JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Sen Peng,Lei Xiao,Yingxiang Li,Lianwen Deng,Jiahui Zhu,Zhenjun Qing,Yecheng Xi
A novel Ba 3 (ZnB 5 O 10 )PO 4 (BZBPO) phosphate ceramic was synthesised using a conventional solid-state technology. The BZBPO ceramic sintered at 850 °C demonstrated exceptional microwave dielectric properties : ε r = 5.88 ± 0.08, Q×f = 52,896 ± 1200 GHz ( f 0 = 16.5 GHz) and τ f = 0.34 ± 0.25 ppm/°C. Raman spectroscopy revealed that ε r and Q×f were negatively correlated with the Raman shift and full width at half maximum of the BZBPO ceramic, respectively. Meanwhile, Phillips–Vechten–Levine theory revealed that Q×f was highly correlated with the lattice energy ( U b ), and τ f was closely related to the bond energy ( E b ) and the thermal expansion coefficient. Among contribution ratios of individual chemical bonds, the B–O bond mainly contributed to U b , E b and ionicity, proving that the bond dominantly affected the dielectric properties of the BZBPO ceramic. Finally, the BZBPO ceramic was co-fired with silver, demonstrating its potential applicability towards low temperature co-fired ceramic technology.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
Small
·
2024
·
IF 13
Zhisong Geng,Yingqi Sun,Qing Zhang,Shao-Peng Shen,Liang Zhang,Jin-Chi Zheng,Yuan Luo,Yongzheng Shi,Zhe Chen
In response to the critical challenges of interfacial impedance and volumetric changes in Li (1+x) Al x Ti (2‑x) (PO 4 ) 3 (LATP)-based lithium metal batteries, an elastomeric lithium-conducting interlayer fabricates from fluorinated hydrogenated nitrile butadiene rubber (F-HNBR) matrix is introduced herein. Owing to the vulcanization, vapor-phase fluorination, and plasticization processes, the lithium-conducting interlayer exhibits a high elasticity of 423%, exceptional fatigue resistance (10 000 compression cycles), superior ionic conductivity of 6.3 × 10 −4 S cm −1 , and favorable lithiophilicity, rendering it an ideal buffer layer. By integrating the F-HNBR interlayer, the LATP-based lithium symmetric cells demonstrate an extended cycle life of up to 1600 h at 0.1 mA cm −2 and can also endure deep charge/discharge cycles (0.5 mAh cm −2 ) for the same duration. Furthermore, the corresponding lithium metal full cells achieve 500 cycles at 0.5 C with 98.3% capacity retention and enable a high-mass-loading cathode of 11.1 mg cm −2 to operate at room temperature.
研究领域:
材料科学
·
电化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Lianlong Zhan,Wei Lu,Qin Xiang,Zhiping Chen,Wenlu Luo,Cailin Xu,Renting Huang,Shuagnfei Wang,Hui He
Using biomass for the production of low-energy regenerative carbon capture materials represents an effective strategy to advance carbon dioxide capture and storage technologies. In this study, a low-energy regenerative bagasse-based CO 2 capture material is synthesized through a one-step, rapid crosslinking strategy. In this method, epichlorohydrin is used to crosslink bagasse with temperature sensitive Pluronic® F-127 and polyethyleneimine, thereby addressing the challenge of simultaneously incorporating multiple functional groups into the biomass matrix. The resulting material with abundant amino adsorption sites demonstrates a high adsorption capacity of 4.52 mmol/g. Interestingly, the temperature-sensitive response of the material facilitates the grafted amine chain segments on bagasse to stretch and shrink reversibly within a narrow temperature range of 25 °C for adsorption and 55 °C for desorption. The shrinkage state is conducive to the CO 2 desorption process, resulting in an ultralow regeneration temperature of 55 °C. Additionally, the water contained in the material enhances its cyclic stability in extreme environments, such as pure CO 2 atmosphere at high temperature. Overall, this research not only provides new ideas for enhancing the long-term stability and economic viability of CO 2 capture materials but also offers feasible solutions for combating climate change and promoting sustainable development.
研究领域:
材料科学
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环境科学
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生物质工程
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DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Pengtao Cai,Tong Chen,Mingxiu Zhan,Xiaojun Ma,Masaki Takaoka,Chen Sun,Xiaodong Li
Per- and polyfluoroalkyl substances (PFAS) are known for their strong C-F bonds, which make them highly persistent in the environment and resistant to degradation. Among PFAS, perfluorobutane sulfonate (PFBS), a short-chain PFSA widely used as a replacement for long-chain PFAS like perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), has garnered attention due to its environmental persistence and toxicity. Although PFBS has lower bioaccumulation potential than its long-chain counterparts, it remains a significant pollutant with limited data available on its degradation mechanisms. To address this, the present study investigates PFBS degradation under subcritical water hydrothermal conditions. Various alkaline substances and additives were tested, and degradation products were analyzed by liquid and gas chromatography-mass spectrometry. Results show that 2 M NaOH at 325°C achieved an ∼99.4 % PFBS removal rate, and the degradation pathway began with the breakdown of the S-C bond, followed by C-F bond cleavage, resulting in the formation of smaller fluorinated compounds, including trifluoroacetic acid. Density functional theory (DFT) calculations provided detailed insights into the degradation mechanism, identifying hydroxide ion attack on the sulfonic acid group as the initial step and elucidating three distinct pathways for subsequent reactions. This study provides key insights into PFBS degradation mechanisms, emphasizing the synergistic effect of alkaline bases and additives. The findings support the optimization of subcritical hydrothermal treatment for PFAS removal, providing a scalable and environmentally sustainable solution.
研究领域:
环境科学
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化学工程
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理论计算
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DOI
PubMed
高影响因子
Ceramics-Switzerland
·
2024
·Vol. 7
·期 1
·426-435
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IF 2.7
Yuan-Bin Chen,Yu Fan,Shiuan-Ho Chang,Shaobing Shen
In this study, we used solid-state synthesis to prepare Ba[(ZnxCo1−x)1/3(Nb0.5Ta0.5)2/3]O3microwave ceramics for mobile communications. Compared with Ba[Zn1/3(Nb0.5Ta0.5)2/3]O3, in the prepared materials, Co2+substitution with Zn2+improved the Q × f value and enabled densification and sintering at a lower temperature. We used X-ray diffraction (XRD) and scanning electron microscopy (SEM) to analyze the obtained microstructure. Ba[(ZnxCo1−x)1/3(Nb0.5Ta0.5)2/3]O3was found to have a 1:2 ordered hexagonal structure, and its Q × f value increased with the increase in sintering temperature. In this work, excellent microwave dielectric properties—τf= −0.7 ppm/°C, εr= 34.5, and Q × f = 110,000 GHz—were obtained by sintering Ba[(Zn0.3Co0.7)1/3(Nb0.5Ta0.5)2/3]O3at 1400 °C for 5 h.
研究领域:
材料科学
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电子工程
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DOI
高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Jie Zhang,Chao Wei,Tongkang Sun,Xiaoping Wang,Jingyu Ran,Zuotai Zhang,Wenbo Li
Gypsum is an environmentally friendly, healthy, and low-cost building material. However, its poor water resistance significantly limits its application in the construction field. In this study, octa(heptadecafluorodecyl) polyhedral oligomeric silsesquioxane (F-POSS) is synthesized as a hydrophobic agent and applied to gypsum-based flat panels via a simple brush-coating process to construct a hydrophobic coating. The microstructure, water contact angle, and abrasion resistance of the resulting hydrophobic coating on gypsum substrates are systematically characterized. The results show that, compared with the unmodified gypsum board (CA = 85.27°), the hydrophobicity of the gypsum substrate is significantly improved after surface modification, with the contact angle increasing to 135.8°. Notably, after abrasion testing, the hydrophobicity does not deteriorate but instead increases by 7.2%, reaching a contact angle of 145.67°. To further elucidate the underlying mechanism, 3D surface profilometry is employed to characterize the surface roughness and topographical complexity of the gypsum boards before and after hydrophobic modification. These results demonstrate that the prepared hydrophobic material exhibits promising application potential for enhancing the water resistance of gypsum-based materials.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2016
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IF 3.014
Fayu Wu,Xinru Tong,Zhuo Zhao,Jianbo Gao,Yanwen Zhou,Peter Kelly
The morphology and properties of the transparent SnO 2 :F (FTO) films, deposited by RF magnetron sputtering at varying oxygen flows from 0∼3sccm, were examined. For FTO films deposited with 0∼1sccm O 2 , the polar unsaturated (101) planes were the preferred orientation, resulting in resistivity values as low as 10 −3 Ω cm, and the transparency of 86.5% in the visible range. The saturated (110) orientation planes associated with {101} facets formed knee twin crystallites for the FTO film prepared at 2sccm O 2 . Further increases of O 2 led to severe mis-orientation of the crystals. The average transparency in the visible range increased up to 95%, but these FTO films were hardly conductive due to the oversupply of O 2 . The optical band gaps became wide at first and then narrow again as the increases of the oxygen flow rates.
研究领域:
材料科学
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薄膜技术
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光电子学
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DOI
高影响因子
Catalysts
·
2022
·Vol. 12
·期 8
·809
·
IF 4.501
Yukai Zhao,Weichi Liang,Yihan Wang,Yan Tong,Zhanhong Li,Yuqian Liang,Xiaolong Liu,Jiuxing Jiang
As a solid acid, zeolite has been widely used in many fields such as tail gas treatment, petrochemical engineering, and the fine chemical industry. F−has been widely used in the synthesis of pure silica or high silica zeolites. To balance the charge of organic structure directing agents (OSDA), F−is often found located at the center of the double-4-rings (d4r) of the as-made zeolites. During calcination, fluorine ion is removed with the OSDA. We screened a series of composition building units and found thatd4ris capable to retain F−in zeolite structure. We introduce the F−back after the calcination to create an unprecedented type of acid site, i.e., F−@d4rin pure silica zeolites ITQ-12. The F−@d4rspecies is thermal stable up to 300 °C. ITQ-12 with F−@d4rshows substantial catalytic activity in Biginelli reaction. Furthermore, the catalytic performance is proved to be positive correlated with the presence of F−@d4r, indicating the mild acid catalytic property of F−@d4r.Keywords:zeolites;fluorine;double-4-rings
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2021
·
IF 5.455
Sisi Su,Lanlan Lin,Haiyang Li,Xinyu Wen,Rui Yan,Caihong Tao
Photothermal material was one of the hot topics in nanomedicine in recent years, which had aroused widespread attention of scholars. In this paper, a kind of core-shell drug nanocarriers with good photothermal properties were prepared, and its photothermal therapeutic effect on tumor cells in vitro was studied. First, fluorescein isothiocyanate (FITC) was encapsulated in silica nanoparticles to form silica fluorescent (F-SiO 2 ) nanoparticles. Then mesoporous dopamine (MPDA) layer were built on the F-SiO 2 nanoparticles, the core-shell nanoparticles (F-SiO 2 @MPDA) with mesoporous shell structure were obtained. Finally, Au nanoparticles (AuNPs) were wrapped on the surface of the layer of MPDA shell by the citrate reduction method, and the F-SiO 2 @MPDA-AuNPs composite nanoparticles were formed. Then, the fluorescence property, adsorption performance, sustained release property, photothermal property and cytotoxicity of the F-SiO 2 @MPDA-AuNPs nanoparticles were researched. It was found that F-SiO 2 @MPDA-AuNPs nanoparticles had good fluorescence performance, high adsorption capacity (DOX, 111.275 mg/g) and pH responsive release performance. When pH = 5.2, the DOX release rate was 39.5% within 7 h under the action of near-infrared light (NIR). In addition, it also had a high photothermal conversion rate (36.95%), and the DOX loaded F-SiO 2 @MPDA-AuNPs nanoparticles had obvious inhibitory effect on tumor cells in vitro. As a kind of mesoporous drug nanocarriers with photothermal properties, it has potential application value.
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高影响因子
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2023
·Vol. 120
·期 52
·e2312480120
·
IF 11.1
Yingkang Chen,Wenqiang Qu,Tao Luo,Hang Zhang,Junwei Fu,Hongmei Li,Changxu Liu,Dengsong Zhang,Min Liu
Tetrafluoromethane (CF4), the simplest perfluorocarbons, is a permanently potent greenhouse gas due to its powerful infrared radiation adsorption capacity. The highly symmetric and robust C–F bond structure makes its activation a great challenge. Herein, we presented an innovated approach that efficiently activates C–F bond utilizing protonated sulfate (–HSO4) modified Al2O3@ZrO2 (S-Al2O3@ZrO2) catalyst, resulting in highly efficient CF4 decomposition. By combining in situ infrared spectroscopy tests and density function theory simulations, we demonstrate that the introduced –HSO4 proton donor has a stronger interaction on the C–F bond than the hydroxyl (–OH) proton donor, which can effectively stretch the C–F bond for its activation. Consequently, the obtained S-Al2O3@ZrO2 catalyst achieved a stable 100% CF4 decomposition at a record low temperature of 580 °C with a turnover frequency value of ~8.3 times higher than the Al2O3@ZrO2 catalyst without –HSO4 modification, outperforming the previously reported results. This work paves a new way for achieving efficient C–F bond activation to decompose CF4 at a low temperature.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Liqing Zhang,Bo Li,Yonggang Wei,Haoyuan Xu
Environmental problems caused by Cr(VI) need to be solved urgently. As a green and safe adsorbent, magnesium oxide has the characteristics of strong adsorption capacity and safety, non-toxic and harmless. In this study, high-performance Cr(VI) adsorption material (F-MgO) was prepared by combination hydrothermal modification of recycling MgO and doping of solid waste fly ash with the MgO that was a by-product of high magnesium laterite nickel ore. The adsorption properties of F MgO composites for Cr(VI) were evaluated, and the maximum adsorption capacity of Cr(VI) by F MgO reaches 172.6 mg/g at pH = 2.0. The F-MgO also showed high stability and excellent cycle adsorption performance. The adsorption mechanism was extensively studied by adsorption kinetics and DFT theoretical calculation, and electrostatic adsorption and chemical interaction between Cr(VI) and F MgO active sites were demonstrated. The prepared F MgO composites from waste resources with a simple synthetic method have great potential in the treatment of chrome-containing wastewater to achieve the purpose of treating waste with waste.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jianbo Li,Guijie Yin,Yannan Wang,Yang Xiang,Ning Yu,Xu Li,Yinzhu Jiang,Maowen Xu,Xuan Zhang
To meet high-standard requirements for next generation lithium-ion batteries (LIBs), reinforce the functions of separator are becoming imperative and urgent. In this work, we successfully fabricated a multifunctional separator, namely, UIO-66-F@PP, which enabled the test battery to achieve a significant improvement in electrochemical performance and safety. The modified separator UIO-66-F@PP can finely regulate the ion transfer by facilitating the Li + transport due to the orderly porous structure and the negatively charged functional group (−F), resulting in a higher ion conductivity ( σ ) of 0.91 mS cm −1 and a larger Li + transference number ( t Li + ) of 0.78. By analyzing the Sand’s time ( t sand ), it was found that the lithium dendrite was suppressed by the modified separator UIO-66-F@PP. Besides, the symmetric battery Li//Li assembled with UIO-66-F@PP exhibited a stable lithium plating/stripping cycle over 2000 h. The battery of LFP//Li with UIO-66-F@PP demonstrated an excellent rate performance with a discharging specific capacity of 114 mAh g −1 at 10C. Moreover, the burning and heat shrinkage tests showed that the modified separator UIO-66-F@PP has a self-extinguishing character and a high thermal stability even at 190 °C, indicating that the modified separator has the capability to endow the LIBs with high safety.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）