JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Hongrui Jia,Weitong Zhu,Shuai Yang,Fei Li,Linghang Wang
<001> oriented x Bi(Mg 1/2 Ti 1/2 )O 3 -(0.7- x )Pb(Mg 1/3 Nb 2/3 )O 3 -0.3PbTiO 3 (BMT-PMN-PT) textured ceramics are successfully fabricated by the template grain growth method using BaTiO 3 platelets as template. BMT-PMN-PT textured ceramics with different BMT contents are studied in terms of crystal structure, microstructures, dielectric and ferroelectric properties, and electric field induced strain. The as-fabricated BMT-PMN-PT textured ceramics were found to have a strong orientation along <001> direction. The frequency dispersion of dielectric constant of BMT-PMN-PT textured ceramics increases gradually and its relaxability becomes stronger with increasing BMT content. A large electric-field induced strain (0.42 % at 4 kV/mm) is obtained in 0.25BMT-0.45PMN-0.3PT textured ceramics with Lotgering factor 0.94, which is about 83 % enhancement than that of the randomly oriented ceramics (0.23 % at 4 kV/mm). The strain of 0.25BMT-0.45PMN-0.3PT textured ceramics have a relatively high thermal stability, with a slight decrease from 0.42 % to 0.28 % in the temperature range of 20−100 °C. Our research suggests that 0.25BMT-0.45PMN-0.3PT textured ceramics have a greatly potential for actuator devices applications owing to its advantages of large electric field induced strain response.
研究领域:
材料科学
·
无机非金属材料
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功能陶瓷
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电介质材料
·
先进制造
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Wei Wu,Jianhua Ge,Baiqing Xiao,Zhou Wei,Wan Zhang,Xuyang Zheng
Bi 2 WO 6 with enhanced photocatlytic degradation performance was successfully synthesized by a facile O 3 etching method. The photocatalysts were characterized by X-ray diffraction, scanning electron microscopy, and ultraviolet-visible diffuse reflectance spectra. Characterization results revealed that the O 3 treated Bi 2 WO 6 photocatalyst has abundant of oxygen vacancies, which could effectively restrain recombination of photon-generated carriers, broaden light absorption region, serve as pho- tocatalytic reaction center. Moreover, the photocatalytic activities of the prepared photocatalysts were evaluated by the photocatalytic degradation of benzidine under a xenon lamp irradiation. The photocatalytic activity of treated Bi 2 WO 6 photocatalyst samples with O 3 pose a greater improvement. Among that, the O 3 -Bi 2 WO 6 -3-4 modifying with ozone flux of 3.0 L/min for 4 h photocatalytic degradation of benzidine wastewater reached ~76.0% in 180 min under the irradiation of xenon lamp light (λ = 420 nm), which is about ~2.1 times higher than that of pure Bi 2 WO 6 . Moreover, the photocatalytic activities of the modified Bi 2 WO 6 via O 3 exhibit without significantly decrease after four cycles, indicating that the photocatalyst has a favourable application prospect.
研究领域:
材料科学
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环境催化
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光催化
·
无机化学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Yongjun Huang,Zixiang He,Xiaobin Liao,Yusheng Cheng,Huan Qi
Carcinogenic N , N -Dimethylnitrosamine (NDMA) has been reported to generate significantly during ozonation of fuel additive unsymmetrical dimethylhydrazine (UDMH), the combined ozone/Peroxy-Monosulfate (O 3 /PMS) technology was tried for reducing its formation in this study. The influence of PMS dosages, ozone concentrations, pH, Br - and humic acid (HA) on NDMA formation from UDMH were investigated. In addition, the reduction mechanisms were explored by intermediates identification and Gaussian calculation. The results demonstrated that O 3 /PMS technology was effective on NDMA reduction, reaching an efficiency of 81% with 80 μM PMS. Higher NDMA reduction rates were achieved by O 3 /PMS with increasing pH within the scope of research (from 5 to 9), achieving a maximum of 69.9% at pH 9. The presence of bromide ion facilitated NDMA generation during ozonation, but the reduction efficiency by O 3 /PMS slightly improved from 66.3% to 70.6%. The presence of HA reduced NDMA formation in O 3 /PMS system. The contribution of SO 4 •− on NDMA reduction accounted for ~64%, which was higher than that of •OH (41.4%); however, its promotion role on conversing UDMH to NDMA was lower than O 3 . Therefore, the technology could reduce NDMA formation effectively. In addition, the results of Gaussian calculation manifested that the N atom in -NH 2 group of UDMH was easily attacked not only by •OH but also by O 3 , so it is the key path that determines final NDMA formation. This study would provide reference for reducing NDMA formation during ozonation of UDMH-containing water matrixes.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Chengzuo Gong,Gaoxu Han,Jialin Lin,Qiangfeng Zhang,Binbin Wang,Menghao Yang,Zhenghong Huang,Chunxiao Zhang,Weifeng Wei
O3-type layered oxides hold significant promise as the material for cathodes in sodium-ion batteries for their favorable electrochemical properties, while irreversible structural degradation and harmful phase transitions during cyclic operation limit the practical application of these materials. In this work, we proposed a La3+/Al3+ codoping strategy in O3-Na(Ni1/3Mn1/3Fe1/3)O2 cathode materials and found that batteries with the Na (Ni1/3Mn1/3Fe1/3)0.998La0.001Al0.001O2 (NFM-La/Al) cathodes exhibited not only promoted capacity from 135.80 to 170.42 mAh g–1 at 0.2 C but also significantly enhanced cycling stability, with a 10% improvement in capacity retention compared with NFM cathodes after 300 cycles. Particularly, their rate performance was significantly improved as well. XRD and XPS tests indicated that La could expand the c-axis of NFM due to its larger ionic radius and thus significantly increased Na+ ion diffusion efficiency, and in addition, Al doping could effectively increase the content of Ni2+ and Mn4+ and thus greatly alleviated the negative Jahn–Teller effect caused by Mn3+. Moreover, consistent with XRD analyses, DFT calculations further substantiated the effectiveness of the La/Al codoping strategy by demonstrating the detailed atom substitution mechanism in the NFM crystal lattice. The boosted structure stability and Na+ diffusion kinetics may enhance the potential for practical applications of O3-type oxide cathodes.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·Vol. 54
·期 30
·11581-11587
·
IF 3.3
Haoran Yu,Liang Cao,Jiajia Wang,Jian Guo,Ji Zhang,Shan-Tao Zhang
Pb(Ni1/3Nb2/3)O3-PbZrO3-PbTiO3 (PNN-PZ-PT) is one of the typical relaxor-PT piezoelectric systems. In order to further improve its Curie temperature (Tc) and piezoelectric properties, nominal Pb(Mg1/3Nb2/3)O3 (PMN) is introduced into 2mol% Sm-doped 0.36PNN-0.28PZ-0.36PT to form a (0.36 − x)PNN-xPMN-0.28PZ-0.36PT:0.02Sm (x = 0–0.24) quaternary solid solution. The phase, microstructure, domain structure, and electrical properties of the solid solution ceramics were investigated systematically. All the samples exhibit a single phase perovskite structure and are situated around the rhombohedral-tetragonal morphotropic phase boundary. With increasing x, the Tc increases gradually, while the piezoelectric coefficient d33 increases initially and decreases subsequently, reaching a peak value of 725 pC N−1 at around x = 0.15. In particular, this optimal composition illustrates high performance with Tc = 176 °C, planar electromechanical coupling factor kp = 0.63, remanent polarization Pr = 30 μC cm−2, and coercive field Ec = 8.9 kV cm−1. This study illustrates the viability of incorporating PMN into PNN-PZ-PT to optimize the comprehensive electrical properties, potentially offering a valuable guide for developing high performance relaxor-PT materials.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2017
·
IF 3.454
Teng Zheng,Laihui Luo,Peng Du,Anmeng Deng,Weiping Li
The (0.98- x )(0.6Pb(Mg 1/3 Nb 1/3 )O 3 -0.4PbTiO 3 )- x Pb(Yb 1/3 Nb 1/3 )O 3 -0.02Pb(Er 1/2 Nb 1/2 )O 3 ((0.98- x )(PMN-PT)- x PYN:Er 3+ ) ceramics were prepared through a solid-state reaction method. The phase structure, piezoelectric response, ferroelectric performance and upconversion emission of the ceramics were systematically investigated. The phase structure, the electrical and optical properties are strongly related to the content of PYN. The optimized piezoelectric response and upconversion emissions of the ceramics were achieved near x = 0.12, which locates in the morphotropic phase boundary (MPB) composition. Furthermore, the temperature sensing behaviors of the resultant compounds based on the thermally coupled levels of 2 H 11/2 and 4 S 3/2 of Er 3+ ions in the temperature range of 133–573 K were studied by utilizing the fluorescence intensity ratio technique. Additionally, the thermal effect, which is induced by the laser pump power, of the studied ceramics is also investigated and the produced temperature is enhanced from 268 to 348 K with the pump power rising from 109 to 607 mW.
研究领域:
材料科学
·
光学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Xudong Qi,Kai Li,Enwei Sun,Bingqian Song,Da Huo,Jiaming Li,Xianjie Wang,Rui Zhang,Bin Yang,Wenwu Cao
Recently, the anomalous photovoltaic effect of ferroelectric materials has attracted considerable attention in the construction of efficient solar cells owing to the above-bandgap photovoltage of these materials. In this study, we investigate the anomalous photovoltaic effect of relaxor-based ferroelectric Pb(In 1/2 Nb 1/2 )O 3 -Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (PIMN-PT) ceramics with large remnant polarization and a narrow optical bandgap. Excellent photovoltaic performance with an ultrahigh open-circuit voltage of 23 V (575 V/cm) is achieved, which is higher than the open-circuit voltages of all reported polycrystalline materials with similar thickness. The phase structure, microstructure morphology, domain structure, ferroelectric and optical characteristics are analyzed, which could provide clues to the origin of the ultrahigh open-circuit voltage of PIMN-PT ceramics. The results suggest that the relaxor-based ferroelectric PIMN-PT system is a potential candidate for photovoltaic solar energy conversion devices.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yu-Xin Chang,Yu-Jie Guo,Ya-Xia Yin,Wei-Huan He,Mengmeng Yan,Li-Rong Zheng,Jing Zhang,Qinghua Zhang,Dong Su,Xing Zhang,Jianfeng Mao,Guanjie Li,Shilin Zhang,Sailong Xu
O3-type layered oxide cathodes (NaxTMO2) for sodium-ion batteries (SIBs) have attracted significant attention as one of the most promising potential candidates for practical energy storage applications. The poor Na+ diffusion kinetics is, however, one of the major obstacles to advancing large-scale practical application. Herein, we report bismuth-doped O3-NaNi0.5Mn0.5O2 (NMB) microspheres consisting of unique primary nanoplatelets with the radially oriented {010} active lattice facets. The NMB combines the advantages of the oriented and exposed electrochemical active planes for direct paths of Na+ diffusion, and the thick primary nanoplatelets for less surface parasitic reactions with the electrolyte. Consequently, the NMB cathode exhibits a long-term stability with an excellent capacity retention of 72.5% at 1C after 300 cycles and an enhanced rate capability at a 0.1C to 10C rate (1C = 240 mA g–1). Furthermore, the enhancement is elucidated by the small volume change, thin cathode-electrolyte-interphase (CEI) layer, and rapid Na+ diffusion kinetics. In particular, the radial orientation-based Bi-doping strategy is demonstrated to be effective at boosting electrochemical performance in other layered oxides (such as Bi-doped NaNi0.45Mn0.45Ti0.1O2 and NaNi1/3Fe1/3Mn1/3O2). The results provide a promising strategy of utilizing the advantages of the oriented active facets of primary platelets and secondary particles to develop high-rate layered oxide cathodes for SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2009
·
IF 3.054
Shuang Song,Zhiwu Liu,Zhiqiao He,Yu Li,Jianmeng Chen,Chaolin Li
Biocides usually persist during municipal sewage treatment and are subsequently distributed into aquatic environments. To explore the capability of advanced oxidation processes for the rapid removal of biocides, we examined the total organic carbon (TOC) reduction of 4-chloro-3,5-dimethylphenol (PCMX) with a combination of UV/O 3 . Moreover, the related important parameters, including the mass transfer coefficient and light utilization efficiency, in PCMX degradation were determined. The UV/O 3 experimental results showed a pronounced synergistic effect, leading to the nearly complete elimination of TOC within 75 min. Thus, the effect of operating variables was investigated as a function of pH, ozone dosage, bulk temperature and the initial concentration of PCMX. The efficiency of PCMX mineralization increased with an increase in ozone dose up to 3.1 g h −1 , and a decrease in the initial concentration from 250 to 100 mg L −1 . The optimal pH value was 4.0, and the preferred bulk temperature was 20 °C on the basis of the influence of temperature on reaction rate and ozone solubility. The major aromatic intermediates identified by gas chromatography/mass spectrometry were 2,6-dimethylbenzene-1,4-diol, 2,6-dimethylbenzo-1,4-quinone, 2,6-bis(hydroxymethyl)benzo-1,4-quinone, and 2,6-dimethylbenzo-1,4-aldehyde. Quantitative determination of related carboxylic acid and inorganic anions was done by ion chromatography . On the basis of the identified reaction products, a possible degradation pathway for the UV/O 3 oxidation of PCMX in aqueous media is proposed.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Huihui Liu,Yiping Wang,Jun Chen,Kai Xia,Ying Yang
High-power piezoelectric ceramics require both a high piezoelectric coefficient and a large vibration output. Yet, simultaneous optimization remains challenging because of the intrinsic coupling between polarization activity and mechanical loss. Here, Mn/Nb ratio engineering was applied to 0.9 Pb(Zr 0.5 Ti 0.5 )O 3 -0.1 Pb(Mn 1/3 Nb 2/3 )O 3 -0.01Co 3 O 4 -0.001Fe 2 O 3 (PZT-PMN) ceramics to regulate phase structure and electromechanical properties. An optimized R3m/Cm/P4mm multiphase coexistence was achieved through composition tuning, together with regulated grain growth and polarization behavior. At a Mn/Nb ratio of 0.4, the ceramic exhibits a superior piezoelectric coefficient ( d 33 = 420 pC/N), electromechanical coupling factor ( k p = 0.62), and mechanical quality factor ( Q m = 1608), along with stable d 33 variation <5% from 25 to 275 °C and a maximum vibration velocity of 0.57 m/s, exceeding that of commercial PZT4 under identical conditions. The enhanced performance is associated with the coupled regulation of defect chemistry, phase coexistence, and domain-wall dynamics. A composition-driven strategy for balancing piezoelectric activity and high-power output in PZT-based ceramics is identified.
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 8
·080526
·
IF 3.1
Xiaoning Li,Mengmeng Liu,Wenjuan Zhang,Yanli Zhang,Jiakun Zhou,Wenzhang Zhou,Naixin Wang,Weiwei Xu,Kehua Dai
O3-type NaNi0.4Fe0.2Mn0.4O2 cathode materials are structurally stable and have a high nickel content, allowing for stable high-capacity output. However, their performance needs further improvement. First, we investigated the effects of different sodium contents on the structure, morphology, and electrochemical performance of NaxNi0.4Fe0.2Mn0.4O2(x = 0.85, 0.9, 0.95, 1, 1.05) materials. The Na0.9Ni0.4Fe0.2Mn0.4O2 material exhibited initial discharge specific capacities of 148.11 and 181.80 mAh·g−1 at voltage ranges of 2–4.1 V and 2–4.2 V, respectively. To further optimize the cycling performance of the material, we doped NaNi0.4Fe0.2Mn0.4O2 with different calcium contents. Ca2+ doping significantly enhanced the electrochemical performance of the material. Subsequently, we synthesized Na0.96Ca0.02(NMF)0.95Zn0.05O2, and the dual-doped NMF-Ca0.02Zn0.05 maintains approximately 80% capacity retention at 1–4.05 V, and around 70% as the cut-off voltage increases to 4.15 V in full cells.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Small Methods
·
2026
·
IF 8.7
Huachao Yang,Yuhang Li,Shibo Jiang,Zheng Bo,Yunkai Xu
O3-type layered transition metal oxides are promising cathodes for sodium-ion batteries due to their high initial sodium content and theoretical capacity. However, they suffer from irreversible phase transitions, sluggish Na + diffusion, and lattice strain during cycling, leading to rapid capacity fading and poor rate performance. Herein, we report a high-entropy O3-type layered oxide cathode, NaNi 0.24 Fe 0.24 Mn 0.24 Li 0.07 Mg 0.07 Ti 0.07 Sb 0.07 O 2 (HEO), designed by incorporating near-equiatomic redox-active Ni/Fe/Mn with low-content inactive Li/Mg/Ti/Sb dopants to maximize configurational entropy while maintaining charge neutrality and ionic radius matching. Compared to the benchmark NaNi 1/3 Fe 1/3 Mn 1/3 O 2 (NFM), HEO exhibits single-phase formation, expanded interlayer spacing, narrowed bandgap (from 1.35 to 0.63 eV), and reduced Na + migration barriers. This enables superior rate capability (63.57 mAh g −1 at 10 C with 49.0% retention) and exceptional cycling stability (80.71% retention after 300 cycles at 1 C; 80.09% after 1000 cycles at 5 C). In situ XRD reveals a highly reversible O3 ↔ P3 ↔ OP2 phase transition sequence, suppressing the irreversible O’3 phase in NFM. These improvements stem from entropy stabilization and synergistic multi-cation effects, demonstrating high-entropy engineering as an effective strategy for developing robust, long-lifespan sodium-ion battery cathodes.
✓ 已验证
DOI
PubMed
高影响因子
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