Surfaces and Interfaces
·
2025
·
IF 6.3
Guojiang Ye,Lie Wen,Hui Liu,Bochen Jiang,Xiaojing Sui,Chengzhi Zhang
s The development of high-performance bifunctional coatings with integrated anti-corrosion and anti-icing properties for extreme marine environments remains challenging. Herein, we report a novel superhydrophobic composite coating based on high-entropy oxides (HEOs), which ensures synergistic protection through multiscale structural engineering. A hierarchical micro/nanostructure with the incorporated vapor-phase nano-SiO₂ phase enhances the surface roughness (Ra = 0.877 μm) and superhydrophobicity (the water contact angle of 153.8° and the sliding angle of 4.5°) while also effectively suppressing sedimentation of HEO(Ce) particles in the epoxy matrix. The Ce³⁺/Ce⁴⁺ redox cycle within HEO(Ce) endows the passivation film with dynamic self-healing capability, yielding a low-frequency impedance modulus (|Z| 0.01 Hz) of 6.52 × 10 10 Ω·cm² after 7-day immersion in 3.5 wt% NaCl solution, which is 6 orders of magnitude higher than that of pristine epoxy. Furthermore, the coating demonstrates exceptional anti-icing performance, exhibiting a delayed ice nucleation time of 1134 s at -20 °C and maintaining the surface temperature above the freezing point under -10 °C under 1 Sun irradiation. The mechanical robustness tests confirm the retained superhydrophobicity after 5-meter sandpaper abrasion and Grade 1 adhesion strength conforming to GB/T 9286–2021 standard. Therefore, this work offers a physical barrier–chemical passivation–interface modulation synergistic strategy that effectively addresses the longstanding challenge of mutual constraints between corrosion resistance and icephobicity in conventional coatings, providing an innovative solution for marine equipment protection in harsh environments.
研究领域:
材料科学
·
腐蚀工程
·
表面化学
·
防除冰技术
·
海洋涂层
✓ 已验证
产品关联
DOI
高影响因子
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
·
2026
·Vol. 40
·期 7
·e70035
·
IF 1.7
Qingqin Liu,Xiaobao Lv,Chaojun Li,Ping Xing,Lin Ling,Hao-Yang Wang
Rationale Many perfluoroalkyl and polyfluoroalkyl sulfonic/sulfinic acids and their derivatives are classified as perfluoroalkyl and polyfluoroalkyl substances (PFASs). The use of mass spectrometry techniques to analyze these compounds has attracted considerable research attention. Methods In this article, we employed high-resolution electrospray ionization tandem mass spectrometry (HR-ESI-MS/MS) and all-ion fragmentation (AIF) in negative ion mode to investigate gas-phase F-atom migration reactions of various perfluoroalkyl and polyfluoroalkyl sulfonic/sulfinic anions, particularly those yielding FSO 3 − or FSO 2 − . Results HR-ESI-MS/MS of CF 3 SO 3 − yielded an unexpected product ion FSO 3 − , representing a distinct pathway of gas-phase F-atom migration from C-atom to S-atom accompanied by the loss of CF 2 . Similarly, HR-ESI-MS/MS of CF 3 SO 2 − produced a dominant product ion FSO 2 − also via CF 2 elimination. Complementary ESI-MS/MS and AIF experiments on these anions confirmed that FSO 2 − and/or FSO 3 − are their characteristic fragmentation ions. Conclusion Theoretical calculations of gas-phase reactions CF 3 SO 3 − → FSO 3 − + CF 2 and CF 3 SO 2 − → FSO 2 − + CF 2 were performed to investigate the possible F-atom migration mechanisms. These results show that FSO 3 − at m/z 99 and/or FSO 2 − at m/z 83 could serve as diagnostic ions for structural elucidation of perfluoroalkyl and polyfluoroalkyl sulfonic/sulfinic acids and their derivatives in non-target PFASs analyses by using mass spectrometry.
✓ 已验证
DOI
PubMed
高影响因子
Green Carbon
·
2026
·
IF 14.2
Guowei Weng,Luqing Zhao,Lexian Dong,Zihua Wang,Jian Xue,Guanghu He,Haihui Wang
The development of efficient H 2 separation technology at intermediate temperatures (300~500 °C) is crucial for bridging the gap between upstream H 2 production (e.g., the water-gas shift reaction) and downstream utilization (e.g., ammonia synthesis) processes. Herein, a fluorine (F)-doping strategy is developed to enhance the proton conductivity of the BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3-δ membrane material. F incorporation into the oxygen lattice sites effectively weakens the metal–oxygen bonds and increases the concentration of oxygen vacancies, thereby improving the proton conductivity of the optimized BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3-δ F 0.1 (BZCYYbF 0.1 ) membrane. A high-efficiency F-doped electrochemical H 2 pump (EHP) with the configuration Ag-Pd|BZCYYbF 0.1 |BZCYYbF 0.1 -Ni is constructed for H 2 separation at intermediate temperatures. The constructed F-doped EHP exhibits excellent H 2 separation performance with a maximum H 2 permeation flux of 2.25 mL·min -1 ·cm -2 at a current density of 300 mA·cm -2 and near-100% Faradaic efficiency during various mixed-gas separation processes, which is much superior to that of state-of-the-art mixed protonic–electronic conducting membranes operating at 700~1000 °C. This study demonstrates the technical feasibility and high efficiency of EHPs for H 2 separation driven by electrical energy and offers an effective strategy to enhance the performance of EHPs at intermediate temperatures.
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Liang Dong,Jinghan Zhang,Qifeng Han,Yujie Feng,Shengjun Sun,Yongchao Yao,Mohamed S. Hamdy,Changliang Liu,Xuping Sun
Seawater electrolysis holds great promise for green hydrogen production, yet chloride ions in seawater can trigger competing chlorine chemistry, generating corrosive substances that degrade anodic performance. In this work, we report an amorphous F-doped NiFeP catalyst grown in situ on nickel foam (F-NiFeP/NF) for durable alkaline seawater oxidation. F-NiFeP/NF requires an overpotential of only 353 mV to achieve a current density of 1000 mA cm −2 and operates stably for 1000 h in alkaline seawater. F doping not only accelerates catalyst surface reconstruction processes but also favors the selective adsorption of OH − on the anode surface. Furthermore, an anion exchange membrane electrolyzer assembled with F-NiFeP/NF as the anode and Pt/C/NF as the cathode runs stably at 500 mA cm −2 for 450 h, demonstrating its potential for practical seawater electrolysis.
✓ 已验证
DOI
高影响因子
TOPICS IN CATALYSIS
·
2017
·Vol. 60
·期 12
·980-986
·
IF 2.486
Zhang Xiuling,Li Zhuang,Zhan Zhibin,Di Lanbo
F-Doped TiO 2 was successfully fabricated using gas–liquid cold plasma with different fluorine sources, including NaF, NaF combined with [C 4 MIM]HSO 4 , and [C 4 MIM]BF 4 . The samples were characterized by XRD (X-ray diffraction), XPS (X-ray photoelectron spectroscopy), and BET (N 2 adsorption–desorption isotherms). Photocatalytic activity of the samples was tested by degradation of methylene blue (MB) dye under simulated sunlight. The results show that doping with different fluorine sources was beneficial to form interstitial F-doped TiO 2 , and ionic liquids used in our work were most favorable to the formation of interstitial F-doped TiO 2 . Calcination of the 0.6-F–[C 4 MIM]BF 4 –TiO 2 sample at 500 °C shows that interstitial F-doped TiO 2 has an excellent thermal stability, a suitable mesoporous structure, higher specific surface area (60.5 m 2 g −1 ) and the best photocatalytic activity. MB degradation was about 98% under the stimulated sunlight for 30 min, and its apparent rate constant was 42 times higher than photolysis and was about 2.9 times as that prepared without addition of ionic liquid. Furthermore, the stability of ionic liquids in the gas–liquid plasma was also investigated and discussed with the assistance of Fourier transform infrared (FTIR) spectroscopy.
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 SOLID STATE CHEMISTRY
·
2026
·
IF 3.2
Zheng-Xuan Ni,Wei Bao,Ming-Yang Shi,Jia-Jia Zhao,Li-Zhuang Chen
H/F substitution drives the coordination reconstruction of Mn 2+ in hybrid chlorides. • Isolated [MnCl 4 ] 2- tetrahedra change to face-sharing [Mn 2 Cl 9 ] 5- units. • The four-to-six coordination change enables green-to-red emission centered at 634 nm. • The fluorinated non-centrosymmetric crystal exhibits phase-transition and piezoelectric responses. Regulation of the Mn 2+ coordination environment is an effective approach for tuning the luminescence of Mn-based hybrid halides. However, the use of H/F substitution on organic cations to regulate the coordination environment of Mn 2+ and thereby tune the emission color remains rarely explored. In this work, H/F substitution was introduced into the piperidinium cation, driving the transformation of Mn-Cl coordination units from four-coordinate to six-coordinate structures and yielding the zero-dimensional hybrid chloride (4-F-Hpip) 5 [Mn 2 Cl 9 ]. This material crystallizes in the chiral non-centrosymmetric P 4 1 2 1 2 space group and contains face-sharing dinuclear [Mn 2 Cl 9 ] 5- units with octahedrally coordinated Mn 2+ . The resulting ligand-field change gives rise to broad red emission centered at 634 nm, while the compound also exhibits a reversible phase transition. In addition, a flexible PBAT composite film containing 10 wt% (4-F-Hpip) 5 [Mn 2 Cl 9 ] generates an open-circuit voltage of approximately 4.9 V. Its luminescent and piezoelectric responses were further integrated into a conceptual dual-input information encryption scheme. This work establishes H/F substitution as an effective cation engineering strategy for regulating Mn 2+ coordination and luminescence in hybrid manganese halides. Download: Download high-res image (198KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Qiang Gao,Xiaomei Wu,Xiangsheng Ma
Series of novel energy-saving window coatings based on F–Nb–TiO 2 /SiO 2 nanocomposites with superhydrophobic self-cleaning performance were successfully prepared. Surface modification of F–Nb–TiO 2 and SiO 2 nanoparticles by aminopropyl triethoxy silane and perfluorooctyltriethoxysilane produced hydrophobic powders. With the help of the hierarchical structures of F–Nb–TiO 2 /SiO 2 nanocomposites, superhydrophobic surfaces were obtained. The water contact angle of the composite coatings reached 155.6°. The prepared superhydrophobic coatings shown superior anti-fouling property and good mechanical performance. Furthermore, the composite coating can shield most of solar radiation. The composite coating lowed the air temperature of the simulate house by 11 °C in the outdoor thermal experiments. The integration of good solar filtration and exceptional anti-fouling performance makes F–Nb–TiO 2 /SiO 2 coatings suitable candidates for energy-saving window coatings.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Haotian Liu,Liang Shi,Cheng Liu,Dainan Zhang,Kui Liu,Huaiwu Zhang
Ion substitution engineering is an effective procedure in refining the crystal structure and performance for the microwave dielectric ceramics . In this study, MgTa 2 O 6- x F 2 x ( x = 0.1, 0.2, 0.3, 0.4, 0.5, 0.6) ceramics were synthesized using the conventional solid-phase reaction method. The effects of F − substitution for O 2− in MgTa 2 O 6 matrix were systematically investigated. The correlations between the crystal structure and the microwave dielectric properties were analyzed. The solution of F − into the oxygen sites was confirmed by the XRD and Raman spectra. The introduction of F − improved the morphology as well as the stability of the crystal structure significantly, which successfully depressed the electromagnetic wave loss through the bulk and enhanced the quality factor ( Q × f ) by nearly 50%, reaching up to 179,000 GHz (7.15 GHz) in the sample of x = 0.4 at the sintering temperature of 1425 °C.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yun Zhang,Xi Jiang,Xinrui Guo,Shihua Ding,Tianxiu Song
The Mg 1- x Li x ZrTa 2 O 8- x /2 ( x = 0–0.07) ceramics were fabricated to investigate the effects of Li + heterovalent substitution for Mg 2+ . The site occupancy and existence of the Li + were examined based on Vienna Ab-initio Simulation Package (VASP) and X-ray photoelectron spectroscopy (XPS), respectively. Single phase solid solution with wolframite structure was identified in the whole region. Li + substitution reduced the densification temperature from 1475 °C to 1400 °C. Notably, the Q × f exhibited an obvious increase by up to 74 % from 41,844 GHz at x = 0–72,782 GHz at x = 0.05. The Q × f for x < 0.01 was largely dependent on the intrinsic loss originating from packing fraction, while as 0.01 ≤ x ≤ 0.05, it was dominated by extrinsic factors, especially the oxygen vacancy concentration. The corresponding dielectric constant ε r decreased in term of ionic polarizability. The variations of resonant frequency temperature coefficient τ f were explained from the views of [TaO 6 ] oxygen octahedral distortion and bond energy. A near-zero τ f was obtained for x = 0.05 composition, accompanied by ε r = 11.97, Q×f = 72,782 GH at 1450 °C. Li substitution was effective and inexpensive for MgZrTa 2 O 8 ceramic to realize dielectric properties enhancement and densification temperature optimization simultaneously.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Xukai Li,Weirui Chen,Dongpo Liu,Gaozu Liao,Jing Wang,Yiming Tang,Laisheng Li
Due to its low interfacial electron migration ability and highly hydrophilic, Fe-MCM-41 (FeM) had poor activity and stability during catalytic ozonation . To this end, the secondary metal Zn and Si-F group were introduced into the framework of FeM to create surface potential difference and hydrophobic sites. Comparative characterizations showed that there existed rich acid sites with great potential difference on F-Fe-Zn-MCM-41 (FFeZnM). Additionally, because of the existence of hydrophobic and electron-withdrawing Si-F unit, the electron migration ability, hydrophobicity and acidity of FFeZnM were enhanced. The greater O 3 mass transfer was induced by Si-F group and O 3 was directly activated at Fe and Zn Lewis acid sites into •OH, •O 2 - and 1 O 2 . With •OH acting as main species, FFeZnM/O 3 achieved the superior IBP removal (93.4%, 30 min) and TOC removal (46.6%, 120 min) over those of sole O 3 and F-FeM/O 3 processes, respectively. HCO 3 - , Cl - , NO 3 - and SO 4 2- hindered IBP degradation by FFeZnM/O 3 , but high concentration humic acid (HA) exhibited promotion by forming HA-IBP complex. IBP degradation by FFeZnM/O 3 was enhanced with tap water , river water, and effluent from the secondary sedimentation tank of the sewage plant acting as medium. This study proposed an innovative approach to catalyst design for catalytic ozonation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 34
·6018-6030
·
IF 3.756
Mingliang Qin,Yamei Wang,Huaming Zhang,Muhammad Humayun,Xuefei Xu,Yanjun Fu,Marsil K. Kadirov,Chundong Wang
Due to the serious energy and environmental issues, hydrogen generation via water splitting has been regarded as a green and promising alternative strategy to the use of fossil fuels. Developing highly efficient and non-noble metal based dual-functional electrocatalysts for overall water splitting to generate hydrogen and oxygen has become more critical. In order to fulfill the requirements of efficient hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), herein, we report novel hierarchical Co(OH)F@CoFe-LDH heterostructured nanorod arrays fabricated via a facile two-step approach. The resultant Co(OH)F@CoFe-LDH displays exceptional electrocatalytic OER and HER activity with a small overpotential of 240 mV and 130 mV at 10 mA cm−2, respectively. Further, the electrocatalyst revealed excellent long-term stability during a recyclability test for 37 h. The superior performance of Co(OH)F@CoFe-LDH can be attributed to the synergistic effect at the interface of the Co(OH)F nanorods and the covered CoFe-LDH nanosheets. Meanwhile, Co(OH)F@CoFe-LDH as a water electrolyzer to produce a current density of 10 mA cm−2 requires a small voltage of 1.58 V. This work paves the way for the design and construction of low cost and highly efficient 3D hierarchical electrodes for practical applications in electrocatalysis.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Guotai Zhang,Chunxi Hai,Yuan Zhou,Weiping Tang,Jingze Zhang,Jinbo Zeng,Yanhua Liu,Shengde Dong,Guiping Peng
A surge of interest has been attracted by Li 1.6 Mn 1.6 O 4 -type adsorbent for collecting lithium resources from salt-lake brines due to its excellent selectivity, high theorical adsorption capacity up to 72. 3 mg g −1 and low cost. However, its large-scale practical application is limited because of its bone element Mn dissolution during the cycled desorption process. Herein, F and Al co-modifying technique, an efficient method for stabilizing its spinel structure or forming protective coating, was employed to improve the application performances of Li 1.6 Mn 1.6 O 4 -type adsorbent prepared by sol–gel method. Based on the various characterization results, the co-modification not only leads to the formation of fluoride-rich coating and the substitution of Mn 3+ by Al 3+ , but also generates the active adsorbents with abundant nano-islands. DFT calculations revealed that the coating layer is indeed AlF 3 rather than LiF. In addition, in-situ high-temperature XRD tests demonstrates that the co-modification can significantly enhance the heat resistance and structural stability of the material. As-prepared adsorbent exhibits greatly improved Li adsorption capacity (increased from 28.5 to 33.7 mg g −1 ), lower Mn loss rate (decreased from 2.1 to 1.8%), enhanced cycling stability and good adsorption selectivity in the Qarhan brine containing Na + , K + , Ca 2+ , Mg 2+ , which is very significant and important for effectively removing lithium from low-grade brines.
✓ 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）