JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Qingqing Zhu,Xingyu Shi,Xiaojuan Zhang,Xing Zhang,Yizhong Wang,Chunchang Wang
Ultrasonic vibration and light irradiation can be used together to slow down the rapid recombination of light-induced charges during the catalytic process. One way to enhance the catalytic performance is by introducing different elements into the structure. In this study, pure bismuth ferrite (BiFeO 3 ) and manganese (Mn)-doped bismuth ferrite (BFMO) nanomaterials were successfully synthesized by electrostatic spinning. These materials were then tested for their ability to degrade rhodamine B (RhB). The best-performing material was BiFe 0.85 Mn 0.15 O 3 , which achieved almost complete removal of RhB within 100 min. The degradation rate of this material was 3.3 times higher than that of pristine BiFeO 3 . This enhanced catalytic activity can be attributed to the wider range of light absorption and the synergistic enhancement of the piezoelectric response, which promotes the movement of free carriers. In addition, the synthesized catalysts have good stability and reusability , with little metal leaching after multiple uses. Free radical scavenging experiments tests showed that ·OH and holes are the main active species in the catalytic process. This work paves a new approach for creating highly efficient piezoelectric catalysts and expands the application of BiFeO 3 -based materials for wastewater purification.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Jingxian He,Yongshan Ma,Zhen Jiang,Yuan Liu,Zhenfeng Jing,Shuhui Sun,Haixia Zhang,Fengqing Zhang
The aging phenomenon represents a major challenge for to the practical application of ferroelectric devices, primarily because of its detrimental impact on the material's physical and ferroelectric properties. In the present study, Bi 1-x Eu x FeO 3 (x = 0.0, 0.02, 0.04, 0.06) thin films with varying Eu doping concentrations were synthesized on ITO/glass substrates via the sol-gel method. A comprehensive investigation was conducted to analyze the impact of Eu doping on the structural, ferroelectric, ferromagnetic, leakage, and aging properties of the BFO films. X-ray diffraction (XRD) and Raman spectroscopy analyses confirmed the coexistence of R3c and Pnma phases in the film samples. X-ray photoelectron spectroscopy (XPS) analysis revealed the prevalent presence of Fe³ ⁺ and Fe²⁺ in all BEFO films, which effectively inhibited the formation of oxygen vacancies and the Fe³ ⁺ → Fe²⁺ charge transfer. Piezoresponse force microscopy (PFM) results revealed that the film with x = 0.04 exhibited the lowest surface roughness (R a ≈ 4.22 nm). Notably, at x = 0.02, the remanent magnetization (2.5 × 10⁻⁶ emu/g) was twice that of pure BFO. Additionally, at a doping concentration of 0.04, the BEFO₄ film sample exhibited significant, such as a high remanent polarization (88.82 μC/cm²) and a significantly reduced leakage current density (5.92 × 10⁻⁶ A/cm²), which corresponds to a 1.5-order-of-magnitude reduction compared to pure BFO. Furthermore, after 30 days of aging, the BEFO4 sample exhibited superior aging resistance to aging, suggesting its potential for long-term stability and reliability.
研究领域:
材料科学
·
物理学
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产品关联
DOI
高影响因子
ACS Nano
·
2026
·
IF 17.3
Jinzhe Liang,Xianliu Luo,Ya-Qian Shi,Liang-Mei Yang,Caiying Li,Lixian Huang,Yuzhen Ma,Yong Huang,Shulin Zhao
Controlling ferroptosis through material redox dynamics represents a frontier in the field of catalytic nanomedicine. Here, we introduce nonstoichiometric bismuth ferrite (BiFeO3–x) as an H2S-activable semiconductor that couples oxygen-vacancy-enabled charge modulation with endogenous sulfur chemistry to achieve spatiotemporally controlled immunogenic ferroptosis. Upon exposure to tumor-enriched gasotransmitter H2S, BiFeO3–x undergoes a transformation into Bi2S3 while releasing Fe2+ ions to trigger Fenton-like lipid peroxidation. The material’s mixed-valence Fe redox pair amplifies reactive oxygen species generation under 808 nm excitation, coupling photothermal energy dissipation with catalytic ferroptotic stress. Biologically, this multiresponse process initiates mitochondrial collapse, glutathione peroxidase 4 depletion, and lipid peroxide accumulation, driving apoptosis–ferroptosis cascades. In vivo, photoacoustic-guided therapy and mass cytometry profiling reveal profound immune remodeling, such as dendritic cell maturation, CD8+ T cell infiltration, and M1 macrophage polarization, implying the conversion of “cold” colorectal tumors into immunogenic tumor microenvironments. This work establishes a defect-chemistry-oriented design framework for engineering redox-programmable nano semiconductors that translate lattice instability into biological selectivity, bridging ferroelectric materials science and immune oncology.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jiyuan Chen,Feng Luo,Yuanshui Liu,Denghui Jiang,Linzhuang Xing,Zhimin Li
The lead-free BiFeO 3 -BaTiO 3 (BF-BT) based ceramics with large piezoelectric coefficient ( d 33 ) have been desired for promising applications in high-temperature fields. Herein, the 0.7Bi(Fe 0.9985 Mn 0.0015 )O 3 -0.3BaTiO 3 ceramics with different grain sizes are intentionally prepared by solid-state method, and a large d 33 (232 pC/N) and high Curie temperature T c (501 °C) are simultaneously achieved in the case of large grain size (>9 µm). X-ray diffraction and Rietveld refinement analyses indicate that these coarse-grained samples possess stronger rhombohedral distortion and enlarged lattice parameter compared to fine-grained samples, which make domain switching easier and give rise to the increase in strain. As a result, the piezoelectric and ferroelectric properties of such samples are significantly improved with increasing grain size from 3.05 µm to 9.07 µm. In addition, electric domain configuration and field-induced strain further prove that the strong piezoelectric response in coarse-grained samples is attributed mainly to enhanced non-180° domain mobility. This study reveals the origin of large piezoelectric response in coarse-grained BF-BT ceramics, and proposes an effective approach to improve the piezoelectric properties of BF-BT ceramics.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2020
·
IF 7.094
Kai Yin,Qing Xie,Haoou Ruan,Qijun Duan,Fangcheng Lü,Xingming Bian,Tian Zhang
Composite dielectrics with high vacuum insulation properties are integral to today's advanced energy transmission. In this study, 5% mol Yttrium doped BiFeO 3 sub-particles were synthesized by a facile sol-gel route and then were blended with epoxy resin as filler to prepare the epoxy composites (BY5FO/EP) with a wide range of filler content . The multi-electrical investigations were employed, and the results show the BY5FO/EP composites present ultra-high surface insulation performance. As the concentration of filler increases, the dielectric constant of the BY5FO/EP composites exhibited sine-shaped variations. Considering the multiple-layers of filler particles , we determined the dielectric model of composites for a wide range of filler contents by simulation. Meanwhile, the trap depths of BY5FO/EP composites were calculated according to Isothermal Surface Potential Decay, and we found the trapping stability is of sinusoidal relevance with the filler content. The simultaneous sine-variations of dielectric polarization and trap depth lead to the vacuum surface breakdown strength of the composite increased by 111% with the optimal filler content. The results in this paper provide a prospective strategy to realize ultra-high surface insulation in a vacuum and evidence to the applicability of the Electron Triggered Polarization Relaxation theory.
研究领域:
材料科学
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电气工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Sen Chen,Wei Zhang,Jiarong Lv,Jianxu Hu,Ting Wang,Huajie Luo,Jinjun Liu,Weiping Gong,Zhongbin Pan
Lead-free BiFeO3-based ceramics have emerged as compelling candidates for high-power energy storage applications, owing to their exceptional combination of high Curie temperature and large spontaneous polarization. However, their widespread adoption has been hindered by intrinsic limitations including low breakdown strength and substantial hysteresis losses. Herein, we propose a strategy of local structural perturbations that significantly enhances the energy storage performance of BiFeO3-based ceramics through the introduction of (Bi2/9La2/9Sm2/9)ZrO3 (BLSZ). This approach effectively suppresses hysteresis loss and delays polarization saturation by reducing polarization anisotropy and domain-switching barriers, while simultaneously enhancing breakdown strength through highly disordered atomic arrangements with localized lattice distortion and grain refinement. Consequently, the optimized BiFeO3-based ceramic delivers a high energy density of 7.4 J cm–3, surpassing most previously reported BiFeO3-based dielectrics. This study highlights the significant potential of BiFeO3-based ceramics for advanced energy storage while providing crucial design guidelines for high-performance dielectric materials.
研究领域:
材料科学
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陶瓷与介电材料
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能量存储
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固态物理
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产品关联
DOI
PubMed
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 86
·期 12
·3133-3152
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IF 2.43
Liu Gen,Lin Yingzi,Li Siwen,Shi Chunyan,Zhang Daihua
Hierarchical porous TiO 2 photocatalytic nanomaterials were fabricated by impregnation and calcination using a peanut shell biotemplate, and TiO 2 /BiFeO 3 composite nanomaterials with different doping amounts were fabricated using hydrothermal synthesis. The micromorphology, structure, element composition and valence state of the photocatalyst were analyzed using a series of characterization methods, including X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), BET surface area (BET), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflectance (UV-vis), fluorescence spectroscopy (PL) and other technological means. Finally, the degradation mechanism and efficiency of BiFeO 3 composite photocatalyst on the target pollutant triclosan were analyzed using a xenon lamp to simulate sunlight. The results showed that TiO 2 /BiFeO 3 catalyst fabricated using a peanut shell biotemplate has a specific surface area of 153.64 m 2 /g, a band gap of 1.92 eV, and forms heterostructures. The optimum doping amount of TiO 2 /BiFeO 3 catalyst was 1 mol/mol, and the degradation rate was 81.2%. The main active substances degraded were ·O 2 − and ·OH. The degradation process measured is consistent with the pseudo-first-order kinetic model. TiO 2 loading can increase the specific surface area and empty volume of BiFeO 3 and provide more active sites. Through total organic carbon analysis, the mineralization rate of total organic carbon of TiO 2 /BiFeO 3 photocatalyst is 58.9%. h+ and ·OH are the active substances for degradation of triclosan. Relatively speaking, · OH has more obvious inhibition on triclosan and is the main active oxidizing substance.
研究领域:
环境科学
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材料科学
·
光催化
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纳米材料
·
污染物降解
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Chenxi He,Chenglong He,Dongwei Ji,Siting Duan,Yufei Wang,Ningning Sun,Pei Han,Junlin Yang,Yong Li
Ferroelectric materials demonstrate significant potential for microwave absorption (MA) applications due to their spontaneous polarization and field-tunable dielectric response. This study employs electrospinning to fabricate three-dimensional porous BiFeO 3 (BFO) fiber networks. The designed structure promotes dipole polarization and modulates electromagnetic properties, which optimizes impedance matching and thereby enhances MA efficiency. This unique architecture delivers exceptional absorption: a minimum reflection loss ( RL min ) of −49.34 dB at 2.93 mm thickness with an 8.24 GHz effective absorption bandwidth ( EAB ). Moreover, radar cross section (RCS) simulations confirming the material’s effectiveness in electromagnetic wave attenuation for practical stealth applications. This work establishes novel design principles for microstructural engineering of high-performance microwave absorbers.
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2026
·
IF 2.8
Yue Lei,Wan Yu,Wang Yanting,Feng Changhao
Effective detection of n -butanol is essential for human health and environmental protection. Bismuth ferrite is a gas-sensitive material candidate with excellent potential, and rare earth element doping is an effective modification strategy to enhance the gas-sensitive performances of gas sensors. In this work, a series of Y-doped BiFeO 3 nanofibers (BFO, 1% Y-BFO, 3% Y-BFO, and 5% Y-BFO) were prepared by electrospinning. Among them, the gas sensors based on 3% Y-BFO nanofibers exhibited significantly enhanced gas-sensing performances for n -butanol. At an optimum operating temperature of 150°C, the synthesized 3% Y-BFO sensor has a response of 60.2 and a response/recovery time of 9/47 s for 100 ppm n -butanol. In addition, it has a lower limit of detection as low as 0.5 ppm and excellent repeatability. Therefore, gas sensors based on Y-doped BiFeO 3 nanofibers represent a promising solution for the efficient detection of n -butanol.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Yi Ma,Pan Lv,Fang Duan,Jialiang Sheng,Shuanglong Lu,Han Zhu,Mingliang Du,Mingqing Chen
Reasonable design of heterojunctions is considered to be an effective way to construct highly efficient photocatalysts . In this work, Bi 2 S 3 /BiFeO 3 heterojunction nanofibers with tightly integrated interface were prepared by electrospinning technique and in-situ anion exchange method. Various characterizations were conducted to analyze the structure and morphology of Bi 2 S 3 /BiFeO 3 composites. The photocatalytic activities of the obtained Bi 2 S 3 /BiFeO 3 heterojunctions were evaluated by photodegradation of tetracycline hydrochloride (TC) under visible light irradiation. It can be found that Bi 2 S 3 /BiFeO 3 heterojunctions showed enhanced photocatalytic degradation performance, and their photocatalytic activities can be easily optimized by changing the amount of thioacetamide (TAA). When the amount of TAA was 0.1 mmol, the obtained Bi 2 S 3 /BiFeO 3 (TAA-2) sample exhibited the best photocatalytic performance, which was 5 and 6 times of pure BiFeO 3 and Bi 2 S 3 , respectively. Besides, the photocatalytic mechanism was systematically studied by monitoring the active species and radicals, and by performing the optical and photoelectrochemical tests. Accordingly, a direct Z-scheme charge migration mechanism for Bi 2 S 3 /BiFeO 3 heterojunctions was proposed. The enhanced photocatalytic performance of Bi 2 S 3 /BiFeO 3 heterojunctions can be attributed to the improved visible light response and efficient charge separation and transfer.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Kuan Pang,Qiang Zhang,Yan Xu
Hierarchical BiFeO 3 microcages were prepared from a Bi 3+ -modified Fe-MOF using a feasible and controllable strategy, which involved the doping of Bi 3+ into Fe-MOF and subsequent annealing of the precursors. The as-formed BiFeO 3 microcages calcined at 600 °C were hierarchically composed of numerous aggregated nanoflakes. The characteristics of the ordered stacked structure and high purity of the BiFeO 3 architecture are attributable to the slow self-sacrificing template effect. The obtained BiFeO 3 microcages exhibited remarkable visible-light-driven photocatalytic activity for the use in decomposing methylene blue (MB) dye molecules as well as excellent reusability due to their superior magnetic separability. Photocatalytic mechanism studies demonstrated the dominant roles of O 2 •- and • OH intermediate species involved in MB degradation. The presented surface modification and self-sacrifice templating strategy provide possibilities for precise design and control of other novel semiconductors with intriguing morphologies, compositions, and tunable functions.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 51
·期 12
·5712-5723
·
IF 2.302
Rong Nannan,Chu Mengsha,Tang Yulin,Zhang Chao,Cui Xun,He Huichao,Zhang Yunhuai,Xiao Peng
Because of the potential application in photoelectrochemical cells for water splitting, the synthesis of BiFeO 3 (BFO) is receiving increasing attention. A simple, low-cost drop-casting route was used to synthesize Ti ions doped BiFeO 3 thin films and the effects of the Ti ions doping on their crystal structure, morphology, and photoelectrocatalytic activity had been studied. X-ray diffraction results of Ti-BFO films showed that the doping of Ti ions lead to the distortion of crystal structure. Photoelectrochemical measurements indicated that the photoelectrocatalytic activities of BFO film doped with 5 % Ti ions showed the best performance. The UV–Vis absorption spectra of Ti-BFO films showed that the absorption wavelength of BFO doped with 5 % Ti had obvious shift and the band gap decreased. From the results of Mott–Schottky (M–S) plots, we calculated the positions of valence band (VB) and conduction band (CB) for Ti-BFO film. The outcomes showed that the band gap structure of BFO samples doped with 5 % Ti had more positive CB and more negative VB. The calculated photogenic charge carrier concentrations of BFO and Ti (0.05)-BFO were 5.07 × 10 19 and 6.32 × 10 19 cm −3 , respectively. The reduced band gap and increased photogenic charge carrier concentration are the major factors contributing to the enhancement of photoelectrocatalytic performances of Ti-BFO films.
研究领域:
材料科学
·
能源化学
✓ 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）