Crystals
·
2019
·Vol. 9
·期 4
·206
·
IF 2.061
Nannan Dong,Xiaoyi Gao,Fangquan Xia,Hanxing Liu,Hua Hao,Shujun Zhang
This work provides a comparative study of the dielectric and piezoelectric properties of randomly oriented and textured 0.88Na0.5Bi0.5TiO3-0.08K0.5Bi0.5TiO3-0.04BaTiO3(88NBT) ceramics. Textured ceramics were fabricated by template grain growth (TGG) method using NaNbO3(NN) for templates. For textured ceramics with 4 wt% NN templates, a Lotgering factor of 96% and piezoelectric coefficientd33of 185 pC/N were obtained. Compared to the randomly oriented ceramics, textured ceramics show lower strain hysteresis (H= 7.6%), higher unipolar strain of 0.041% with corresponding large signal piezoelectric coefficientd33*of 200 pm/V at applied field of 2 kV/mm. This enhancement can be explained by the grain orientation along <001> direction by texturing, where an engineered domain configuration is formed after polarization, leading to decreased hysteresis and increased piezoelectric property.Keywords:textured ceramics;template grain growth;piezoelectric materials;electrical conductivity
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
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2021
·
IF 5.706
Shuzhen Zhou,Jingyi Hao,Mengjie Zhou,Xiaoguang Qiao,Xinchang Pang
The combination of piezoelectric material and ball milling leads to new frontiers in catalysis research. Here we used piezoelectric BaTiO 3 nanoparticles as the additive for the degradation of dye pollutant in solid state in ball milling process. With the assistant of ppm level CuBr 2 and H 2 O 2 , high degradation conversion (> 99%) of dyes can be achieved in short time (10 min). BaTiO 3 nanoparticles became temporarily highly polarized particles during BM process and generated electron-hole. These particles exhibited strong reducing properties and reduced Cu(II) into the active Cu(I) species which can catalyze H 2 O 2 to generate highly active ·O 2– to enhance the dye degradation. In addition to the general applicability for different dyes and larger scales, this BaTiO 3 assist BM process was deduced to be a promising powerful platform for organic pollutant treatment in solid states.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 34
·2401897
·
IF 18.5
Guangyao Hu,Jiarui Wang,Lulu Chen,Haoqin Zheng,Yuanpei Lan,Kaiyang Wang,Xijian Liu,Hongpeng You,Yu Luo,Lile Dong
The inherent and unique charge-carrier release characteristics of piezoelectric sonosensitizers with desired bandgap can be leveraged to initiate reactive oxygen species (ROS) reactions that have considerable potential for sonodynamic therapy (SDT). In this study, a bimetallic Bi 4 NbO 8 Br-polyvinylpyrrolidone (BNOBP) with a small bandgap (2.45 eV) is synthesized as a potential piezoelectric sonosensitizer. The robust interactions within and between the Bi─O and Nb─O layers narrow the bandgap, facilitating carrier transfer. Concurrently, compared with that of TiO 2 and BiOBr, BNOBP exhibits a rapid acoustoelectric response and desirable electron–hole separation efficiency, enabling the generation of ·O 2 − under ultrasound (US) irradiation. Notably, BNOBP alleviates the overexpression of glutathione (GSH) in tumors and prevents the consumption of the generated ROS by GSH. Combining the previous small bandgap endow the high ROS generation efficiency, this study provides a paradigm for in situ regulation of oxidative stress levels in tumor tissue microenvironment based on bimetallic piezoelectric sonosensitizers.
研究领域:
生物医学工程
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肿瘤学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
MINERALS ENGINEERING
·
2025
·
IF 5
Qian Liu,Meitang Liu,Haisheng Hu,Xiaoyu Song,Lu Xiong,Xinyu Li
Lithium is a crucial strategic resource that plays a pivotal and instrumental role in facilitating the advancement of new energy technologies. The rapid growth of the renewable energy industry has resulted in a critical shortage of lithium salt supplies. The extraction of lithium from saline lake brine is characterized by its low energy consumption and cost-effectiveness, making it a prominent area of research in the field. However, the development and widespread application of lithium extraction technology under natural settings have tremendous relevance for lithium extraction in this region because of the severe natural environment and limited industrial base in the majority of saline lake areas. In this paper, zinc oxide with piezoelectric properties was prepared using hydrothermal method, and it was combined with lithium iron phosphate through sintering method to create a piezoelectric adsorbent capable of responding to mechanical energy. The adsorbent can capture wave energy in the saline lake and generate polarized electrons to accelerate theredox process, resulting in selective lithium ion adsorption. After 48 h of reaction with a 20 % zinc oxide loading and a sintering temperature of 200℃, the capacity of the piezoelectric adsorbents for lithium increased to 35.27 mg/g, as shown by experimental results. This study proposes a novel method for extracting lithium directly from saline lake brines under natural conditions, as well as a new application of piezoelectric materials.
研究领域:
材料科学
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能源技术
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Advances
·
2023
·Vol. 4
·期 23
·6092-6117
·
IF 5
Shadi Asgari,Ghodsi Mohammadi Ziarani,Alireza Badiei,Siavash Iravani
The emergence of piezocatalysts has led to advancements in catalyst design through the development of new technologies. Electron/hole piezocatalysis, a novel form of catalysis, utilizes piezoelectric materials that are stimulated by mechanical energy. This stimulation generates electrons and holes, which prove highly effective in promoting inefficient reactions, designing new reactions, and facilitating challenging chemical reactions and transformations. This review provides a concise historical account of electron/hole catalysis and the concept of piezoelectricity. Additionally, it explores various types of piezocatalysts, including piezoceramics (both lead-free and lead-based), piezopolymers, and piezocomposites. Notably, lead-free piezoceramics such as barium titanate and zinc oxide, as well as piezopolymers like polyvinylidene fluoride in β-phase and polyacrylonitrile in planar zigzag conformation, have gained significant recognition. The piezoelectric coefficient of polymers can be enhanced by adjusting the processing parameters and employing techniques such as blending, filler addition, stretching, and composite formation with piezo/non-piezo additives. Furthermore, piezoelectricity has been observed in unique materials such as ionic liquids, metal–organic frameworks, graphitic carbon nitride, black phosphorus, and MXenes. This review also presents recent research findings on the utilization of piezoelectric materials in various applications, including water splitting, water remediation, organic synthesis, and polymerization/crosslinking.
研究领域:
材料科学
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催化化学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE COMMUNICATIONS
·
2015
·
IF 1.897
X.G. Fang,S.X. Lin,A.H. Zhang,X.B. Lu,X.S. Gao,M. Zeng,J.-M. Liu
Polarization switching and energy storage properties of a series of Pb 0.97 La 0.02 Zr 0.95 Ti 0.05 O 3 (PLZT) thin films deposited on (100)-textured LaNiO 3 (LNO)-buffered Si substrates and (111)-textured Pt/Ti/SiO 2 /Si substrates were investigated. It was revealed that the PLZT films deposited on the (100)-textured LNO-buffered Si substrates prefer the (100) textured structure, while the orientation of the films deposited on the (111)-textured Pt-coated Si substrates is random. With respect to the films on the Pt-coated Si substrates, the (100) textured PLZT films have bigger compressive residual stress, larger electrical polarization, better dielectric properties , and better energy storage performances. For the (100)-orientated PLZT films, the energy density ( W s ) and efficiency ( η ) measured at room temperature are about 15.3 J/cm 3 and 56% respectively. Moreover, the better frequency stability in the range from 20 Hz to 10 kHz, and temperature stability in the range from 25 to 270 °C are demonstrated in the (100)-orientated PLZT films. These results indicate that the PLZT films with LNO bottom electrode could be potential candidate for applications in high energy storage density capacitors.
研究领域:
材料科学
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物理学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2021
·
IF 19.503
Meng Li,Jingxue Sun,Gang Chen,Shunyu Yao,Bowen Cong
When internally polarized by mechanical energy, piezoelectric materials can establish polarization electric field and provide driving force for separating photogenerated carriers. Herein, S vacancies are introduced as an intermediate to make metal ions form coordination bond with F - on PVDF (polyvinylidene fluoride) surface, and the built-in electric field is intimately related to polarized electric field. We successfully synthesized ZnS/Bi 2 S 3 -PVDF film photocatalyst containing S vacancies (ZnS-V S /Bi 2 S 3 -PVDF). Polarized electric field on PVDF caused by ultrasonic cavitation and built-in electric field formed between ZnS-V S /Bi 2 S 3 heterojunction structure are beneficial to interfacial charge transferring. Theoretical calculation simulation demonstrate that the synergistic effect of the double electric fields is propitious to inhibit the recombination of carriers. The hydrogen evolution rate of ZnS-V S /Bi 2 S 3 -PVDF reaches 10.07 mmol h −1 g −1 . Moreover, it has excellent reversibility and facile recovery capacity. This work provides new platform for photocatalytic reduction of hydrogen evolution and is expected to contribute to clean energy production.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
·
IF 10.383
Lijie Mao,Long Bai,Xinqing Wang,Xiaolei Chen,Dong Zhang,Fangping Chen,Changsheng Liu
Bone regeneration is a well-orchestrated process involving electrical, biochemical, and mechanical multiple physiological cues. Electrical signals play a vital role in the process of bone repair. The endogenous potential will spontaneously form on defect sites, guide the cell behaviors, and mediate bone healing when the bone fracture occurs. However, the mechanism on how the surface charges of implant potentially guides osteogenesis and osteoimmunology has not been clearly revealed yet. In this study, piezoelectric BaTiO3/β-TCP (BTCP) ceramics are prepared by two-step sintering, and different surface charges are established by polarization. In addition, the cell osteogenesis and osteoimmunology of BMSCs and RAW264.7 on different surface charges were explored. The results showed that the piezoelectric constant d33 of BTCP was controllable by adjusting the sintering temperature and rate. The polarized BTCP with a negative surface charge (BTCP−) promoted protein adsorption and BMSC extracellular Ca2+ influx. The attachment, spreading, migration, and osteogenic differentiation of BMSCs were enhanced on BTCP–. Additionally, the polarized BTCP ceramics with a positive surface charge (BTCP+) significantly inhibited M1 polarization of macrophages, affecting the expression of the M1 marker in macrophages and changing secretion of proinflammatory cytokines. It in turn enhanced osteogenic differentiation of BMSCs, suggesting that positive surface charges could modulate the bone immunoregulatory properties and shift the immune microenvironment to one that favored osteogenesis. The result provides an alternative method of synergistically modulating cellular immunity and the osteogenesis function and enhancing the bone regeneration by fabricating piezoelectric biomaterials with electrical signals.
研究领域:
生物医学工程
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组织工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small Methods
·
2023
·Vol. 7
·期 9
·2300701
·
IF 12.4
Zhuzhu Shao,Xuan Zhang,Jingfeng Liu,Xingang Liu,Chuhong Zhang
Flexible piezoelectric energy harvesters (PEHs) have gained substantial attention owing to their wearability, breathability, and sustainable self-powered supply. However, existing film PEHs cannot identify forces in different bending directions, limiting their applications in wearable electronics and artificial intelligence. This study constructs a fabric PEH for the first time by introducing piezoelectric anisotropic BaTi 2 O 5 nanorods (BT2-nr) into piezoelectric polyvinylidene fluoride (PVDF) nanofibers with a bi-oriented architecture, in which BT2-nr uniformly aligns in the PVDF nanofiber during electrospinning. The dual-orientation feature endows the flexible PEH with anisotropy, which can sensitively identify the forces at different bending directions (e.g., bent vertically, parallelly, or twisted by 45° along the fiber orientations). Simultaneously, the composite PVDF/BT2 PEH containing 15 wt.% BT2-nr delivers an optimal piezoelectric output of 31.2 V with a high sensitivity of 5.22 V N −1 . The developed anisotropic PEH can be used as a self-powered pressure sensor for multimodal intelligent biomonitoring of human movement. This study provides a feasible strategy for fabricating self-powered flexible PEHs with high electromechanical conversion efficiency and multifunctionality for wearable piezoelectric pressure sensors.
研究领域:
材料科学
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纳米技术
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智能设备
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xiaotong Zhao,Jingyi Li,Jing Dai,Zhan Qu,Xiaoyun Li,Yong Wu,Shijun Hu,Jian Fang,Zhenya Shen,Miao Xiao,Mingliang Tang
Bioelectricity plays a pivotal role in human physiology and pathology, particularly within the cardiovascular system. Myocardial ischemia disrupts the normal transmission of electrical signals through the heart, leading to cardiomyocyte death, ventricular remodeling, and ultimately heart failure. Electrical stimulation (ES) has been proven to be an effective strategy for treating cardiac diseases. However, invasive electrode implantation and the unique anatomical position of the heart limit the clinical application of ES therapy. Developing wireless ES systems that effectively enhance bioelectric propagation and electrical activity in the heart can significantly advance therapeutic interventions. In this study, a lead-free, biodegradable and the Food and Drug Administration approved poly-L-lactic acid piezoelectric nanofiber is designed for wireless ES to the myocardium under ultrasonic stimulation, thus promoting structural and functional recovery of cardiac tissue in murine myocardial infarction model. Further study shows that the ultrasound-driven wireless ES system significantly enhanced mitochondria function and angiogenesis in vivo and in vitro experiments. Additionally, the ES system can regulate intracellular calcium ion concentration and cardia tissue contraction rhythm of isolated neonatal rat. Collectively, the findings offer a novel approach for the treatment of heart diseases and potential cardiac pacing applications under the ultrasound-driven wireless ES system.
研究领域:
生物医学工程
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心血管疾病治疗
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE & ENGINEERING R-REPORTS
·
2024
·
IF 31.6
Annan Chen,Jin Su,Muran Zhou,Mingpei Cang,Yinjin Li,Yunsong Shi,Zhen Zhang,Yangzhi Zhu,Bin Su,Yang Liu,Zuo-Guang Ye,Yusheng Shi,Jüergen Röedel,Huachen Cui,Haibo Zhang,Kun Zhou,Jian Lu,Chunze Yan
Piezoelectric biomaterials, capable of converting electrical energy to mechanical energy and vice versa, are desirable for implantable devices that can achieve biosensing, tissue regeneration, anti-infection, and tumor treatment. However, their low piezoelectricity, simple geometry, and monotonous functionality remain challenging towards practical applications. Here, we report the design and additive manufacturing of a series of biocompatible piezoelectric lattice materials with bone-mimicking designs and ultrasound-regulated electrical responses. Barium calcium zirconate titanate (BCZT) with a piezoelectric coefficient d 33 up to 580 pC/N was synthesized and used as the parent material of the lattices for additive manufacturing. The as-fabricated BCZT lattices have compressive strength comparable to native trabecular bones, making them promising candidates for implantation and in vivo activation. We show that the lattices allow on-demand activation of anti-tumor or osteogenic functions with programmable non-invasive ultrasound stimuli, both in vitro and in vivo . Our findings provide new insights and a widely applicable strategy for developing versatile, non-invasive, and regulatable biomedical devices via bio-mimicking designs and additive manufacturing.
研究领域:
生物医学工程
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材料科学
·
再生医学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Rui Zhang,Pengbin Wang,Qinghu Guo,Jiale Long,Taixiang Huang,Zhonghua Yao,Minghe Cao,Hanxing Liu,Hua Hao
Piezoelectric ceramics with high strain response and low hysteresis are highly in demand for high-performance actuator applications. Unfortunately, the trade-off relationship between large field-induced strain and low hysteresis in piezoelectric ceramics is a key challenge for designing high-performance piezoelectric actuators. Herein, y mol%La-doped 0.10 Pb(In 1/2 Nb 1/2 )O 3 - x PbZrO 3 -(0.90 – x )PbTiO 3 [0.10PIN- x PZ-(0.90-x)PT: y mol%La] ternary relaxor ferroelectric ceramics were prepared by conventional solid-state reaction technique. Pb(In 1/2 Nb 1/2 )O 3 (PIN) as a relaxor end member was introduced into (Pb,La) (Zr,Ti)O 3 (PLZT) system to improve relaxor characteristics and strain properties. A giant strain of 0.23% was obtained in 0.10PIN-0.59PZ-0.31 PT: 8mol%La ceramic at the electric field of 20 kV/cm, with a high piezoelectric d 33 * of 1150 pm/V and low hysteresis H y of 6.4%, exhibiting a potential application in high-performance piezoelectric actuators. Furthermore, the effects of La ion doping and components on the ferroelectric, dielectric and electric field-induced strain properties were investigated, and provides a new way for improve the strain properties of piezoelectric materials .
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）