel Mare” University, 13, Universitatii St., Suceava, 720229, Romania
| | - Vasyl Mykhailovych
- Department of Electrical Engineering and Computer Science and MANSID Research Center, “Stefan Cel Mare” University, 13, Universitatii St., Suceava, 720229, Romania
- Department of General Chemistry and Material Science, Yuriy Fedkovych Chernivtsi National University, 2, Kotsjubynskyi St., 58012, Chernivtsi, Ukraine
| | - Gabriel Caruntu
- Department of Chemistry and Biochemistry, Central Michigan University, 1200, S. Franklin St., Mt. Pleasant, MI 48858, USA
- Science of Advanced Materials (SAM) Program, Central Michigan University, 1200, S. Franklin St., Mt. Pleasant, MI 48858, USA
- Department of Electrical Engineering and Computer Science and MANSID Research Center, “Stefan Cel Mare” University, 13, Universitatii St., Suceava, 720229, Romania
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14
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Jiang B, Usher TM, Jothi PR, Kavey B, Caruntu G, Page K. Effect of Ligand Polarity on the Internal Dipoles and Ferroelectric Distortion in BaTiO 3 Nanocubes. Chemistry 2021; 27:8365-8371. [PMID: 33818851 DOI: 10.1002/chem.202100692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Indexed: 11/08/2022]
Abstract
Surface adsorbates and surrounding matrix species have been demonstrated to affect the properties of nanoscale ferroelectrics and nanoscale ferroelectric composites; potentially counteracting performance losses that can occur in small particle sizes. In this work, the effects of nonpolar oleic acid (OA) and polar tetrafluoroborate (BF4 - ) ligand capping on the surface of various sizes of BaTiO3 nanocubes have been investigated with combined neutron diffraction and neutron pair distribution function (PDF), density functional theory (DFT), and ab initio molecular dynamics (AIMD) methods. The low real space PDF region provides an unobstructed view of rhombohedral (split short and long) Ti-O distances in BaTiO3 nanocubes, mimicking the well-established order-disorder local structure found in bulk BaTiO3 . Interestingly, the intermediate-range order in nanocubes is found to be orthorhombic, rather than tetragonal. It is concluded that polar ligands adsorbed at BaTiO3 surfaces stabilize the correlation length scale of local rhombohedral distortions in ferroelectric nanoparticles relative to nonpolar ligands.
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Affiliation(s)
- Bo Jiang
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Tedi-Marie Usher
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Palani Raja Jothi
- Materials Science and Engineering Department and Joint Institute for Advanced Materials, University of Tennessee, Knoxville, TN 37996, USA
| | - Benard Kavey
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI 48859, USA.,Science of Advanced Materials Program, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI 48859, USA
| | - Gabriel Caruntu
- Department of Chemistry and Biochemistry, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI 48859, USA.,Science of Advanced Materials Program, Central Michigan University, 1200 S. Franklin St., Mount Pleasant, MI 48859, USA
| | - Katharine Page
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.,Materials Science and Engineering Department and Joint Institute for Advanced Materials, University of Tennessee, Knoxville, TN 37996, USA
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15
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Pasuk I, Neațu F, Neațu Ș, Florea M, Istrate CM, Pintilie I, Pintilie L. Structural Details of BaTiO 3 Nano-Powders Deduced from the Anisotropic XRD Peak Broadening. NANOMATERIALS 2021; 11:nano11051121. [PMID: 33925991 PMCID: PMC8147028 DOI: 10.3390/nano11051121] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/16/2021] [Accepted: 04/22/2021] [Indexed: 11/24/2022]
Abstract
In this study, nano-BaTiO3 (BTO) powders were obtained via the solvothermal method at different reaction times and were investigated using transmission electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy. The results were compared with those obtained for a larger crystallite size BTO powder (BTO-m). The sizes of the cuboid crystallites (as determined by XRD and TEM) ranged from about 18 to 24 nm, depending on the reaction time. The evolution with temperature of the structure parameters of nano-BTO was monitored by means of X-ray diffraction and Raman spectroscopy and no signs of phase transition were found up to 170 °C. Careful monitoring of the dependence of the XRD peak widths on the hkl indices showed that the effect of the cubic crystallite shape upon the XRD peak widths was buried by the effect of hidden tetragonal line splits and by anisotropic microstrain. The good correlation of the line widths with the tetragonal split amplitudes, observed especially for BTO-m above the transition temperature, indicates tetragonal deformations, as also revealed by Raman spectroscopy. The large anisotropic microstrain shown by the nano-powders, which had a maximum value in the <100> directions, was considered evidence of the phenomenon of surface relaxation of cubic crystallites edged by {100} faces. The observed behavior of the nano-BTO structures with increasing temperature may suggest a correlation between the surface relaxation and tetragonal deformation in the nano-cubes. The experimental results for both nano-BTO and mezoscale-BTO are in agreement with the core-shell model.
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16
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Tawade BV, Apata IE, Singh M, Das P, Pradhan N, Al-Enizi AM, Karim A, Raghavan D. Recent developments in the synthesis of chemically modified nanomaterials for use in dielectric and electronics applications. NANOTECHNOLOGY 2021; 32:142004. [PMID: 33260170 DOI: 10.1088/1361-6528/abcf6c] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polymer nanocomposites (PNC) have attracted enormous scientific and technological interest due to their applications in energy storage, electronics, biosensing, drug delivery, cosmetics and packaging industry. Nanomaterials (platelet, fibers, spheroids, whiskers, rods) dispersed in different types of polymer matrices constitute such PNC. The degree of dispersion of the inorganic nanomaterials in the polymer matrix, as well as the structured arrangement of the nanomaterials, are some of the key factors influencing the overall performance of the nanocomposite. To this end, the surface functionalization of the nanomaterials determines its state of dispersion within the polymer matrix. For energy storage and electronics, these nanomaterials are usually chosen for their dielectric properties for enhancing the performance of device applications. Although several reviews on surface modification of nanomaterials have been reported, a review on the surface functionalization of nanomaterials as it pertains to polymer dielectrics is currently lacking. This review summarizes the recent developments in the surface modification of important metal oxide dielectric nanomaterials including Silicon dioxide (SiO2), titanium dioxide (TiO2), barium titanate (BaTiO3), and aluminum oxide (Al2O3) by chemical agents such as silanes, phosphonic acids, and dopamine. We report the impact of chemical modification of the nanomaterial on the dielectric performance (dielectric constant, breakdown strength, and energy density) of the nanocomposite. Aside from bringing novice and experts up to speed in the area of polymer dielectric nanocomposites, this review will serve as an intellectual resource in the selection of appropriate chemical agents for functionalizing nanomaterials for use in specific polymer matrix so as to potentially tune the final performance of nanocomposite.
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Affiliation(s)
- Bhausaheb V Tawade
- Department of Chemistry, Howard University, Washington DC, United States of America
| | - Ikeoluwa E Apata
- Department of Chemistry, Howard University, Washington DC, United States of America
| | - Maninderjeet Singh
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204, United States of America
| | - Priyanka Das
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS-39217, United States of America
| | - Nihar Pradhan
- Department of Chemistry, Physics and Atmospheric Science, Jackson State University, Jackson, MS-39217, United States of America
| | | | - Alamgir Karim
- Department of Chemical and Biomolecular Engineering, University of Houston, Houston, TX 77204, United States of America
| | - Dharmaraj Raghavan
- Department of Chemistry, Howard University, Washington DC, United States of America
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17
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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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18
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Shevliakova HV, Morozovska AN, Morozosky NV, Svechnikov GS, Shvartsman VV. The Influence of the Distribution Function of Ferroelectric Nanoparticles Sizes on Their Electrocaloric and Pyroelectric Properties. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2020; 67:2445-2453. [PMID: 32746189 DOI: 10.1109/tuffc.2020.3004740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We consider a model of a nanocomposite based on noninteracting spherical single-domain ferroelectric nanoparticles (NPs) of various sizes embedded in a dielectric matrix. The size distribution function of these NPs is selected as a part of the truncated Gaussian distribution from minimum to maximum radius. For such nanocomposites, we calculate the dependences of the reversible part of the electric polarization, the electrocaloric (EC) temperature change, and the dielectric permittivity on the external electric field, which have the characteristic form of hysteresis loops. We then analyze the change in the shape of the hysteresis loops relative to the particle size distribution parameters. We demonstrate that the remanent polarization, coercive field, dielectric permittivity maximums, and maximums and minimums of the EC temperature change depend most strongly on the most probable radius, moderately on the dispersion, and have the weakest dependence on the maximum radius of the NP. We calculate and analyze the dependences of pyroelectric figures of merit on the average radius of the NPs in the composite. The dependences confirm the presence of a phase transition induced by the size of the NPs, which is characterized by the presence of a maxima near the critical average radius of the particles, the value of which increases with an increasing dispersion of the distribution function.
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19
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Kohlenbach ND, Kijatkin C, König M, Haase M, Imlau M, Kömpe K. The role of cations in hydrothermal synthesis of nonlinear optical sodium niobate nanocrystals. NANOSCALE 2020; 12:19223-19229. [PMID: 32929439 DOI: 10.1039/d0nr03840g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The usability of the alkali niobates with their ferroelectric and photorefractive properties could be expanded if the development of synthesis methods would allow to obtain small, preferably monodispersed, crystals in the sub-μm to nanometer regime. Of all the possible synthesis methods, the most reliable is currently hydrothermal synthesis to generate small crystallite sizes of these materials. Although the products of sodium niobate are polydisperse and partially agglomerated, they show a significant SHG signal that is unexpectedly comparable to that of potassium niobate. A view on the hydrothermal synthesis of sodium niobate reveals that the incorporation of cations in the crystalline lattice of the niobium educt plays a part in the formation of the product. The occurrence of distinct different phases, as in the case of potassium niobate, is not observed. Instead, it is shown that a clear assignment of the crystalline phase cannot be made here. This indicates that crystallization of the alkali niobates in hydrothermal synthesis depends on the stoichiometry, the niobium starting material and the cation used.
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Affiliation(s)
- Nico-Dominik Kohlenbach
- Institute of Chemistry of new Materials, University of Osnabrück, Barbarastraße 7, D-49076 Osnabrück, Germany.
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20
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Kumar A, Kumar A, Krishnan V. Perovskite Oxide Based Materials for Energy and Environment-Oriented Photocatalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02947] [Citation(s) in RCA: 205] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Ashish Kumar
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh 175075, India
| | - Ajay Kumar
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh 175075, India
| | - Venkata Krishnan
- School of Basic Sciences and Advanced Materials Research Center, Indian Institute of Technology Mandi, Kamand, Mandi, Himachal Pradesh 175075, India
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21
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Zhang Y, Kim H, Wang Q, Jo W, Kingon AI, Kim SH, Jeong CK. Progress in lead-free piezoelectric nanofiller materials and related composite nanogenerator devices. NANOSCALE ADVANCES 2020; 2:3131-3149. [PMID: 36134257 PMCID: PMC9418676 DOI: 10.1039/c9na00809h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 04/29/2020] [Indexed: 05/25/2023]
Abstract
Current piezoelectric device systems need a significant reduction in size and weight so that electronic modules of increasing capacity and functionality can be incorporated into a great range of applications, particularly in energy device platforms. The key question for most applications is whether they can compete in the race of down-scaling and an easy integration with highly adaptable properties into various system technologies such as nano-electro-mechanical systems (NEMS). Piezoelectric NEMS have potential to offer access to a parameter space for sensing, actuating, and powering, which is inflential and intriguing. Fortunately, recent advances in modelling, synthesis, and characterization techniques are spurring unprecedented developments in a new field of piezoelectric nano-materials and devices. While the need for looking more closely at the piezoelectric nano-materials is driven by the relentless drive of miniaturization, there is an additional motivation: the piezoelectric materials, which are showing the largest electromechanical responses, are currently toxic lead (Pb)-based perovskite materials (such as the ubiquitous Pb(Zr,Ti)O3, PZT). This is important, as there is strong legislative and moral push to remove toxic lead compounds from commercial products. By far, the lack of viable alternatives has led to continuing exemptions to allow their temporary use in piezoelectric applications. However, the present exemption will expire soon, and the concurrent improvement of lead-free piezoelectric materials has led to the possibility that no new exemption will be granted. In this paper, the universal approaches and recent progresses in the field of lead-free piezoelectric nano-materials, initially focusing on hybrid composite materials as well as individual nanoparticles, and related energy harvesting devices are systematically elaborated. The paper begins with a short introduction to the properties of interest in various piezoelectric nanomaterials and a brief description of the current state-of-the-art for lead-free piezoelectric nanostructured materials. We then describe several key methodologies for the synthesis of nanostructure materials including nanoparticles, followed by the discussion on the critical current and emerging applications in detail.
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Affiliation(s)
- Yong Zhang
- State Key Laboratory of Silicate Materials for Architectures, Center for Smart Materials and Device Integration, School of Materials Science and Engineering, Wuhan University of Technology Wuhan 430070 China
- Department of Materials Science and Engineering, National University of Singapore 9 Engineering Drive 1 117575 Singapore
| | - Hyunseung Kim
- Hydrogen and Fuel Cell Research Center, Department of Energy Storage/Conversion Engineering, Jeonbuk National University Jeonju Jeonbuk 54896 Republic of Korea
| | - Qing Wang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park PA 16802 USA
| | - Wook Jo
- School of Materials Science and Engineering, Jülich-UNIST Joint Leading Institute for Advanced Energy Research (JULIA), Ulsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
| | - Angus I Kingon
- School of Engineering, Brown University Providence RI 02912 USA
| | - Seung-Hyun Kim
- School of Engineering, Brown University Providence RI 02912 USA
| | - Chang Kyu Jeong
- Hydrogen and Fuel Cell Research Center, Department of Energy Storage/Conversion Engineering, Jeonbuk National University Jeonju Jeonbuk 54896 Republic of Korea
- Division of Advanced Materials Engineering, Jeonbuk National University Jeonju Jeonbuk 54896 Republic of Korea
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22
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Deng K, Luo Z, Tan L, Quan Z. Self-assembly of anisotropic nanoparticles into functional superstructures. Chem Soc Rev 2020; 49:6002-6038. [PMID: 32692337 DOI: 10.1039/d0cs00541j] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Self-assembly of colloidal nanoparticles (NPs) into superstructures offers a flexible and promising pathway to manipulate the nanometer-sized particles and thus make full use of their unique properties. This bottom-up strategy builds a bridge between the NP regime and a new class of transformative materials across multiple length scales for technological applications. In this field, anisotropic NPs with size- and shape-dependent physical properties as self-assembly building blocks have long fascinated scientists. Self-assembly of anisotropic NPs not only opens up exciting opportunities to engineer a variety of intriguing and complex superlattice architectures, but also provides access to discover emergent collective properties that stem from their ordered arrangement. Thus, this has stimulated enormous research interests in both fundamental science and technological applications. This present review comprehensively summarizes the latest advances in this area, and highlights their rich packing behaviors from the viewpoint of NP shape. We provide the basics of the experimental techniques to produce NP superstructures and structural characterization tools, and detail the delicate assembled structures. Then the current understanding of the assembly dynamics is discussed with the assistance of in situ studies, followed by emergent collective properties from these NP assemblies. Finally, we end this article with the remaining challenges and outlook, hoping to encourage further research in this field.
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Affiliation(s)
- Kerong Deng
- Department of Chemistry, Academy for Advanced Interdisciplinary Studies, Key Laboratory of Energy Conversion and Storage Technologies, Ministry of Education, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China.
| | - Zhishan Luo
- Department of Chemistry, Academy for Advanced Interdisciplinary Studies, Key Laboratory of Energy Conversion and Storage Technologies, Ministry of Education, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China.
| | - Li Tan
- Department of Chemistry, Academy for Advanced Interdisciplinary Studies, Key Laboratory of Energy Conversion and Storage Technologies, Ministry of Education, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China.
| | - Zewei Quan
- Department of Chemistry, Academy for Advanced Interdisciplinary Studies, Key Laboratory of Energy Conversion and Storage Technologies, Ministry of Education, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong 518055, China.
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23
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Zhu P, Chen Y, Shi J. Piezocatalytic Tumor Therapy by Ultrasound-Triggered and BaTiO 3 -Mediated Piezoelectricity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2001976. [PMID: 32537778 DOI: 10.1002/adma.202001976] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/28/2020] [Indexed: 05/18/2023]
Abstract
Ultrasound theranostics features non-invasiveness, minor energy attenuation, and high tissue-penetrating capability, and is playing ever-important roles in the diagnosis and therapy of diseases in clinics. Herein, ultrasound is employed as a microscopic pressure resource to generate reactive oxygen species (ROS) for piezocatalytic tumor therapy under catalytic mediation by piezoelectric tetragonal BaTiO3 (T-BTO). Under the ultrasonic vibration, the electrons and holes are unpaired and they are separated by the piezoelectricity, resulting in the establishment of a strong built-in electric field, which subsequently catalyzes the generation of ROS such as toxic hydroxyl (• OH) and superoxide radicals (• O2 - ) in situ for tumor eradication. This modality shows intriguing advantages over typical sonoluminescence-activated sonodynamic therapy, such as more stable sensitizers and dynamical control of redox reaction outcomes. Furthermore, according to the finite element modeling simulation, the built-in electric field is capable of modulating the band alignment to make the toxic ROS generation energetically favorable. Both detailed in vitro cellular level evaluation and in vivo tumor xenograft assessment have demonstrated that an injectable T-BTO-nanoparticles-embedded thermosensitive hydrogel will substantially induce ultrasound irradiation-triggered cytotoxicity and piezocatalytic tumor eradication, accompanied by high therapeutic biosafety in vivo.
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Affiliation(s)
- Piao Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yu Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jianlin Shi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
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24
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Chamorro N, Martínez-Esaín J, Puig T, Obradors X, Ros J, Yáñez R, Ricart S. Hybrid approach to obtain high-quality BaMO3 perovskite nanocrystals. RSC Adv 2020; 10:28872-28878. [PMID: 35520062 PMCID: PMC9055805 DOI: 10.1039/d0ra03861j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 07/21/2020] [Indexed: 01/13/2023] Open
Abstract
A novel hybrid solvothermal approach for perovskite nanocrystal formation via accurate control of the hydrolytic process is reported.
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Affiliation(s)
- Natalia Chamorro
- Departament de Química
- Universitat Autònoma de Barcelona
- Spain
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- Spain
| | - Jordi Martínez-Esaín
- Departament de Química
- Universitat Autònoma de Barcelona
- Spain
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- Spain
| | - Teresa Puig
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- Spain
| | - Xavier Obradors
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- Spain
| | - Josep Ros
- Departament de Química
- Universitat Autònoma de Barcelona
- Spain
| | - Ramón Yáñez
- Departament de Química
- Universitat Autònoma de Barcelona
- Spain
| | - Susagna Ricart
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC)
- Spain
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25
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Caruntu D, Kavey B, Paul S, Bas AC, Rotaru A, Caruntu G. Dielectric properties of solution-processed BaTiO3–styrene butadiene styrene nanocomposite films. CrystEngComm 2020. [DOI: 10.1039/c9ce01912j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer–ceramic nanocomposite films comprising ceramic nanoparticles dispersed in a polymer matrix (0–3 composites) have garnered increasing interest due to their superior performance characteristics, and can be used in flexible modern electronics and energy storage systems.
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Affiliation(s)
- Daniela Caruntu
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mount Pleasant
- USA
- Department of Electrical Engineering and Computer Science and MANSID Research Center
| | - Benard Kavey
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mount Pleasant
- USA
- Science of Advanced Materials Program
| | - Suporna Paul
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mount Pleasant
- USA
| | - Alin Ciprian Bas
- Department of Electrical Engineering and Computer Science and MANSID Research Center
- “Stefan Cel Mare” University
- Romania
| | - Aurelian Rotaru
- Department of Electrical Engineering and Computer Science and MANSID Research Center
- “Stefan Cel Mare” University
- Romania
| | - Gabriel Caruntu
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mount Pleasant
- USA
- Science of Advanced Materials Program
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27
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Structural regulation of NiFe2O4 colloidal nanocrystal assembly and their magnetic and electrocatalytic properties. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Zablotsky D, Rusevich LL, Zvejnieks G, Kuzovkov V, Kotomin E. Manifestation of dipole-induced disorder in self-assembly of ferroelectric and ferromagnetic nanocubes. NANOSCALE 2019; 11:7293-7303. [PMID: 30938394 DOI: 10.1039/c9nr00708c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The colloidal processing of nearly monodisperse and highly crystalline single-domain ferroelectric or ferromagnetic nanocubes is a promising route to produce superlattice structures for integration into next-generation devices, whereas controlling the local behaviour of nanocrystals is imperative for fabricating highly-ordered assemblies. The current picture of nanoscale polarization in individual nanocrystals suggests a potential presence of a significant dipolar interaction, but its role in the condensation of nanocubes is unknown. We simulate the self-assembly of colloidal dipolar nanocubes under osmotic compression and perform the microstructural characterization of their densified ensembles. Our results indicate that the long-range positional and orientational correlations of perovskite nanocubes are highly sensitive to the presence of dipoles.
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Affiliation(s)
- Dmitry Zablotsky
- Institute of Solid State Physics, Kengaraga str. 8, LV-1063 Riga, Latvia
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29
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Huang M, Xu Z, Hou C, Jia HL, Sun J, Guan M. Facile synthesis of colloidal photoluminescent BiPO 4:Ln (Eu,Tb) nanoparticles well-dispersed in polar solvents. CrystEngComm 2019. [DOI: 10.1039/c8ce01363b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Colloidal photoluminescence BiPO4:Ln (Eu,Tb) nanoparticles well-dispersed in polar solvents have been prepared, which exhibit organic-red and green colours under UV irradiation.
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Affiliation(s)
- Maozhan Huang
- Institute of Advanced Functional Materials for Energy
- School of Chemical and Environmental Engineering
- Jiangsu University of Technology
- Changzhou
- 213001 P. R. China
| | - Zhou Xu
- Institute of Advanced Functional Materials for Energy
- School of Chemical and Environmental Engineering
- Jiangsu University of Technology
- Changzhou
- 213001 P. R. China
| | - Cheng Hou
- Institute of Advanced Functional Materials for Energy
- School of Chemical and Environmental Engineering
- Jiangsu University of Technology
- Changzhou
- 213001 P. R. China
| | - Hai-lang Jia
- Institute of Advanced Functional Materials for Energy
- School of Chemical and Environmental Engineering
- Jiangsu University of Technology
- Changzhou
- 213001 P. R. China
| | - Jianhua Sun
- Institute of Advanced Functional Materials for Energy
- School of Chemical and Environmental Engineering
- Jiangsu University of Technology
- Changzhou
- 213001 P. R. China
| | - Mingyun Guan
- Institute of Advanced Functional Materials for Energy
- School of Chemical and Environmental Engineering
- Jiangsu University of Technology
- Changzhou
- 213001 P. R. China
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30
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Imai H, Matsumoto R, Takasaki M, Tsukiyama K, Sawano K, Nakagawa Y. Evaporation-driven manipulation of nanoscale brickwork structures for the design of 1D, 2D, and 3D microarrays of rectangular building blocks. CrystEngComm 2019. [DOI: 10.1039/c9ce00960d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
As children play with wooden building blocks, we would like to construct elaborate architectures through the one-by-one accumulation of nanocrystals.
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Affiliation(s)
- Hiroaki Imai
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Riho Matsumoto
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Mihiro Takasaki
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Keishi Tsukiyama
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Keisuke Sawano
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
| | - Yoshitaka Nakagawa
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama 223-8522
- Japan
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31
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Usher TM, Olds D, Liu J, Page K. A numerical method for deriving shape functions of nanoparticles for pair distribution function refinements. ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES 2018; 74:322-331. [PMID: 29978843 DOI: 10.1107/s2053273318004977] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 03/27/2018] [Indexed: 11/10/2022]
Abstract
In the structural refinement of nanoparticles, discrete atomistic modeling can be used for small nanocrystals (< 15 nm), but becomes computationally unfeasible at larger sizes, where instead unit-cell-based small-box modeling is usually employed. However, the effect of the nanocrystal's shape is often ignored or accounted for with a spherical model regardless of the actual shape due to the complexities of solving and implementing accurate shape effects. Recent advancements have provided a way to determine the shape function directly from a pair distribution function calculated from a discrete atomistic model of any given shape, including both regular polyhedra (e.g. cubes, spheres, octahedra) and anisotropic shapes (e.g. rods, discs, ellipsoids) [Olds et al. (2015). J. Appl. Cryst. 48, 1651-1659], although this approach is still limited to small size regimes due to computational demands. In order to accurately account for the effects of nanoparticle size and shape in small-box refinements, a numerical or analytical description is needed. This article presents a methodology to derive numerical approximations of nanoparticle shape functions by fitting to a training set of known shape functions; the numerical approximations can then be employed on larger sizes yielding a more accurate and physically meaningful refined nanoparticle size. The method is demonstrated on a series of simulated and real data sets, and a table of pre-calculated shape function expressions for a selection of common shapes is provided.
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Affiliation(s)
- Tedi Marie Usher
- Neutron Scattering Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Daniel Olds
- Neutron Scattering Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Jue Liu
- Neutron Scattering Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Katharine Page
- Neutron Scattering Division, Oak Ridge National Laboratory, One Bethel Valley Road, Oak Ridge, TN 37831, USA
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32
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Zeng S, Kar P, Thakur UK, Shankar K. A review on photocatalytic CO 2 reduction using perovskite oxide nanomaterials. NANOTECHNOLOGY 2018; 29:052001. [PMID: 29214981 DOI: 10.1088/1361-6528/aa9fb1] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
As the search for efficient catalysts for CO2 photoreduction continues, nanostructured perovskite oxides have emerged as a class of high-performance photocatalytic materials. The perovskite oxide candidates for CO2 photoreduction are primarily nanostructured forms of titanates, niobates, tantalates and cobaltates. These materials form the focus of this review article because they are much sought-after due to their nontoxic nature, adequate chemical stability, and tunable crystal structures, bandgaps and surface energies. As compared to conventional semiconductors and nanomaterial catalysts, nanostructured perovskite oxides also exhibit an extended optical-absorption edge, longer charge carrier lifetimes, and favorable band-alignment with respect to reduction potential of activated CO2 and reduction products of the same. While CO2 reduction product yields of several hundred μmol-1 h-1 are observed with many types of perovskite oxide nanomaterials in stand-alone forms, yield of such quantities are not common with semiconductor nanomaterials of other types. In this review, we present current state-of-the-art synthesis methods to form perovskite oxide nanomaterials, and procedures to engineer their bandgaps. This review also presents a comprehensive summary and discussion on crystal structures, defect distribution, morphologies and electronic properties of the perovskite oxides, and correlation of these properties to CO2 photoreduction performance. This review offers researchers key insights for developing advanced perovskite oxides in order to further improve the yields of CO2 reduction products.
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Affiliation(s)
- Sheng Zeng
- Department of Electrical and Computer Engineering, University of Alberta, 9211-116 St, Edmonton, Alberta T6G 1H9, Canada
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33
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Wang J, Choudhary S, Harrigan WL, Crosby AJ, Kittilstved KR, Nonnenmann SS. Transferable Memristive Nanoribbons Comprising Solution-Processed Strontium Titanate Nanocubes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:10847-10854. [PMID: 28276236 DOI: 10.1021/acsami.7b00220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Memristors, often comprising an insulating metal oxide film between two metal electrodes (MIM), constitute a class of two-terminal devices that possesses tunable variations in resistance based on the applied bias history. Intense research remains focused on the metal-insulator interface, which serves as the crux of coupled electronic-ionic interactions and dictates the underpinning transport mechanisms at either electrode. Top-down, ultrahigh-vacuum (UVH) deposition approaches for MIM nanostructures yield highly crystalline, heteroepitaxial interfaces but limit the number of electrode configurations due to a fixed bottom electrode. Here we report on the convective self-assembly, removal, and transfer of individual nanoribbons comprising solution-processed, single-crystalline strontium titanate (STO) perovskite oxide nanocrystals to arbitrary metallized substrates. Nanoribbon transferability enables changes in transport models ranging from interfacial trap-detrap to electrochemical metallization processes. We also demonstrate the endurance of memristive behavior, including switching ratios up to 104, after nanoribbon redeposition onto poly(ethylene terephthalate) (PET) flexible substrates. The combination of ambient, aerobic prepared nanocrystals and convective self-assembly deposition herein provides a pathway for facile, scalable manufacturing of high quality, functional oxide nanostructures on arbitrary surfaces and topologies.
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Affiliation(s)
- Jiaying Wang
- Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Satyan Choudhary
- Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - William L Harrigan
- Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Alfred J Crosby
- Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Kevin R Kittilstved
- Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
| | - Stephen S Nonnenmann
- Department of Mechanical and Industrial Engineering, ‡Polymer Science and Engineering Department, and §Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003, United States
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34
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Mangeri J, Espinal Y, Jokisaari A, Pamir Alpay S, Nakhmanson S, Heinonen O. Topological phase transformations and intrinsic size effects in ferroelectric nanoparticles. NANOSCALE 2017; 9:1616-1624. [PMID: 28074199 DOI: 10.1039/c6nr09111c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Composite materials comprised of ferroelectric nanoparticles in a dielectric matrix are being actively investigated for a variety of functional properties attractive for a wide range of novel electronic and energy harvesting devices. However, the dependence of these functionalities on shapes, sizes, orientation and mutual arrangement of ferroelectric particles is currently not fully understood. In this study, we utilize a time-dependent Ginzburg-Landau approach combined with coupled-physics finite-element-method based simulations to elucidate the behavior of polarization in isolated spherical PbTiO3 or BaTiO3 nanoparticles embedded in a dielectric medium, including air. The equilibrium polarization topology is strongly affected by particle diameter, as well as the choice of inclusion and matrix materials, with monodomain, vortex-like and multidomain patterns emerging for various combinations of size and materials parameters. This leads to radically different polarization vs. electric field responses, resulting in highly tunable size-dependent dielectric properties that should be possible to observe experimentally. Our calculations show that there is a critical particle size below which ferroelectricity vanishes. For the PbTiO3 particle, this size is 2 and 3.4 nm, respectively, for high- and low-permittivity media. For the BaTiO3 particle, it is ∼3.6 nm regardless of the medium dielectric strength.
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Affiliation(s)
- John Mangeri
- Department of Physics, University of Connecticut, Storrs, CT, USA.
| | - Yomery Espinal
- Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA
| | - Andrea Jokisaari
- Center for Hierarchical Material Design, Northwestern-Argonne Institute of Science and Engineering, Northwestern University, Evanston, IL, USA.
| | - S Pamir Alpay
- Department of Physics, University of Connecticut, Storrs, CT, USA. and Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA and Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Serge Nakhmanson
- Department of Physics, University of Connecticut, Storrs, CT, USA. and Department of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA and Institute of Materials Science, University of Connecticut, Storrs, CT, USA
| | - Olle Heinonen
- Center for Hierarchical Material Design, Northwestern-Argonne Institute of Science and Engineering, Northwestern University, Evanston, IL, USA. and Material Science Division, Argonne National Laboratory, Lemont, IL, USA
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35
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Vega M, Alemany P, Martin IR, Llanos J. Structural properties, Judd–Ofelt calculations, and near infrared to visible photon up-conversion in Er3+/Yb3+ doped BaTiO3 phosphors under excitation at 1500 nm. RSC Adv 2017. [DOI: 10.1039/c6ra28725e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The structural and up-conversion properties of BaTiO3 phosphors doped with Er3+/Yb3+ have been studied.
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Affiliation(s)
- M. Vega
- Departamento de Química
- Facultad de Ciencias
- Universidad de Chile
- Santiago
- Chile
| | - P. Alemany
- Departament de Ciència de Materials i Química Física
- Institut de Química Teòrica i Computacional (IQTCUB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
| | - I. R. Martin
- Departamento de Física
- Instituto de Materiales y Nanotecnología (IMN)
- Universidad de La Laguna
- Tenerife
- Spain
| | - J. Llanos
- Departamento de Química
- Universidad Católica del Norte
- Antofagasta
- Chile
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36
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Sun Z, Zhang L, Dang F, Liu Y, Fei Z, Shao Q, Lin H, Guo J, Xiang L, Yerra N, Guo Z. Experimental and simulation-based understanding of morphology controlled barium titanate nanoparticles under co-adsorption of surfactants. CrystEngComm 2017. [DOI: 10.1039/c7ce00279c] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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37
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Pham HT, Yang JH, Lee DS, Lee BH, Jeong HD. Ferroelectric/Dielectric Double Gate Insulator Spin-Coated Using Barium Titanate Nanocrystals for an Indium Oxide Nanocrystal-Based Thin-Film Transistor. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7248-7256. [PMID: 26927618 DOI: 10.1021/acsami.6b00109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Barium titanate nanocrystals (BT NCs) were prepared under solvothermal conditions at 200 °C for 24 h. The shape of the BT NCs was tuned from nanodot to nanocube upon changing the polarity of the alcohol solvent, varying the nanosize in the range of 14-22 nm. Oleic acid-passivated NCs showed good solubility in a nonpolar solvent. The effect of size and shape of the BT NCs on the ferroelectric properties was also studied. The maximum polarization value of 7.2 μC/cm(2) was obtained for the BT-5 NC thin film. Dielectric measurements of the films showed comparable dielectric constant values of BT NCs over 1-100 kHz without significant loss. Furthermore, the bottom gate In2O3 NC thin film transistors exhibited outstanding device performance with a field-effect mobility of 11.1 cm(2) V(-1) s(-1) at a low applied gate voltage with BT-5 NC/SiO2 as the gate dielectric. The low-density trapped state was observed at the interface between the In2O3 NC semiconductor and the BT-5 NCs/SiO2 dielectric film. Furthermore, compensation of the applied gate field by an electric dipole-induced dipole field within the BT-5 NC film was also observed.
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Affiliation(s)
- Hien Thu Pham
- Department of Chemistry, Chonnam National University , Gwangju 500-757, Republic of Korea
| | - Jin Ho Yang
- School of Materials Science & Engineering, Gwangju Institute of Science & Technology , Gwangju 500-712, Republic of Korea
| | - Don-Sung Lee
- Department of Chemistry, Chonnam National University , Gwangju 500-757, Republic of Korea
| | - Byoung Hun Lee
- School of Materials Science & Engineering, Gwangju Institute of Science & Technology , Gwangju 500-712, Republic of Korea
| | - Hyun-Dam Jeong
- Department of Chemistry, Chonnam National University , Gwangju 500-757, Republic of Korea
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38
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Hiley CI, Walton RI. Controlling the crystallisation of oxide materials by solvothermal chemistry: tuning composition, substitution and morphology of functional solids. CrystEngComm 2016. [DOI: 10.1039/c6ce01655c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three aspects in the synthesis of oxides under solvothermal conditions are reviewed: materials discovery, substitutional chemistry and crystal habit control.
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Affiliation(s)
- Craig I. Hiley
- Department of Chemistry
- University of Warwick
- Coventry, UK
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39
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Parizi SS, Conley G, Costanzo T, Howell B, Mellinger A, Caruntu G. Fabrication of barium titanate/acrylonitrile-butadiene styrene/poly(methyl methacrylate) nanocomposite films for hybrid ferroelectric capacitors. RSC Adv 2015. [DOI: 10.1039/c5ra11347d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new organic–inorganic ferroelectric hybrid capacitor designed by uniformly incorporating monodisperse 15 nm ferroelectric BaTiO3 nanocubes into non-polar polymer blends of poly(methyl methacrylate) (PMMA) and acrylonitrile-butadiene-styrene (ABS) terpolymer is described.
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Affiliation(s)
- Saman Salemizadeh Parizi
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mt. Pleasant
- USA
- The Science of Advanced Materials (SAM) Program
| | - Gavin Conley
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mt. Pleasant
- USA
| | - Tommaso Costanzo
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mt. Pleasant
- USA
- The Science of Advanced Materials (SAM) Program
| | - Bob Howell
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mt. Pleasant
- USA
- The Science of Advanced Materials (SAM) Program
| | - Axel Mellinger
- Department of Physics
- Central Michigan University
- Mt. Pleasant
- USA
- The Science of Advanced Materials (SAM) Program
| | - Gabriel Caruntu
- Department of Chemistry and Biochemistry
- Central Michigan University
- Mt. Pleasant
- USA
- The Science of Advanced Materials (SAM) Program
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