APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Yan Zhao,Yang Gao
The microstructure of plasma-sprayed nanostructured yttria-stabilized zirconia (YSZ) coatings may change during high-temperature exposure, which would influence the coating performance and service lifetime. In this study, the phase structure and the microstructural evolution of 3YSZ (zirconia-3 mol% yttria) and 5YSZ (zirconia-5 mol% yttria) nanostructured coatings were investigated by means of sintering at 1400 °C for 50–100 h. The microhardness, elastic moduli, and thermal shock cycles of the 3YSZ and 5YSZ nanostructured coatings were also investigated. The results showed that the redistribution of yttrium ions at 1400 °C caused the continuous increase of monoclinic-phase zirconia, but no obvious inter-splat cracking formed at the cross-sections, even after 100 h. Large voids appeared around the nanoporous zone because of the sintering of nanoscale granules upon high-temperature exposure. The microhardness and elastic moduli of the nanostructured coatings first increased and then decreased with increasing sintering times. The growth rate of the nanograins in the 3YSZ coating was lower than that in 5YSZ, which slowed the changes in 3YSZ coating porosity during sintering. Although the 3YSZ coating was prone to monoclinic phase transition, the experimental results showed that the thermal shock resistance of the 3YSZ coating was better than that of the 5YSZ coating.
研究领域:
材料科学
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表面工程
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陶瓷涂层
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热障涂层
·
高温材料
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2019
·
IF 4.561
Qi Liu,Xiaoxiao Chen,Yan Guo,Chuanhong Han,Jing Li,Lihan Jia,Jie Liu,Xilian Wei
A ternary phase diagram of the system of 1-butyl-3-methylimidazolium tetrafluoroborate ([ Bmim ]BF4), sodium dodecylbenzenesulfonate (SDBS) and water using ocular estimate and turbidity method was drawn based on experimental data at 298.2 K. We got a narrow aqueous two-phase region near the side of water-ionic liquid (IL). A series of samples with different compositions around the phase diagram were chosen. The enthalpy change of these systems after injecting triply distilled water into these samples has been studied by using isothermal titration microcalorimetry (ITC). It is found that with increasing the water content there are weak endothermic and exothermic processes appearing, separately, which matches perfectly with the location of the formation and disappearance of the aqueous two-phase in the ternary phase diagram. This suggests the ITC is a feasible and effective method for the thermodynamic study of aqueous two-phase systems (ATPS) and was first reported. The experimental results show that the formation of the ATPS is endothermic (Δ H > 0), but the process of disappearing is exothermic (Δ H < 0). Due to the formation of aqueous two-phase is a thermodynamic spontaneous process under the isothermal constant pressure, we can judge that the formation of this ATPS is an entropy driven course and the vanishing is a synergy driven process by entropy and enthalpy.
研究领域:
物理化学
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热力学
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胶体与界面化学
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分离科学
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分析化学
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DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 11
·期 3
·2202195
·
IF 10.05
Xiaojing Li,Zilong Chen,Fuming Li,Fangfang Zhang,Zhihua Yang,Shilie Pan
A long-lasting challenge in ultraviolet (UV) nonlinear optical (NLO) materials design is to combine conflicting and harsh properties into one structure, including wide UV transparency, strong NLO efficiency, and moderate birefringence to realize phase-matching at short wavelength. A fluorine-directed material design strategy is adopted to accelerate the process of finding NLO materials with optimal performances. In this work, taking LiB 3 O 5 (LBO) as a maternal structure, one O atom with two F atoms is substituted and LiNaB 6 O 9 F 2 which possesses novel double interpenetrating 3 [B 6 O 9 F 2 ] ∞ networks and fluorine-directed optimal performances including enhanced birefringence and phase-matching capacity is successfully obtained. The perfect balance among deep-UV cutoff edge, large second-harmonic generation (SHG) response (1.1 × KDP), and moderate birefringence (0.067 at 1064 nm) of LiNaB 6 O 9 F 2 makes it a promising UV NLO crystal.
研究领域:
材料科学
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晶体化学
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非线性光学
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功能材料
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固体化学
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DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Zhiping Zhang,Yuenan Wang,Yang Lei,Fang Zhang,Xiaobing Chen,Hongfei Liu
Negative thermally expanded (NTE) (KMg) x Sc 2-x (WO 4 ) 3 (0 = x ≤ 1.5) ceramics have been prepared via solid-state reaction. X-ray diffraction (XRD) analysis reveals that (KMg) x Sc 2-x (WO 4 ) 3 undergoes a composition-induced phase transition as the (KMg) 3+ -substitution content increases. For x = 0.25, both hexagonal (KMg) x Sc 2-x (WO 4 ) 3 and orthorhombic Sc 2 (WO 4 ) 3 coexisted in the sample. For 0.25 < x ≤ 1, a single-phase, hexagonal (KMg) x Sc 2-x (WO 4 ) 3 , was obtained. When x is further increased to 1.25, monoclinic MgWO 4 impurity was detected in the sample. Meanwhile, as x increases, the grain size of (KMg) x Sc 2-x (WO 4 ) 3 ceramics grows up. Hexagonal (KMg) x Sc 2-x (WO 4 ) 3 ceramics show high densification and strong NTE property. Thermomechanical analysis indicates that the linear coefficients of thermal expansion (CTEs) of hexagonal (KMg) x Sc 2-x (WO 4 ) 3 ceramics decrease from −7.48 × 10 −6 °C −1 to −14.06 × 10 −6 °C −1 with the increase of x. High-temperature XRD analysis reveals that hexagonal (KMg) 0.5 Sc 1.5 (WO 4 ) 3 show an anisotropic NTE. The intrinsic linear CTEs are α a = α b = −6.74 × 10 −6 °C −1 , α c = 11.03 × 10 −6 °C −1 and the volumetric CTE is α v = −2.52 × 10 −6 °C −1 .
研究领域:
材料科学
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无机非金属材料
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功能陶瓷
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热学性能
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结构与物性
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2015
·Vol. 26
·期 8
·953-959
·
IF 1.757
Shuting Wang,Lan Cen,Qihao Wu
Maleated glycidyl 3-pentadecenyl phenyl ether with styrene (MGS) was synthesized from glycidyl 3-pentadecenyl phenyl ether (GPPE), maleic anhydride (MAH) and styrene (St) in the presence of AIBN initiator at 80°C, and then the resultant MGS was applied as a compatibilizer to prepare SBR/silica composites. Meanwhile, the commercial compatibilizer bis-(triethoxysilylpropyl) tetrasulfide (named Si69) added into composite was also prepared for comparison purpose. The synthetic MGS structure was characterized by GPC and FTIR, and SBR/silica compounds with different compatibilizer were analyzed using RPA, DMA and so on. The results showed that M̄n and M̄w of MGS were 19,538 g/mol and 23,790 g/mol, respectively. The curing time of compounds with MGS increased, whereas the maximum and minimum torques decreased. The addition of MGS decreased Payne effect of SBR/silica compounds, which implied an improvement of silica dispersion in the compounds. Bound rubber content of compound with MGS was about 1.7 times higher than the absence and 1.5 times higher than that with Si69. The tensile strength of the composites was improved by increasing compatibilizer loading, and the optimum value was observed at 6 phr of MGS. Meanwhile the use of MGS can improve the anti-aging property of composite. According to DMA, the tanδ value at 0°C of composite with MGS was higher than composite without compatibilizer suggesting that MGS can improve the wet skid resistance of composite. The SEM analysis revealed that introduction of MGS enhanced the compatibility between SBR and silica. Copyright © 2015 John Wiley & Sons, Ltd.
研究领域:
高分子化学
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橡胶复合材料
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材料界面科学
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功能高分子
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聚合物改性
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DOI
高影响因子
JOURNAL OF PHARMACEUTICAL SCIENCES
·
2026
·
IF 3.8
Siyuan Zhao,Chang Chu,Cuiping Li,Qiaoli Zhai,Juan Liu,Huan Sun,Xin Wu,Kourong Shi,Wei Fan
This study aimed to develop a novel peptide–drug conjugate (PDC) by conjugating 3-fluoro-10-hydroxy-evodiamine (FOE) with a bicyclic peptide (BiP) targeting the EphA2 receptor. The goal was to enhance the solubility, tumor selectivity, and therapeutic efficacy of FOE against colorectal cancer (CRC). FOE and BiP were chemically synthesized and coupled through a valine–citrulline cleavable linker to generate BiP–FOE. The compound was structurally characterized, and its solubility, plasma stability, and in vitro cytotoxicity were evaluated in CRC cells. Its effects on cell migration, invasion, apoptosis, and the cell cycle were also assessed. The in vivo targeting ability, antitumor efficacy, and safety were evaluated in an HCT116 xenograft mouse model. BiP–FOE exhibited a greater than 200-fold improvement in aqueous solubility and good metabolic stability. In vitro, BiP–FOE showed selective and potent cytotoxicity toward EphA2-positive HCT116 cells, significantly inhibiting migration and invasion while inducing S-phase arrest and apoptosis. In vivo, BiP–FOE achieved significant accumulation at the tumor site and effectively suppressed tumor growth, with efficacy comparable to or exceeding that of 5-FU. It demonstrated a favorable safety profile, showing minimal body weight loss, negligible hemolysis, and no detectable organ toxicity. BiP–FOE successfully combines the cytotoxic potential of FOE with the tumor-targeting capacity of a bicyclic peptide, resulting in improved solubility, selectivity, efficacy, and safety. These findings highlight BiP–FOE as a promising candidate for targeted CRC therapy and warrant further preclinical development.
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DOI
PubMed
高影响因子
GREEN CHEMISTRY
·
2026
·
IF 9.2
Yujie Yuan,Ziyu Yang,Hao Wang,Tong Wu,Xiaoyi Zhang,Lin Chen,Zhaohuan Wei,Rui Wang,C. Venkata Reddy,Jaesool Shim,Hui Tang
Electrocatalytic seawater splitting holds immense promise as a green hydrogen production technology; however, the anodic oxygen evolution reaction (OER) confronts formidable challenges arising from the high concentration of chloride ions (Cl -) and other impurities in seawater. Herein, we develop a facile two-step immersion corrosion strategy to successfully construct a Ni 3 S 2 @FeOOH heterojunction electrocatalyst on nickel foam (NF) tailored for industrial alkaline seawater oxidation. Integrating density functional theory (DFT) calculations and experimental characterizations, we demonstrate that Ni 3 S 2 @FeOOH selectively enriches OH -while repelling Cl -during OER in alkaline seawater electrolytes. Notably, in situ leaching of SO 4 2-from the electrode triggers efficient self-reconstruction, facilitating the generation of high-valence metal active sites. The asfabricated catalyst exhibits remarkable OER performance with a low overpotential of 390.5 mV at an ultrahigh current density of 1000 mA cm -2 in alkaline seawater. Moreover, it maintains exceptional electrochemical stability for over 1000 hours at the industrial current density of 1000 mA cm -2 . This work provides a scalable strategy for constructing self-reconstructing electrocatalysts that promote highvalence metal site formation and efficient Cl -repulsion in alkaline seawater oxidation.
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产品关联
DOI
高影响因子
CNS Neuroscience & Therapeutics
·
2026
·Vol. 32
·期 8
·e71094
·
IF 6.6
Xiao‐Ting Zhou,Qin Liu,Ming Chen,Ruo‐Xi Zhang,Yi‐Ling Su,Ding‐Feng Su,Ai‐Jun Liu
Proposed mechanism underlying NBP protection against ischemic stroke. NBP exerts neuroprotection against cerebral ischemic injury partially via upregulating the VMAT‐DAT‐dopamine cycle to improve synaptic dysfunction. Activation of D 1 R and adenosine A 1 Rs participates in the relevant downstream signalling cascades.
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2026
·
IF 18.1
Zhu Shien,Yang Xiaofei,He Di,Zhang Yanyan,Liu Hang,Zhou Xiaoyu,Su Dawei,Wang Guoxiu,Wang Tianyi,Wang Chengyin
Coral reefs, vital marine ecosystems, are increasingly threatened by global warming and chemical pollutants such as benzophenone-3 (BP-3), a widely used UV filter. To address this challenge, we present a carbon-doped graphitic carbon nitride (g-C 3 N 4 ) photocatalyst with efficient singlet oxygen ( 1 O 2 ) generation for BP-3 degradation and coral vitality restoration under simulated seawater conditions. The photocatalyst exhibits improved stability and photocatalytic performance in complex seawater environments, with enhanced charge separation and an approximately eightfold increase in the apparent degradation rate of BP-3 compared with pristine g-C 3 N 4 . Toxicity assessments indicate reduced ecological risks of degradation intermediates and significant recovery of zooxanthellae density and coral–algal symbiosis. Immobilized catalyst architectures further minimize material loss and provide a suitable substrate for coral attachment. In this work, we demonstrate a seawater-stable, 1 O 2 -driven photocatalytic strategy that enables efficient BP-3 removal and promotes coral vitality recovery, thereby offering a scalable approach for marine environmental remediation and coral ecosystem restoration.
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产品关联
DOI
高影响因子
POSTHARVEST BIOLOGY AND TECHNOLOGY
·
2026
·
IF 7.3
Lirong Yu,Tongtong Cui,Pengdong Xie,Botao Bai,Ruirui Yang,Ye Han,Yi Wang,Xin Li,Yang Bi,Dov Prusky
IAA increased endogenous auxin levels during tuber wound healing. • Auxin signaling genes were upregulated by IAA treatment. • IAA activated phenylpropanoid pathway genes and enzymes. • Formation of protective barrier was enhanced under IAA treatment. • IAA reduced weight loss and disease index in wounded tubers. Indole-3-acetic acid (IAA) is a major endogenous auxin, yet its involvement in closing layer formation at potato tuber wounds is not well defined. In this study, potato tubers (cv. Atlantic) were treated with IAA (100 mg L⁻¹) or N-1-naphthylphthalamic acid (NPA) (100 mg L⁻¹) and stored for up to 21 d during wound-healing, with samples collected at multiple time points. Transcriptome analysis showed that differentially expressed genes were mainly enriched in plant hormone signal transduction and phenylpropanoid biosynthesis pathways. IAA treatment significantly increased endogenous IAA accumulation and upregulated auxin biosynthesis and signaling genes, including StTAR2 and StYUCCA50 , as well as downstream signaling components such as StIAA29 , StARF8 , StGH3.6 , and StSAUR50 . Transcriptome and biochemical analyses showed that IAA enhanced phenylpropanoid metabolism, as evidenced by increased expression and activities of key enzymes, including phenylalanine ammonia-lyase (PAL), cinnamate 4-hydroxylase (C4H), 4-coumarate-CoA ligase (4CL), and cinnamyl alcohol dehydrogenase (CAD). Correspondingly, IAA promoted the accumulation of phenolic acids (cinnamic acid, caffeic acid, ferulic acid, and p -coumaric acid), lignin monomers, and total lignin, along with enhanced deposition of suberin polyphenolics and lignified cell layers at wound sites. In contrast, NPA treatment generally suppressed auxin accumulation, phenylpropanoid metabolism, and barrier formation. These coordinated molecular and metabolic changes were associated with reduced weight loss and lower disease index during storage. Correlation analysis further indicated strong associations among auxin-related responses, phenylpropanoid metabolism, barrier deposition, and healing performance. Collectively, these findings demonstrate that auxin-associated regulation is closely linked to phenylpropanoid activation and closing layer formation during potato tuber wound healing.
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DOI
高影响因子
Small
·
2026
·
IF 11.8
Hongwei Zhang,Shan Wang,Ziqi Wen,Jingping Wang,Youlong Xu
Na 3.5 MnCr 0.5 Ti 0.5 (PO 4 ) 3 (NMCrTP) demonstrates significant development potential as a cathode material for sodium-ion batteries owing to its low cost and high discharge plateau. However, the severe potential hysteresis phenomenon caused by Mn·Na anti-site defects (Mn·Na-ASD) of Mn 2+ residing in Na vacancies is hindering its performance release. Here, a strategy is proposed to alleviate the anti-site defects in NMCrTP through doping Mo at the Ti sites using the sol–gel method. Rietveld refinement results confirm that the content of Mn·Na-ASD decreases from 6.30% in NMCrTP/C to 0.98% in NMCrTP/C-0.05Mo. Meanwhile, Hall effect measurements verify that the Mo donor induces the carrier-type transformation from p-type to n-type, enhancing electronic conductivity from 3.07 × 10 −3 to 3.61 × 10 −3 S cm −1 . Moreover, the ion diffusion coefficient measured by GITT increases from 3.96 × 10 −12 to 1.34 × 10 −11 cm 2 /s. In result, the mean discharge potential of the NMCrTP/C-0.05Mo cathode increases from 2.62 V (vs. Na + /Na) to 3.47 V, and the electrochemical polarization decreases from ΔV = 0.20 to 0.09 V. As expected, the NMCrTP/C-0.05Mo cathode delivers an excellent rate performance of 88.4 mAh g −1 at a high rate of 10 C. This work presents an effective strategy to alleviate the potential hysteresis of the NMCrTP cathode for high-rate SIBs.
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产品关联
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2026
·
IF 13.5
Shijie Zhang,Naqi Wang,Shun Wang,Li Tian,Panpan Wang,Xiaowei Liang,Airong Wang,Yupeng Shi,Zhiwei Zhao
A novel solid-solution (Ta 2/3 Ti 1/3 ) 2 CT x MXene/CuInS 2 heterostructure was constructed. • Multi-scale dielectric loss engineering was achieved through the synergisy of defects, heterointerfaces, and conductive networks. • The TTC/CS-3 composite delivered a broad EAB of 4.56 GHz at only 1.9 mm. • Interfacial charge redistribution and balanced impedance matching cooperatively enabled efficient EWs attenuation and radar stealth performance. The rational regulation of dielectric loss behavior and impedance matching remains a critical challenge for developing high-performance electromagnetic wave absorbers. Herein, a novel solid-solution (Ta 2/3 Ti 1/3 ) 2 CT x MXene/CuInS 2 (TTC/CS) heterostructure was successfully fabricated through a microwave-assisted solvothermal strategy. Benefiting from the intimate coupling between conductive MXene nanosheets and semiconductive CuInS 2 , a multi-scale dielectric loss engineering platform was established to simultaneously optimize electromagnetic attenuation capability and impedance matching characteristics. Structural analyses demonstrate the successful formation of abundant TTC/CS heterointerfaces accompanied by significant interfacial charge redistribution. The synergistic effects originating from intrinsic vacancies, surface functional groups, multi-cation configurations, and heterojunction interfaces generate abundant polarization centers and multiple dielectric relaxation processes. Meanwhile, the interconnected layered architecture promotes charge transport, conduction loss, and multiple reflections/scattering of incident electromagnetic waves. As a result, the optimized TTC/CS-3 composite exhibits superior electromagnetic wave absorption performance, delivering a broad effective absorption bandwidth (EAB) of 4.56 GHz at a thickness of only 1.9 mm. Electromagnetic parameter analysis reveals that the outstanding performance originates from the cooperative optimization of attenuation capability and impedance matching. Furthermore, radar cross-section simulations demonstrate significantly suppressed electromagnetic scattering behavior for the optimized composite. This work provides an effective strategy for constructing MXene-based heterostructures through multi-scale dielectric configuration and offers new insights into the design of lightweight, broadband, and highly efficient electromagnetic protection materials. A novel (Ta 2/3 Ti 1/3 ) 2 CT x MXene/CuInS 2 heterostructure was constructed for efficient electromagnetic wave dissipation. The synergistic integration of intrinsic defects, heterointerfaces, and interconnected conductive networks enabled multi-scale dielectric loss engineering, promoting interfacial polarization, charge transport, and multiple scattering. Download: Download high-res image (286KB) Download: Download full-size image
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高影响因子
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