ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Zhongbin Pan,Lingmin Yao,Jiwei Zhai,Haitao Wang,Bo Shen
One-dimensional (1D) materials as fillers introduced into polymer matrixes have shown great potential in achieving high energy storage capacity because of their large dipole moments. In this article, 1D lead-free 0.5(Ba0.7Ca0.3)TiO3–0.5Ba(Zr0.2Ti0.8)O3 nanofibers (BCZT NFs) were prepared via electrospinning, and their formation mechanism was systematically studied. Polypropylene acyl tetraethylene pentamine (PATP) grafted into the surface of BCZT NFs was embedded in the polymer matrixes, which effectively improved the distribution and compatibility of the fillers via chemical bonding and confined the movement of the charge carriers in the interface filler–matrix. The energy density at a relatively low electric field 380 MV m–1 was increased to 8.23 J cm–3 by small loading of fillers, far more than that of biaxially oriented polypropylene (BOPP) (≈ 1.2 J cm–3 at 640 MV m–1). Moreover, the nanocomposite loaded with 2.1 vol % BCZT@PATP NFs exhibits a superior discharge speed of ≈0.189 μs, which indicates the potential application in practice. The finite element simulation of electric potential and electric current density distribution revealed that the PATP grafted into the BCZT NFs surface could significantly improve the dielectric performances. This work could provide a new design strategy for high-performance dielectric polymer nanocomposite capacitors.
研究领域:
材料科学
·
能源存储
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DOI
PubMed
高影响因子
Materials Today Energy
·
2026
·
IF 8.1
Peijun Zhu,Xin Zhou,Jiahao Lu,Zhixiong Zou,Liang Zhao,Ruizhi Yang
O3-type layered oxides are considered as potential materials for sodium-ion batteries (SIBs) because of their cost competitiveness and high reversible capacity. Whereas, their commercialization is limited by sluggish Na + kinetics, irreversible phase transition, and poor air stability. Herein, to address these challenges, we propose zirconium (Zr) doping to regulate the structure of O3-NaCu 0.2 Fe 0.3 Mn 0.5 O 2 (CFM). With the incorporation of Zr into CFM, the diffusion channel is expanded, and the detrimental phase transition is suppressed, thereby the Na + diffusion kinetics is facilitated and the layered structure is stabilized. The optimized NaCu 0.15 Fe 0.3 Mn 0.5 Zr 0.05 O 2 (CFM-Zr0.05) cathode delivers a high capacity of 121.5 mAh g −1 and a favorable capacity retention of 70% after 400 cycles at 1C. When paired with hard carbon anode, the full cell maintains 84.8% of its initial capacity after 100 cycles at 0.5C, demonstrating promising practical application potential. Furthermore, Zr-doped CFM cathode demonstrates enhanced air stability by mitigating Na + /H + exchange. This work presents a rational design strategy to achieve high-performance O3-type layered oxide cathodes, benefitting the development of SIBs for large-scale energy storage.
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高影响因子
ACS Applied Materials & Interfaces
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2026
·
IF 7.8
Zhehui Zhang,Xiaohua Zhang,Runkang Li,Jie Zhang,Jinyan Zhao,Wei Ren,Zhenxing Yue
Piezocatalysis has emerged as a promising technology for environmental remediation by harnessing mechanical energy to drive redox reactions. In this study, Sm2O3-doped (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) solid solutions have been synthesized via a facile solid-state reaction to systematically investigate the effects of Sm3+ doping on the phase structure, defect chemistry, and piezocatalytic activity. Rietveld refinement, transmission electron microscopy, and Raman spectroscopy all confirm the coexistence of rhombohedral, orthorhombic, and tetragonal phases. The morphotropic phase boundary (MPB) promotes polarization rotation and enhances the piezoelectric response. The thermally stimulated depolarization current (TSDC) measurements reveal that the lowest defect (particularly oxygen vacancy) density is found in the BCZT samples doped with 0.02 wt % Sm2O3, which enable the materials to possess exceptional piezocatalytic performance, yielding a high degradation efficiency (96.8%) of rhodamine B within 30 min at a rate constant of 0.1156 min–1. Carrier separation and migration capabilities have been boosted through electrochemical and band structure analyses. This work indicates that Sm2O3 doping introduces local structural heterogeneity and optimizes the defect state for the host materials, providing an effective strategy for designing high-performance eco-friendly piezocatalysts.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Weiliang Li,Guohu Chen,Guangpeng He,Junzhou Xie,Dan Liang,Shiming Qiu,Chunliu Li,Wenwei Wu,Xuehang Wu
Charging O3-type layered-oxide cathodes to a high cutoff voltage of 4.3 V (vs. Na + /Na) can enhance the energy density of sodium-ion batteries (SIBs). However, the irreversible oxygen redox reaction at high voltages often leads accelerated capacity degradation. Herein, a series of Ga 3+ -doped O3-type Na 0.9 Zn 0.07 Ni 0.38–0.5x Ga x Mn 0.45–0.5x Ti 0.1 O 2 cathode materials are prepared, and the impact of Ga 3+ doping on their bulk/interface properties and electrochemical performance is systematically examined. Ga 3+ incorporation enhances the structural ordering of the layered framework and widens Na + transport pathways, thereby reducing Na + transport barrier. The Ga 3+ -doped material demonstrates superior structural reversibility and mechanical stability compared to the pristine counterpart during cycling. As evidenced by the density functional theory calculations, Ga 3+ doping modulates the O 2p state near the Fermi level, mitigating the charge compensation mechanism of lattice oxygen, oxygen vacancy formation, and electrolyte decomposition at high voltages. Consequently, within the voltage range of 2.2–4.3 V, Na 0.9 Zn 0.07 Ni 0.35 Ga 0.06 Mn 0.42 Ti 0.1 O 2 exhibits a higher capacity retention after 100 cycles at 100 mA g −1 (86.4 % vs. 68.1 %) and better rate capability at 2000 mA g −1 (94.1 mAh g −1 vs. 80.0 mAh g −1 ) than Na 0.9 Zn 0.07 Ni 0.38 Mn 0.45 Ti 0.1 O 2 . This work provides valuable insights into the role of Ga 3+ in high-voltage O3-type layered oxides and offers guidance for the design of high-entropy cathode materials for SIBs.
研究领域:
材料科学
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能源存储与转换
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DOI
PubMed
高影响因子
Separations
·
2025
·Vol. 12
·期 10
·277
·
IF 2.7
Hang Yu,Kexin Tang,Jingqi Li,Linxi Dong,Zuo Tong How,Dongming Wu,Rui Qin
Biologically treated swine farm wastewater still contains high levels of refractory organics, humic substances and antibiotic residues, posing environmental risks and limiting opportunities for water reuse. Wastewater treatment by ozonation alone suffers from low mass transfer efficiency and selective oxidation. To overcome these limitations, a catalytic ozonation process (O3/Fe2+/H2O2) was applied and optimized using Response Surface Methodology (RSM) based on single-factor experiments and Central Composite Design (CCD) for advanced swine farm wastewater treatment. The optimal conditions ([O3] = 25.0 mg/L, [Fe2+] = 25.9 mg/L, [H2O2] = 41.1 mg/L) achieved a COD removal of 44.3%, which was 86.8% higher than that of ozonation alone, and increased TOC removal to 29.5%, indicating effective mineralization. Biodegradability (BOD5/COD) of swine farm wastewater effluent increased from 0.01 to 0.34 after the catalytic ozonation treatment. Humic-like and fulvic-like substances were removed by 93.7% and 95.4%, respectively, and antibiotic degradation was significantly accelerated and enhanced. The synergistic process improved ozone utilization efficiency by 33.1% and removed 53.95% of total phosphorus through Fe3+-mediated coprecipitation. These findings demonstrate that with catalytic ozone decomposition and production of hydroxyl radicals, the O3/Fe2+/H2O2system effectively integrates enhanced ozone utilization efficiency, radical synergy, and simultaneous pollutant removal, providing a cost-effective and technically feasible strategy for advanced swine farm wastewater treatment and safe reuse.
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高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Yan Shao,Ming Qiao,Jintao Wu,Yifan Yan,Huanhao Chen,Xueying Zhang
This study presents an innovative and eco-friendly method for wastewater treatment, emphasizing the degradation of tetracycline hydrochloride (TCH) through the use of monolithic materials in a trickle-bed dielectric-barrier-discharge (DBD)-based plasma reactor. Modifications to monolithic surface coatings can be utilized to investigate their impact their effects on plasma degradation and energy efficiency. Loading graphitic carbon nitride (g-C 3 N 4 , CN) onto the surface of a monolithic material allows for the modulation of functional groups on the material's surface and the homogeneity of liquid film flow, thereby influencing the generation of active substances and mass transfer at the gas-liquid interface. This study employed hydrothermal techniques to synthesize hydroxyl-grafted and fluorine-grafted g-C 3 N 4 coatings on the surface of open-cell ceramic foam (CN-OH@CF and CN-F@CF, respectively). The CN-OH-6@CF/plasma system exhibits the highest degradation efficiency at 91.1 % and an energy efficiency of 0.5 g/kWh. Active substances generated by plasma, such as ozone (O 3 ), hydroxyl radicals ( OH), and hydrogen peroxide (H 2 O 2 ), were quantified in a liquid falling film DBD-based plasma system. In the CN-OH-6@CF/plasma system, the concentration of OH was 4.55 mg/L at 60 min, the yield H 2 O 2 exceeded 4.04 mg/L and the concentration of O 3 reached 1.17 mmol/L at 60 min. These values were significantly higher than those observed in the CN@CF/plasma or CN-F@CF/plasma systems. The incorporation of – OH groups in CN coatings significantly enhances the production of the direct plasma product O 3 and optimizes O 3 mass transfer at the gas-liquid interface, achieving up to 85 % O 3 contribution in the CN-OH-6@CF/plasma system. The electron transfer number of 2.7 and the H 2 O 2 selectivity of 64.5 % for grafting − F on CN coatings support the selective generation of H 2 O 2 via a two-electron reaction process, as evidenced by rotating ring-disk electrode tests. The selective generation of H 2 O 2 is not conducive to energy efficiency and promotes accelerated degradation. O 3 , in conjunction with H 2 O 2 , promotes the acceleration of its decomposition and the production of OH.
研究领域:
环境科学
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材料科学
·
等离子体技术
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Ke Song,Liyan Xue,Minzhong Huang,Kaixian Wang,Zhiyi Wang,Haiying Xin,Fan Yang,Fengzhi Tan,Heng Chen
The development of multifunctional protective materials with electromagnetic wave absorption and (n, γ) radiation shielding properties is urgently required to guarantee secure functioning of space nuclear power sources. In this work, the multicomponent perovskite ferrites (Ca 0.2 Nd 0.2 Gd 0.2 Yb 0.2 Bi 0.2 )FeO 3 (RE-1), (Ca 0.2 Nd 0.2 Gd 0.2 Ho 0.2 Bi 0.2 )FeO 3 (RE-2), and (Ca 0.2 Nd 0.2 Gd 0.2 Ho 0.2 Bi 0.2 ) (Fe 0.9 Ti 0.1 )O 3 (RE-3) were prepared by the sol-gel method. Through multicomponent regulation, the dipole polarization and interfacial electronic transitions can be affected by the lattice distortion effect, which enhances the electromagnetic wave absorption characteristics. With an effective absorption bandwidth of 2.92 GHz and a minimum reflection loss of −46.94 dB, RE-3 exhibits the most efficient electromagnetic wave absorption of the three manufactured samples. Regarding the shielding of neutrons, the shielding efficiency of the RE-3 (45 wt%)-polypropylene (RE-3/PP 3 ) reached 99.78 %, which is mainly due to the large neutron absorption cross section of the rare-earth element Gd. With respect to the γ-ray protection capabilities, the lead equivalent values for the RE-3/PP 3 composites are 0.5083 mmPb at a 65 keV energy when narrow-band filtered X-rays are used and 1.1977 mmPb at a 1250 keV energy when a 60 Co gamma source is used. These findings indicate that multicomponent regulation can enhance the Compton effect by altering the valence electron coverage space and that rare-earth elements significantly improve the γ-ray shielding effectiveness of a material in the weak absorption region of lead. In this work, the integration of electromagnetic wave absorption and (n, γ) radiation shielding properties was achieved by multicomponent regulation, which provides a novel tactic for the developing multifunctional protective materials used in the field of deep space exploration.
研究领域:
材料科学
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核物理学
·
电磁学
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DOI
高影响因子
ACS ES&T Engineering
·
2025
·
IF 6.7
Zhu Liang,Jianjun Zhang,Yingfei Sun,Xinyu Nie,Chengzhi Zhu,Kaimin Shih,Bohua Wen,Xiao-yan Li,Lin Lin
In addressing the expensive transportation and disposal cost of the waste activated sludge (WAS), an in situ sludge reduction strategy was developed in this study based on H2O2/O3 lysis and a cryptic growth process. The critical roles of sludge solubilization and biodegradability of sludge lysate were analyzed comprehensively. Under a dosage of 0.36 g O3/g mixed liquor volatile suspended solids (MLVSS), H2O2 addition (H2O2/O3 molar ratio was 0.25) led to a significant improvement of sludge cell lysis performance in terms of the MLVSS reduction ratio (35.2% vs 26.3%). Compared with O3 alone, the sludge lysate treated with H2O2/O3 exhibited a higher biodegradability, as the value of BOD5/COD increased from 0.72 to 0.79, accompanied by mean specific rates of 6.71 and 7.42 h–1, respectively. Reintroduction of the H2O2/O3-treated sludge into the mainstream biological process facilitated further hydrolysis of oxidized sludge fragments, achieving an overall sludge reduction ratio of 29.1% without adversely affecting the effluent quality adversely. A pilot-scale experiment at 2.4 m3/d treatment capacity also demonstrated a similar sludge reduction performance of 28.1% in term of MLVSS. Economic analysis revealed that the net benefit of the in situ sludge reduction reached 132/t dry sludge (DS), highlighting the significant potential of the combined H2O2/O3 method for effective sludge reduction.
研究领域:
环境工程
·
废水处理
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DOI
高影响因子
Journal of Environmental Sciences
·
2024
·
IF 5.9
Zheng Qi,Zaihui Huang,Chunguang Liu
Advanced oxidation processes (AOPs) exhibit significant potential for water disinfection due to their generation of large quantities of highly oxidizing free radicals. However, the neglect of viable but nonculturable (VBNC) cells obscures their true disinfection efficacy and potential environmental health risks. Therefore, the study evaluated the disinfection effectiveness and mechanisms of typical AOPs, including Fe/H 2 O 2 , Fe/persulfate (PS), and O 3 , from the perspective of the production of VBNC bacteria. The results indicate that Fe/PS exhibits the strongest bacterial inactivation rate (99.94%), and the cells lose their ability to reactivate. Fe/H 2 O 2 and O 3 induce more cells to enter the VBNC state compared to Fe/PS. Moreover, different AOPs result in varying levels of free radical production and utilization efficiency, with SO 4 •− and O 3 exhibiting greater selectivity in deactivating bacteria compared to HO • . The inhibition of VBNC bacteria production by Fe/PS treatment may be attributed to the combined action of HO • and SO 4 •− on microorganisms, leading to oxidative stress and metabolic disruption in bacteria through the inhibition of biofilm formation and aminoacyl-tRNA biosynthesis ( p < 0.05), thereby causing direct bacterial death rather than entry into the VBNC state. In contrast, Fe/H 2 O 2 and O 3 result in the upregulation of the metabolism of alanine, aspartate, and glutamate, as well as styrene degradation capacity by the bacteria, leading to the production of more VBNC bacteria. Overall, the study offers insights into mitigating potential biological risks in water disinfection and developing environmentally friendly and efficient disinfection technologies.
研究领域:
环境科学
·
微生物学
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2021
·
IF 5.165
Jun Sun,Tushagu Abudouwufu,Congcong Jin,Zhiyong Guo,Min Zhang
A new alkali-metal iodate, K6(IO6H4)(HI2O6)(HIO3)2(IO3)4·2H2O (KIOH), was successfully grown at room temperature by a slow evaporation method. To our knowledge, the title compound is the first alkali-metal iodate containing isolated [I5+O3] and [I7+O6] units in one structure. Both the bond valence sum and X-ray photoelectron spectroscopy confirmed this phenomenon, which is consistent with the single-crystal data. Also, the theoretical calculation results showed that the title compound is a potential birefringent material. What is more, the low-cost growth of centimeter-sized crystals for the title compound greatly enriches the structural chemistry of the iodate system.
研究领域:
无机化学
·
晶体学
·
材料科学
·
光学材料
·
固态化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 2
·101
·
IF 2.8
Guo Jingyuan,Ha Yuan,Wei Cheng,Gu Ran,Chen Xing,Zhou Chaoyi,Li Zhimin
Sodium-ion batteries (SIBs) hold great promise for large-scale energy storage, but the phase instability and transition-metal valence state fluctuations of layered oxide cathodes severely limit their cycling stability and rate capability. In this work, eleven high-entropy layered oxide cathodes with the general formula NaMn x Fe y Ni 1–x–y TMzO ₂ (T = Zn, Cu, Co, Al, Li, etc.) were synthesized to investigate the impact of high-entropy doping on phase-transition behavior and ion diffusion mechanisms. Two representative compositions of N 0.25 FM-ZCCAL 0.03 and N 0.3 FM-ZCCAL 0.02 were compared in detail. Although N 0.3 FM-ZCCAL 0.02 delivered a higher initial capacity (164.46 mAh g −1 ), its cycling retention (57.98%) was significantly inferior to that of N 0.25 FM-ZCCAL 0.03 (77.73%). Ex situ XRD, XPS, GITT, and EIS analyses collectively reveal that both N 0.25 FM-ZCCAL 0.03 and N 0.3 FM-ZCCAL 0.02 benefit from the synergistic effect of multivalent cations (Zn 2+ , Cu 2+ , Al 3+ , Li + , and Co 2+ ), which effectively suppress the Mn 3+ /Mn 4+ redox fluctuation, stabilize the Fe 3+ state, and alleviate Jahn–Teller distortion. Despite these shared advantages, the two compositions exhibit markedly different structural evolution behaviors. Specifically, N 0.25 FM-ZCCAL 0.03 undergoes a highly reversible O3 → P3 → OP2 phase transition, whereas N 0.3 FM-ZCCAL 0.02 experiences multiphase coexistence and NiO precipitation, leading to irreversible structural degradation. The formation of NiO can be attributed to the interplay between nickel over-oxidation and structural instability during high-voltage cycling. Moreover, N 0.25 FM-ZCCAL 0.03 exhibits a higher Na + diffusion coefficient (5.68 × 10 –9 cm 2 s −1 ) and lower charge-transfer resistance (8.2 Ω), demonstrating markedly enhanced electrochemical kinetics compared to N 0.3 FM-ZCCAL 0.02 . This work highlights the critical role of high-entropy doping in regulating phase transitions and electronic structures, providing mechanistic guidance for the rational design of high-performance sodium-ion battery cathodes.
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高影响因子
JOURNAL OF PHYSICAL CHEMISTRY A
·
2025
·
IF 2.8
Qiyue Xiao,Xiang He,Xi Xi,Zhicheng Ma,Mingsong Dong,Sijie Wen
Heterogeneous reactions of volatile organic compounds (VOCs) with mineral dust can influence secondary aerosol formation in the atmosphere. This study investigated the heterogeneous reactions of C3H6/O3 in the presence of NH3 on α-Fe2O3 particles using a gas-flow system combined with Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) under simulated different relative humidity (RH) conditions. The results indicate that a secondary organic aerosol (SOA) is formed from the appearance of η2(N,O) bands at 1341 cm–1 and R-COOH bands at 1476 and 1608 cm–1. C3H6 reacts with O3 to form the Criegee intermediates (CIs) such as CH3HCOO and CH2OO. Some of these CIs are neutralized with NH3 to form amides, while others react with aldehydes to form intermediates that finally decompose into carboxylic acids. Water molecules play negative potential roles in the formation of SOA on α-Fe2O3 particles. Under continuous RH changes, the formation rate of organic amides increases from 1.07 × 1016 to 2.73 × 1016 ions·g–1·s–1, while the formation rate of carboxylic acids increases from 9.39 × 1015 to 2.11 × 1016 ions·g–1·s–1 with decreasing RH in the range of 80–0%. Furthermore, the reactive uptake coefficient for NH3 in the initial stage increases from (4.85 ± 0.35) × 10–10 to (2.08 ± 0.03) × 10–9 with decreasing RH from 77.4% to 0% during the heterogeneous reaction of C3H6/O3/NH3 on α-Fe2O3 particles under constant RH conditions. The inhibiting effect under high RHs indicates that water molecules are unfavorable for SOA formation due to the consumption of reactant gases and the competitive effect on active sites of α-Fe2O3 particles. These results not only significantly enhance the understanding of the reaction kinetics of C3H6/O3/NH3 on the surface of α-Fe2O3 particles under different RHs but also provide theoretical insights into SOA formation mechanisms under atmospheric pollution conditions.
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高影响因子
危险品化学品经营许可证（带存储）