Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121689
·
IF 7.5
Meiling Cai,Xiaojun Miao,Xiaoyan Wang,Xueyan Xue,Hui Zhu,Liping Yang,Xinqian Zhang,Jiao Yin
Heterogeneous catalytic ozonation (HCO) is a promising technology for water purification but is often restricted by low ozone utilization and poor gas-liquid-solid mass transfer. In this work, a dual-enhanced catalytic ozonation system was developed by coupling a nitrogen-doped cotton-straw-derived biochar supported mixed-valent iron catalyst (FeO x -N-BC) with ozone micro-nanobubbles (O 3 -MNBs). The catalyst was synthesized via impregnation and two-step pyrolysis, enabling uniform dispersion of Fe active sites and electronic structure modulation through nitrogen doping. The O 3 -MNBs improved ozone dissolution and transfer efficiency at the interface. Under optimal conditions, the FeO x –N–BC/O 3 –MNBs system achieved an SMX removal efficiency of 83.3 % and a mineralization rate of 37.9 %, with a pseudo-first-order kinetic constant of 0.30 min −1 , significantly outperforming single ozonation. EPR and quenching experiments confirmed a radical-nonradical dual degradation pathway dominated by singlet oxygen ( 1 O 2 , 25.13 %). XPS revealed that C, N, and Fe species underwent synergistic valence state evolution, sustaining ROS generation and catalytic stability. The system maintained 51.1 % removal efficiency after five cycles with negligible anion interference. This study demonstrates a low-cost, efficient, and stable catalytic ozonation strategy, providing a practical route for antibiotic wastewater treatment and valorization of agricultural residues.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Weijia Tang,Yunjiao Li,Kaibing Li,Shijie Jiang,Zhenjiang He
The commercialization of O3-type layered cathodes is obstructed by two intertwined degradation pathways: anisotropic lattice strain accumulation causing mechanical failure and a chemically unstable surface triggering relentless parasitic reactions. Herein, we devise a dual-aspect strategy to concurrently address these coupled challenges through synergistic bulk and interface engineering. We employ Cu2+ as a near-surface lattice strain buffer to deliberately expand Na layers and mitigate Jahn–Teller distortion, which uniformizes internal strain evolution and suppresses crack formation, as directly visualized by in situ XRD and post cycling strain mapping. Simultaneously, an in situ formed phosphate coating functions beyond a passive barrier as an active interfacial purifier, scavenging residual carbonates to construct an electrochemically pristine and stable cathode electrolyte interface. This mutually reinforcing, inside-out synergy enables the modified cathode to deliver a capacity retention of 76% after 300 cycles (vs 53% for the pristine) and exceptional air stability (93% capacity retention after 30 days). This work transcends the conventional additive approach of substitution and coating, establishing a codesign principle that integrates physical strain regulation with interfacial chemistry control for developing ultra-stable layered oxide cathodes.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Wenyi Li,Feng Li,Xiaoming Qiu,Chuangchuang Gong,Min Jiang,Zhenxin Zhao,Xiaomin Wang
Owing to the intrinsic dielectric-magnetic coupling loss mechanism, perovskite-type lanthanide-transition metal oxide (LaTMO 3 ) is considered as a promising candidate for electromagnetic wave absorbing material, but unmodified LaTMO 3 suffers from limited polarization processes and weak super-exchange magnetic response. Herein, we manipulate the TM-O bond properties by regulating the configuration entropy of transition metal sites to address such issues within single-phase LaTMO 3 . Elaborate structural characterization and P-V-L bond theory demonstrate quantitatively the optimization of electromagnetic wave absorption performance mainly stems from the synergistic improvement in TM-O bond distortion degree and covalency, as well as the formation of diverse super-exchange pathways. Consequently, the high entropy La(Cr 0.2 Mn 0.2 Fe 0.2 Co 0.2 Ni 0.2 )O 3 exhibits a minimum reflection loss of −50.68 dB, an effective absorption bandwidth covering entire Ku band of 7.6 GHz. The radar cross section of the structure with La(Cr 0.2 Mn 0.2 Fa 0.2 Co 0.2 Ni 0.2 )O 3 coating are less than −10 dBm 2 within the incident angles -60-60°. This study contributes to a deeper understanding of design and preparation of efficient broadband electromagnetic wave absorbing materials.
研究领域:
材料科学
·
电磁学
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Zhiqiang Zhang,Fan Zhang,Yiwen Niu,Meiyue Li,Jihang Liu,Zhan Jie Wang
Dielectric capacitors typically require high electric fields to achieve excellent energy storage density, which limits the integration, miniaturization, and lifespan of energy storage devices. Therefore, it is essential to obtain good energy storage properties at a lower electric field. In this study, (Ag 0.94 La 0.02 )(Nb 0.85 Ta 0.15 )O 3 (ALNT)-modified (Bi 0.5 Na 0.5 )TiO 3 -based ceramics with improved energy storage characteristics were designed and prepared. The introduction of ALNT is conducive to optimizing the polarization, adjusting the phase composition, disrupting the long-range ferroelectric ordering, and enhancing the dielectric relaxation behavior, leading to an increase in the polarization difference. Accordingly, superior recoverable energy storage density of 3.07 J/cm 3 and high efficiency of 82.7% are synchronously realized under a lower electric field of 150 kV/cm in a 5 mol% ALNT system. In addition, the corresponding sample exhibits wide thermal (40–100°C) and frequency (10–100 Hz) stability and good charge–discharge properties. This study provides a new candidate material for advanced dielectric capacitors that can be applied in lower electric fields.
研究领域:
材料科学
·
电子工程
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高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Wenping Cao,Jiabin Tu,Nuo Xu,Zhuang Wang,Xinyan Xiong,Qianru Lin,Jiazhi Wang,Nan Zhang,Jie Sheng,W.L. Li
Optimizing energy storage performance often involves increasing the discrepancy between maximum polarization and remanent polarization ( P max - P r ) and breakdown strength ( E b ). Here, aging treatment in acceptor doped NBT-based film is taken for increasing both E b and P max - P r by constructing ordered defect dipoles. Enhanced P max - P r value of 80.6 μC/cm 2 and high E b of 2630 kV/cm are obtained in the aged (Na 0.5 Bi 0.5 ) 0.55 Sr 0.45 Ti 0.99 Mn 0.01 O 3 thin film, which can be attributed to the reversible domain switching caused by ordered defect dipoles and low oxygen vacancies concentration. Accordingly, an energy density of 72.4 J/cm 3 with an efficiency of 76.8 % was achieved simultaneously in the aged film, which are approximately raised by 80.6 % and 45.2 %, respectively, compared with the unaged state. The stable energy storage performances are achieved within the scope of operating temperatures (20–200 ◦ C) and frequencies (0.2–10 kHz). These results provide a new route to take usages of aging process for optimizing the energy performance of NBT-based thin films.
研究领域:
材料科学
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凝聚态物理
·
应用物理
·
纳米技术
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 31
·1-11
·
IF 2.8
Li Shanshan,Zhang Duo,Tian Zhongqing,Wang Fei,Meng Fancheng
Ba[(Zn 0.6 Mg 0.4 ) 1/3 Nb (2- x )/3 Sb x /3 ]O 3 (BZMNS, x = 0.15, 0.2, 0.25, 0.3, 0.35) ceramics were synthesized by the conventional solid-state reaction method. The crystal structure and microwave dielectric properties of the ceramics were investigated. X-ray diffraction (XRD) analysis revealed that the BZMNS ceramics exhibit a cubic perovskite structure. The crystal structures were refined, and no secondary phases were detected in all compositions. The doping of Sb 5+ hinders grain growth, and the average grain size first increases and then decreases with the increase of the x value. The dielectric constant shows a downward trend due to the influence of the ionic bond character of B-site ions and the B-site Rattling effect. The packing fraction is the main factor affecting the Q × f value of BZMNS ceramics. As the x value increases, the temperature coefficient of the resonant frequency ( τ f ) gradually decreases. Ion polarizability dilution is the primary mechanism for regulating τ f of BZMNS ceramics. The BZMNS ceramics sintered at 1480 °C with x = 0.3 exhibit optimal microwave dielectric properties ( ε r = 31.44, Q × f = 62,273 GHz (at f₀ = 6.5 GHz), τ f = + 2.48 ppm·°C −1 ), indicating that this ceramic has good application prospects.
研究领域:
材料科学
·
陶瓷
·
微波电子学
·
介电材料
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Qingfeng Liu,Fanbin Hu,Jinhua Shi,Zitong Fei,Chenchen Li,Qi Meng,Peng Dong
The O3-type layered cathode material NaNi 1/3 Fe 1/3 Mn 1/3 O 2 has gained attention due to its cobalt-free composition, low cost, and structural stability. In this study, we employ a “local defect energy state construction” approach to precisely regulate the formation and migration of oxygen vacancies at the atomic scale. Zr 4+ and Sm 3+ are selected to achieve synergistic optimization of both the bulk and surface properties, precisely guiding the formation of local defects and establishing a mechanism that combines bulk defect regulation with surface protection. Zr 4+ bonds strongly with oxygen through 4d–2p orbital hybridization, which helps keep lattice oxygen stable, makes oxygen vacancy distribution more uniform, and improves structural stability. Sm 3+ , with its relatively large ionic radius, facilitates the formation of a stable Sm 2 O 3 surface layer, while the remaining Zr forms a ZrO 2 coating, together providing enhanced protection to the cathode material. High-temperature heat treatment enables the spatial confinement and diffusion of Zr 4+ , constructing a multi-scale defect distribution network that restricts the randomness of vacancies and improves the stability of the sodium ion migration pathways. Compared to the bare cathode material, the modified material exhibits a significant improvement, with the discharge specific capacity increasing from 16.5 mAh g −1 to 107.5 mAh g −1 after 300 cycles at 1C, and the capacity retention rising from 15.73 % to 85.66 %. In full-cell tests with hard carbon as the anode, the material maintained strong electrochemical performance, delivering an initial discharge capacity of 101.1 mAh g −1 at 1C, with 63.47 % capacity retention after 300 cycles. Both theoretical calculations and experimental results demonstrate that this structural design balances surface protection with internal defect regulation, optimizing both structural stability and ionic transport performance.
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PubMed
高影响因子
PLASMA CHEMISTRY AND PLASMA PROCESSING
·
2023
·Vol. 43
·期 6
·1651-1672
·
IF 3.6
Zhang Lei,Zou Zhuorui,Lei Zhang,Jia Yang
In this research, xylene was utilized as a simulated gas, γ-Al 2 O 3 pellets were selected as catalyst carriers, and FeO x , MnO x , CeO x , and CuO x were used as active components to analyze the synergistic treatment of VOCs–O 3 by low-temperature plasma combined with supported catalysts. Different metal oxides and other factors influence the synergistic treatment of VOCs–O 3 . The results showed that the catalytic effect of Fe–Mn/γ-Al 2 O 3 prepared by the equivalent volumes of consecutive impregnation method was better than that of Fe–Mn/γ-Al 2 O 3 prepared by co-impregnation method. When combined with low temperature plasma technology, high-energy electron collision reaction and oxidation reaction between free radicals occurs, which played a synergistic role in the degradation of VOCs–O 3 . The total removal rate of xylene was 94.88%, and the depletion rate of ozone was 84.1%.
研究领域:
環境科學
·
化學工程
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Lei Tan,Qifeng Wu,Zengsheng Liu,Qiheng Chen,Hongling Yi,Zixiang Zhao,Liubin Song,Shengkui Zhong,Xianwen Wu,Lingjun Li
O3-type layered transition metal oxides (Na x TMO 2 ) have attracted extensive attention as a promising cathode material for sodium-ion batteries because of their high capacity. However, the irreversible phase transition especially cycled under high voltage remains a concerning challenge for Na x TMO 2 . Herein, a Ti-substituted NaNi 0.5 Co 0.2 Mn 0.3 O 2 cathode with strongly suppressed phase transition and enhanced storage stability is investigated. The Ti substitution effectively inhibits the irreversible phase transition and alleviates the structural change even charged to 4.3 V during the repeated Na + deintercalation process. After storing in air or water, the original O3 phase structure of the material is integrally maintained without the generation of impurity phase. As a result, the as-prepared material shows excellent long-term cycle stability and rate performance when charged to a high voltage of 4.3 V.
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高影响因子
CERAMICS INTERNATIONAL
·
2015
·Vol. 41
·期 5
·6676-6682
·
IF 2.605
Pei Peng,Ya-Ya Hu,Yong Liu,Shi Chen,Jing Shi,Rui Xiong,Yue Zhang
Magnetoelectric (ME) ceramic composites of CoFe 2 O 4 (CFO) and Pb(Zr,Ti)O 3 (PZT) with varied composition ratios were sintered using a spark plasma sintering (SPS) method. The characterization of the ceramic compositions and morphologies revealed an even distribution of the CFO and PZT phases. Physical property measurements showed that when the CFO mass percent increased from 8% to 15%, the piezoelectric constant and dielectric constant decreased monotonously, while the saturation magnetization and dielectric loss were enhanced. It was determined that a CFO mass percent of 10% or less resulted in a significant change of the polarization behaviour and a clear enhancement of the ME conversion voltage coefficient ( α E ) with an applied magnetic field . In contrast, CFO mass percentages greater than 10% had a reduced α E , and their polarization behaviour was not influenced by an applied magnetic field. With an increasing proportion of CFO in the composite, the α E first increased and then decreased. The maximum value of the α E indicated an optimal proportion of CFO (10%), which is attributed to a competition between the improved magnetostriction and deteriorating electric behaviour in the composite with the addition of CFO.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Jiyou Zhong,Liwei Zeng,Weiren Zhao,Jakoah Brgoch
Broadband near-infrared (NIR) phosphors are in high demand for creating “smart” NIR phosphor-converted light-emitting diode (pc-LED) sources. In this work, a series of Cr3+-substituted NIR-emitting materials with highly efficient, broad, tunable emission spectra are achieved by modifying the simple oxide Ga2O3 using [Mg2+-Ge4+] and [Ga3+-Ga3+] co-unit substitution. The results show that the emission peak can be shifted from 726 to 830 nm while maintaining a constant excitation peak in the blue light region, enabling extensive application. The optical properties stem from changes in the Cr3+ crystal field environment upon substitution. Intriguingly, the temperature-dependent photoluminescence emission peak position shows virtually no change in the [Mg2+-Ge4+] co-substituted materials. This abnormal phenomenon is found to be a comprehensive embodiment of a weakening crystal field environment (red-shift) as the temperature increases and reduced local structure distortion (blue-shift) with increasing temperature. The high quantum yield, NIR emission, and net-zero emission shift as a function of temperature make this phosphor class optimal for device incorporation. As a result, their performance was studied by coating the phosphor on a 450 nm emitting LED chip. The fabricated device demonstrates an excellent NIR output power and NIR photoelectric conversion efficiency. This study provides a series of efficient, tunable, broadband NIR materials for spectroscopy applications and contributes to the basic foundation of Cr3+-activated NIR phosphors.
研究领域:
材料科学
·
光学材料
·
固态照明
·
光子学
·
发光材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Xupeng Yuan,Yangyang Zhang,Lijiao Gong,Baoqing Li,Ling Zhang
NaNbO 3 -based lead-free ferroelectric ceramics are considered to be one of the most promising energy storage materials . In this paper, The (1- x )Na(Nb 0 · 95 Ta 0.05 )O 3 - x (Bi 0 · 5 Na 0.5 )TiO 3 ceramics have been investigated in detail. The SEM images presented that the addition of BNT obviously improved the bulk densities which reached a maximum at x = 0.4, corresponding to a high breakdown field strength of 240 kV/cm. The XRD patterns showed that the strongest diffraction peak was observed in the case of x = 0.4 and 2 θ = 33.2°, implying that the two phases formed a superior mutual solubility, because of which a significant polarization intensity of 38.2 μC/cm 2 was obtained. As a result, the 0.6NaNbO 3 -0.4(Bi 0 · 5 Na 0.5 )TiO 3 ceramics exhibited an excellent discharge energy density of 3.607 J/cm 3 , while the energy storage efficiency was calculated to be 72%.
研究领域:
材料科学
·
陶瓷与复合材料
·
能量存储
·
铁电材料
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DOI
高影响因子
危险品化学品经营许可证（带存储）