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Grünebohm A, Marathe M, Khachaturyan R, Schiedung R, Lupascu DC, Shvartsman VV. Interplay of domain structure and phase transitions: theory, experiment and functionality. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 34:073002. [PMID: 34731841 DOI: 10.1088/1361-648x/ac3607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
Domain walls and phase boundaries are fundamental ingredients of ferroelectrics and strongly influence their functional properties. Although both interfaces have been studied for decades, often only a phenomenological macroscopic understanding has been established. The recent developments in experiments and theory allow to address the relevant time and length scales and revisit nucleation, phase propagation and the coupling of domains and phase transitions. This review attempts to specify regularities of domain formation and evolution at ferroelectric transitions and give an overview on unusual polar topological structures that appear as transient states and at the nanoscale. We survey the benefits, validity, and limitations of experimental tools as well as simulation methods to study phase and domain interfaces. We focus on the recent success of these tools in joint scale-bridging studies to solve long lasting puzzles in the field and give an outlook on recent trends in superlattices.
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Affiliation(s)
- Anna Grünebohm
- Interdisciplinary Centre for Advanced Materials Simulations (ICAMS), Ruhr-University Bochum, 44801 Bochum, Germany
| | - Madhura Marathe
- Interdisciplinary Centre for Advanced Materials Simulations (ICAMS), Ruhr-University Bochum, 44801 Bochum, Germany
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
- Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Ruben Khachaturyan
- Interdisciplinary Centre for Advanced Materials Simulations (ICAMS), Ruhr-University Bochum, 44801 Bochum, Germany
| | - Raphael Schiedung
- Interdisciplinary Centre for Advanced Materials Simulations (ICAMS), Ruhr-University Bochum, 44801 Bochum, Germany
- National Institute for Material Science (NIMS), Tsukuba 305-0047, Japan
| | - Doru C Lupascu
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
| | - Vladimir V Shvartsman
- Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141 Essen, Germany
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52
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Fadakar Sarkandi A, Montazer M, Mahmoudi Rad M. Oxygenated‐bacterial‐cellulose nanofibers with hydrogel, antimicrobial, and controlled oxygen release properties for rapid wound healing. J Appl Polym Sci 2021. [DOI: 10.1002/app.51974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Majid Montazer
- Textile Engineering Department, Functional Fibrous Structures & Environmental Enhancement (FFSEE), Amirkabir Nanotechnology Research Institute (ANTRI) Amirkabir University of Technology Tehran Iran
| | - Mahnaz Mahmoudi Rad
- Skin Research Center Shahid Beheshti University of Medical Sciences Tehran Iran
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Wrzesińska A, Khort A, Witkowski M, Szczytko J, Ryl J, Gurgul J, Kharitonov DS, Łątka K, Szumiata T, Wypych-Puszkarz A. Structural, electrical, and magnetic study of La-, Eu-, and Er- doped bismuth ferrite nanomaterials obtained by solution combustion synthesis. Sci Rep 2021; 11:22746. [PMID: 34815455 PMCID: PMC8610975 DOI: 10.1038/s41598-021-01983-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 11/08/2021] [Indexed: 11/23/2022] Open
Abstract
In this work, the multiferroic bismuth ferrite materials Bi0.9RE0.1FeO3 doped by rare-earth (RE = La, Eu, and Er) elements were obtained by the solution combustion synthesis. Structure, electrical, and magnetic properties of prepared samples were investigated by X-ray photoelectron spectroscopy, Mössbauer spectroscopy, electrical hysteresis measurement, broadband dielectric spectroscopy, and SQUID magnetometry. All obtained nanomaterials are characterized by spontaneous electrical polarization, which confirmed their ferroelectric properties. Investigation of magnetic properties at 300.0 K and 2.0 K showed that all investigated Bi0.9RE0.1FeO3 ferrites possess significantly higher magnetization in comparison to bismuth ferrites obtained by different methods. The highest saturation magnetisation of 5.161 emu/g at 300.0 K was observed for the BLaFO sample, while at 2.0 K it was 12.07 emu/g for the BErFO sample. Several possible reasons for these phenomena were proposed and discussed.
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Affiliation(s)
| | - Alexander Khort
- KTH Royal Institute of Technology, Stockholm, Sweden. .,National University of Science and Technology "MISIS", Moscow, Russia.
| | | | - Jacek Szczytko
- University of Warsaw, Pasteura 1, 02-093, Warsaw, Poland
| | - Jacek Ryl
- Gdańsk University of Technology, 11/12 Narutowicza st, 80-233, Gdańsk, Poland
| | - Jacek Gurgul
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30239, Kraków, Poland
| | - Dmitry S Kharitonov
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30239, Kraków, Poland.,Research and Development Center of Technology for Industry, Ludwika Warynskiego 3A, 00645, Warsaw, Poland
| | - Kazimierz Łątka
- Marian Smoluchowski Institute of Physics, Jagiellonian University, Łojasiewicza 11, 30-348, Kraków, Poland
| | - Tadeusz Szumiata
- Kazimierz Pulaski University of Technology and Humanities in Radom, Stasieckiego Str. 54, 26-600, Radom, Poland
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Kim DH, Lee SJ, Theerthagiri J, Choi M, Jung J, Yu Y, Im KS, Jung HJ, Nam SY, Choi MY. In-situ thermal phase transition and structural investigation of ferroelectric tetragonal barium titanate nanopowders with pseudo-cubic phase. CHEMOSPHERE 2021; 283:131218. [PMID: 34147976 DOI: 10.1016/j.chemosphere.2021.131218] [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: 05/17/2021] [Revised: 06/04/2021] [Accepted: 06/10/2021] [Indexed: 06/12/2023]
Abstract
Optimization and miniaturization of existing electronic devices require the development of advanced nanostructured materials with high phase and structural purity. Over the past decade, barium titanate (BaTiO3) has attracted considerable attention due to its outstanding ferroelectric and dielectric properties. The present study involved the investigation of the phase transition and structural stability of tetragonal BaTiO3 nanopowders with pseudo-cubic phase using an in-situ high resolution and high temperature X-ray diffraction method. Under ambient conditions, the coexistence the tetragonal and cubic phases with weight fractions of 75.7% and 24.3%, respectively, was determined in BaTiO3. In the temperature range of 25 °C-300 °C, phase boundaries of BaTiO3 (180 nm in size) exhibiting several phases were detected. The phase transformation behavior, relative crystal phase content, lattice parameters, crystallite size, and tetragonality of the BaTiO3 nanopowders were established by the Rietveld refinement method at the onset temperature from 25 °C to 300 °C. Up to 150 °C, the nanopowders exhibited a complete transition of the cubic phase. Additionally, a complete tetragonal to cubic transformation was accomplished by a decrease of tetragonality at 125 °C and an increase in the crystallite size at 300 °C.
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Affiliation(s)
- Dong Hyun Kim
- Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, Republic of Korea
| | - Seung Jun Lee
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Jayaraman Theerthagiri
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Moonhee Choi
- Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, Republic of Korea
| | - Jongsuk Jung
- MLCC Development Group, R&D Center, Samsung Electro-Mechanics, 150, Maeyeong-Ro, Suwon, 16674, Republic of Korea
| | - Yiseul Yu
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Kwang Seop Im
- Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Hyeon Jin Jung
- Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology, 101, Soho-Ro, Jinju, 52851, Republic of Korea.
| | - Sang Yong Nam
- Department of Materials Engineering and Convergence Technology, Gyeongsang National University, Jinju, 52828, Republic of Korea.
| | - Myong Yong Choi
- Core-Facility Center for Photochemistry & Nanomaterials, Department of Chemistry (BK21 FOUR), Research Institute of Natural Sciences, Gyeongsang National University, Jinju, 52828, Republic of Korea.
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Dou L, Lin YH, Nan CW. An Overview of Linear Dielectric Polymers and Their Nanocomposites for Energy Storage. Molecules 2021; 26:molecules26206148. [PMID: 34684728 PMCID: PMC8537730 DOI: 10.3390/molecules26206148] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 11/16/2022] Open
Abstract
As one of the most important energy storage devices, dielectric capacitors have attracted increasing attention because of their ultrahigh power density, which allows them to play a critical role in many high-power electrical systems. To date, four typical dielectric materials have been widely studied, including ferroelectrics, relaxor ferroelectrics, anti-ferroelectrics, and linear dielectrics. Among these materials, linear dielectric polymers are attractive due to their significant advantages in breakdown strength and efficiency. However, the practical application of linear dielectrics is usually severely hindered by their low energy density, which is caused by their relatively low dielectric constant. This review summarizes some typical studies on linear dielectric polymers and their nanocomposites, including linear dielectric polymer blends, ferroelectric/linear dielectric polymer blends, and linear polymer nanocomposites with various nanofillers. Moreover, through a detailed analysis of this research, we summarize several existing challenges and future perspectives in the research area of linear dielectric polymers, which may propel the development of linear dielectric polymers and realize their practical application.
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Affiliation(s)
- Lvye Dou
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (L.D.); (C.-W.N.)
- Foshan (Southern China) Institute for New Materials, Foshan 528000, China
| | - Yuan-Hua Lin
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (L.D.); (C.-W.N.)
- Correspondence: or
| | - Ce-Wen Nan
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China; (L.D.); (C.-W.N.)
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Abstract
Chemically driven thermal wave triggers high energy release rate in covalently-bonded molecular energetic materials. Molecular ferroelectrics bridge thermal wave and electrical energy by pyroelectric associated with heating frequency, thermal mass and heat transfer. Herein we design energetic molecular ferroelectrics consisting of imidazolium cations (energetic ion) and perchlorate anions (oxidizer), and describe its thermal wave energy conversion with a specific power of 1.8 kW kg-1. Such a molecular ferroelectric crystal shows an estimated detonation velocity of 7.20 ± 0.27 km s-1 comparable to trinitrotoluene and hexanitrostilbene. A polarization-dependent heat transfer and specific power suggests the role of electron-phonon interaction in tuning energy density of energetic molecular ferroelectrics. These findings represent a class of molecular ferroelectric energetic compounds for emerging energy applications demanding high power density.
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Zou D, Li J, Deng J, Jin Y, Chen M. Continuous Preparation of Size-Controllable BaTiO3 Nanoparticles in a Rotor–Stator Spinning Disk Reactor. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02152] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Danrui Zou
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
| | - Jun Li
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
| | - Jie Deng
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
| | - Yang Jin
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
| | - Ming Chen
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, People’s Republic of China
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Clabel H JL, Nicolodelli G, Lozano C G, G Rivera VA, Ferreira SO, Pinto AH, Li MS, Marega E. The extrinsic nature of double broadband photoluminescence from the BaTiO 3 perovskite: generation of white light emitters. Phys Chem Chem Phys 2021; 23:18694-18706. [PMID: 34612407 DOI: 10.1039/d1cp01765a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The electronic properties of BaTiO3 perovskite oxides are not completely understood, despite their excellent electro-optical performance and potential for light generation. Particularly, when there is multiple peak formation in the photoluminescence spectra, their origins are not discussed. Their luminescence spectra reveal an unexpected thermodynamic relationship between the core excitonic states and the surface of the BaTiO3. These results give a broad insight into the origins of the emission properties of perovskite oxides. The self-trapped excitons contribution to the broadbands highlights their extrinsic origin. Through spectroscopy techniques and parallel factor analysis (PARAFAC) modeling, we demonstrate that additional broadbands are sensitive to extrinsic defects, type ν-CH3, a product of decomposition of 2-propanol. The presence of C-H bonds shows the dependence with the calcination temperature and the increase of the lattice expansion coefficient until 4.7 × 10-6 K-1 resulting in the contribution to the change of band gap with the temperature ((dEg/dT)P). In this work, we correlated the electronic properties of BaTiO3 with intrinsic and extrinsic defects and elucidated the presence of additional broadbands. This approach differentiates the contributions of excitonic states and surfaces, which is necessary to understand the electronic properties of perovskite oxides.
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Affiliation(s)
- J L Clabel H
- Physics Institute of São Carlos, University of São Paulo, P. O. Box 369, 13560-970, São Carlos, SP, Brazil.
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Smaranda I, Nila A, Ganea P, Daescu M, Zgura I, Ciobanu RC, Trandabat A, Baibarac M. The Influence of the Ceramic Nanoparticles on the Thermoplastic Polymers Matrix: Their Structural, Optical, and Conductive Properties. Polymers (Basel) 2021; 13:polym13162773. [PMID: 34451312 PMCID: PMC8402000 DOI: 10.3390/polym13162773] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/12/2021] [Accepted: 08/16/2021] [Indexed: 11/16/2022] Open
Abstract
This paper prepared composites under the free membranes form that are based on thermoplastic polymers of the type of polyurethane (TPU) and polyolefin (TPO), which are blended in the weight ratio of 2:1, and ceramic nanoparticles (CNs) such as BaSrTiO3 and SrTiO3. The structural, optical, and conductive properties of these new composite materials are reported. The X-ray diffraction studies highlight a cubic crystalline structure of these CNs. The main variations in the vibrational properties of the TPU:TPO blend induced by CNs consist of the following: (i) the increase in the intensity of the Raman line of 1616 cm-1; (ii) the down-shift of the IR band from 800 to 791 cm-1; (iii) the change of the ratio between the absorbance of IR bands localized in the spectral range 950-1200 cm-1; and (iv) the decrease in the absorbance of the IR band from 1221 cm-1. All these variations were correlated with a preferential adsorption of thermoplastic polymers on the CNs surface. A photoluminescence (PL) quenching process of thermoplastic polymers is demonstrated to occur in the presence of CNs. The anisotropic PL measurements have highlighted a change in the angle of the binding of the TPU:TPO blend, which varies from 23.7° to ≈49.3° and ≈53.4°, when the concentration of BaSrTiO3 and SrTiO3 CNs, respectively, is changed from 0 to 25 wt. %. Using dielectric spectroscopy, two mechanisms are invoked to take place in the case of the composites based on TPU:TPO blends and CNs, i.e., one regarding the type of the electrical conduction and another specifying the dielectric-dipolar relaxation processes.
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Affiliation(s)
- Ion Smaranda
- Laboratory Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, R077125 Bucharest, Romania; (I.S.); (A.N.); (P.G.); (M.D.); (I.Z.)
| | - Andreea Nila
- Laboratory Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, R077125 Bucharest, Romania; (I.S.); (A.N.); (P.G.); (M.D.); (I.Z.)
| | - Paul Ganea
- Laboratory Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, R077125 Bucharest, Romania; (I.S.); (A.N.); (P.G.); (M.D.); (I.Z.)
| | - Monica Daescu
- Laboratory Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, R077125 Bucharest, Romania; (I.S.); (A.N.); (P.G.); (M.D.); (I.Z.)
| | - Irina Zgura
- Laboratory Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, R077125 Bucharest, Romania; (I.S.); (A.N.); (P.G.); (M.D.); (I.Z.)
| | - Romeo C. Ciobanu
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering, Technical University Gh. Asachi Iasi, Boulevard Profesor Dimitrie Mangeron 67, R070050 Iasi, Romania; (R.C.C.); (A.T.)
| | - Alexandru Trandabat
- Department of Electrical Measurements and Materials, Faculty of Electrical Engineering, Technical University Gh. Asachi Iasi, Boulevard Profesor Dimitrie Mangeron 67, R070050 Iasi, Romania; (R.C.C.); (A.T.)
| | - Mihaela Baibarac
- Laboratory Optical Processes in Nanostructured Materials, National Institute of Materials Physics, Atomistilor Street 405A, R077125 Bucharest, Romania; (I.S.); (A.N.); (P.G.); (M.D.); (I.Z.)
- Correspondence: ; Tel.: + 40-21-3690170
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Wei Y, Jiang S, Li X, Li J, Dong Y, Shi SQ, Li J, Fang Z. "Green" Flexible Electronics: Biodegradable and Mechanically Strong Soy Protein-Based Nanocomposite Films for Human Motion Monitoring. ACS APPLIED MATERIALS & INTERFACES 2021; 13:37617-37627. [PMID: 34313436 DOI: 10.1021/acsami.1c09209] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Soy protein isolate (SPI) is envisioned as a promising alternative to fabricate "green" flexible electronics, showing great potential in the field of flexible wearable electronics. However, it is challenging to simultaneously achieve conductive film-based human motion-monitoring strain sensors with reliable fatigue resistance, robust mechanical property, environmental degradability, and sensing capability of human motions. Herein, we prepared a series of SPI-based nanocomposite films by embedding a surface-hydroxylated high-dielectric constant inorganic filler, BaTiO3, (HBT) as interspersed nanoparticles into a biodegradable SPI substrate. In particular, the fabricated film comprising 0.5 wt % HBT and glycerin (GL), namely, SPI-HBT0.5-GL0.5, presents multifunctional properties, including a combination of excellent toughness, tensile strength, conductivity, translucence, recyclability, and excellent thermal stability. Meanwhile, this multifunctional film could be simply degraded in phosphate buffered saline solution and does not cause any pollution to the environment. Attractively, wearable sensors prepared with this particular material (SPI-HBT0.5-GL0.5) displayed excellent biocompatibility, prevented the occurrence of an immune response, and could accurately monitor various types of human joint motions and successfully remain operable after 10,000 cycles. These properties make the developed SPI-based film a great candidate in formulating biobased and multifunctional wearable electronics.
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Affiliation(s)
- Yanqiang Wei
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Shuaicheng Jiang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Xiaona Li
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Jiongjiong Li
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Youming Dong
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Sheldon Q Shi
- Department of Mechanical Engineering, University of North Texas, Denton 76203, United States
| | - Jianzhang Li
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
- College of Materials Science and Engineering, Beijing Forestry University, Beijing 100083, China
| | - Zhen Fang
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
- Department of Biochemistry & Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, Michigan 48824, United States
- Great Lakes Bioenergy Research Center, Michigan State University, 1129 Farm Lane, East Lansing, Michigan 48824, United States
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He J, Duan M, Wang X, Wang M, Jing B, Liu S, Fang S. Copolymerization behavior of diallyldimethylammonium chloride‐nonionic macromonomer in water‐ether mixture solution and flotation performance of the copolymer for treating oily wastewater. J Appl Polym Sci 2021. [DOI: 10.1002/app.50706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jie He
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Ming Duan
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Xiujun Wang
- Beijing Research Center China National Offshore Oil Corporation Beijing China
- State Key Laboratory Offshore Oilfield Exploitation Beijing China
| | - Manlin Wang
- Institute of Water Environment Research Chengdu Academy of environmental protection science Chengdu China
| | - Bo Jing
- State Key Laboratory Offshore Oilfield Exploitation Beijing China
| | - Shuai Liu
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
| | - Shenwen Fang
- School of Chemistry and Chemical Engineering Southwest Petroleum University Chengdu China
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Zamperlin N, Ceccato R, Fontana M, Pegoretti A, Chiappini A, Dirè S. Effect of Hydrothermal Treatment and Doping on the Microstructural Features of Sol-Gel Derived BaTiO 3 Nanoparticles. MATERIALS 2021; 14:ma14154345. [PMID: 34361539 PMCID: PMC8348855 DOI: 10.3390/ma14154345] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 12/02/2022]
Abstract
Barium Titanate (BaTiO3) is one of the most promising lead-free ferroelectric materials for the development of piezoelectric nanocomposites for nanogenerators and sensors. The miniaturization of electronic devices is pushing researchers to produce nanometric-sized particles to be embedded into flexible polymeric matrices. Here, we present the sol-gel preparation of crystalline BaTiO3 nanoparticles (NPs) obtained by reacting barium acetate (Ba(CH3COO)2) and titanium (IV) isopropoxide (Ti(OiPr)4). The reaction was performed both at ambient conditions and by a hydrothermal process carried on at 200 °C for times ranging from 2 to 8 h. Doped BaTiO3 nanoparticles were also produced by addition of Na, Ca, and Bi cations. The powders were annealed at 900 °C in order to improve NPs crystallinity and promote the cubic-to-tetragonal (c⟶t) phase transformation. The microstructural features of nanoparticles were investigated in dependence of both the hydrothermal reaction time and the presence of dopants. It is found that short hydrothermal treatment (2 h) can produce BaTiO3 spherical and more homogeneous nanoparticles with respect to longer hydrothermal treatments (4 h, 6 h, 8 h). These particles (2 h) are characterized by decreased dimension (approx. 120 nm), narrower size distribution and higher tetragonality (1.007) in comparison with particles prepared at ambient pressure (1.003). In addition, the short hydrothermal treatment (2 h) produces particles with tetragonality comparable to the one obtained after the longest process (8 h). Finally, dopants were found to affect to different extents both the c⟶t phase transformation and the crystallite sizes.
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Affiliation(s)
- Nico Zamperlin
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
- Correspondence:
| | - Riccardo Ceccato
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
| | - Marco Fontana
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
- Institute of Mechanical Intelligence, Scuola Superiore Sant’Anna, Piazza Martiri della Libertà 33, 56127 Pisa, Italy
| | - Alessandro Pegoretti
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
- National Interuniversity Consortium of Materials Science and Technology (INSTM), Via G. Giusti, 9, 50121 Firenze, Italy
| | - Andrea Chiappini
- Institute of Photonics and Nanotechnologies (IFN-CNR), CSMFO Laboratory and Fondazione Bruno Kessler (FBK) Photonics Unit, Via alla Cascata 56/C, Povo, 38123 Trento, Italy;
| | - Sandra Dirè
- Department of Industrial Engineering, University of Trento, Via Sommarive 9, 38123 Trento, Italy; (R.C.); (M.F.); (A.P.); (S.D.)
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Ray SK, Cho J, Hur J. A critical review on strategies for improving efficiency of BaTiO 3-based photocatalysts for wastewater treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 290:112679. [PMID: 33901825 DOI: 10.1016/j.jenvman.2021.112679] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/08/2021] [Accepted: 04/17/2021] [Indexed: 06/12/2023]
Abstract
Barium titanate (BaTiO3) photocatalysts with perovskite structures are promising candidates for the effective removal of hazardous organic pollutants from water/wastewater owing to several advantages, including low cost, non-toxicity, high stability, environmental friendliness, favorable band positions, high oxygen vacancies, multiple crystal phases, rapid migration of charge carriers at the surface, band bending, spontaneous polarization, and easy tailoring of the sizes and morphologies. However, this high dielectric/ferroelectric material is only active in UV light (band gap: 3.2 eV), which reduces the photocatalytic degradation performance. To make barium titanate more suitable for photocatalysis, the surfaces of the powders can be modified to broaden the absorption band. In this paper, various strategies for improving photocatalysis of barium titanate for removing organic pollutants (mostly dyes and drugs) from water/wastewater are critically reviewed. They include modifying the sizes and morphologies of the particles by varying the reaction times and synthesis temperatures, doping with metals/non-metals, loading with noble metal NPs (Ag and Au), and fabrication of heterojunction photocatalysts (conventional type II and Z-scheme). The current challenges and possible future directions of BaTiO3-based materials are also discussed. This comprehensive review is expected to advance the design of highly efficient BaTiO3-based materials for photocatalytic applications in water/wastewater treatment.
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Affiliation(s)
- Schindra Kumar Ray
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea.
| | - Jinwoo Cho
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea
| | - Jin Hur
- Department of Environment and Energy, Sejong University, Seoul, 05006, South Korea.
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65
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Ahamed M, Akhtar MJ, Khan MAM, Alaizeri ZM, Alhadlaq H. Facile Synthesis of Zn-Doped Bi 2O 3 Nanoparticles and Their Selective Cytotoxicity toward Cancer Cells. ACS OMEGA 2021; 6:17353-17361. [PMID: 34278121 PMCID: PMC8280700 DOI: 10.1021/acsomega.1c01467] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 06/03/2021] [Indexed: 05/18/2023]
Abstract
Bismuth (III) oxide nanoparticles (Bi2O3 NPs) have shown great potential for biomedical applications because of their tunable physicochemical properties. In this work, pure and Zn-doped (1 and 3 mol %) Bi2O3 NPs were synthesized by a facile chemical route and their cytotoxicity was examined in cancer cells and normal cells. The X-ray diffraction results show that the tetragonal phase of β-Bi2O3 remains unchanged after Zn-doping. Transmission electron microscopy and scanning electron microscopy images depicted that prepared particles were spherical with smooth surfaces and the homogeneous distribution of Zn in Bi2O3 with high-quality lattice fringes without distortion. Photoluminescence spectra revealed that intensity of Bi2O3 NPs decreases with increasing level of Zn-doping. Biological data showed that Zn-doped Bi2O3 NPs induce higher cytotoxicity to human lung (A549) and liver (HepG2) cancer cells as compared to pure Bi2O3 NPs, and cytotoxic intensity increases with increasing concentration of Zn-doping. Mechanistic data indicated that Zn-doped Bi2O3 NPs induce cytotoxicity in both types of cancer cells through the generation of reactive oxygen species and caspase-3 activation. On the other hand, biocompatibility of Zn-doped Bi2O3 NPs in normal cells (primary rat hepatocytes) was greater than that of pure Bi2O3 NPs and biocompatibility improves with increasing level of Zn-doping. Altogether, this is the first report highlighting the role of Zn-doping in the anticancer activity of Bi2O3 NPs. This study warrants further research on the antitumor activity of Zn-doped Bi2O3 NPs in suitable in vivo models.
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Affiliation(s)
- Maqusood Ahamed
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - Mohd Javed Akhtar
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - M. A. Majeed Khan
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
| | - ZabnAllah M. Alaizeri
- Department
of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hisham Alhadlaq
- King
Abdullah Institute for Nanotechnology, King
Saud University, Riyadh 11451, Saudi Arabia
- Department
of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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66
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Xu Q, Gao X, Zhao S, Liu YN, Zhang D, Zhou K, Khanbareh H, Chen W, Zhang Y, Bowen C. Construction of Bio-Piezoelectric Platforms: From Structures and Synthesis to Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008452. [PMID: 34033180 DOI: 10.1002/adma.202008452] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/28/2021] [Indexed: 05/04/2023]
Abstract
Piezoelectric materials, with their unique ability for mechanical-electrical energy conversion, have been widely applied in important fields such as sensing, energy harvesting, wastewater treatment, and catalysis. In recent years, advances in material synthesis and engineering have provided new opportunities for the development of bio-piezoelectric materials with excellent biocompatibility and piezoelectric performance. Bio-piezoelectric materials have attracted interdisciplinary research interest due to recent insights on the impact of piezoelectricity on biological systems and their versatile biomedical applications. This review therefore introduces the development of bio-piezoelectric platforms from a broad perspective and highlights their design and engineering strategies. State-of-the-art biomedical applications in both biosensing and disease treatment will be systematically outlined. The relationships between the properties, structure, and biomedical performance of the bio-piezoelectric materials are examined to provide a deep understanding of the working mechanisms in a physiological environment. Finally, the development trends and challenges are discussed, with the aim to provide new insights for the design and construction of future bio-piezoelectric materials.
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Affiliation(s)
- Qianqian Xu
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Hunan, 410083, China
| | - Xinyu Gao
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Hunan, 410083, China
| | - Senfeng Zhao
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Hunan, 410083, China
| | - You-Nian Liu
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Hunan, 410083, China
| | - Dou Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Hunan, 410083, China
| | - Kechao Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Hunan, 410083, China
| | - Hamideh Khanbareh
- Department of Mechanical Engineering, University of Bath, Bath, BA27AY, UK
| | - Wansong Chen
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Hunan, 410083, China
| | - Yan Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Hunan, 410083, China
| | - Chris Bowen
- Department of Mechanical Engineering, University of Bath, Bath, BA27AY, UK
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67
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Harn YW, Liang S, Liu S, Yan Y, Wang Z, Jiang J, Zhang J, Li Q, He Y, Li Z, Zhu L, Cheng HP, Lin Z. Tailoring electrocatalytic activity of in situ crafted perovskite oxide nanocrystals via size and dopant control. Proc Natl Acad Sci U S A 2021; 118:e2014086118. [PMID: 34161256 PMCID: PMC8237576 DOI: 10.1073/pnas.2014086118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Perovskite oxides (ABO3) have been widely recognized as a class of promising noble-metal-free electrocatalysts due to their unique compositional flexibility and structural stability. Surprisingly, investigation into their size-dependent electrocatalytic properties, in particular barium titanate (BaTiO3), has been comparatively few and limited in scope. Herein, we report the scrutiny of size- and dopant-dependent oxygen reduction reaction (ORR) activities of an array of judiciously designed pristine BaTiO3 and doped BaTiO3 (i.e., La- and Co-doped) nanoparticles (NPs). Specifically, a robust nanoreactor strategy, based on amphiphilic star-like diblock copolymers, is employed to synthesize a set of hydrophobic polymer-ligated uniform BaTiO3 NPs of different sizes (≤20 nm) and controlled compositions. Quite intriguingly, the ORR activities are found to progressively decrease with the increasing size of BaTiO3 NPs. Notably, La- and Co-doped BaTiO3 NPs display markedly improved ORR performance over the pristine counterpart. This can be attributed to the reduced limiting barrier imposed by the formation of -OOH species during ORR due to enhanced adsorption energy of intermediates and the possibly increased conductivity as a result of change in the electronic states as revealed by our density functional theory-based first-principles calculations. Going beyond BaTiO3 NPs, a variety of other ABO3 NPs with tunable sizes and compositions may be readily accessible by exploiting our amphiphilic star-like diblock copolymer nanoreactor strategy. They could in turn provide a unique platform for both fundamental and practical studies on a suite of physical properties (dielectric, piezoelectric, electrostrictive, catalytic, etc.) contingent upon their dimensions and compositions.
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Affiliation(s)
- Yeu-Wei Harn
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
| | - Shuang Liang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
| | - Shuanglong Liu
- Department of Physics, University of Florida, Gainesville, FL 32611
- Quantum Theory Project, University of Florida, Gainesville, FL 32611
| | - Yan Yan
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
| | - Zewei Wang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
| | - Jun Jiang
- Department of Physics, University of Florida, Gainesville, FL 32611
- Quantum Theory Project, University of Florida, Gainesville, FL 32611
| | - Jiawei Zhang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
| | - Qiong Li
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106
| | - Yanjie He
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
| | - Zili Li
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332
| | - Lei Zhu
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106;
| | - Hai-Ping Cheng
- Department of Physics, University of Florida, Gainesville, FL 32611;
- Quantum Theory Project, University of Florida, Gainesville, FL 32611
- Center for Molecular Magnetic Quantum Materials, University of Florida, Gainesville, FL 32611
| | - Zhiqun Lin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332;
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68
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Farahmand N, McGinn CK, Zhang Q, Gai Z, Kymissis I, O'Brien S. Magnetic and dielectric property control in the multivalent nanoscale perovskite Eu 0.5Ba 0.5TiO 3. NANOSCALE 2021; 13:10365-10384. [PMID: 33988208 DOI: 10.1039/d1nr00588j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
We report nanoscale Eu0.5Ba0.5TiO3, a multiferroic in the bulk and candidate in the search to quantify the electric dipole moment of the electron. Eu0.5Ba0.5TiO3, in the form of nanoparticles and other nanostructures is interesting for nanocomposite integration, biomedical imaging and fundamental research, based upon the prospect of polarizability, f-orbital magnetism and tunable optical/radio luminescence. We developed a [non-hydrolytic]sol-[H2O-activated]gel route, derived from in-house metallic Ba(s)/Eu(s) alkoxide precursors and Ti{(OCH(CH3)2}4. Two distinct nanoscale compounds of Ba:Ti:Eu with the parent perovskite crystal structure were produced, with variable dielectric, magnetic and optical properties, based on altering the oxidizing/reducing conditions. Eu0.5Ba0.5TiO3 prepared under air/O2 atmospheres produced a spherical core-shell nanostructure (30-35 nm), with perovskite Eu0.5Ba0.5TiO3 nanocrystal core-insulating oxide shell layer (∼3 nm), presumed a pre-pyrochlore layer abundant with Eu3+. Fluorescence spectroscopy shows a high intensity 5D0→7F2 transition at 622 nm and strong red fluorescence. The core/shell structure demonstrated excellent capacitive properties: assembly into dielectric thin films gave low conductivity (2133 GΩ mm-1) and an extremely stable, low loss permittivity of εeff∼25 over a wide frequency range (tan δ < 0.01, 100 kHz-2 MHz). Eu0.5Ba0.5TiO3 prepared under H2/argon produced more irregular shaped nanocrystals (20-25) nm, with a thin film permittivity around 4 times greater (εeff 101, tan δ < 0.05, 10 kHz-2 MHz, σ∼59.54 kΩ mm-1). Field-cooled magnetization values of 0.025 emu g-1 for EBTO-Air and 0.84 emu g-1 for EBTO-Argon were observed. X-ray photoelectron spectroscopy analysis reveals a complex interplay of EuII/III/TiIII/IV configurations which contribute to the observed ferroic and fluorescence behavior.
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Affiliation(s)
- Nasim Farahmand
- 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.
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69
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Khan MA, Ahmad A, Arshad SN, Nazir A, Ahmad S, Khan MQ, Shahzad A, Satti AN, Qadir MB, Khaliq Z. Development of optimized triaxially electrospun titania
nanofiber‐in‐nanotube core‐shell
structure. J Appl Polym Sci 2021. [DOI: 10.1002/app.50562] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Muhammad Amir Khan
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
| | - Adnan Ahmad
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
| | - Salman Noshear Arshad
- Department of Chemistry and Chemical Engineering University of Management Sciences Lahore Pakistan
| | - Ahsan Nazir
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
| | - Sheraz Ahmad
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
| | - Muhammad Qamar Khan
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
| | - Amir Shahzad
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
- Institute of Textiles and Clothing The Hong Kong Polytechnic University Kowloon Hong Kong
| | - Aamir Naseem Satti
- Advance Energy Materials & Systems (AEMS) Lab USPCAS‐E NUST Islamabad Pakistan
| | - Muhammad Bilal Qadir
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
- Department of Organic & Nano Engineering Hanyang University Seoul South Korea
| | - Zubair Khaliq
- Faculty of Engineering & Technology National Textile University Faisalabad Pakistan
- Department of Organic & Nano Engineering Hanyang University Seoul South Korea
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70
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Neige E, Diwald O. Paramagnetic electron centers in BaTiO 3 nanoparticle powders. Phys Chem Chem Phys 2021; 23:12881-12888. [PMID: 34075975 DOI: 10.1039/d1cp01128f] [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
Knowledge about the emergence and depletion of point defects in BaTiO3 (BTO) nano-structures during materials processing is key to our understanding of their later activity as components in functional dielectric devices or as photocatalysts. In this electron paramagnetic resonance (EPR) study we investigated BaTiO3 nanoparticle powders produced by flame spray pyrolysis (FSP) with powders of TiO2 anatase nanocrystals of comparable size as reference system. Paramagnetic Ti3+ ions located at regular lattice sites and with well-defined EPR signatures were measured in vacuum annealed BaTiO3 nanoparticles, which convert upon further annealing in the temperature range between 873 K and 1173 K from monocrystalline grains with an average size of d = 12 nm, BTO (873 K), to polycrystalline particles with d = 70 nm, BTO (1173 K). Whereas the starting material hosts predominantly polaron-type Ti3+ ions being surrounded by compressed O2- ion octahedra, barium-oxygen divacancy complexes, , become susceptible to electron trapping in polycrystalline and tetragonal BTO (1173 K) particles after pre-annealing at temperatures T > 873 K. The insights obtained provide a base for the detection of local distortion effects, for the identification of charge trapping sites and for the elucidation of their impact on spontaneous polarization in BaTiO3 nanoparticles as photocatalysts or dielectric components.
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Affiliation(s)
- Ellie Neige
- Department of Chemistry and Physics of Materials, Paris Lodron Universität Salzburg, Jakob-Haringer Strasse 2a, A-5020 Salzburg, Austria.
| | - Oliver Diwald
- Department of Chemistry and Physics of Materials, Paris Lodron Universität Salzburg, Jakob-Haringer Strasse 2a, A-5020 Salzburg, Austria.
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71
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Klusáčková M, Nebel R, Krtil P, Krýsová H, Pittkowski RK, Macounová KM. Photo‐electrochemical activity and selectivity of nanocrystalline BaTiO
3
electrodes in water oxidation. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202000005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Monika Klusáčková
- J. Heyrovský Institute of Physical Chemistry Czech Academy of Sciences Prague Czech Republic
| | - Roman Nebel
- J. Heyrovský Institute of Physical Chemistry Czech Academy of Sciences Prague Czech Republic
| | - Petr Krtil
- J. Heyrovský Institute of Physical Chemistry Czech Academy of Sciences Prague Czech Republic
| | - Hana Krýsová
- J. Heyrovský Institute of Physical Chemistry Czech Academy of Sciences Prague Czech Republic
| | - Rebecca K. Pittkowski
- J. Heyrovský Institute of Physical Chemistry Czech Academy of Sciences Prague Czech Republic
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72
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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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73
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Tran MH, Park T, Hur J. Wide-Bandgap CaSnO 3 Perovskite As an Efficient and Selective Deep-UV Absorber for Self-Powered and High-Performance p-i-n Photodetector. ACS APPLIED MATERIALS & INTERFACES 2021; 13:13372-13382. [PMID: 33709683 DOI: 10.1021/acsami.0c23032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Calcium stannate (CaSnO3) is an inorganic perovskite material with an ultrawide bandgap (4.2-4.4 eV) that is associated with its unique structural characteristics. Owing to its remarkable optical and electric properties and high physical and chemical stability, it has recently drawn significant interest for various applications such as photocatalysts for the degradation of organic compounds and hydrogen production under UV radiation, gas sensors, and thermally stable capacitors. In this study, we demonstrate a self-powered deep-UV (DUV) p-i-n photodetector consisting of CaSnO3 thin film as an efficient DUV absorber via a low-temperature solution process. The physical, optical, and electrical properties of the as-synthesized CaSnO3 are characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, ultraviolet-visible spectroscopy, photoluminescence spectroscopy, space charge limited current, and four-point probe measurements. As a key component in a p-i-n DUV photodetector, the thickness of the CaSnO3 absorber layer and operating bias are optimized to enhance charge carrier transport, light absorption, and signal-to-noise ratio. As a result, the optimized device shows a high performance at zero bias under 254 nm UV illumination: with a specific detectivity of 1.56 × 1010 Jones, fast rise/fall time of 80/70 ms, and high 254:365 nm photocurrent rejection ratio of 5.5 along with a stable photoresponse during 100 continuous cycles initially as well as after 1 month of storage. Accordingly, this study suggests that a novel CaSnO3-based photodiode prepared via a solution process can be employed for many practical DUV-detection applications.
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Affiliation(s)
- Manh Hoang Tran
- Department of Chemical and Biological Engineering, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Taehyun Park
- Department of Chemical and Biological Engineering, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
| | - Jaehyun Hur
- Department of Chemical and Biological Engineering, Gachon University, Seongnam, Gyeonggi 13120, Republic of Korea
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Zhu M, Zhang G, Zhai L, Cao J, Li S, Zeng T. Polarization-enhanced photoelectrochemical properties of BaTiO 3/BaTiO 3-x/CdS heterostructure nanocubes. Dalton Trans 2021; 50:3137-3144. [PMID: 33634821 DOI: 10.1039/d1dt00103e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the aim of improving the photocatalytic activity for water splitting, novel core-shell-structured crystalline-BaTiO3/amorphous-BaTiO3-x/crystalline-CdS composite nanocubes are prepared by a facile two-step synthesis approach. Basic characterization techniques such as X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and transmission electron microscopy are carried out on the as-prepared composite nanocubes in order to confirm the quality of their crystal structure, morphology and chemical components correspondingly. UV-Vis-NIR measurements of the as-prepared composite nanocubes validate the presence of extended visible-light absorbance due to oxygen-deficient BaTiO3-x. Photoelectrochemical tests are carried out on the as-prepared nanocomposite films that are coated directly on indium tin oxide (ITO) glass substrates. The as-prepared composite nanocubes show a photocurrent density of 100 μA cm-2 without electric field poling, whereas they show about 200 μA cm-2 with an electric field poling of 18.8 kV cm-1. This study suggests that the photoelectrochemical performance is highest in our prepared BaTiO3/BaTiO3-x/CdS composite film compared to the pure BaTiO3, CdS and BaTiO3/BaTiO3-x films, and it may offer a new potential route for designing cost-effective, highly stable and efficient photocatalysts.
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Affiliation(s)
- Mingjun Zhu
- Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Research Institute of Materials, Shanghai 200437, P. R. China.
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75
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Buonsanti R, Loiudice A, Mantella V. Colloidal Nanocrystals as Precursors and Intermediates in Solid State Reactions for Multinary Oxide Nanomaterials. Acc Chem Res 2021; 54:754-764. [PMID: 33492926 DOI: 10.1021/acs.accounts.0c00698] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
ConspectusPolyelemental compounds with dimensions in the nanosized regime are desirable in a large variety of applications, yet their synthesis remains a general challenge in chemistry. One of the major bottlenecks to obtaining multinary systems is the complexity of the synthesis itself. As the number of elements to include in one single nano-object increases, different chemical interactions arise during nucleation and growth, thus challenging the formation of the targeted product. Choosing the reaction conditions and identifying the parameters which ensure the desired reaction pathway are of the uttermost importance. When, in addition to composition, the simultaneous control of size and shape is sought after, the development of new synthetic strategies guided by the fundamental understanding of the formation mechanisms becomes crucial.In this Account we discuss the use of colloidal chemistry to target multinary oxide nanomaterials, with focus on light absorbers which can drive chemical reactions. We propose the combination of soft and solid-state chemistries as one successful strategy to target this family of polyelemental compounds with control on composition and morphological features. To start with, we highlight studies where in situ forming nanoparticles act as reaction intermediates, which we found in both oxide (i.e., Bi-V-O) and sulfide (Cu-M-S, with M = V, Cr, Mn) nanocrystals (NCs). Examples of ternary sulfides are mentioned only with the purpose of showing that similar mechanisms can apply to different families of multinary nanomaterials. Using this new knowledge, we demonstrate that reacting pre-synthesized NCs with well-defined composition and size with molecular precursors allows significant control of these same property-dictating features (i.e., composition and grain size) in the resulting ternary and quaternary compounds. For example, nanostructured BiV1-xSbxO4 thin films with tunable composition and nanostructured β-Cu2V2O7 with tunable grain size were accessed from colloidally synthesized Bi1-xSbx NCs (0 < x < 1) and size-controlled Cu NCs reacted with a vanadium molecular precursor, respectively. The analysis of reaction aliquots revealed that the formation of these materials occurs via a solid-state reaction between the NC precursors and V-containing amorphous nanoparticles, which form in situ from the molecular precursors. With the aim to achieve better control on the reaction product, we finally propose the use of colloidally synthesized NCs as reactants in solid state reactions. As the first proof of concept, ternary metal oxide NCs, including CuFe2O4, CuMn2O4, and CuGa2O4 with defined size and shape regulated by the NC precursors were obtained. Considering the huge library of single component and binary NCs accessible by colloidal chemistry, the extension of this synthetic concept, which combines soft and solid-state chemistries, to a larger variety of polyelemental nanomaterials is foreseen. Such an approach will contribute to facilitate a more rapid translation of design principles to materials with the desired composition and structural features.
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Affiliation(s)
- Raffaella Buonsanti
- Laboratory of Nanochemistry for Energy (LNCE), Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Anna Loiudice
- Laboratory of Nanochemistry for Energy (LNCE), Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Valeria Mantella
- Laboratory of Nanochemistry for Energy (LNCE), Department of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1950 Sion, Switzerland
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Kim MP, Um DS, Shin YE, Ko H. High-Performance Triboelectric Devices via Dielectric Polarization: A Review. NANOSCALE RESEARCH LETTERS 2021; 16:35. [PMID: 33580327 PMCID: PMC7881083 DOI: 10.1186/s11671-021-03492-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/02/2021] [Indexed: 05/31/2023]
Abstract
Energy harvesting devices based on the triboelectric effect have attracted great attention because of their higher output performance compared to other nanogenerators, which have been utilized in various wearable applications. Based on the working mechanism, the triboelectric performance is mainly proportional to the surface charge density of the triboelectric materials. Various approaches, such as modification of the surface functional group and dielectric composition of the triboelectric materials, have been employed to enhance the surface charge density, leading to improvements in triboelectric performances. Notably, tuning the dielectric properties of triboelectric materials can significantly increase the surface charge density because the surface charge is proportional to the relative permittivity of the triboelectric material. The relative dielectric constant is modified by dielectric polarization, such as electronic, vibrational (or atomic), orientation (or dipolar), ionic, and interfacial polarization. Therefore, such polarization represents a critical factor toward improving the dielectric constant and consequent triboelectric performance. In this review, we summarize the recent insights on the improvement of triboelectric performance via enhanced dielectric polarization.
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Affiliation(s)
- Minsoo P Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea
| | - Doo-Seung Um
- Department of Electrical Engineering, Sejong University, Seoul, Republic of Korea
| | - Young-Eun Shin
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea
| | - Hyunhyub Ko
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South Korea.
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77
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Watanabe Y. Examination of permittivity for depolarization field of ferroelectric by ab initio calculation, suggesting hidden mechanisms. Sci Rep 2021; 11:2155. [PMID: 33495499 PMCID: PMC7835357 DOI: 10.1038/s41598-021-81237-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/01/2021] [Indexed: 11/16/2022] Open
Abstract
Electrostatics of depolarization field Ed in relation to the polarization is studied. In particular, the value of permittivity for Ed (εd) in prototypical situations of ferroelectrics, including Mehta formula, is examined by ab initio calculations. By using spontaneous polarization PS corresponding to accurate experiment ones, we show εd = 1, which suggests that the results of εd ≫ 1 indicate hidden mechanisms; εd = 1 suggests that the effect of Ed is significant to induce intriguing important phenomena overlooked by εd ≫ 1. A bridge between εd = 1 and εd ≫ 1, i.e. the consistency of εd = 1 with conventional results is presented. The exact electrostatic equality of head-to-head-tail-to-tail domains to free-standing ferroelectrics is deduced. Hence, most stoichiometric clean freestanding monodomain ferroelectrics and head-to-head-tail-to-tail domains are shown unstable regardless of size, unless partially metallic. This verifies the previous results in a transparent manner. This conclusion is shown consistent with a recent hyperferroelectric LiBeSb and "freestanding" monolayer ferroelectrics, of which origin is suggested to be adsorbates. In addition, this restriction is suggested to break in externally strained ultrathin ferroelectrics. The macroscopic formulas of Ed are found valid down to a several unit-cells, when electronic and atomic-scale surface effects are unimportant and accurate PS is used.
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78
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Bhim A, Sutter J, Gopalakrishnan J, Natarajan S. Stuffed Tridymite Structures: Synthesis, Structure, Second Harmonic Generation, Optical, and Multiferroic Properties. Chemistry 2021; 27:1995-2008. [DOI: 10.1002/chem.202004078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 11/24/2020] [Indexed: 01/22/2023]
Affiliation(s)
- Anupam Bhim
- Solid State and Structural Chemistry Unit Indian Institute of Science Bangalore 560012 India
| | - Jean‐Pascal Sutter
- Laboratoire de Chime de Coordination CNRS, Université de Toulouse 205 route de Narbonne 31077 Toulouse France
| | | | - Srinivasan Natarajan
- Solid State and Structural Chemistry Unit Indian Institute of Science Bangalore 560012 India
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79
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Multi-scale characterisation of a ferroelectric polymer reveals the emergence of a morphological phase transition driven by temperature. Nat Commun 2021; 12:152. [PMID: 33420070 PMCID: PMC7794429 DOI: 10.1038/s41467-020-20407-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 11/29/2020] [Indexed: 11/08/2022] Open
Abstract
Ferroelectric materials exhibit a phase transition to a paraelectric state driven by temperature - called the Curie transition. In conventional ferroelectrics, the Curie transition is caused by a change in crystal symmetry, while the material itself remains a continuous three-dimensional solid crystal. However, ferroelectric polymers behave differently. Polymeric materials are typically of semi-crystalline nature, meaning that they are an intermixture of crystalline and amorphous regions. Here, we demonstrate that the semi-crystalline morphology of the ferroelectric copolymer of vinylidene fluoride and trifluoroethylene (P(VDF-TrFE)) strongly affects its Curie transition, as not only a change in crystal symmetry but also in morphology occurs. We demonstrate, by high-resolution nanomechanical measurements, that the semi-crystalline microstructure in the paraelectric state is formed by crystalline domains embedded into a softer amorphous phase. Using in situ X-ray diffraction measurements, we show that the local electromechanical response of the crystalline domains is counterbalanced by the amorphous phase, effectively masking its macroscopic effect. Our quantitative multi-scale characterisations unite the nano- and macroscopic material properties of the ferroelectric polymer P(VDF-TrFE) through its semi-crystalline nature. Ferroelectric polymeric materials possess intermixture of crystalline and amorphous regions with complex Curie transition. Here, the authors demonstrate that the semi-crystalline morphology of the ferroelectric copolymer of P(VDF-TrFE) strongly affects its Curie transition.
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80
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Peng F, Xu W, Hu Y, Fu W, Li H, Lin J, Xiao Y, Wu Z, Wang W, Lu C. The design of an inner-motile waste-energy-driven piezoelectric catalytic system. NEW J CHEM 2021. [DOI: 10.1039/d1nj00993a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A kind of waste-energy-driven catalytic system was explored for the first time using magnetically actuated artificial cilia.
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81
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Sun J, Li Q, Zhu H, Liu Z, Lin K, Wang N, Zhang Q, Gu L, Deng J, Chen J, Xing X. Negative-Pressure-Induced Large Polarization in Nanosized PbTiO 3. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2002968. [PMID: 33118254 DOI: 10.1002/adma.202002968] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 09/27/2020] [Indexed: 06/11/2023]
Abstract
Ferroelectric materials usually undergo decay with particle size decreasing into the nanoscale. At the critical value, the crystal structure undergoes a transition from the ferroelectric to paraelectric phase and the ferroelectricity vanishes. It is a big issue to sufficiently maintain strong ferroelectricity at the nanoscale. Herein, it is reported that synthesized 0D freestanding PbTiO3 nanoparticles (NPs) present negative pressure along the c axis (Δc/cbulk × 100% = -2.406), inducing large spontaneous polarization PS (71.2 µC cm-2 in 12 nm). Further local structural studies by atomic pair distribution functions and extended X-ray absorption fine structure indicate the structural evolution of nanosized PbTiO3 . High-angle annular dark-field STEM images reveal the existence of preponderant PbO-terminations on the surface of the PbTiO3 NPs. Ab initio calculation reveals the enhanced hybridization between Pb and O ions, which gives rise to the negative pressure and tensile stress to stabilize the high tetragonality and large polarization. The present work demonstrates an untraditional route to enhance the ferroelectricity and related properties in functional nanostructured materials, being of significance to nanodevices.
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Affiliation(s)
- Jing Sun
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Qiang Li
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - He Zhu
- Department of Physics, City University of Hong Kong, Hong Kong, 999077, China
| | - Zhanning Liu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Kun Lin
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Na Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Qinghua Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lin Gu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jinxia Deng
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jun Chen
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xianran Xing
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, Department of Physical Chemistry, University of Science and Technology Beijing, Beijing, 100083, China
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82
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Ahamed M, Akhtar MJ, Khan MM, Alhadlaq HA, Alshamsan A. Barium Titanate (BaTiO 3) Nanoparticles Exert Cytotoxicity through Oxidative Stress in Human Lung Carcinoma (A549) Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E2309. [PMID: 33266501 PMCID: PMC7700150 DOI: 10.3390/nano10112309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/14/2020] [Accepted: 11/18/2020] [Indexed: 02/07/2023]
Abstract
Barium titanate (BaTiO3) nanoparticles (BT NPs) have shown exceptional characteristics such as high dielectric constant and suitable ferro-, piezo-, and pyro-electric properties. Thus, BT NPs have shown potential to be applied in various fields including electro-optical devices and biomedicine. However, very limited knowledge is available on the interaction of BT NPs with human cells. This work was planned to study the interaction of BT NPs with human lung carcinoma (A549) cells. Results showed that BT NPs decreased cell viability in a dose- and time-dependent manner. Depletion of mitochondrial membrane potential and induction of caspase-3 and -9 enzyme activity were also observed following BT NP exposure. BT NPs further induced oxidative stress indicated by induction of pro-oxidants (reactive oxygen species and hydrogen peroxide) and reduction of antioxidants (glutathione and several antioxidant enzymes). Moreover, BT NP-induced cytotoxicity and oxidative stress were effectively abrogated by N-acetyl-cysteine (an ROS scavenger), suggesting that BT NP-induced cytotoxicity was mediated through oxidative stress. Intriguingly, the underlying mechanism of cytotoxicity of BT NPs was similar to the mode of action of ZnO NPs. At the end, we found that BT NPs did not affect the non-cancerous human lung fibroblasts (IMR-90). Altogether, BT NPs selectively induced cytotoxicity in A549 cells via oxidative stress. This work warrants further research on selective cytotoxicity mechanisms of BT NPs in different types of cancer cells and their normal counterparts.
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Affiliation(s)
- Maqusood Ahamed
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia; (M.J.A.); (M.A.M.K.); (H.A.A.)
| | - Mohd Javed Akhtar
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia; (M.J.A.); (M.A.M.K.); (H.A.A.)
| | - M.A. Majeed Khan
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia; (M.J.A.); (M.A.M.K.); (H.A.A.)
| | - Hisham A. Alhadlaq
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia; (M.J.A.); (M.A.M.K.); (H.A.A.)
- Department of Physics and Astronomy, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Aws Alshamsan
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
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83
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Zhang X, Zhao L, Cui B, Zhang R, Jin Q, Wang J. A new strategy to achieve the controllable preparation of nanoceramics with BaTiO3@resin core–shell nanoparticles. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03595-0] [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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84
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Liu Y, Wang J, Zhang M, Li H, Lin Z. Polymer-Ligated Nanocrystals Enabled by Nonlinear Block Copolymer Nanoreactors: Synthesis, Properties, and Applications. ACS NANO 2020; 14:12491-12521. [PMID: 32975934 DOI: 10.1021/acsnano.0c06936] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The past several decades have witnessed substantial advances in synthesis and self-assembly of inorganic nanocrystals (NCs) due largely to their size- and shape-dependent properties for use in optics, optoelectronics, catalysis, energy conversion and storage, nanotechnology, and biomedical applications. Among various routes to NCs, the nonlinear block copolymer (BCP) nanoreactor technique has recently emerged as a general yet robust strategy for crafting a rich diversity of NCs of interest with precisely controlled dimensions, compositions, architectures, and surface chemistry. It is notable that nonlinear BCPs are unimolecular micelles, where each block copolymer arm of nonlinear BCP is covalently connected to a central core or polymer backbone. As such, their structures are static and stable, representing a class of functional polymers with complex architecture for directing the synthesis of NCs. In this review, recent progress in synthesizing NCs by capitalizing on two sets of nonlinear BCPs as nanoreactors are discussed. They are star-shaped BCPs for producing 0D spherical nanoparticles, including plain, hollow, and core-shell nanoparticles, and bottlebrush-like BCPs for creating 1D plain and core/shell nanorods (and nanowires) as well as nanotubes. As the surface of these NCs is intimately tethered with the outer blocks of nonlinear BCPs used, they can thus be regarded as polymer-ligated NCs (i.e., hairy NCs). First, the rational design and synthesis of nonlinear BCPs via controlled/living radical polymerizations is introduced. Subsequently, their use as the NC-directing nanoreactors to yield monodisperse nanoparticles and nanorods with judiciously engineered dimensions, compositions, and surface chemistry is examined. Afterward, the intriguing properties of such polymer-ligated NCs, which are found to depend sensitively on their sizes, architectures, and functionalities of surface polymer hairs, are highlighted. Some practical applications of these polymer-ligated NCs for energy conversion and storage and drug delivery are then discussed. Finally, challenges and opportunities in this rapidly evolving field are presented.
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Affiliation(s)
- Yijiang Liu
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Jialin Wang
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Mingyue Zhang
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Huaming Li
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Zhiqun Lin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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85
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Abstract
Molecular ferroelectrics combine electromechanical coupling and electric polarizabilities, offering immense promise in stimuli-dependent metamaterials. Despite such promise, current physical realizations of mechanical metamaterials remain hindered by the lack of rapid-prototyping ferroelectric metamaterial structures. Here, we present a continuous rapid printing strategy for the volumetric deposition of water-soluble molecular ferroelectric metamaterials with precise spatial control in virtually any three-dimensional (3D) geometry by means of an electric-field-assisted additive manufacturing. We demonstrate a scaffold-supported ferroelectric crystalline lattice that enables self-healing and a reprogrammable stiffness for dynamic tuning of mechanical metamaterials with a long lifetime and sustainability. A molecular ferroelectric architecture with resonant inclusions then exhibits adaptive mitigation of incident vibroacoustic dynamic loads via an electrically tunable subwavelength-frequency band gap. The findings shown here pave the way for the versatile additive manufacturing of molecular ferroelectric metamaterials.
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86
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Schumacher C, Hernández JG, Bolm C. Electro-Mechanochemical Atom Transfer Radical Cyclizations using Piezoelectric BaTiO 3. Angew Chem Int Ed Engl 2020; 59:16357-16360. [PMID: 32515540 PMCID: PMC7540587 DOI: 10.1002/anie.202003565] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 04/18/2020] [Indexed: 12/21/2022]
Abstract
The formation and regeneration of active CuI species is a fundamental mechanistic step in copper-catalyzed atom transfer radical cyclizations (ATRC). Typically, the presence of the catalytically active CuI species in the reaction mixture is secured by using high CuI catalyst loadings or the addition of complementary reducing agents. In this study it is demonstrated how the piezoelectric properties of barium titanate (BaTiO3 ) can be harnessed by mechanical ball milling to induce electrical polarization in the strained piezomaterial. This strategy enables the conversion of mechanical energy into electrical energy, leading to the reduction of a CuII precatalyst into the active CuI species in copper-catalyzed mechanochemical solvent-free ATRC reactions.
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Affiliation(s)
- Christian Schumacher
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - José G. Hernández
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Carsten Bolm
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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87
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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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88
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Schumacher C, Hernández JG, Bolm C. Electro‐Mechanochemical Atom Transfer Radical Cyclizations using Piezoelectric BaTiO
3. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Christian Schumacher
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - José G. Hernández
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Carsten Bolm
- Institute of Organic ChemistryRWTH Aachen University Landoltweg 1 52074 Aachen Germany
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89
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Zhou X, Yan F, Wu S, Shen B, Zeng H, Zhai J. Remarkable Piezophoto Coupling Catalysis Behavior of BiOX/BaTiO 3 (X = Cl, Br, Cl 0.166 Br 0.834 ) Piezoelectric Composites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001573. [PMID: 32431007 DOI: 10.1002/smll.202001573] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 06/11/2023]
Abstract
Polarization field engineering of piezoelectric materials is considered as an advisable strategy in fine-tuning photocatalytic performance which has drawn much attention recently. However, the efficient charge separation that determines the photocatalytic reactivities of these materials is quite restricted. Herein, a judicious combination of piezoelectric and photocatalytic performances of BiOX/BaTiO3 (X = Cl, Br, Cl0.166 Br0.834 ) to enable a high piezophotocatalytic activity is demonstrated. Under the synergic advantages of chemical potential difference and piezoelectric potential difference in BiOX/BaTiO3 composites, the photoinduced carriers recombination is largely halted, which directly contributes to the significantly promoted piezophotocatalytic activity of piezoelectric composites. Inspiringly, the BiOBr/BaTiO3 composites under light irradiation with auxiliary ultrasonic activation result in an ultrahigh and stable photocatalytic performance, which is much higher than the total of those by isolated photocatalysis and piezocatalysis, and can rival current excellent photocatalytic system. In fact, the theoretical piezoelectric potential difference of BiOBr/BaTiO3 composites reaches 100 mV, which far exceeds the pure BaTiO3 of 31.21 mV and BiOBr of 30 mV, respectively. First, fabrication of BiOX/BaTiO3 piezoelectric composites and its remarkable piezophoto coupling catalysis behavior lays new ground for developing high-efficiency piezoelectric photocatalysts in purifying wastewater, killing bacteria, and other piezophototronic processes.
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Affiliation(s)
- Xiaofeng Zhou
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Fei Yan
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Shuanghao Wu
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Bo Shen
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
| | - Huarong Zeng
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Jiwei Zhai
- Shanghai Key Laboratory for R&D and Application of Metallic Functional Materials, Functional Materials Research Laboratory, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China
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90
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Yang X, Pu Y, Zhang Y, Liu X, Li J, Yuan D, Ning X. Multifunctional composite membrane based on BaTiO 3@PU/PSA nanofibers for high-efficiency PM2.5 removal. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122254. [PMID: 32062542 DOI: 10.1016/j.jhazmat.2020.122254] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 01/15/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
In this study, a new barium titanate@polyurethane/polysulfonamide (BaTiO3@PU/PSA) composite nanofibrous membrane with comprehensive properties for high temperature filtration and robust PM2.5 removal was successfully fabricated through the blending spinning of PU and PSA and the introduction of BaTiO3. As a consequence, the BaTiO3@PU/PSA membrane achieved the high capture efficiency of 99.99 % for fine particulates, low pressure drop of 39.4 ± 0.2 Pa, good mechanical property (13.27 MPa), sufficient flexibility, high thermal stability (up to 300 °C), favorable flame-retardancy as well as superior chemical resistance against acid and alkali. Especially, to intuitively reveal the relationship between the fiber structure, high temperature environment, gas velocity and filtration performance of the composite membrane, the filtration processes were carefully investigated through the analog simulation. More importantly, the BaTiO3@PU/PSA membrane exhibited high-efficiency PM2.5 purification capacity, and the removal efficiency kept stable after high temperature, acid or alkali treatment, ascribing to the advantageous structure of PSA, PU and BaTiO3. Overall, the BaTiO3@PU/PSA nanofiber membranes with versatility are a promising high-efficiency candidate for dust removal, particularly in harsh conditions.
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Affiliation(s)
- Xue Yang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China
| | - Yi Pu
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China
| | - Yifei Zhang
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China
| | - Xiaofang Liu
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China
| | - Jianxin Li
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China
| | - Ding Yuan
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China.
| | - Xin Ning
- Industrial Research Institute of Nonwovens & Technical Textiles, College of Textiles & Clothing, Qingdao University, Qingdao 266071, Shandong, PR China
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91
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Tan DQ. The search for enhanced dielectric strength of polymer‐based dielectrics: A focused review on polymer nanocomposites. J Appl Polym Sci 2020. [DOI: 10.1002/app.49379] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Daniel Q. Tan
- Technion Israel Institute of Technology and Guangdong Technion Israel Institute of Technology Shantou China
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92
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Walton RI. Perovskite Oxides Prepared by Hydrothermal and Solvothermal Synthesis: A Review of Crystallisation, Chemistry, and Compositions. Chemistry 2020; 26:9041-9069. [PMID: 32267980 DOI: 10.1002/chem.202000707] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Indexed: 11/07/2022]
Abstract
Perovskite oxides with general composition ABO3 are a large group of inorganic materials that can contain a variety of cations from all parts of the Periodic Table and that have diverse properties of application in fields ranging from electronics, energy storage to photocatalysis. Solvothermal synthesis routes to these materials have become increasingly investigated in the past decade as a means of direct crystallisation of the solids from solution. These methods have significant advantages leading to adjustment of crystal form from the nanoscale to the micron-scale, the isolation of compositions not possible using conventional solid-state synthesis and in addition may lead to scalable processes for producing materials at moderate temperatures. These aspects are reviewed, with examples taken from the past decade's literature on the solvothermal synthesis of perovskites with a systematic survey of B-site cations, from transition metals in Groups 4-8 and main group elements in Groups 13, 14 and 15, to solid solutions and heterostructures. As well as hydrothermal reactions, the use of various solvents and solution additives are discussed and some trends identified, along with prospects for developing control and predictability in the crystallisation of complex oxide materials.
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Affiliation(s)
- Richard I Walton
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, UK
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93
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Akman F, Kaçal M, Almousa N, Sayyed M, Polat H. Gamma-ray attenuation parameters for polymer composites reinforced with BaTiO3 and CaWO4 compounds. PROGRESS IN NUCLEAR ENERGY 2020. [DOI: 10.1016/j.pnucene.2020.103257] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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94
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Hu F, An L, Chivate AT, Guo Z, Khuje SV, Huang Y, Hu Y, Armstrong J, Zhou C, Ren S. Flexible and printable dielectric polymer composite with tunable permittivity and thermal stability. Chem Commun (Camb) 2020; 56:2332-2335. [PMID: 31990279 DOI: 10.1039/c9cc08648j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lightweight and printable polymer dielectrics are ubiquitous in flexible hybrid electronics, exhibiting high breakdown strength and mechanical reliability. However, their advanced electronic applications are limited due to their relatively low permittivity, compared to their ceramic counterparts. Here, we report flexible all organic percolative nanocomposites that contain in situ grown conductive polymer networks and dielectric polymer matrix, in which their dielectric properties can be designed and guided from the percolation theory. High dielectric constant of all organic percolative nanocomposites is shown over a broad frequency range under intensive bending cycles, while their thermal stability is attributed to thermally conductive 2D montmorillonite nanosheets. The printable polymer composites with high dielectric performance and thermal stability will find broader interest in flexible hybrid electronics and radio frequency devices.
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Affiliation(s)
- Feng Hu
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Lu An
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Aditya Tushar Chivate
- Department of Industrial and Systems Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Zipeng Guo
- Department of Industrial and Systems Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Saurabh Vishwas Khuje
- Department of Industrial and Systems Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Yulong Huang
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Yong Hu
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Jason Armstrong
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Chi Zhou
- Department of Industrial and Systems Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
| | - Shenqiang Ren
- Department of Mechanical and Aerospace Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and Research and Education in Energy, Environment & Water Institute, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA and Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA
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95
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Yoon YN, Lee DS, Park HJ, Kim JS. Barium Titanate Nanoparticles Sensitise Treatment-Resistant Breast Cancer Cells to the Antitumor Action of Tumour-Treating Fields. Sci Rep 2020; 10:2560. [PMID: 32054945 PMCID: PMC7018996 DOI: 10.1038/s41598-020-59445-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 01/27/2020] [Indexed: 11/17/2022] Open
Abstract
Although tumour-treating fields (TTFields) is a promising physical treatment modality based on disruption of dipole alignments and generation of dielectrophoretic forces during cytokinesis, not much is known about TTFields-responsive sensitisers. Here, we report a novel TTFields-responsive sensitiser, barium titanate nanoparticles (BTNPs), which exhibit cytocompatibility, with non-cytotoxic effects on breast cancer cells. BTNPs are characterised by high dielectric constant values and ferroelectric properties. Notably, we found that BTNPs sensitised TTFields-resistant breast cancer cells in response to TTFields. In addition, BTNPs accumulated in the cytoplasm of cancer cells in response to TTFields. Further, we showed that TTFields combined with BTNPs exhibited antitumor activity by modulating several cancer-related pathways in general, and the cell cycle-related apoptosis pathway in particular. Therefore, our data suggest that BTNPs increase the antitumor action of TTFields by an electric field-responsive cytosolic accumulation, establishing BTNP as a TTFields-responsive sensitiser.
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Affiliation(s)
- Yi Na Yoon
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, 01812, South Korea.,Radiological and Medico-Oncological Sciences, University of Science and Technology, Daejeon, 34113, South Korea
| | - Dae-Sik Lee
- Electronics and Telecommunications Research Institute, Daejeon, 34129, South Korea
| | - Hyung Ju Park
- Electronics and Telecommunications Research Institute, Daejeon, 34129, South Korea.
| | - Jae-Sung Kim
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, 01812, South Korea. .,Radiological and Medico-Oncological Sciences, University of Science and Technology, Daejeon, 34113, South Korea.
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96
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Tao J, Cao SA, Feng R, Deng Y. High dielectric thin films based on barium titanate and cellulose nanofibrils. RSC Adv 2020; 10:5758-5765. [PMID: 35497466 PMCID: PMC9049558 DOI: 10.1039/c9ra10916a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 01/31/2020] [Indexed: 01/21/2023] Open
Abstract
A series of composite films based on tetragonal barium titanate (BTO) and cellulose nanofibrils (CNF) with high dielectric constant are prepared using a casting method in aqueous solution. No organic solvent is involved during the preparation, which demonstrates the environmental friendliness of the novel material. With less than 30 wt% of filler loading, the excellent distribution of BTO nanoparticles within the CNF matrix is revealed by the FE-SEM images. The dielectric constant of the CNF/BTO (30 wt%) composite film reaches up to 188.03, which is about seven times higher than that of pure CNF (25.24), while the loss tangent only rises slightly from 0.70 to 1.21 (at 1 kHz). The thin films kept their dielectric properties on an acceptable level after repeatedly twisting or rolling 10 times. The improvement of thermal stability is observed with the presence of BTO. The outstanding dielectric properties of the CNF/BTO composite film indicates its great potential to be utilized in energy storage applications.
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Affiliation(s)
- Jie Tao
- School of Power and Mechanical Engineering, Wuhan University Wuhan 430072 China
| | - Shun-An Cao
- School of Power and Mechanical Engineering, Wuhan University Wuhan 430072 China
| | - Rui Feng
- School of Material Science and Engineering, Wuhan University of Technology Wuhan 430070 China
| | - Yulin Deng
- School of Chemical & Biomolecular Engineering, Renewable Bioproducts Institute, Georgia Institute of Technology Atlanta GA 30332-0620 USA
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97
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Draghici AD, Busuioc C, Mocanu A, Nicoara AI, Iordache F, Jinga SI. Composite scaffolds based on calcium phosphates and barium titanate obtained through bacterial cellulose templated synthesis. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110704. [PMID: 32204018 DOI: 10.1016/j.msec.2020.110704] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 01/25/2020] [Accepted: 01/27/2020] [Indexed: 11/16/2022]
Abstract
Taking into account the potential of barium titanate to deliver electrical stimulation to the physiological microenvironment and offer beneficial conditions for the cellular metabolism, this mineral phase was selected for the development of new composites. In this context, calcium phosphates and barium titanate were deposited on bacterial cellulose membranes under ultrasonic irradiation, the resulting system being subjected to a thermal treatment in optimized conditions in order to remove the polymeric template and achieve 3D porous architectures. The complex characterization performed on the intermediate and final samples demonstrated the suitability of such materials for hard tissue engineering applications.
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Affiliation(s)
| | - Cristina Busuioc
- University Politehnica of Bucharest, RO-060042 Bucharest, Romania.
| | - Alexandra Mocanu
- University Politehnica of Bucharest, RO-060042 Bucharest, Romania
| | | | - Florin Iordache
- University of Agronomic Sciences and Veterinary Medicine of Bucharest, RO-011464 Bucharest, Romania
| | - Sorin-Ion Jinga
- University Politehnica of Bucharest, RO-060042 Bucharest, Romania
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98
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Yang H, Zhou M, Tang H, Sun M, Liu P, Liu Y, Chen L, Li D, Wu D, Hao J, Xu B, Zhao Z, Ren Z, Jia S, Wang K, Sun XW. Enhanced light emission of quantum dot films by scattering of poly(zinc methacrylate) coating CdZnSeS/ZnS quantum dots and high refractive index BaTiO3 nanoparticles. RSC Adv 2020; 10:31705-31710. [PMID: 35518187 PMCID: PMC9056395 DOI: 10.1039/d0ra05389a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/11/2020] [Indexed: 01/26/2023] Open
Abstract
Quantum dots (QDs) have received considerable attention in information displays owing to their high quantum yield, high colour purity and low-cost fabrication. However, light emission for ultra-thin QD films with low mass percentage of QDs still need to be improved because the blue light can directly transmit the films, leading to insufficient energy to excite the QDs. In this study, we report QD films based on a poly(zinc methacrylate) coating with alloyed green-emitting CdZnSeS/ZnS quantum dots (QDs@PZnMA) together with high refractive-index BaTiO3 nanoparticles to enhance the scattering coefficient of the QD films. Results demonstrate a 7.5-fold increase in the absorption coefficient, 11.3-fold increase in the scattering coefficient, 8.5-fold increase in the optical density (OD) and 8.6-fold increase in the green-light emission of QD films, compared with films that have the same mass percentage of pristine QDs. This approach provides a promising strategy for developing QD optical films with high scattering and enhanced light emission for flexible displays. We report QD films based on a poly(zinc methacrylate) coating with alloyed green-emitting CdZnSeS/ZnS quantum dots (QDs@PZnMA) together with high refractive-index BaTiO3 nanoparticles to enhance the scattering coefficient of the QD films.![]()
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99
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Wang W, Li J, Liu H, Ge S. Advancing Versatile Ferroelectric Materials Toward Biomedical Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 8:2003074. [PMID: 33437585 PMCID: PMC7788502 DOI: 10.1002/advs.202003074] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/09/2020] [Indexed: 05/08/2023]
Abstract
Ferroelectric materials (FEMs), possessing piezoelectric, pyroelectric, inverse piezoelectric, nonlinear optic, ferroelectric-photovoltaic, and many other properties, are attracting increasing attention in the field of biomedicine in recent years. Because of their versatile ability of interacting with force, heat, electricity, and light to generate electrical, mechanical, and optical signals, FEMs are demonstrating their unique advantages for biosensing, acoustics tweezer, bioimaging, therapeutics, tissue engineering, as well as stimulating biological functions. This review summarizes the current-available FEMs and their state-of-the-art fabrication techniques, as well as provides an overview of FEMs-based applications in the field of biomedicine. Challenges and prospects for future development of FEMs for biomedical applications are also outlined.
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Affiliation(s)
- Wenjun Wang
- Department of Biomaterials, School and Hospital of Stomatology, Cheeloo College of MedicineShandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue RegenerationJinan250012China
| | - Jianhua Li
- Department of Biomaterials, School and Hospital of Stomatology, Cheeloo College of MedicineShandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue RegenerationJinan250012China
| | - Hong Liu
- State Key Laboratory of Crystal MaterialsShandong UniversityJinan250013China
| | - Shaohua Ge
- Department of Biomaterials, School and Hospital of Stomatology, Cheeloo College of MedicineShandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue RegenerationJinan250012China
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100
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Luo H, Zhou X, Ellingford C, Zhang Y, Chen S, Zhou K, Zhang D, Bowen CR, Wan C. Interface design for high energy density polymer nanocomposites. Chem Soc Rev 2019; 48:4424-4465. [PMID: 31270524 DOI: 10.1039/c9cs00043g] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
This review provides a detailed overview on the latest developments in the design and control of the interface in polymer based composite dielectrics for energy storage applications. The methods employed for interface design in composite systems are described for a variety of filler types and morphologies, along with novel approaches employed to build hierarchical interfaces for multi-scale control of properties. Efforts to achieve a close control of interfacial properties and geometry are then described, which includes the creation of either flexible or rigid polymer interfaces, the use of liquid crystals and developing ceramic and carbon-based interfaces with tailored electrical properties. The impact of the variety of interface structures on composite polarization and energy storage capability are described, along with an overview of existing models to understand the polarization mechanisms and quantitatively assess the potential benefits of different structures for energy storage. The applications and properties of such interface-controlled materials are then explored, along with an overview of existing challenges and practical limitations. Finally, a summary and future perspectives are provided to highlight future directions of research in this growing and important area.
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Affiliation(s)
- Hang Luo
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China.
| | - Xuefan Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China.
| | - Christopher Ellingford
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, CV4 7AL, UK.
| | - Yan Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China. and Department of Mechanical Engineering, University of Bath, Bath, BA2 2ET, UK.
| | - Sheng Chen
- Key Laboratory of Polymeric Materials and Application Technology of Hunan Province, College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Kechao Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China.
| | - Dou Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan 410083, China.
| | - Chris R Bowen
- Department of Mechanical Engineering, University of Bath, Bath, BA2 2ET, UK.
| | - Chaoying Wan
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, CV4 7AL, UK.
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