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Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications SCIE
期刊论文 | 2025 , 134 | NANO ENERGY
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Abstract :

Piezoelectric materials (PEMs) can convert mechanical energy into electrical energy. Substantial works were performed to optimize PEMs and devices for smart sensing, human monitoring, and medical applications, however, their electromechanical behaviors under such scenarios with different applied frequencies remain unclear. Here, the frequency response behaviors of piezoelectric output current are revealed based on lead-free and lead-based PEMs toward advanced applications. The results show a linear relationship between output current and frequency under short-circuit condition, with the slope varying according to loading force (F) and piezoelectric coefficient (d33). However, when a load resistance (RL) is applied, a nonlinear relationship is shown: the current increases with frequency, reaches a critical point, and subsequently levels off. The saturation current is influenced by F, RL, d33, and device capacitance (C), while the critical frequency is related to RL, C, and action distance. This fundamental behavior of PEMs aligns with Maxwell's displacement current deducing and is wellsupported by circuit simulations and physical modeling. The universality of these results is further confirmed through lead-based PEMs. Open-circuit voltage is unaffected by f, while load voltage exhibits the same nonlinear frequency response as load current. Applying these findings by combining machine learning, human posture monitoring and robot motion recognition were achieved. This work gives a deep understanding of intrinsic frequency response behaviors of electromechanical conversion in PEMs and guides the emerging piezoelectric sensing and monitoring applications.

Keyword :

Frequency response behaviors Frequency response behaviors Mathematical deducing and circuit simulations Mathematical deducing and circuit simulations Output current Output current Piezoelectric materials Piezoelectric materials Sensing and monitoring applications Sensing and monitoring applications

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GB/T 7714 Huang, Xi , Dong, Gaolei , Zhang, Yangdong et al. Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications [J]. | NANO ENERGY , 2025 , 134 .
MLA Huang, Xi et al. "Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications" . | NANO ENERGY 134 (2025) .
APA Huang, Xi , Dong, Gaolei , Zhang, Yangdong , Xu, Wei , Wu, Yourong , Zhao, Chunlin et al. Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications . | NANO ENERGY , 2025 , 134 .
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Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications EI
期刊论文 | 2025 , 134 | Nano Energy
Decoding the intrinsic frequency response behaviors of piezoelectric output current toward advanced sensing and monitoring applications Scopus
期刊论文 | 2025 , 134 | Nano Energy
Simulated sunlight-enhanced peroxymonosulfate activation via S-scheme BiOBr/g-C3N4 aerogel heterojunction for multi-pollutant remediation: Band structure and interface engineering SCIE
期刊论文 | 2025 , 691 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
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Abstract :

The intricate composition of real-world aquatic systems significantly constrains the improved overall performance of powder catalysts, meanwhile their recyclability is inferior to the bulk counterparts (e.g. aerogels). Herein, by loading BiOBr onto g-C3N4 nanosheets and combining them with agarose, an S-scheme heterojunction aerogel (abbreviated as BCA) was synthesized, whose structure was confirmed by the density functional theory calculation. Importantly, the BCA could activate peroxymonosulfate (PMS) under simulated sunlight for degrading multi-pollutant. And the BCA/PMS/Light system efficiently degraded various organic contaminants in aqueous environments, achieving a high degradation rate constant of 0.1503 min- 1 for rhodamine B (RhB), significantly surpassing the performance of CA/PMS/Light (0.0378 min- 1) and BCA/PMS (0.0763 min- 1) systems. Free radical quenching experiment and electron paramagnetic resonance analysis reveal that 1O2, center dot O2-, center dot OH and SO4 center dot- in the BCA/PMS/Light system were pivotal in RhB degradation, with a dominant non-radical mechanism. Additionally, Fukui function analysis pinpointed the primary reaction sites within the RhB molecule. The photocatalytic heterojunction aerogel exhibits outstanding stability, environmental sustainability and versatility, which can guide the development of simulated sunlight-driven PMS activation for multi-pollutant degradation, catering for scalable water treatment applications.

Keyword :

Aerogel heterojunction Aerogel heterojunction BiOBr BiOBr PMS activation PMS activation Pollutant degradation Pollutant degradation

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GB/T 7714 Wu, Yourong , Dong, Gaolei , Zhang, Yangdong et al. Simulated sunlight-enhanced peroxymonosulfate activation via S-scheme BiOBr/g-C3N4 aerogel heterojunction for multi-pollutant remediation: Band structure and interface engineering [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 691 .
MLA Wu, Yourong et al. "Simulated sunlight-enhanced peroxymonosulfate activation via S-scheme BiOBr/g-C3N4 aerogel heterojunction for multi-pollutant remediation: Band structure and interface engineering" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 691 (2025) .
APA Wu, Yourong , Dong, Gaolei , Zhang, Yangdong , Huang, Xi , Jiang, Xingan , Lin, Mei et al. Simulated sunlight-enhanced peroxymonosulfate activation via S-scheme BiOBr/g-C3N4 aerogel heterojunction for multi-pollutant remediation: Band structure and interface engineering . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 691 .
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Simulated sunlight-enhanced peroxymonosulfate activation via S-scheme BiOBr/g-C3N4 aerogel heterojunction for multi-pollutant remediation: Band structure and interface engineering Scopus
期刊论文 | 2025 , 691 | Journal of Colloid and Interface Science
Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors SCIE
期刊论文 | 2025 , 7 (2) , 978-989 | ACS APPLIED POLYMER MATERIALS
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Abstract :

The introduction of dynamic covalent bonds into shape memory polymers (SMPs) has offered the possibility of reprocessing, but multifunctional modifications have not been sufficiently investigated. This work reported photoluminescence thermadapt two-way SMPs (2W-SMPs) based on syndiotactic 1,2-polybutadiene (SPB). The ZnS:Cu particles were modified to form beta-hydroxyester dynamic covalent bonds with epoxidized SPB (ESPB), and a dynamic reversible cross-linked network was constructed inside the shape memory polymer. The crystallization-melting characteristics of ESPB and the photoluminescence ability of ZnS:Cu endow the material with two-way shape memory and photoluminescence properties, respectively. Owing to the solid-state plasticity endowed by dynamic covalent bonds, the thermadapt 2W-SMPs can be recycled at high temperatures. In addition, we designed a "gripper" structure via its shape memory ability. The results showed that under variable temperature conditions, this material can successfully grasp objects. Its good photoluminescence effect ensures that the gripper structure can be accurately positioned in a dim environment.

Keyword :

dynamic covalentbonds dynamic covalentbonds photoluminescence photoluminescence recycling recycling thermadapt thermadapt two-way shape memory polymers two-way shape memory polymers

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GB/T 7714 Feng, Wenliang , Xia, Biao , Lin, Tengfei et al. Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors [J]. | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) : 978-989 .
MLA Feng, Wenliang et al. "Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors" . | ACS APPLIED POLYMER MATERIALS 7 . 2 (2025) : 978-989 .
APA Feng, Wenliang , Xia, Biao , Lin, Tengfei , Wu, Wentao , Wei, Junwen , Gao, Min et al. Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors . | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) , 978-989 .
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Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors Scopus
期刊论文 | 2025 , 7 (2) , 978-989 | ACS Applied Polymer Materials
Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors EI
期刊论文 | 2025 , 7 (2) , 978-989 | ACS Applied Polymer Materials
Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method" SCIE
期刊论文 | 2025 , 7 (2) , 700-709 | ACS APPLIED POLYMER MATERIALS
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Abstract :

The coordination of multiple luminescent centers in a simple and efficient way is a difficult challenge for realizing the tunable multicolor function of fluorescent hydrogels. In this work, we synthesized a fluorescent hydrogel with multicolor conversion via a "one-pot method," which greatly simplifies the tedious steps of preparing fluorescent hydrogels. The luminescence intensity and color of the synthesized DPA-Eu/TPE@PVA hydrogel can be modulated by various stimuli, such as the excitation wavelength, pH, and presence of Fe3+ ions. The entire work centers on the rational introduction of the light-emitting molecule tetrakis(4-hydroxyphenyl)ethylene (TPE-4OH) and the lanthanide ionic complex 2,6-pyridinedicarboxylic acid-Eu (DPA-Eu) into the poly(vinyl alcohol) (PVA) polymer network. Since the luminescence mechanisms of these two molecules differ, with the former emitting light with the aid of the aggregation-induced emission (AIE) effect and the latter emitting light through energy transfer via metal dynamic coordination bonds, individual luminescent molecules can be controlled independently under specific stimuli. The realization of this tunable multicolor fluorescence function has contributed to its application in fields such as sensors, probes, and information encryption.

Keyword :

aggregation-induced emission aggregation-induced emission fluorescenthydrogels fluorescenthydrogels informationencryption informationencryption metaldynamic ligand bonds metaldynamic ligand bonds multicolor multicolor rare earth ions rare earth ions stimulus responsiveness stimulus responsiveness

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GB/T 7714 Liao, Shijie , Li, Zhou , Ren, Lumin et al. Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method" [J]. | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) : 700-709 .
MLA Liao, Shijie et al. "Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method"" . | ACS APPLIED POLYMER MATERIALS 7 . 2 (2025) : 700-709 .
APA Liao, Shijie , Li, Zhou , Ren, Lumin , Lin, Tengfei , Lin, Cong , Zhao, Chunlin et al. Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method" . | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) , 700-709 .
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Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the “One-Pot Method” Scopus
期刊论文 | 2025 , 7 (2) , 700-709 | ACS Applied Polymer Materials
Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the 'One-Pot Method' EI
期刊论文 | 2025 , 7 (2) , 700-709 | ACS Applied Polymer Materials
Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field SCIE
期刊论文 | 2025 , 685 | APPLIED SURFACE SCIENCE
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Abstract :

Photosynthesis of hydrogen peroxide (H2O2) represents a green and cost-effective approach. However, achieving dual-channel photocatalytic oxygen reduction reaction (ORR) and water oxidation reaction (WOR) faces huge challenges due to sluggish carrier transfer and unfavourable WOR thermodynamics for most photocatalysts. Herein, a piezoelectric Step-scheme heterojunction comprising BaTiO3 nanowires and CdS nanoclusters (BTNWCdS heterostructures) is designed for efficient dual-channel H2O2 production. By harnessing the polarization electric field of BTNW, an enhanced H2O2 production rate of 6454.4 mu mol g-1h-1 is achieved in the piezophotocatalytic process by applying the visible light and ultrasound, which is 15.28 times and 1.68 times higher than that of piezocatalysis and photocatalysis alone, respectively. Mechanism analysis confirms that the internal electric field of BTNW-CdS heterostructures not only facilitates two-electron ORR by improving charge separation efficiency, but also overcomes the high uphill thermodynamics of direct two-electron WOR. Notably, the incorporation of lactic acid reacts with photogenerated holes to produce protons, which further facilitates ORR. Our findings demonstrate the potential of utilizing the built-in electric field of piezoelectrics to promote charge-carrier separation and enhance photocatalytic efficiency.

Keyword :

Hydrogen peroxide production Hydrogen peroxide production Photocatalysis Photocatalysis Piezo-photocatalysis Piezo-photocatalysis Polarization electric field Polarization electric field S -scheme heterostructure S -scheme heterostructure

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GB/T 7714 Ye, Yimiao , Zhao, Chunlin , Zhou, Junyi et al. Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field [J]. | APPLIED SURFACE SCIENCE , 2025 , 685 .
MLA Ye, Yimiao et al. "Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field" . | APPLIED SURFACE SCIENCE 685 (2025) .
APA Ye, Yimiao , Zhao, Chunlin , Zhou, Junyi , Jin, Shilin , Deng, Xiangda , Chen, Daqin et al. Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field . | APPLIED SURFACE SCIENCE , 2025 , 685 .
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Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field Scopus
期刊论文 | 2025 , 685 | Applied Surface Science
Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field EI
期刊论文 | 2025 , 685 | Applied Surface Science
Dwelling time influences on discontinuous grain growth and fine/large grain contributions in barium titanate-based electrocaloric ceramics Scopus
期刊论文 | 2024 , 1004 | Journal of Alloys and Compounds
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Abstract :

Electrocaloric cooling based on ferroelectrics is an eco-friendly technology. BaTiO3 (BT)-based ferroelectric ceramics possess a high electrocaloric effect, which is significantly affected by grain size. Herein, fine and large grains' contributions to electrocaloric and related properties in BT-based ceramics are revealed via tuning sintered dwelling time (ts) in discontinuous grain growth (DGG) process with fine and large grains coexistence. With increasing ts, grain size change can be divided into two stages. The main change is the large-grain size (>100–200 μm) and number in the beginning DGG stage, and the properties' evolutions are mainly contributed by large grain change. The bigger grain size of large and fine grains contributes to the higher electrocaloric property, sharper phase transition, ferroelectric polarization (change rate), and coercive field. In the subsequent stage, fine grains gradually grow up (∼4.0–5.0 μm) while large-grain size decreases slightly. Here the properties' evolutions are influenced by the competitive contributions between fine and large grains. Large grain contribution is mainly attributed to the domain size effect, and fine grain contribution should embrace the domain size effect and grain-boundary pinning effect. This work contributes to a broad understanding of fine/large grain contributions in the promising BT-based electrocaloric ceramics. © 2024 Elsevier B.V.

Keyword :

BaTiO3-based ceramics BaTiO3-based ceramics Discontinuous grain growth Discontinuous grain growth Dwelling time of sintering Dwelling time of sintering Electrocaloric properties Electrocaloric properties Fine and large grain contributions Fine and large grain contributions

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GB/T 7714 Huang, X. , Li, H. , Xu, W. et al. Dwelling time influences on discontinuous grain growth and fine/large grain contributions in barium titanate-based electrocaloric ceramics [J]. | Journal of Alloys and Compounds , 2024 , 1004 .
MLA Huang, X. et al. "Dwelling time influences on discontinuous grain growth and fine/large grain contributions in barium titanate-based electrocaloric ceramics" . | Journal of Alloys and Compounds 1004 (2024) .
APA Huang, X. , Li, H. , Xu, W. , Zhao, C. , Wu, X. , Gao, M. et al. Dwelling time influences on discontinuous grain growth and fine/large grain contributions in barium titanate-based electrocaloric ceramics . | Journal of Alloys and Compounds , 2024 , 1004 .
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Excellent low-E energy storage and fluorescence temperature sensing features in Bi0.5Na0.5TiO3-based transparent ceramics Scopus
期刊论文 | 2024 , 496 | Chemical Engineering Journal
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Transparent dielectric ceramics with ultrafast discharge rates and gigantic power densities are ideal candidates for transparent pulse capacitors (TPCs). However, the requirement of a high external electric field and inferior temperature stability hinder practical applications. (Bi0.5Na0.5)TiO3-based ceramics exhibit large polarization and two characteristic dielectric peaks, easy to obtain high energy-storage density under low electric fields (low-E) and maintain stable energy-storage performance (ESP) within a wide temperature range. However, their low optical transmittance (T%) limits their development into TPCs. In this work, to concurrently obtain high T% and excellent ESP and stability under low-E conditions, we propose a collaborative optimization strategy for determining the regulations of grain size, bandgap energy and domain structure. The results show that the pellucidity and energy-storage characteristics improve with decreasing grain and domain sizes. A relatively high T% of 45.6 % (at 710 nm) and recoverable energy-storage density (Wrec ∼ 3.46 J cm−3 at 197 kV cm−1) are obtained for the (1-x)[0.85(Bi0.5-3yNa0.5-yYb3yHoyTiO3)-0.15SrZrO3]-xBaHfO3 ceramics. Additionally, the dielectric temperature stability also results in splendid storage temperature stability (ΔWrec/Wrec < 3.1 % in the range of 0–200 °C). Importantly, codoping Ho/Yb in the ceramics induces excellent fluorescence temperature sensing feature. The multifunctional TPCs have application potential in the field of search and rescue signal transmission, providing ideas for developing novel optoelectronic devices. © 2024

Keyword :

Fluorescence temperature sensing Fluorescence temperature sensing Low-E energy storage Low-E energy storage Relaxor ferroelectrics Relaxor ferroelectrics Thermal stability Thermal stability Transparent ceramics Transparent ceramics

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GB/T 7714 Zeng, X. , Jiang, X. , Lin, J. et al. Excellent low-E energy storage and fluorescence temperature sensing features in Bi0.5Na0.5TiO3-based transparent ceramics [J]. | Chemical Engineering Journal , 2024 , 496 .
MLA Zeng, X. et al. "Excellent low-E energy storage and fluorescence temperature sensing features in Bi0.5Na0.5TiO3-based transparent ceramics" . | Chemical Engineering Journal 496 (2024) .
APA Zeng, X. , Jiang, X. , Lin, J. , Lin, Q. , Wang, S. , Wu, Y. et al. Excellent low-E energy storage and fluorescence temperature sensing features in Bi0.5Na0.5TiO3-based transparent ceramics . | Chemical Engineering Journal , 2024 , 496 .
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Origin of ultrahigh-performance barium titanate-based piezoelectrics: Stannum-induced intrinsic and extrinsic contributions Scopus
期刊论文 | 2024 , 15 (1) | Nature Communications
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Despite the pivotal role of stannum doping in achieving ultrahigh piezoelectric performance in barium titanate-based ceramics, the fundamental mechanisms underlying this enhancement remain elusive. Here, we introduce a single variable nonstoichiometric stannum strategy in lead-free barium titanate-based ceramics with giant piezoelectricity, revealing that stannum doping contributes intrinsically and extrinsically to enhance piezoelectricity. Density functional theory calculations elucidate the intrinsic enhancement of polarization arising from lattice distortion and increased space for titanium-oxygen bonds induced by optimal stannum doping, which is corroborated by Rayleigh analysis. A phase transition from ferroelectric multiphase coexistence to paraelectric phase is observed, alongside a rapid miniaturized and eventually disappeared domains with increasing stannum doping. This evolution in phase structure and domain configuration induces a nearly vanishing polarization anisotropy and low domain wall energy, facilitating easy polarization rotation and domain wall motion, thereby significantly contributing to the extrinsic piezoelectric response. Consequently, the origins of ultrahigh performance can be attributed to the synergistic effect of stannum-induced intrinsic and extrinsic contributions in barium titanate-based ceramics. This study provides fundamental insights into the role of doping elements and offers guidance for the design of high-performance piezoelectrics. © The Author(s) 2024.

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GB/T 7714 Wu, B. , Zheng, H. , Wu, Y.-Q. et al. Origin of ultrahigh-performance barium titanate-based piezoelectrics: Stannum-induced intrinsic and extrinsic contributions [J]. | Nature Communications , 2024 , 15 (1) .
MLA Wu, B. et al. "Origin of ultrahigh-performance barium titanate-based piezoelectrics: Stannum-induced intrinsic and extrinsic contributions" . | Nature Communications 15 . 1 (2024) .
APA Wu, B. , Zheng, H. , Wu, Y.-Q. , Huang, Z. , Thong, H.-C. , Tao, H. et al. Origin of ultrahigh-performance barium titanate-based piezoelectrics: Stannum-induced intrinsic and extrinsic contributions . | Nature Communications , 2024 , 15 (1) .
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Oxygen vacancy engineering and rare earth ion modification in Er-doped Bi0.5Na0.5TiO3–BaTiO3 for piezo-photocatalysis Scopus
期刊论文 | 2024 , 50 (17) , 30887-30893 | Ceramics International
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The pursuit of high-performance piezo-photocatalysts through structural modifications has been a focal point of investigation within the realm of related scientific disciplines. In this study, we successfully designed Er-doped Bi0.5Na0.5TiO3–BaTiO3 combined with rare earth ion doping and solid solution modification, and the prepared particles exhibited homogeneous grain sizes and optimized concentrations of oxygen vacancies (OV). The synergistic incorporation of OV (accelerator for catalytic reaction) and Er3+ results in an impressive 12-fold enhancement of the piezo-photocatalytic rate when degrading the Rhodamine B dye. The optimal composition 0.96BNT-0.04BT-Er demonstrates outstanding electrochemical properties, including a superior photocurrent response and minimal impedance, highlighting its exceptional performance in piezo-photocatalysis. The fundamental enhancement in catalytic performance can be attributed to the reconfiguration of the band structure of 0.96BNT-0.04BT-Er, which has been meticulously calculated utilizing DRS and VB-XPS and the internal mechanism was explained in detail. This research serves as a source of inspiration for the investigation of solid solutions among piezo-photocatalysts and sheds light on the vital role of band structure in governing catalytic performance. © 2024 Elsevier Ltd and Techna Group S.r.l.

Keyword :

Degradation Degradation Er-doped Bi0.5Na0.5TiO3–BaTiO3 Er-doped Bi0.5Na0.5TiO3–BaTiO3 Oxygen vacancy Oxygen vacancy Piezo-photocatalysis Piezo-photocatalysis Solid solution Solid solution

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GB/T 7714 Wang, P. , Zhong, S. , Wang, Y. et al. Oxygen vacancy engineering and rare earth ion modification in Er-doped Bi0.5Na0.5TiO3–BaTiO3 for piezo-photocatalysis [J]. | Ceramics International , 2024 , 50 (17) : 30887-30893 .
MLA Wang, P. et al. "Oxygen vacancy engineering and rare earth ion modification in Er-doped Bi0.5Na0.5TiO3–BaTiO3 for piezo-photocatalysis" . | Ceramics International 50 . 17 (2024) : 30887-30893 .
APA Wang, P. , Zhong, S. , Wang, Y. , Zou, L. , Yu, F. , Lin, C. et al. Oxygen vacancy engineering and rare earth ion modification in Er-doped Bi0.5Na0.5TiO3–BaTiO3 for piezo-photocatalysis . | Ceramics International , 2024 , 50 (17) , 30887-30893 .
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Giant Capacitive Energy Storage in High-Entropy Lead-Free Ceramics with Temperature Self-Check SCIE
期刊论文 | 2024 , 36 (46) | ADVANCED MATERIALS
WoS CC Cited Count: 3
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Abstract :

Considering the large demand for electricity in the era of artificial intelligence and big data, there is an urgent need to explore novel energy storage media with higher energy density and intelligent temperature self-check functions. High-entropy (HE) ceramic capacitors are of great significance because of their excellent energy storage efficiency and high power density (PD). However, the contradiction between configurational entropy and polarization in traditional HE systems greatly restrains the increase in energy storage density. Herein, the contradiction is effectively solved by regulating the octahedral tilt and cationic displacement in ABO3-type perovskite HE ceramics, i.e., (1-x)[0.6(Bi0.47Na0.47Yb0.03Tm0.01)TiO3-0.4(Ba0.5Sr0.5)TiO3]-xSr(Zr0.5Hf0.5)O3 (BNYTT-BST-xSZH). Combining the tape-casting process and cold isostatic pressing, the optimal BNYTT-BST-0.06SZH ceramic displays a large recoverable energy storage density (10.46 J cm-3) at 685 kV cm-1 and a high PD (332.88 MW cm-3). More importantly, due to Tm/Yb codoping, abnormal fluorescent negative thermal expansion and excellent real-time temperature sensing are developed, thus the application of fault detection and warning in high-voltage transmission line systems is conceptualized. This study provides an effective strategy for enhancing the polarization of energy-storing HE ceramics and offers a promising material for overcoming the problems of insufficient capacitor density and thermal runaway in terminal communication. Herein, octahedral tilt and cationic displacement are observed in high entropy (HE) BNT- based ceramics. On the basis of tape-casting process and cold isostatic pressing, the optimal ceramics display a large Wrec (10.46 J cm-3) at 685 kV cm-1 and a high power density (332.88 MW cm-3). Importantly, Tm/Yb codoping endows the ceramics with fluorescent temperature self-check feature. image

Keyword :

energy storage ceramics energy storage ceramics fluorescent negative thermal expansion fluorescent negative thermal expansion high-entropy (HE) high-entropy (HE) octahedral tilt octahedral tilt relaxor ferroelectrics relaxor ferroelectrics

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GB/T 7714 Zeng, Xiangfu , Lin, Jinfeng , Shen, Jie et al. Giant Capacitive Energy Storage in High-Entropy Lead-Free Ceramics with Temperature Self-Check [J]. | ADVANCED MATERIALS , 2024 , 36 (46) .
MLA Zeng, Xiangfu et al. "Giant Capacitive Energy Storage in High-Entropy Lead-Free Ceramics with Temperature Self-Check" . | ADVANCED MATERIALS 36 . 46 (2024) .
APA Zeng, Xiangfu , Lin, Jinfeng , Shen, Jie , Chen, Yan , Xu, Wei , Tang, Luomeng et al. Giant Capacitive Energy Storage in High-Entropy Lead-Free Ceramics with Temperature Self-Check . | ADVANCED MATERIALS , 2024 , 36 (46) .
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