COMPOSITE INTERFACES
·
2019
·
IF 2.025
Guoliang Zhang,Jie Chen,Yahui Meng,Shihua Wang,Zhu Long
Functionalized modified SiO2 was prepared by a mild and simple dip coating method, and a layer of functionalized modified SiO2 coating was introduced onto the carbon fiber surfaces not only to improve the surface wettability and activity of carbon fiber, but also strengthen the interphase of the carbon fiber/polyimide composite. The successful functionalization of SiO2 by bis[3-(triethoxysilyl)propyl] tetrasulfide (TESPT) silane was confirmed. Moreover, a uniform coating with well-dispersed particles on a carbon fiber surface was achieved with a 1.0 wt% addition of TESPT-modified SiO2 (TESPT@SiO2) particles. Under this condition it was observed that the interlaminar shear strength (ILSS) and interfacial shear strength (IFSS) augmentation was 26.37% and 38.27%, respectively, in comparison with carbon fiber composite coated only with polyimide resin. The functionalized modified SiO2 coating could effectively heal the surface defects of fiber, and the fiber tensile strength increased by more than 10.61%. This study provides a scalable, simple, and cost effective method of simultaneously increasing the interfacial strength of composites.
研究领域:
材料科学
·
复合材料工程
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DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2020
·
IF 4.419
Dan Wang,Pengkun Hou,Dietmar Stephan,Shifeng Huang,Lina Zhang,Ping Yang,Xin Cheng
For surface functionalization of cement-based materials with photocatalytic properties, weak adhesion between photocatalysis and matrix worsens these properties and results in poor weathering resistance in outdoor environments. To overcome these problems, in this study, two SiO 2 /TiO 2 composites, with different deposited densities of TiO 2 nanoparticles on a SiO 2 sphere, were prepared and used for surface coating of cement-based materials. The two composites show different efficiencies. The photocatalytic results show that the coated cement pastes exhibited excellent rhodamine B-removal efficiency before and after curing and accelerated weathering processes, indicating that SiO 2 in the system has a crucial effect as a ‘glue’ preventing the release of TiO 2 . The bonding mechanism was revealed by the reaction of the samples and main components and hydration products (such as CH, C-S-H and C 3 S).
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Tingting Yan,Junyang Liu,Jie Li,Senlin Deng,Gang Wang,Zhenyong Miao,Chunshan Li
The Cs-Zr/SiO 2 exhibits excellent catalytic performance on the aldol condensation of methyl propionate with formaldehyde to methyl methacrylate (MMA), however, the catalyst deactivation caused by coking still remains challenging. In this work, the coke deposition induced deactivation behavior of Cs-Zr/SiO 2 samples prepared by ion-exchange and impregnation methods were systematically investigated using NMR, Raman spectroscopy, physical N 2 adsorption–desorption, HR-TEM and TG analysis. The results show that the catalyst prepared by the ion-exchange strategy mainly forms removable amorphous carbon of aliphatic species and polycyclic aromatic hydrocarbons, whereas the impregnated sample tends to evolve from similar sources into carbonaceous compounds with higher graphitization degree and structural stability. Further analysis of the deactivation mechanism indicates that different amounts and types of coke deposited on the catalyst surface induce pore blockage, ultimately leading to catalyst deactivation. MMA is verified as the primary source of coke formation, with proposal of detailed pathway, through comparative experiments using different feed streams. Furthermore, a kinetic model for carbon deposition on the catalyst prepared by ion-exchange method was established by modification of classical Voorhies equation with feed component, and the apparent activation energy for coke formation is determined as 79.4 kJ/mol.
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Xue-Qing Zhan,Jia-Min Xu,Xiaoge Wang,Xiaohui Li,Jing Ju,Qin Ye,Yi-Jie Zhang,Fang-Chang Tsai,Ning Ma
Conventional ceramics often require energy-intensive, high-temperature processing, which constrains their sustainability. Herein, we report an ionic melt-induced liquid-phase-assisted process to synthesize ZrO2–Y2O3–SiO2–Li2O glass-ceramics, reducing typical processing temperatures by ∼400 °C without cold isostatic pressing. By leveraging ZrO2–Y2O3 as the primary network former and SiO2–Li2O as an ionic flux, we achieve tailored glass transition (Tg = 866 °C) and crystallization (Tc = 1066 °C) temperatures. This enables low-temperature crystallization while enhancing the ionic conductivity. Phase analysis confirms coexisting tetragonal and monoclinic ZrO2, Li2SiO3, and residual SiO2–Li2O glass, with minimal nonbridging oxygen content contributing to optimized mechanical properties. The optimal composition (ZrO2–Y2O3:SiO2–Li2O = 1:1.14, molar ratio) delivers exceptional Vickers hardness (8.25 GPa), Young’s modulus (109.2 GPa), and ionic conductivity. This work outlines a sustainable pathway for the development of advanced glass-ceramics and solid electrolytes with potential implications for structural materials, functional devices, and solid-state batteries.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Weilian Sun,Yongqian Shen,Zizhou Yuan,Jingzhi Zhao,Zhenji Wen,Feng Gao,Hongwei Zhang,Rui Si,Xueyan Du,Haiyan Wang
The hydrophobic self-cleaning coatings had broad prospects in PV glass and precision instruments, but poor mechanical durability and environmental issues of fluorine-containing modifiers limited their practical use. This work developed an eco-friendly, good mechanical durability, hydrophobic self-cleaning coating. Nano-SiO2 was nonfluorinated and modified with OTES, combined with PVDF, and an OTES-SiO2/PVDF composite coating was prepared on glass via simple spraying. Results showed OTES grafted hydrophobic alkyl groups on SiO2, while PVDF enhanced coating mechanical strength by encapsulating SiO2. At OTES-SiO2 solution, PVDF volume ratio 3:7.5, the coating had optimal comprehensive performance, water contact angle (CA) up to 115.9°, pencil hardness 6H, and visible light transmittance 75%. Characterization confirmed a good self-cleaning effect, while the coating obviously reduced visible light transmittance and initial photovoltaic conversion efficiency but did not impair the core power generation performance and could significantly recover efficiency after self-cleaning. This work reveals the intrinsic mechanism of “covalent grafting-interface entanglement-micronano structure” for fluorine-free coating performance enhancement and provides a low-cost, scalable solution tailored to the extreme arid-sandy environment of northwest China. Its superior dust resistance and moderate UV stability effectively lower the maintenance demand of PV modules, showing more practical value than general-purpose hydrophobic coatings in long-term outdoor dusty environments.
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DOI
PubMed
高影响因子
MOLECULES
·
2026
·Vol. 31
·期 11
·1934
·
IF 5.1
Yuxin Ma,Mengjiao Zhang,Wenqiang Wang,Hanwen Zhang,Wenzhe Li,Xiangxiang Gu,Qiuxia Fu,Haoru Shan
Ceramic nanofiber-based materials have wide applicability in high-temperature management and protection. The transformation of conventional two-dimensional ceramic nanofibrous membranes into three-dimensional nanofiber-based bulks can effectively improve their thermal insulation performance and expand their range of applications. Herein, lamellar-structured Al2O3-SiO2nanofibrous aerogels (LASO NFAs) with varying inorganic binder contents were prepared via a sequence of processes involving face-to-face stacking, impregnation, and calcination, using flexible Al2O3-SiO2nanofibrous membranes (ASO NFMs) as building units and aluminum dihydrogen phosphate as an inorganic binder. Varying the inorganic binder content in the aerogel matrix enables effective control over the compressive properties and interlayer spacing of the resulting aerogels. Specifically, the optimized LASO-20 NFAs demonstrated relatively good compression resilience, with a plastic deformation of 22.1% after undergoing 500 compressive cycles at a compressive strain of 50%. Moreover, profiting from the high-temperature resistance of ASO NFMs and substantial air content present within nanofiber interlayers, the LASO-20 NFAs with a thickness of 20 mm could effectively insulate against surface temperatures of 1000 °C down to 224 °C. Moreover, LASO-20 NFAs exhibited a room-temperature thermal conductivity of approximately 0.043 W·m−1·K−1, illustrating a favorable high-temperature thermal insulation characteristic. Furthermore, the LASO-20 NFAs presented promising service performance in extreme environments, providing a novel perspective in the development of new types of ceramic aerogels.
✓ 已验证
DOI
PubMed
高影响因子
Advanced Electronic Materials
·
2020
·Vol. 6
·期 5
·1901133
·
IF 6.593
Ziwei Zhang,Chunhui Du,Haoxuan Jiao,Min Zhang
Flexible and stretchable electronic (FSE) transistors create various novel applications. Carbon nanotubes possess high intrinsic mobility and exceptional mechanical and optical characteristics, which lead to a great potential as channel and electrodes in FSE transistors. At the same time, gate dielectric is also required to be intrinsically flexible/stretchable and integratable. However, few high-performance solutions have been reported. By adopting polyvinyl alcohol (PVA)/SiO 2 hybrid layer as dielectric, the integration of high-performance intrinsically flexible/stretchable carbon-nanotube-based thin film transistors is proposed and realized simply by traditional photolithography-etching and low-temperature solution processes. The PVA/SiO 2 dielectric simultaneously provides a relatively high- k value, improves the carrier conduction interface, increases the carbon nanotube (CNT) density, and protects the PVA from plasma damage. Soft transistors with carbon nanotube channel and electrodes exhibit carrier mobility of 14 cm 2 V −1 s −1 within an operation voltage of 0.3 V. These transistors show a small bending radius of 3 mm, and the stretchable transistors can withstand 50% strain with no significant electrical degradation observed, when measured in situ and along different directions for more than 1000 cycles. This work provides a solution for soft transparent transistor integration, indicating promising applicability to soft circuits, displays, and wearable electronics.
研究领域:
柔性电子学
·
纳米电子学
·
材料科学
·
薄膜晶体管
·
可穿戴电子学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Jiawei Sun,Hengchang Bi,Shi Su,Haiyang Jia,Xiao Xie,Litao Sun
The development of filtration membranes with ultrahigh water flux for separation of oil-in-water emulsions by low energy consumption approach is currently an urgent demand. A novel nanocomposite membrane with superhydrophilic and underwater superoleophobic properties has been successfully prepared by one-step vacuum filtration of an aqueous graphene/SiO 2 dispersion on a microfiltration substrate. Owing to the addition of SiO 2 nanoparticles , the interlayer space of graphene oxide (GO) layers is expanded, enabling this composite membrane to separate a variety of oil-in-water emulsions with ultrahigh water flux (> 4550 L m −2 h −1 bar −1 ), a 2-order-of-magnitude improvement as compared to pure GO membrane, and also superior compared to most commercialized membranes. The proposed convenient, time-saving (< 10 min) and low cost strategy endows possibility of massive production and shed light on commercial applications of water treatment of oil-in-water wastes in industry and daily life.
研究领域:
材料科学
·
环境工程
·
膜技术
·
纳米技术
·
水处理
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Haihong Gu,Guoqing Li,Pingping Li,Hanlin Liu,Tavonga Trevor Chadyagondo,Ni Li,Jie Xiong
Electrospun polyurethane membrane with porous structure could be used for waterproof and breathable applications, however, due to polar groups in the soft segment of polyurethane, water would easily permeate the membrane. The water repellency of polyurethane membrane could be improved by grafting hydrophobic silica particles onto the membrane to construct rough surface and low energy epidermis. Polyurethane membrane was chemically modified with 4,4′-methylenebis(phenyl isocyanate) to obtain a reactive group, which was then coupled with (3-aminoproyl) triethoxysilane. Thereafter, the treated membrane was added to the preparation solution of hydrophobic silica particles. Herein, the particles constructed the rough surface of the membrane, and hexadecyltrimethoxysilane endowed the membrane with hydrophobic epidermis. The resultant membrane exhibited significant hydrophobicity with high water contact angles (WCA) and low sliding angles (SA) to different aqueous solutions. Under cyclic stretching, the modified membrane displayed durable water repellency (WCA varied between 152.7 and 154.9°, SA fluctuated between 5.0 and 6.5°) and high breathability (8.4 kg·m −2 ·d −1 ). Furthermore, the hydrophobic membrane was superoleophilic and had high permeation fluxes for various oils. It could effectively separate (98.5%) the dichloromethane-water mixture over 30 separation cycles.
研究领域:
材料科学
·
膜技术
·
表面工程
·
环境工程
·
高分子科学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Yuhan Jiang,Fang Zhao,Xiang Wu,Lingmu Zeng,Luwei Yang,Linlin Guan,Yang Ren,Xiaowei Zhou,Zhu Liu
An abnormal capacity increase stage has been observed in nanostructured SiO2 after the initial capacity drop stage. To investigate the Li+ storage kinetic mechanism for each stage, SiO2@C core–shell nanospheres with a total diameter of ∼108 to 170 nm but an adjustable C shell thickness of ∼4 to 31 nm have been fabricated. First, the existence form and specific content of SiO2 nanoparticles with a size of ∼6–10 nm, which are embedded in the outer C shell of SiO2@C core–shell nanospheres, were confirmed by SEM, TEM, BET, and TGA, respectively. It was found that the initial stage for capacity drop happens at 15–43 cycles and is followed by an enhancement stage, which presents an increase of ∼120 to 180% in capacity relative to the lowest capacity value during cycling. Among them, the sample of P-1 with a diameter of 109 nm for the SiO2 core and thickness of 31 nm for the C shell delivers the highest specific capacity of 1060 mAh/g at 100 mA/g and a capacity increase rate of ∼180% through 300 cycles. XPS analysis for the delithiation process indicates that the capacity drop and increase stage involves the partial oxidation of Li silicate, which is correlated to the formation of Li2Si2O5. Our study can be used to explain the mechanism of the abnormal capacity increase phenomenon for the SiO2 anode and provide a high-capacity anode material for LIB application.
研究领域:
材料科学
·
电化学
·
储能技术
·
纳米材料
·
电池技术
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 6
·413
·
IF 3.2
Wang Yating,Pan Yunchen,Wu Jiajun,Tong Jianxi,Zhang Qilong
A series of novel glass–ceramic/ceramic composites, composed of a low softening ZnO–B 2 O 3 –SiO 2 (ZBS) glass–ceramic and SiO 2 /ZrO 2 ceramics, were fabricated for low temperature co-fired ceramic (LTCC) applications. The effects of the ZrO 2 /SiO 2 mass ratio on sintering behavior, microstructure, crystallization behavior and resultant properties of the ZBS/SiO 2 /ZrO 2 (ZSZ) composites were systematically investigated. The results indicate that the major crystalline phase Zn 2 SiO 4 remained stable with increasing ZrO 2 /SiO 2 mass ratio, while a minor ZrSiO 4 phase precipitated. Variations in the Zn 2 SiO 4 /ZrSiO 4 phase content resulted in an increase in the coefficient of thermal expansion (CTE) value from 2.75 × 10 –6 /K to 3.81 × 10 –6 /K, alongside a rise in flexural strength from 120.8 MPa to 152.3 MPa. The optimal properties were achieved in the ZSZ composite with a ZrO 2 /SiO 2 mass ratio = 4:5, sintered at 900 °C for 30 min: \({\varepsilon }_{r}\) = 5.52, tan δ = 6.92 × 10 –4 , CTE = 3.81 × 10 –6 /K, flexural strength (152.3 MPa) and excellent compatibility with Ag electrodes.
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Xiguang Zhang,Huaiyuan Wang,Zhanjian Liu,Yixing Zhu,Shiqi Wu,Chijia Wang,Yanji Zhu
A durable fluorine-free polyethersulfone (PES) superhydrophobic composite coating with excellent wear-resistant and anti-corrosion properties has been successfully fabricated by combining sol-gel and spray technology. The robust micro/nano-structures of the prepared surface were established by introducing binary montmorillonite-silica (MMT-SiO 2 ) assembled composite particles, which were formed by in-situ growth of SiO 2 on MMT surfaces via sol-gel. Combined with the low surface energy of amino silicon oil (APDMS), the fluorine-free superhydrophoic PES coating was obtained with high water contact angle 156.1 ± 1.1° and low sliding angle 4.8 ± 0.7°. The anti-wear of the final PES/APDMS/MMT-SiO 2 superhydrophobic coating can reach up to 60,100 cycles, which is outdistancing the pure PES coating (6800 cycles) and the PES/MMT/SiO 2 coating prepared by simple physical mixture (18,200 cycles). The enhanced wear resistance property can be mainly attributed to the lubrication performance of APDMS and stable interface bonding force between the MMT surface and SiO 2 . Simultaneously, potentiodynamic polarization curves and electrochemical impedance spectroscopy exhibited the outstanding anti-corrosion property of PES/APDMS/MMT-SiO 2 composite coating, with low corrosion current (1.6 × 10 −10 A/cm 2 ) and high protection efficiency (99.999%) even after 30 d immersion process. These test results show that this durable superhydrophobic PES composite coating can be hopefully to provide the possibility of industrial application.
研究领域:
材料科学
·
表面工程
·
防腐保护
·
纳米复合材料
·
涂层技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）