1
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Shen X, Wu Y, Dang C, Li P, Guo P. Direct chemical-vapor-deposition growth of alloyed perovskite microcrystals for tunable emissions. NANOTECHNOLOGY 2024; 35:185704. [PMID: 38271736 DOI: 10.1088/1361-6528/ad22af] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/24/2024] [Indexed: 01/27/2024]
Abstract
Tunable composition of perovskite micro/nanostructures are perfect candidate for the designing of multifunctional optoelectronic circuits. Especially, integrated polychromatic luminescence based on the perovskite materials along a single substrate or chip is essential to the integrated photonic devices and multicolor displays. Here, we reported a synthesis of composition tunable CsPbI3(1-x)Br3x(X = 0.65-0.9) perovskite microstructures on a single substrate via a magnetic-pulling CVD method. The PL emissions can be changed gradually from green (558 nm, 2.23 eV) to red (610 nm, 2.03 eV) under a focused 375 nm laser illumination. Furthermore, these composition-graded alloyed perovskite microcrystals show stable emissions after six months in air, which may find applications in multicolor display and broad band light sources in the future.
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Affiliation(s)
- Xia Shen
- College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
| | - Yu Wu
- College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
| | - Chanjuan Dang
- College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- School of Physics and Electronic Science, Shanxi Datong University, Datong 037009, People's Republic of China
| | - Pu Li
- College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
| | - Pengfei Guo
- College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, People's Republic of China
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong 999077, People's Republic of China
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2
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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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3
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Wang X, Dai X, Chen Y. Sonopiezoelectric Nanomedicine and Materdicine. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2301693. [PMID: 37093550 DOI: 10.1002/smll.202301693] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/02/2023] [Indexed: 05/03/2023]
Abstract
Endogenous electric field is ubiquitous in a multitude of important living activities such as bone repair, cell signal transduction, and nerve regeneration, signifying that regulating the electric field in organisms is highly beneficial to maintain organism health. As an emerging and promising research direction, piezoelectric nanomedicine and materdicine precisely activated by ultrasound with synergetic advantages of deep tissue penetration, remote spatiotemporal selectivity, and mechanical-electrical energy interconversion, have been progressively utilized for disease treatment and tissue repair by participating in the modulation of endogenous electric field. This specific nanomedicine utilizing piezoelectric effect activated by ultrasound is typically regarded as "sonopiezoelectric nanomedicine". This comprehensive review summarizes and discusses the substantially employed sonopiezoelectric nanomaterials and nanotherapies to provide an insight into the internal mechanism of the corresponding biological behavior/effect of sonopiezoelectric biomaterials in versatile disease treatments. This review primarily focuses on the sonopiezoelectric biomaterials for biosensing, drug delivery, tumor therapy, tissue regeneration, antimicrobia, and further illuminates the underlying sonopiezoelectric mechanism. In addition, the challenges and developments/prospects of sonopiezoelectric nanomedicine are analyzed for promoting the further clinical translation. It is earnestly expected that this kind of nanomedicine/biomaterials-enabled sonopiezoelectric technology will provoke the comprehensive investigation and promote the clinical development of the next-generation multifunctional materdicine.
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Affiliation(s)
- Xue Wang
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China
| | - Xinyue Dai
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China
| | - Yu Chen
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, P. R. China
- School of Medicine, Shanghai University, Shanghai, 200444, P. R. China
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4
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Dai B, Guo J, Gao C, Yin H, Xie Y, Lin Z. Recent Advances in Efficient Photocatalysis via Modulation of Electric and Magnetic Fields and Reactive Phase Control. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210914. [PMID: 36638334 DOI: 10.1002/adma.202210914] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/30/2022] [Indexed: 06/17/2023]
Abstract
The past several years has witnessed significant progress in enhancing photocatalytic performance via robust electric and magnetic fields' modulation to promote the separation and transfer of photoexcited carriers, and phase control at reactive interface to lower photocatalytic reaction energy barrier and facilitate mass transfer. These three research directions have received soaring attention in photocatalytic field. Herein, recent advances in photocatalysis modulated by electric field (i.e., piezoelectric, pyroelectric, and triboelectric fields, as well as their coupling) with specific examples and mechanisms discussion are first examined. Subsequently, the strategy via magnetic field manipulation for enhancing photocatalytic performance is scrutinized, including the spin polarization, Lorentz force, and magnetoresistance effect. Afterward, materials with tailored structure and composition design enabled by reactive phase control and their applications in photocatalytic hydrogen evolution and carbon dioxide reduction are reviewed. Finally, the challenges and potential opportunities to further boost photocatalytic efficiency are presented, aiming at providing crucial theoretical and experimental guidance for those working in photocatalysis, ferroelectrics, triboelectrics, piezo-/pyro-/tribo-phototronics, and electromagnetics, among other related areas.
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Affiliation(s)
- Baoying Dai
- State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Jiahao Guo
- State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Chenchen Gao
- State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Hang Yin
- State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Yannan Xie
- State Key Laboratory of Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu Key Laboratory for Biosensors, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, Nanjing, 210023, China
| | - Zhiqun Lin
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 118425, Singapore
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5
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Bennett D, Chaudhary G, Slager RJ, Bousquet E, Ghosez P. Polar meron-antimeron networks in strained and twisted bilayers. Nat Commun 2023; 14:1629. [PMID: 36959197 PMCID: PMC10036565 DOI: 10.1038/s41467-023-37337-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 03/13/2023] [Indexed: 03/25/2023] Open
Abstract
Out-of-plane polar domain structures have recently been discovered in strained and twisted bilayers of inversion symmetry broken systems such as hexagonal boron nitride. Here we show that this symmetry breaking also gives rise to an in-plane component of polarization, and the form of the total polarization is determined purely from symmetry considerations. The in-plane component of the polarization makes the polar domains in strained and twisted bilayers topologically non-trivial, forming a network of merons and antimerons (half-skyrmions and half-antiskyrmions). For twisted systems, the merons are of Bloch type whereas for strained systems they are of Néel type. We propose that the polar domains in strained or twisted bilayers may serve as a platform for exploring topological physics in layered materials and discuss how control over topological phases and phase transitions may be achieved in such systems.
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Affiliation(s)
- Daniel Bennett
- Physique Théorique des Matériaux, QMAT, CESAM, University of Liège, B-4000, Sart-Tilman, Belgium.
- Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge, CB3 0HE, UK.
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138, USA.
| | - Gaurav Chaudhary
- Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Robert-Jan Slager
- Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, J. J. Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Eric Bousquet
- Physique Théorique des Matériaux, QMAT, CESAM, University of Liège, B-4000, Sart-Tilman, Belgium
| | - Philippe Ghosez
- Physique Théorique des Matériaux, QMAT, CESAM, University of Liège, B-4000, Sart-Tilman, Belgium
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6
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Sood A, Desseigne M, Dev A, Maurizi L, Kumar A, Millot N, Han SS. A Comprehensive Review on Barium Titanate Nanoparticles as a Persuasive Piezoelectric Material for Biomedical Applications: Prospects and Challenges. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206401. [PMID: 36585372 DOI: 10.1002/smll.202206401] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Stimulation of cells with electrical cues is an imperative approach to interact with biological systems and has been exploited in clinical practices over a wide range of pathological ailments. This bioelectric interface has been extensively explored with the help of piezoelectric materials, leading to remarkable advancement in the past two decades. Among other members of this fraternity, colloidal perovskite barium titanate (BaTiO3 ) has gained substantial interest due to its noteworthy properties which includes high dielectric constant and excellent ferroelectric properties along with acceptable biocompatibility. Significant progression is witnessed for BaTiO3 nanoparticles (BaTiO3 NPs) as potent candidates for biomedical applications and in wearable bioelectronics, making them a promising personal healthcare platform. The current review highlights the nanostructured piezoelectric bio interface of BaTiO3 NPs in applications comprising drug delivery, tissue engineering, bioimaging, bioelectronics, and wearable devices. Particular attention has been dedicated toward the fabrication routes of BaTiO3 NPs along with different approaches for its surface modifications. This review offers a comprehensive discussion on the utility of BaTiO3 NPs as active devices rather than passive structural unit behaving as carriers for biomolecules. The employment of BaTiO3 NPs presents new scenarios and opportunity in the vast field of nanomedicines for biomedical applications.
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Affiliation(s)
- Ankur Sood
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, 38541, South Korea
| | - Margaux Desseigne
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, Dijon, 21078, France
| | - Atul Dev
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of California Davis, 2921 Stockton Boulevard, Sacramento, CA, 95817, USA
| | - Lionel Maurizi
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, Dijon, 21078, France
| | - Anuj Kumar
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, 38541, South Korea
- Institute of Cell Culture, Yeungnam University, 280 Daehak-ro, Gyeongsan, 38541, South Korea
| | - Nadine Millot
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS/Université Bourgogne Franche-Comté, 9 Avenue Alain Savary, BP 47870, Dijon, 21078, France
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, 38541, South Korea
- Institute of Cell Culture, Yeungnam University, 280 Daehak-ro, Gyeongsan, 38541, South Korea
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7
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Wood ND, Teter DM, Tse JS, Jackson RA, Cooke DJ, Gillie LJ, Parker SC, Molinari M. An atomistic modelling investigation of the defect chemistry of SrTiO3 and its Ruddlesden-Popper phases, Srn+1TinO3n+1 (n = 1–3). J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Zhang G, Li Q, Allahyarov E, Li Y, Zhu L. Challenges and Opportunities of Polymer Nanodielectrics for Capacitive Energy Storage. ACS APPLIED MATERIALS & INTERFACES 2021; 13:37939-37960. [PMID: 34370438 DOI: 10.1021/acsami.1c04991] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
With the modern development of power electrification, polymer nanocomposite dielectrics (or nanodielectrics) have attracted significant research attention. The idea is to combine the high dielectric constant of inorganic nanofillers and the high breakdown strength/low loss of a polymer matrix for higher energy density polymer film capacitors. Although impressively high energy density has been achieved at the laboratory scale, there is still a large gap from the eventual goal of polymer nanodielectric capacitors. In this review, we focus on essential material issues for two types of polymer nanodielectrics, polymer/conductive nanoparticle and polymer/ceramic nanoparticle composites. Various material design parameters, including dielectric constant, dielectric loss, breakdown strength, high temperature rating, and discharged energy density will be discussed from both fundamental science and high-voltage capacitor application points of view. The objective is to identify advantages and disadvantages of the polymer nanodielectric approach against other approaches utilizing neat dielectric polymers and ceramics. Given the state-of-the-art understanding, future research directions are outlined for the continued development of polymer nanodielectrics for electric energy storage applications.
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Affiliation(s)
- Guoqiang Zhang
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
| | - Qiong Li
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
| | - Elshad Allahyarov
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
- Institut für Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany
- Theoretical Department, Joint Institute for High Temperatures, Russian Academy of Sciences, 13/19 Izhorskaya Street, Moscow 125412, Russia
| | - Yue Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Lei Zhu
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7202, United States
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9
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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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10
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Shen Z, Zhao S, Song D, Xu Z, Qiao B, Song P, Bai Q, Cao J, Zhang G, Swelm W. Improving the Quality and Luminescence Performance of All-Inorganic Perovskite Nanomaterials for Light-Emitting Devices by Surface Engineering. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907089. [PMID: 32431070 DOI: 10.1002/smll.201907089] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 03/15/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
Lead halide perovskites and their applications in the optoelectronic field have garnered intensive interest over the years. Inorganic perovskites (IHP), though a novel class of material, are considered as one of the most promising optoelectronic materials. These materials are widely used in detectors, solar cells, and other devices, owing to their excellent charge-transport properties, high defect tolerance, composition- and size-dependent luminescence, narrow emission, and high photoluminescence quantum yield. In recent years, numerous encouraging achievements have been realized, especially in the research of CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) and surface engineering. Therefore, it is necessary to summarize the principles and effects of these surface engineering optimization methods. It is also important to scientifically guide the applications and promote the development of perovskites more efficiently. Herein, the principles of surface ligands are reviewed, and various surface treatment methods used in CsPbX3 NCs as well as quantum-dot light-emitting diodes are presented. Finally, a brief outlook on CsPbX3 NC surface engineering is offered, illustrating the present challenges and the direction in which future investigations are intended to obtain high-quality CsPbX3 NCs that can be utilized in more applications.
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Affiliation(s)
- Zhaohui Shen
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Suling Zhao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Dandan Song
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Zheng Xu
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Bo Qiao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Pengjie Song
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Qiongyu Bai
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Jingyue Cao
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Gaoqian Zhang
- Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing, 100044, China
| | - Wageh Swelm
- Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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11
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Carneiro JSA, Williams J, Gryko A, Herrera LP, Nikolla E. Embracing the Complexity of Catalytic Structures: A Viewpoint on the Synthesis of Nonstoichiometric Mixed Metal Oxides for Catalysis. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04226] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Juliana S. A. Carneiro
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Jillian Williams
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Aleksandra Gryko
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Laura Paz Herrera
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
| | - Eranda Nikolla
- Department of Chemical Engineering and Materials Science, Wayne State University, Detroit, Michigan 48202, United States
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12
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Jiang B, Iocozzia J, Zhao L, Zhang H, Harn YW, Chen Y, Lin Z. Barium titanate at the nanoscale: controlled synthesis and dielectric and ferroelectric properties. Chem Soc Rev 2019; 48:1194-1228. [PMID: 30663742 DOI: 10.1039/c8cs00583d] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The current trend in the miniaturization of electronic devices has driven the investigation into many nanostructured materials. The ferroelectric material barium titanate (BaTiO3) has garnered considerable attention over the past decade owing to its excellent dielectric and ferroelectric properties. This has led to significant progress in synthetic techniques that yield high quality BaTiO3 nanocrystals (NCs) with well-defined morphologies (e.g., nanoparticles, nanorods, nanocubes and nanowires) and controlled crystal phases (e.g., cubic, tetragonal and multi-phase). The ability to produce nanoscale BaTiO3 with controlled properties enables theoretical and experimental studies on the intriguing yet complex dielectric properties of individual BaTiO3 NCs as well as BaTiO3/polymer nanocomposites. Compared with polymer-free individual BaTiO3 NCs, BaTiO3/polymer nanocomposites possess several advantages. The polymeric component enables simple solution processibility, high breakdown strength and light weight for device scalability. The BaTiO3 component enables a high dielectric constant. In this review, we highlight recent advances in the synthesis of high-quality BaTiO3 NCs via a variety of chemical approaches including organometallic, solvothermal/hydrothermal, templating, molten salt, and sol-gel methods. We also summarize the dielectric and ferroelectric properties of individual BaTiO3 NCs and devices based on BaTiO3 NCs via theoretical modeling and experimental piezoresponse force microscopy (PFM) studies. In addition, viable synthetic strategies for novel BaTiO3/polymer nanocomposites and their structure-composition-performance relationship are discussed. Lastly, a perspective on the future direction of nanostructured BaTiO3-based materials is presented.
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Affiliation(s)
- Beibei Jiang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - James Iocozzia
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Lei Zhao
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Hefeng Zhang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Yeu-Wei Harn
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Yihuang Chen
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Zhiqun Lin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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13
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Emerging Perovskite Nanocrystals-Enhanced Solid-State Lighting and Liquid-Crystal Displays. CRYSTALS 2019. [DOI: 10.3390/cryst9020059] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Recent advances in perovskite nanocrystals-enhanced solid-state lighting (SSL) and liquid-crystal displays (LCDs) are reviewed. We first discuss the development, optical properties, and stability issue of materials, and then we evaluate the performance of SSL and LCDs with perovskite downconverters adopted. In SSL performance evaluation, we investigate the fitting-curve effect in calculations and optimizations where simple Gaussian fitting and precise fitting are compared in detail, and we further optimize for highly efficient, good color-rendering, and human-healthy SSL sources. For LCD performance evaluation, we study the intrinsic tradeoffs between total light efficiency and color gamut coverage. Through optimizations using real line shapes, Rec. 2020 standard coverage as large as 92.8% can be achieved through hybrid integration. Finally, we briefly discuss two future challenges: materials development and device integration. We believe the emerging perovskite nanocrystals are highly promising for next-generation SSL and LCDs.
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14
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Munawar K, Perveen F, Shahid MM, Basirun WJ, Bin Misran M, Mazhar M. Synthesis, characterization and computational study of an ilmenite-structured Ni 3Mn 3Ti 6O 18 thin film photoanode for solar water splitting. NEW J CHEM 2019. [DOI: 10.1039/c9nj00457b] [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
Thin films of a Ni3Mn3Ti6O18 solid solution photoanode have been deposited on an FTO coated glass substrate and experimental results are supported by DFT studies.
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Affiliation(s)
- Khadija Munawar
- Department of Chemistry
- Faculty of Science
- University of Malaya
- Kuala Lumpur 50603
- Malaysia
| | - Fouzia Perveen
- Research Center for Modeling and Simulation (RCMS)
- National University of Sciences and Technology (NUST)
- Islamabad
- Pakistan
| | - Muhammad Mehmood Shahid
- Higher Institution Centre of Excellence (HICoE)
- UM Power Energy Dedicated Advanced Centre (UMPEDAC)
- Level 4
- Wisma R&D University of Malaya
- 59990 Kuala Lumpur
| | - Wan Jeffrey Basirun
- Department of Chemistry
- Faculty of Science
- University of Malaya
- Kuala Lumpur 50603
- Malaysia
| | - Misni Bin Misran
- Department of Chemistry
- Faculty of Science
- University of Malaya
- Kuala Lumpur 50603
- Malaysia
| | - Muhammad Mazhar
- Department of Chemistry
- Faculty of Science
- University of Malaya
- Kuala Lumpur 50603
- Malaysia
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15
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Sugiyama N, Sonay AY, Tussiwand R, Cohen BE, Pantazis P. Effective Labeling of Primary Somatic Stem Cells with BaTiO 3 Nanocrystals for Second Harmonic Generation Imaging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:1703386. [PMID: 29356374 DOI: 10.1002/smll.201703386] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 11/14/2017] [Indexed: 05/22/2023]
Abstract
While nanoparticles are an increasingly popular choice for labeling and tracking stem cells in biomedical applications such as cell therapy, their intracellular fate and subsequent effect on stem cell differentiation remain elusive. To establish an effective stem cell labeling strategy, the intracellular nanocrystal concentration should be minimized to avoid adverse effects, without compromising the intensity and persistence of the signal necessary for long-term tracking. Here, the use of second-harmonic generating barium titanate nanocrystals is reported, whose achievable brightness allows for high contrast stem cell labeling with at least one order of magnitude lower intracellular nanocrystals than previously reported. Their long-term photostability enables to investigate quantitatively at the single cell level their cellular fate in hematopoietic stem cells (HSCs) using both multiphoton and electron microscopy. It is found that the concentration of nanocrystals in proliferative multipotent progenitors is over 2.5-fold greater compared to quiescent stem cells; this difference vanishes when HSCs enter a nonquiescent, proliferative state, while their potency remains unaffected. Understanding the nanoparticle stem cell interaction allows to establish an effective and safe nanoparticle labeling strategy into somatic stem cells that can critically contribute to an understanding of their in vivo therapeutic potential.
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Affiliation(s)
- Nami Sugiyama
- Department of Biosystems Science and Engineering (D-BSSE), Eidgenössische Technische Hochschule (ETH) Zurich, 4058, Basel, Switzerland
| | - Ali Y Sonay
- Department of Biosystems Science and Engineering (D-BSSE), Eidgenössische Technische Hochschule (ETH) Zurich, 4058, Basel, Switzerland
| | - Roxanne Tussiwand
- Department of Biomedicine, University of Basel, 4058, Basel, Switzerland
| | - Bruce E Cohen
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Periklis Pantazis
- Department of Biosystems Science and Engineering (D-BSSE), Eidgenössische Technische Hochschule (ETH) Zurich, 4058, Basel, Switzerland
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16
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Three-dimensional imaging of vortex structure in a ferroelectric nanoparticle driven by an electric field. Nat Commun 2017; 8:280. [PMID: 28819262 PMCID: PMC5561144 DOI: 10.1038/s41467-017-00318-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 06/21/2017] [Indexed: 11/09/2022] Open
Abstract
Topological defects of spontaneous polarization are extensively studied as templates for unique physical phenomena and in the design of reconfigurable electronic devices. Experimental investigations of the complex topologies of polarization have been limited to surface phenomena, which has restricted the probing of the dynamic volumetric domain morphology in operando. Here, we utilize Bragg coherent diffractive imaging of a single BaTiO3 nanoparticle in a composite polymer/ferroelectric capacitor to study the behavior of a three-dimensional vortex formed due to competing interactions involving ferroelectric domains. Our investigation of the structural phase transitions under the influence of an external electric field shows a mobile vortex core exhibiting a reversible hysteretic transformation path. We also study the toroidal moment of the vortex under the action of the field. Our results open avenues for the study of the structure and evolution of polar vortices and other topological structures in operando in functional materials under cross field configurations. Imaging of topological states of matter such as vortex configurations has generally been limited to 2D surface effects. Here Karpov et al. study the volumetric structure and dynamics of a vortex core mediated by electric-field induced structural phase transition in a ferroelectric BaTiO3 nanoparticle.
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17
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Scalable Free-Radical Polymerization Based Sol-Gel Synthesis of SrTiO 3
and its Photocatalytic Activity. ChemistrySelect 2017. [DOI: 10.1002/slct.201700570] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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18
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Yao L, Pan Z, Zhai J, Chen HHD. Novel design of highly [110]-oriented barium titanate nanorod array and its application in nanocomposite capacitors. NANOSCALE 2017; 9:4255-4264. [PMID: 28294221 DOI: 10.1039/c6nr09250k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanocomposites in capacitors combining highly aligned one dimension ferroelectric nanowires with polymer would be more desirable for achieving higher energy density. However, the synthesis of the well-isolated ferroelectric oxide nanorod arrays with a high orientation has been rather scant, especially using glass-made substrates. In this study, a novel design that is capable of fabricating a highly [110]-oriented BaTiO3 (BT) nanorod array was proposed first, using a three-step hydrothermal reaction on glass-made substrates. The details for controlling the dispersion of the nanorod array, the orientation and the aspect ratio are also discussed. It is found that the alkaline treatment of the TiO2 (TO) nanorod array, rather than the completing transformation into sodium titanate, favors the transformation of the TO into the BT nanorod array, as well as protecting the glass-made substrate. The dispersity of the nanorod array can be controlled by the introduction of a glycol ether-deionized water mixed solvent and soluble salts. Moreover, the orientation of the nanorod arrays could be tuned by the ionic strength of the solution. This novel BT nanorod array was used as a filler in a nanocomposite capacitor, demonstrating that a large energy density (11.82 J cm-3) can be achieved even at a low applied electric field (3200 kV cm-1), which opens us a new application in nanocomposite capacitors.
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Affiliation(s)
- Lingmin Yao
- Institute of Applied Physics and Materials Engineering, Faculty of Science and Technology, University of Macau, Macao SAR 999078, China.
| | - Zhongbin Pan
- Functional Materials Research Laboratory, School of Materials Science & Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China.
| | - Jiwei Zhai
- Functional Materials Research Laboratory, School of Materials Science & Engineering, Tongji University, 4800 Caoan Road, Shanghai 201804, China.
| | - Haydn H D Chen
- Institute of Applied Physics and Materials Engineering, Faculty of Science and Technology, University of Macau, Macao SAR 999078, China.
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19
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Ghasemian MB, Lin Q, Adabifiroozjaei E, Wang F, Chu D, Wang D. Morphology control and large piezoresponse of hydrothermally synthesized lead-free piezoelectric (Bi0.5Na0.5)TiO3 nanofibres. RSC Adv 2017. [DOI: 10.1039/c7ra01293d] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
(Bi0.5Na0.5)TiO3 nanofibers were synthesized hydrothermally, nanostructures were investigated and piezoelectric properties of single nanofibers were measured.
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Affiliation(s)
| | - Qianru Lin
- School of Materials Science and Engineering
- The University of New South Wales
- Sydney
- Australia
| | | | - Feifei Wang
- Key Laboratory of Optoelectronic Material and Device
- Department of Physics
- Shanghai Normal University
- Shanghai
- China
| | - Dewei Chu
- School of Materials Science and Engineering
- The University of New South Wales
- Sydney
- Australia
| | - Danyang Wang
- School of Materials Science and Engineering
- The University of New South Wales
- Sydney
- Australia
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20
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Canu G, Buscaglia V. Hydrothermal synthesis of strontium titanate: thermodynamic considerations, morphology control and crystallisation mechanisms. CrystEngComm 2017. [DOI: 10.1039/c7ce00834a] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The hydrothermal/solvothermal method is one of the most versatile synthetic routes for producing a large number of compounds. The thermodynamic aspects, the control of morphology and the crystallisation mechanisms are reviewed and discussed in this highlight, with special emphasis on the synthesis of SrTiO3, as a model system.
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Affiliation(s)
- Giovanna Canu
- Institute of Condensed Matter Chemistry and Technologies for Energy
- National Research Council
- I-16149 Genoa
- Italy
| | - Vincenzo Buscaglia
- Institute of Condensed Matter Chemistry and Technologies for Energy
- National Research Council
- I-16149 Genoa
- Italy
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21
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Torgersen J, Acharya S, Dadlani AL, Petousis I, Kim Y, Trejo O, Nordlund D, Prinz FB. Relating Electronic and Geometric Structure of Atomic Layer Deposited BaTiO3 to its Electrical Properties. J Phys Chem Lett 2016; 7:1428-1433. [PMID: 27009677 PMCID: PMC4845061 DOI: 10.1021/acs.jpclett.6b00393] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 03/23/2016] [Indexed: 06/05/2023]
Abstract
Atomic layer deposition allows the fabrication of BaTiO3 (BTO) ultrathin films with tunable dielectric properties, which is a promising material for electronic and optical technology. Industrial applicability necessitates a better understanding of their atomic structure and corresponding properties. Through the use of element-specific X-ray absorption near edge structure (XANES) analysis, O K-edge of BTO as a function of cation composition and underlying substrate (RuO2 and SiO2) is revealed. By employing density functional theory and multiple scattering simulations, we analyze the distortions in BTO's bonding environment captured by the XANES spectra. The spectral weight shifts to lower energy with increasing Ti content and provides an atomic scale (microscopic) explanation for the increase in leakage current density. Differences in film morphologies in the first few layers near substrate-film interfaces reveal BTO's homogeneous growth on RuO2 and its distorted growth on SiO2. This work links structural changes to BTO thin-film properties and provides insight necessary for optimizing future BTO and other ternary metal oxide-based thin-film devices.
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Affiliation(s)
| | | | | | | | | | | | - Dennis Nordlund
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
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22
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Nahas Y, Prokhorenko S, Bellaiche L. Frustration and Self-Ordering of Topological Defects in Ferroelectrics. PHYSICAL REVIEW LETTERS 2016; 116:117603. [PMID: 27035323 DOI: 10.1103/physrevlett.116.117603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Indexed: 06/05/2023]
Abstract
A first-principles-based effective Hamiltonian technique is used to investigate the interplay between geometrical frustration and the ordering of topological defects in a ferroelectric nanocomposite consisting of a square array of BaTiO_{3} nanowires embedded in a Ba_{0.15}Sr_{0.85}TiO_{3} matrix. Different arrangements of the wires' chiralities geometrically frustrate the matrix, which in response exhibits point topological defects featuring self-assembled ordered structures spatially fluctuating down to the lowest temperatures. These fluctuations thereby endow the system with residual configurational entropy from which many properties characteristic of geometric frustration, such as the ground state degeneracy and the broadness of the dielectric response, are further found to originate.
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Affiliation(s)
- Y Nahas
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - S Prokhorenko
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - L Bellaiche
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, Arkansas 72701, USA
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23
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Anitha VC, Banerjee AN, Joo SW, Min BK. Morphology-dependent low macroscopic field emission properties of titania/titanate nanorods synthesized by alkali-controlled hydrothermal treatment of a metallic Ti surface. NANOTECHNOLOGY 2015; 26:355705. [PMID: 26246034 DOI: 10.1088/0957-4484/26/35/355705] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
One-dimensional (1D) and two-dimensional (2D) titania/titanate nanostructures are fabricated directly on a self-source metallic titanium (Ti) surface via in situ surface re-construction of a Ti substrate using potassium hydroxide (KOH) under a hydrothermal (HT) condition. The effect of temperature and the concentration of KOH on the variations in morphology and titania-to-titanate phase changes are studied and explained in detail. A growth model is proposed for the formation process of the platelet-to-nanorod conversion mechanism. The field emission (FE) properties of titania/titanate nanostructures are studied, and the effects of the morphologies (such as 1D nanorods, 2D nanoplatelets, and a mixture of 1D nanorods and 2D platelets) on the FE properties of the samples are investigated. The samples depict a reasonable low turn-on field and emission stability. The FE mechanism is observed to follow standard Fowler-Nordheim (FN) electron tunneling. The geometrical field enhancement factor (β) is measured to be very high, and is compared with theoretical values calculated from various existing models to explore the feasibility of these models. The surface modification of metallic Ti by a simple non-lithographic bottom-up method and the low-macroscopic FE properties can provide a potential alternative to field emission displays for low-power panel technology.
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Affiliation(s)
- V C Anitha
- School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, Korea
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24
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Li J, Dai W, Yan J, Wu G, Li L, Guan N. Hydrothermal synthesis and photocatalytic properties of tantalum pentoxide nanorods. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(14)60215-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Su R, Shen Y, Li L, Zhang D, Yang G, Gao C, Yang Y. Silver-modified nanosized ferroelectrics as a novel photocatalyst. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:202-207. [PMID: 25186805 DOI: 10.1002/smll.201401437] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Revised: 07/10/2014] [Indexed: 06/03/2023]
Abstract
Monodispersed ferroelectric BaTiO3 nanoparticles are synthesized as a model system to investigate the effect of ferroelectricity on a photocatalytic process. The results demonstrate that ferroelectricity can directly affect the photocatalytic activity due to promotion of the separation of photo-excited carriers by spontaneous polarization in ferroelectric materials. Moreover, Ag nanoparticles are attached on these BaTiO3 to further improve the photocatalytic property.
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Affiliation(s)
- Ran Su
- Multi-disciplinary Materials Research Center, Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China
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26
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Lu T, Wei H, Yang X, Li J, Wang X, Zhang T. Microemulsion-controlled synthesis of one-dimensional Ir nanowires and their catalytic activity in selective hydrogenation of o-chloronitrobenzene. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:90-95. [PMID: 25514018 DOI: 10.1021/la5040307] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ultrathin iridium nanowires have been synthesized using a convenient method mediated by microemulsion via oriented attachment growth for the first time. The interconnected polycrystalline Ir nanowires possess high aspect ratio, small average diameter of 2 nm, and length up to several hundred nanometers. The 1D growth of surfactant-encapsulated primary nanoparticles, which is determined by the inherent crystal growth habit and the specific interactions of nanocrystals with surfactant molecules, accounts for the formation of Ir nanowires. The as-prepared Ir nanowires show high activity and selectivity toward the hydrogenation production of industrially valuable chloroaniline from o-chloronitrobenzene. Theoretical evidence based on DFT calculation indicates that H2 could be dissociated more easily and quickly on Ir(100) surface than on Ir(111), accounting for the higher hydrogenation rate over Ir nanowires exposing both (200) and (111) crystal facets rather than only (111) facet for Ir nanoparticles.
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Affiliation(s)
- Ting Lu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, P. R. China
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27
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Wu QS, Liu JW, Chen SF, Liang HW, Yu SH. Surfactant-free synthesis of SrTiO3 hierarchical structures in ethanol/water mixed solvent at room temperature. CrystEngComm 2015. [DOI: 10.1039/c4ce02228a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
SrTiO3 hierarchical structures can be synthesized in ethanol/water mixed solvent at room temperature without using any structure-directing templates.
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Affiliation(s)
- Qing-Song Wu
- Division of Nanomaterials and Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Department of Chemistry
- University of Science and Technology of China
| | - Jian-Wei Liu
- Division of Nanomaterials and Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Department of Chemistry
- University of Science and Technology of China
| | - Shao-Feng Chen
- Division of Nanomaterials and Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Department of Chemistry
- University of Science and Technology of China
| | - Hai-Wei Liang
- Division of Nanomaterials and Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Department of Chemistry
- University of Science and Technology of China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Department of Chemistry
- University of Science and Technology of China
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28
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Pradhan M, Roy A, Sinha AK, Sahoo R, Deb D, Pal T. Solid-state transformation of single precursor vanadium complex nanostructures to V2O5 and VO2: catalytic activity of V2O5 for oxidative coupling of 2-naphthol. Dalton Trans 2015; 44:1889-99. [DOI: 10.1039/c4dt02863e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid-state transformation of a vanadium complex to V2O5 and VO2 nanostructures and the catalytic activity of V2O5 for the oxidative coupling of 2-naphthol.
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Affiliation(s)
- Mukul Pradhan
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Anindita Roy
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Arun Kumar Sinha
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Ramkrishna Sahoo
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Dibakar Deb
- Department of Chemistry
- Techno India Agartala
- Agartala-799004
- India
| | - Tarasankar Pal
- Department of Chemistry
- Indian Institute of Technology
- Kharagpur-721302
- India
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29
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Friderichs C, Zotov N, Mader W. Synthesis of Monodisperse SrTi1-xZrxO3Nanocubes in Oleate by a Two-Phase Solvothermal Method. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402724] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Zhou Z, Tang H, Sodano HA. Scalable synthesis of morphotropic phase boundary lead zirconium titanate nanowires for energy harvesting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7547-7554. [PMID: 25312483 DOI: 10.1002/adma.201403286] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 08/21/2014] [Indexed: 06/04/2023]
Abstract
Lead zirconium titanate (PZT) nanowires are synthesized using a scalable two-step hydrothermal reaction. The piezo-electric coupling coefficient of the PZT NWs shows the highest value for PZT nano-wires in the literature (80 ± 5 pm/V). A PZT-NW-based nanocomposite is fabri-cated to demonstrate an energy-harvesting application with an open-circuit voltage up to 7 V and a power density up to 2.4 μW/cm(3) .
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Affiliation(s)
- Zhi Zhou
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL, 32611, USA
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31
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Guo X, Wang L, Yue S, Wang D, Lu Y, Song Y, He J. Single-Crystalline Organic–Inorganic Layered Cobalt Hydroxide Nanofibers: Facile Synthesis, Characterization, and Reversible Water-Induced Structural Conversion. Inorg Chem 2014; 53:12841-7. [DOI: 10.1021/ic501812n] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiaodi Guo
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Box 98, 15 Beisanhuan Dong Lu, Beijing 100029, P. R. China
| | - Lianying Wang
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Box 98, 15 Beisanhuan Dong Lu, Beijing 100029, P. R. China
| | - Shuang Yue
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Box 98, 15 Beisanhuan Dong Lu, Beijing 100029, P. R. China
| | - Dongyang Wang
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Box 98, 15 Beisanhuan Dong Lu, Beijing 100029, P. R. China
| | - Yanluo Lu
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Box 98, 15 Beisanhuan Dong Lu, Beijing 100029, P. R. China
| | - Yufei Song
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Box 98, 15 Beisanhuan Dong Lu, Beijing 100029, P. R. China
| | - Jing He
- State Key Laboratory of Chemical
Resource Engineering, Beijing University of Chemical Technology, Box 98, 15 Beisanhuan Dong Lu, Beijing 100029, P. R. China
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32
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Deng S, Xu G, Bai H, Li L, Jiang S, Shen G, Han G. Hydrothermal Synthesis of Single-Crystalline Perovskite PbTiO3 Nanosheets with Dominant (001) Facets. Inorg Chem 2014; 53:10937-43. [DOI: 10.1021/ic501180g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Shiqi Deng
- State Key Laboratory
of Silicon Materials, Department
of Materials Science and Engineering, and Key Laboratory of Advanced Materials and Applications
for Battery of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Gang Xu
- State Key Laboratory
of Silicon Materials, Department
of Materials Science and Engineering, and Key Laboratory of Advanced Materials and Applications
for Battery of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Huiwen Bai
- State Key Laboratory
of Silicon Materials, Department
of Materials Science and Engineering, and Key Laboratory of Advanced Materials and Applications
for Battery of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Lingling Li
- State Key Laboratory
of Silicon Materials, Department
of Materials Science and Engineering, and Key Laboratory of Advanced Materials and Applications
for Battery of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Shan Jiang
- State Key Laboratory
of Silicon Materials, Department
of Materials Science and Engineering, and Key Laboratory of Advanced Materials and Applications
for Battery of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Ge Shen
- State Key Laboratory
of Silicon Materials, Department
of Materials Science and Engineering, and Key Laboratory of Advanced Materials and Applications
for Battery of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Gaorong Han
- State Key Laboratory
of Silicon Materials, Department
of Materials Science and Engineering, and Key Laboratory of Advanced Materials and Applications
for Battery of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
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33
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Lee K, Mazare A, Schmuki P. One-dimensional titanium dioxide nanomaterials: nanotubes. Chem Rev 2014; 114:9385-454. [PMID: 25121734 DOI: 10.1021/cr500061m] [Citation(s) in RCA: 506] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kiyoung Lee
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
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34
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Kim Y, Kook K, Hwang SK, Park C, Cho J. Polymer/Perovskite-type nanoparticle multilayers with multielectric properties prepared from ligand addition-induced layer-by-layer assembly. ACS NANO 2014; 8:2419-2430. [PMID: 24571293 DOI: 10.1021/nn405988d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We introduce an adsorption mechanism for a layer-by-layer (LbL) assembly (i.e., a ligand addition-induced LbL assembly) and demonstrate that the (polymer/perovskite nanoparticle (NP))n nanocomposite films based on the ligand addition LbL exhibit ferroelectric and resistive switching properties. Oleic acid (OA)-stabilized BaTiO3 NPs (OA-BTO NPs) with a size of approximately 8 nm were LbL-assembled with amine-functionalized dendrimers (NH2-dendrimers) using the high affinity between NH2 moieties and Ti ions. The ferroelectric properties of the (NH2-dendrimer/OA-BTO NP)n multilayers were generated by the Ti disorder in the OA-BTO NP unit cell despite the use of sub-10 nm OA-BTO NPs (i.e., OA-BTO NPs), which are near the critical size for ferroelectric properties. Additionally, the (NH2-dendrimer/OA-BTO NP)n multilayers sandwiched between the bottom (platinum) and top (silver or tungsten) electrodes exhibited a resistive switching memory at a relatively low operating voltage below 2 V with a switching speed of approximately 100 ns and an ON/OFF current ratio of approximately 10(4). Furthermore, the ferroelectric and resistive switching properties could be further improved by controlling the bilayer number (n). We believe that our approach can provide a basis for designing and exploiting multifunctional memory electronics based on a variety of perovskite NPs with ferroelectric properties.
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Affiliation(s)
- Younghoon Kim
- Department of Chemical & Biological Engineering, Korea University , Anam-dong, Seongbuk-gu, Seoul 136-713, South Korea
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35
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Ren L, Kotha SP. Centrifugal Jet Spinning for Highly Efficient and Large-scale Fabrication of Barium Titanate Nanofibers. MATERIALS LETTERS 2014; 117:153-157. [PMID: 24563566 PMCID: PMC3928980 DOI: 10.1016/j.matlet.2013.11.103] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The centrifugal jet spinning (CJS) method has been developed to enable large-scale synthesis of barium titanate nanofibers. Barium titanate nanofibers with fiber diameters down to 50 nm and grain sizes around 25 nm were prepared with CJS by spinning a sol-gel solution of barium titanate and poly(vinylpyrrolidone) with subsequent heat treatment at 850 °C. XRD and FTIR analysis demonstrated high purity and tetragonal perovskite structured barium titanate nanofibers. SEM and TEM images confirm the continuous high aspect ratio structure of barium titanate nanofibers after heat treatment. It is demonstrated that the CJS technique offers a highly efficient method for large-scale fabrication of ceramic nanofibers at production rates of up to 0.3 gram/minute.
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Affiliation(s)
- Liyun Ren
- Department of Material Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Shiva P. Kotha
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
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36
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Yang X, Xu G, Ren Z, Wei X, Chao C, Gong S, Shen G, Han G. The hydrothermal synthesis and formation mechanism of single-crystalline perovskite BiFeO3 microplates with dominant (012) facets. CrystEngComm 2014. [DOI: 10.1039/c3ce42488j] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Single-crystal BiFeO3 (BFO) microplates with dominant (012) facets were successfully synthesized by a facile one-pot hydrothermal method. The adsorption behaviour of the organic ligands may play a key role in the formation of the BFO microplates.
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Affiliation(s)
- Xin Yang
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
| | - Gang Xu
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
| | - Zhaohui Ren
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
| | - Xiao Wei
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
| | - Chunying Chao
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
| | - Siyu Gong
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
| | - Ge Shen
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
| | - Gaorong Han
- Department of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027, PR China
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37
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Carretero-Genevrier A, Puig T, Obradors X, Mestres N. Ferromagnetic 1D oxide nanostructures grown from chemical solutions in confined geometries. Chem Soc Rev 2014; 43:2042-54. [DOI: 10.1039/c3cs60288e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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38
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Bo A, Zhan H, Bell J, Zhu H, Gu Y. Mechanical bending properties of sodium titanate (Na2Ti3O7) nanowires. RSC Adv 2014. [DOI: 10.1039/c4ra11753k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report on the mechanical properties of sodium titanate nanowires (Na2Ti3O7 NW) through a combination of bending experiments and theoretical analysis.
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Affiliation(s)
- Arixin Bo
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane, Australia
| | - Haifei Zhan
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane, Australia
- Department of Material Science and NanoEngineering
| | - John Bell
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane, Australia
| | - Huaiyong Zhu
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane, Australia
| | - Yuantong Gu
- School of Chemistry
- Physics and Mechanical Engineering
- Queensland University of Technology
- Brisbane, Australia
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39
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Lin X, Younis A, Xiong X, Dong K, Chu D, Li S. Bipolar resistive switching characteristics in LaTiO3 nanosheets. RSC Adv 2014. [DOI: 10.1039/c4ra01626b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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40
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Nayak S, Sahoo B, Chaki TK, Khastgir D. Facile preparation of uniform barium titanate (BaTiO3) multipods with high permittivity: impedance and temperature dependent dielectric behavior. RSC Adv 2014. [DOI: 10.1039/c3ra44815k] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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41
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Li P, Liu C, Wu G, Heng Y, Lin S, Ren A, Lv K, Xiao L, Shi W. Solvothermal synthesis and visible light-driven photocatalytic degradation for tetracycline of Fe-doped SrTiO3. RSC Adv 2014. [DOI: 10.1039/c4ra06630h] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper, Fe-doped SrTiO3 (FSTO) photocatalysts were successfully prepared via a facile solvothermal method, and their photocatalytic activities for degrading tetracycline (TC) under visible light irradiation were examined.
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Affiliation(s)
- Ping Li
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Chunbo Liu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Guoling Wu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Yang Heng
- School of Hydraulic
- Energy and Power Engineering
- Yangzhou University
- Yangzhou, P. R. China
| | - Shuang Lin
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Ao Ren
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Kehan Lv
- School of Petrochemical Engineering
- Changzhou University
- Changzhou, P. R. China
| | - Lisong Xiao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang, P. R. China
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42
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Zhou Z, Tang H, Sodano HA. Vertically aligned arrays of BaTiO(3) nanowires. ACS APPLIED MATERIALS & INTERFACES 2013; 5:11894-11899. [PMID: 24191721 DOI: 10.1021/am403587q] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Barium titanate (BaTiO3) nanowires have gained considerable research interest due to their lead-free composition and strong energy conversion efficiency. However, most research has focused on free-standing BaTiO3 nanowires, which are hard to apply for sensing and energy harvesting. Here, a novel method for the growth of vertically aligned BaTiO3 nanowire arrays on a conductive substrate is developed, and their electromechanical coupling behavior is directly evaluated to yield the strain coupling coefficient. The preparation of vertically aligned BaTiO3 nanowire arrays is based on a two-step hydrothermal reaction by first growing oriented rutile TiO2 nanowire arrays and then converting them to BaTiO3 while simultaneously retaining their morphology. A refined piezoelectric force microscopy (PFM) testing method is applied to demonstrate the piezoelectric behavior of BaTiO3 nanowires in the longitude direction. The piezoelectric response (d33 = 43 ± 2 pm/V) of the BaTiO3 nanowires is measured to demonstrate their potential application in sensors, energy harvesting, and micro-electromechanical systems.
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Affiliation(s)
- Zhi Zhou
- Department of Material Science and Engineering and ‡Department of Mechanical and Aerospace Engineering, University of Florida , Gainesville, Florida 32611, United States
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43
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Huang L, Liu S, Van Tassell BJ, Liu X, Byro A, Zhang H, Leland ES, Akins DL, Steingart DA, Li J, O'Brien S. Structure and performance of dielectric films based on self-assembled nanocrystals with a high dielectric constant. NANOTECHNOLOGY 2013; 24:415602. [PMID: 24060685 DOI: 10.1088/0957-4484/24/41/415602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Self-assembled films built from nanoparticles with a high dielectric constant are attractive as a foundation for new dielectric media with increased efficiency and range of operation, due to the ability to exploit nanofabrication techniques and emergent electrical properties originating from the nanoscale. However, because the building block is a discrete one-dimensional unit, it becomes a challenge to capture potential enhancements in dielectric performance in two or three dimensions, frequently due to surface effects or the presence of discontinuities. This is a recurring theme in nanoparticle film technology when applied to the realm of thin film semiconductor and device electronics. We present the use of chemically synthesized (Ba,Sr)TiO3 nanocrystals, and a novel deposition-polymerization technique, as a means to fabricate the dielectric layer. The effective dielectric constant of the film is tunable according to nanoparticle size, and effective film dielectric constants of up to 34 are enabled. Wide area and multilayer dielectrics of up to 8 cm(2) and 190 nF are reported, for which the building block is an 8 nm nanocrystal. We describe models for assessing dielectric performance, and distinct methods for improving the dielectric constant of a nanocrystal thin film. The approach relies on evaporatively driven assembly of perovskite nanocrystals with uniform size distributions in a tunable 7-30 nm size range, coupled with the use of low molecular weight monomer/polymer precursor chemistry that can infiltrate the porous nanocrystal thin film network post assembly. The intercrystal void space (low k dielectric volume fraction) is minimized, while simultaneously promoting intercrystal connectivity and maximizing volume fraction of the high k dielectric component. Furfuryl alcohol, which has good affinity to the surface of (Ba,Sr)TiO3 nanocrystals and miscibility with a range of solvents, is demonstrated to be ideal for the production of nanocomposites. The nanocrystal/furfuryl alcohol dispersions are suitable for the fabrication of thin films by chemical deposition techniques, including spin-coating, printing or a spraying process. To demonstrate the application of this technique to device fabrication, a multilayer capacitor with capacitance of 0.83 nF mm(-2) at 1 MHz is presented.
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Affiliation(s)
- Limin Huang
- The CUNY Energy Institute, City University of New York, Steinman Hall, 160 Convent Avenue, The City College of New York, New York, NY 10031, USA. Department of Chemistry, South University of Science and Technology of China, Shenzhen 518005, People's Republic of China
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Abstract
In this review, the main concept of ferroelectricity of perovskite oxides and related materials at nanometer scale and existing difficulties in the synthesis of those nanocrystals are discussed. Important effects, such as depolarization field and size effect, on the existence of ferroelectricity in perovskite nanocrystals are deliberated. In the discussion of modeling works, different theoretical calculations are pinpointed focusing on their studies of lattice dynamics, phase transitions, new origin of ferroelectricity in nanostructures, etc. As the major part of this review, recent research progress in the facile synthesis, characterization and various applications of perovskite ferroelectric nanomaterials, such as BaTiO₃, PbTiO₃, PbZrO₃, and BiFeO₃, are also scrutinized. Perspectives concerning the future direction of ferroelectric nanomaterials research and its potential applications in renewable energy, etc., are presented. This review provides an overview in this area and guidance for further studies in perovskite ferroelectric nanomaterials and their applications.
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Affiliation(s)
- Nurxat Nuraje
- Department of Materials Science & Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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45
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Yang J, Zhang J, Liang C, Wang M, Zhao P, Liu M, Liu J, Che R. Ultrathin BaTiO3 nanowires with high aspect ratio: a simple one-step hydrothermal synthesis and their strong microwave absorption. ACS APPLIED MATERIALS & INTERFACES 2013; 5:7146-7151. [PMID: 23819434 DOI: 10.1021/am4014506] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, we report the facile synthesis of ultrathin barium titanate (BaTiO3) nanowires with gram-level yield via a simple one-step hydrothermal treatment. Our BaTiO3 nanowires have unique features: single crystalline, uniform size distribution and ultra high aspect ratio. The synergistic effects including both Ostwald ripening and cation exchange reaction are responsible for the growth of the ultrathin BaTiO3 nanowires. The microwave absorption capability of the ultrathin BaTiO3 nanowires is improved compared to that of BaTiO3 nanotorus,1 with a maximum reflection loss as high as -24.6 dB at 9.04 GHz and an absorption bandwidth of 2.4 GHz (<-10 dB). Our method has some novel advantages: simple, facile, low cost and high synthesis yield, which might be developed to prepare other ferroelectric nanostructures. The strong microwave absorption property of the ultrathin BaTiO3 nanowires indicates that these nanowires could be used as promising materials for microwave-absorption and stealth camouflage techniques.
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Affiliation(s)
- Jin Yang
- Department of Materials Science and Advanced Materials Laboratory, Fudan University, Shanghai 200438, P. R. China
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46
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Guo H, Ward TZ. Fabrication of spatially confined complex oxides. JOURNAL OF VISUALIZED EXPERIMENTS : JOVE 2013:e50573. [PMID: 23851706 DOI: 10.3791/50573] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Complex materials such as high Tc superconductors, multiferroics, and colossal magnetoresistors have electronic and magnetic properties that arise from the inherent strong electron correlations that reside within them. These materials can also possess electronic phase separation in which regions of vastly different resistive and magnetic behavior can coexist within a single crystal alloy material. By reducing the scale of these materials to length scales at and below the inherent size of the electronic domains, novel behaviors can be exposed. Because of this and the fact that spin-charge-lattice-orbital order parameters each involve correlation lengths, spatially reducing these materials for transport measurements is a critical step in understanding the fundamental physics that drives complex behaviors. These materials also offer great potential to become the next generation of electronic devices (1-3). Thus, the fabrication of low dimensional nano- or micro-structures is extremely important to achieve new functionality. This involves multiple controllable processes from high quality thin film growth to accurate electronic property characterization. Here, we present fabrication protocols of high quality microstructures for complex oxide manganite devices. Detailed descriptions and required equipment of thin film growth, photo-lithography, and wire-bonding are presented.
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Affiliation(s)
- Hangwen Guo
- Materials Science and Technology Division, Oak Ridge National Laboratory
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47
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48
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Lozano-Sánchez LM, Lee SW, Sekino T, Rodríguez-González V. Practical microwave-induced hydrothermal synthesis of rectangular prism-like CaTiO3. CrystEngComm 2013. [DOI: 10.1039/c3ce27040h] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Jo MR, Jung YS, Kang YM. Tailored Li4Ti5O12 nanofibers with outstanding kinetics for lithium rechargeable batteries. NANOSCALE 2012; 4:6870-6875. [PMID: 23026842 DOI: 10.1039/c2nr31675g] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report on the synthesis of one-dimensional (1D) Li(4)Ti(5)O(12) nanofibers through electrospinning and their outstanding electrochemical performances. Li(4)Ti(5)O(12) with a spinel structure is a promising candidate anode material for lithium rechargeable batteries due to its well-known zero-strain merits. In order to improve the electronic properties of spinel Li(4)Ti(5)O(12), which are intrinsically poor, we processed the material into a nanofiber type of architecture to shorten the Li(+) and electron transport distance using a versatile electrospinning approach. The electrospun Li(4)Ti(5)O(12) nanofiber showed significantly enhanced discharging/charging properties, even at high rates that exceeded 10 C, demonstrating that the nanofiber offers an attractive architecture for enhanced kinetics.
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Affiliation(s)
- Mi Ru Jo
- Department of Chemistry, Dongguk University-Seoul, 100715 Seoul, Republic of Korea
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50
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Chao C, Ren Z, Zhu Y, Xiao Z, Liu Z, Xu G, Mai J, Li X, Shen G, Han G. Self-Templated Synthesis of Single-Crystal and Single-Domain Ferroelectric Nanoplates. Angew Chem Int Ed Engl 2012; 51:9283-7. [DOI: 10.1002/anie.201204792] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Indexed: 11/06/2022]
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