Journal of the Taiwan Institute of Chemical Engineers
·
2025
·
IF 6.3
Chen-Xiang Wang,Hao Yang,Li-Wei Liu,Ji-Peng Han,Xue-Fen Zhang
Background Superhydrophobic coatings have shown great promise in providing temporary corrosion protection for aluminum alloys. However, their long-term effectiveness is often compromised by poor mechanical durability and the lack of active protection. Methods In this study, we developed a novel protection coating by integrating a functional epoxy primer containing 8-hydroxyquinoline-loaded mesoporous SiO 2 nanocontainers (8-HQ@MSNs) and a superhydrophobic SiO 2 topcoat. Significant findings After chemical and structural characterization of 8-HQ@MSNs, its optimized content is determined to be 0.5 %. The resulting coating provides long-term protection for aluminum alloys in 3.5 wt. % NaCl solution over 30 days. Notably, the low-frequency impedance modulus of the scratched coating, even after immersion in NaCl solution for 12 h, is one order of magnitude higher than that of the coating lacking 8-HQ with a shorter corrosion duration (6 h). Furthermore, this coating exhibits a strong interfacial bond with aluminum alloys (Grade 0) and can withstand an abrasion distance of 1360 cm on 600 grit sandpaper under a 100 g load, as well as 140 min of continuous high-pressure water impact (25 kPa) without losing its superhydrophobic properties. This study is expected to contribute new insights into developing durable superhydrophobic coatings with active protection for aluminum alloys.
研究领域:
材料科学
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腐蚀与防护
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表面工程
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纳米复合材料
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高分子涂层
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2018
·
IF 3.909
Xiubin Hou,Zhixin Xue,Yanzhi Xia,Yimin Qin,Guofang Zhang,Hongwu Liu,Kechang Li
Agar/sodium alginate (AG/SA) nanocomposite films were prepared using solution casting method in presence of various concentrations of nano-SiO 2 (2.5, 5, 7.5, and 10 wt%). The effect of nano-SiO 2 concentration on the nanocomposite film was investigated. The result of Fourier transform infrared (FTIR) illustrated the formation of hydrogen bonding between nano-SiO 2 and polysaccharide . As nano-SiO 2 concentration rose from 0 to 10 wt%, the tensile strength and elongation at break all increased up to maximum, respectively. The tensile strength and elongation at break of film containing 10 wt% nano-SiO 2 increased by 65.29% and 60.38% respectively when compared to those of film prepared without nano-SiO 2 . The reason for enhancing in tensile strength might be related to the formation of molecular interaction . The film containing 2.5 wt% nano-SiO 2 had maximum water contact angle and minimum water vapor permeability among those of all films prepared in this work. However, the film containing 10 wt% nano-SiO 2 had minimum swelling degree and water solubility, further demonstrating the formation of strong interaction. The addition of nano-SiO 2 improved the properties of film against UV light and thermal stability . Overall, the addition of nano-SiO 2 enhanced the mechanical properties, water resistance and thermal stability of polysaccharide film.
研究领域:
材料科学
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食品科学
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DOI
高影响因子
Journal of Sustainable Metallurgy
·
2023
·Vol. 9
·期 3
·1303-1314
·
IF 2.4
Lv Ningning,Qiu Yuchao,Hu Yiming,Shi Hangkai,Shi Junjie,Ding Xiang,Li Haolun
It has been proved that Cr 2 O 3 is favorable to promote the crystallization of perovskite in the Selective Crystallization and Phase Separation (SCPS) process. However, the related thermodynamic data of equilibrium phase relations was quite limited. In the present work, the equilibrium phase relations of CaO-SiO 2 -TiO 2 system with the addition of 5 wt% Cr 2 O 3 were experimentally carried out using the high temperature equilibration-quenching technique followed by X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-Ray Spectroscopy (SEM–EDS), as well as thermodynamic calculation. More attention has been focused on the influence of 5 wt% Cr 2 O 3 addition on the liquid-perovskite two-phase coexisting region. The results indicated that the crystallization of perovskite was promoted by Cr 2 O 3 addition by expanding the primary phase of perovskite toward higher SiO 2 areas. Meanwhile, distinct discrepancies were found when the present experimental results were compared with the data from the literature and the isotherms calculated by FactSage, indicating that the present results are not only meaningful for the improvement of the SCPS process, but also important for the optimization of titania related oxide thermodynamic database. Graphical Abstract
研究领域:
冶金学
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材料科学
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DOI
高影响因子
Nanomedicine-Nanotechnology Biology and Medicine
·
2015
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IF 6.155
Jinrui Gan,Xiang Wei,Yixin Li,Jiao Wu,Kun Qian,Baohong Liu
We report a novel platform using optimized SiO 2 @Au core–shell structures as matrices for highly efficient laser desorption/ionization mass spectrometry analysis of small biomolecules (MW < 700 Da). Owing to the designer structure, SiO 2 @Au nanoshells can achieve low detection-of-limits (~ pmol–fmol) in mass spectrometry and selective laser desorption/ionization in bio-mixtures towards diverse small molecules. By further surface modification with aptamers , Apt-SiO 2 @Au nanoshells allowed simultaneously targeted enrichment and detection of kanamycin with a detection limit at 200 pM. Our work not only starts new applications of SiO 2 @Au nanoshells in mass spectrometry, but also contributes to advanced analysis of either a group of small molecules or one target small molecule from complex bio-samples in a pre-designed manner for bio-diagnostics. From the Clinical Editor Existing methods for the detection of small molecules are often not sensitive enough. Here, the authors developed aptamer functionalized [email protected] nanoshells for use in mass spectrometry, with very low detection limits. The new platform appeared to be simple and efficient and should be applicable in detection of clinical samples.
研究领域:
分析化学
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质谱技术
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生物传感器
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纳米技术
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临床诊断
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
·
2021
·Vol. 45
·期 11
·16551-16564
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IF 5.164
Jiuqing Liu,Meng Liu,Cheng Wang,Qihou Li,Jie Li,Ya Chen,Zikun Hong,Feifei Song,Lishun Bai,Fanli Zeng
Summary The dissolution and diffusion of intermediate product polysulfide in lithium-sulfur battery (Li-S) between electrodes pose great challenge for the further application of Li-S batteries. Herein, we first prepared nano SiO 2 blending polyetherimide (PEI) separator modified with acetylene black/polyvinylpyrrolidone (PVP) coating layer. Joint effect of acetylene black and PVP on polysulfide contribute to outstanding cycle performance. The Li-S cell with CP55 separator presents superior cycle performance (650 mAh g −1 ) than the Li-S cells with the Celgard 2320 and PEI-4 separator after 200 cycles. In addition, the SiO 2 blending PEI separator modified with acetylene black/PVP coating layer for Li-S cells shows higher ionic conductivity (2.02 mS cm −1 ), excellent compatibility with lithium and better thermal stability. This work presents a convenient and economical strategy to alleviate polysulfide dissolution and the CP55 separator is a promising candidate for the further application of Li-S batteries.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 5
·550
·
IF 2.935
Cuicui Ding,Yang Zhang,Binhan Yuan,Xiaodong Yang,Ronghui Shi,Min Zhang
Nano-SiO2was immobilized onto dialdehyde cellulose (DAC) to prepare SiO2/DAC hybrid materials. Fourier transform infrared spectra (FTIR), thermogravimetric analysis and field emission scanning electron microscopy of SiO2/DAC indicated that nano-SiO2had been successfully hybridized with DAC. X-ray diffraction suggested that the structure of DAC was influenced by the nano-SiO2. SiO2/DAC was then used as the cross-linker of collagen solutions. Gel electrophoresis patterns and FTIR reflected that cross-linking occurred between DAC and collagen, but that collagen retained the native triple-helix, respectively. Differential scanning calorimetry indicated that the thermal stability of collagen could be effectively improved by SiO2/DAC. Dynamic rheology tests revealed that the flowability of collagens cross-linked by SiO2/DAC was superior to that of those cross-linked by DAC; meanwhile, collagens cross-linked by SiO2/DAC possessed a more homogeneous morphology compared to those cross-linked by DAC. The hybridization of SiO2/DAC as a cross-linker for collagen could effectively prevent the gelation caused by excessive cross-linking, and significantly improve the thermostability of collagen, which could be helpful for collagen being applied in fields including biomaterials, cosmetics, etc.Keywords:dialdehyde cellulose;nano-silicon dioxide (nano-SiO2);collagen;hybridization;flowability;thermal stability
研究领域:
材料科学
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生物医学
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DOI
PubMed
高影响因子
APPLIED PHYSICS LETTERS
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2012
·Vol. 101
·期 1
·
IF 3.844
Zhou Yongcun,Wang Lu,Zhang Hu,Bai Yuanyuan,Niu Yujuan,Wang Hong
A kind of polymer based composites was prepared by embedding the fillers of core-shell Ag@SiO 2 nanoparticles into the polyimide (PI) matrix. The obtained Ag@SiO 2 /PI (50% vf of fillers) composites show remarkably improved high thermal conductivity and low relative permittivity. The maximum value of the thermal conductivity of composites is 7.88 W/(mK) and the relative permittivity and dielectric loss are about 11.7 and 0.015 at 1 MHz, respectively. Compared with self-passivated nanometer Al* particles composites, core-shell Ag@SiO 2 nano-composite is beneficial to increase the thermal conductivity and reduce the permittivity of the composites. The relative mechanism was studied and discussed.
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Yilin Wu,Rongxin Lin,Faguang Ma,Zhongyi Jiang
Development of membrane-based molecularly imprinted material with rapid rebinding and high-permselectivity performance has become an urgent need in chemical separation and industrial production. Herein, the high-quality membrane-based designs were proposed for the preparation of SiO 2 @polydopamine blended nanocomposite imprinted membranes with hierarchical structure. The high-efficiency antimalarial drug , artemisinin, was used as template molecule during the newly-developed sol-gel artemisinin-imprinted strategy. Importantly in this work, instead of the direct construction of imprinting layers on membranes, the artemisinin-imprinted SiO 2 @polydopamine particles were initially synthesized followed by a phase conversion process to obtain the SPIMs. The SiO 2 -based artemisinin-imprinted polymers on PDA nanospheres would played imprinted-triggered roles for achieving specific artemisinin-imprinted sites. Meanwhile, amount of artemisinin-imprinted cavities and permselectivity were both optimized, high-permselectivity coefficients (more than 11.5), fast adsorption kinetics and enhanced rebinding capacity (45.89 mg g −1 ) could be obtained. That is to say, this new direction of the membrane’s design would become the further design and guide for selective separation membrane materials.
研究领域:
材料科学
·
化学工程
·
药学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xinmei Yan,Junjie He,Ying Yang,Hao Jiang,Haipeng Zou,Zichen Zhang,Guanghao Chen,Yan Jiang,Hongwen Zhang
Oily wastewater poses significant threats to environmental ecosystems and human health, and the inherent complexity of oil–water mixtures underscores the urgent need for advanced, intelligent separation materials. In this study, we report the development of a pH-responsive sponge with reversible wettability switching, designed for efficient and adaptive oil–water separation. Acrylic acid-terminated polydimethylsiloxane (PDMS-AA) was synthesized via sodium ethoxide-initiated ring-opening polymerization of octamethylcyclotetrasiloxane (D 4 ), followed by end-capping with acrylic acid. Subsequently, a bifunctional copolymer (PDMS-AA-UA) was prepared through free-radical copolymerization of PDMS-AA and 10-undecenoic acid (UA), which was then grafted onto hydrophilic SiO 2 nanoparticles to form a micro-/nano-structured composite coating. The resulting sponge exhibits reversible, pH-driven wettability transitions. Under acidic (pH 1) and neutral (pH 7) conditions, the surface displays superhydrophobicity with a water contact angle (WCA) of approximately 160°, enabling selective oil absorption. Upon exposure to alkaline conditions (pH 14), deprotonation of carboxyl groups renders the surface hydrophilic, facilitating rapid release of absorbed oil and demonstrating controllable desorption behavior. This switchable wettability enables on-demand separation of various oil–water mixtures.
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产品关联
DOI
高影响因子
CEMENT & CONCRETE COMPOSITES
·
2026
·
IF 13.1
Mingqing Liu,Zhonghao Niu,Xiangming Zhou,Pengkun Hou,Ran Hai,Shuang Liang,Yuzhou Sun
This study investigates the synergistic effects of triethanolamine (TEA) and nano-SiO 2 (NS) on the hydration, mechanical properties and microstructure of Limestone Calcined Clay Cement (LC 3 ). Isothermal calorimetry results reveal that NS primarily enhances the hydration degree of the silicate phase, whereas TEA preferentially accelerates aluminate hydration through Al 3+ complexation and surface adsorption, which modifies ion availability and delays C-S-H nucleation, thereby regulating the timing of the silicate peak. Both NS and TEA can increase the intensity of the aluminate peak, while their combination produces an even stronger synergistic effect. TEA consistently contributes to LC 3 strength development at all ages, while NS mainly improves early-age strength. The synergistic effect of NS and TEA is more pronounced than either additive alone, with the LC 3 -3NS-0.2 %TEA (with 3 % NS and 0.2 % TEA) blend exhibiting the best performance across all ages. TEA leads to a greater consumption of CH compared to NS, while NS-TEA blends yield a higher volume of hydrates, including C-(A)-S-H gel, AFm, and AFt phases. Moreover, TEA primarily influences pore size distribution rather than total porosity, shifting larger, more harmful pores into smaller, less detrimental ones. The NS-TEA synergistic blend achieves the most favourable pore structure, characterised by the lowest content of harmful pores (>100 nm) and the highest proportion of fine pores (4.5–50 nm and <4.5 nm).
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产品关联
DOI
高影响因子
Cleaner Engineering and Technology
·
2021
·
IF 0
Huijuan Gong,Honglei Pang,Mengfan Du,Zezhi Chen
In order to obtain high performance polyvinylidene fluoride (PVDF) hollow fiber membrane for post combustion carbon dioxide (CO 2 ) capture from flue gas by membrane contact absorption technology, a novel mixed matrix membrane fabrication process was proposed in this study. The mixed matrix PVDF-SiO 2 (silicon dioxide)-HDTMS (hexadecyltrimethoxysilane) hollow fiber membranes fabricated via this process exhibit super-hydrophobicity on the outer surface and high mechanical strength. Among the membranes, the PVDF-SiO 2 (1.5)-HDTMS membrane exhibited the highest CO 2 absorption performance, which was due to its excellent properties. It had water and diethanolamine (DEA, 1 mol/L) contact angles of 159.3° and 157.5°, respectively. Tensile strength, elongation at break, and LEP W (liquid entry pressure of water) of it were 3.2 × 10 6 Pa, 35.0%, and 9.0 × 10 5 Pa, respectively. The CO 2 absorption flux of PVDF-SiO 2 (1.5)-HDTMS membrane attained 2.39 × 10 −3 mol‧m −2 ‧s −1 , which was 7.2% and 141.4% higher than that of the PVDF-HDTMS-1.5 and PVDF membranes, respectively. Moreover, CO 2 absorption flux of the PVDF-SiO 2 (1.5)-HDTMS membrane decreased only 3% after twenty days of continuous operation. Highlighted by the outstanding performance in membrane contact CO 2 absorption, the PVDF-SiO 2 (1.5)-HDTMS membrane shows great potential in the application of membrane contact absorption for post-combustion CO 2 capture.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
POWDER METALLURGY AND METAL CERAMICS
·
2022
·Vol. 60
·期 11
·738-747
·
IF 0.913
Sun W.Z.,Huang Z.K.,Lu Y.J.,Liu L.M.,Xiao Z.
Preliminary experiments revealed solid-state reactions in the SiC–TiO 2 –MgO system that resulted in forming TiC compound, providing, thus, a new reaction system for the formation of TiC–SiC ceramic matrix composites. This system’s high-temperature physicochemical reaction and the phase equilibrium relations of TiC–SiC with salt compounds in the SiC–TiO 2 –MgO system will be examined in this paper. The obtained findings may significantly contribute to the composition of TiC–SiC ceramic composites. Solid-state reactions in the SiC–TiO 2 –MgO system were investigated during experimental procedures employing thermodynamic computing. Chemical kinetics of some reactions were highlighted and discussed, including mutual displacement reaction of SiC + TiO 2 = = TiC + SiO 2 to form TiC, the acid-based reaction of MgO with SiO 2 or TiO 2 to form Mg-silicates (Mg 2 SiO 4 , MgSiO 3 ) or Mg-titanates (Mg 2 TiO 4 , MgTiO 3 , MgTi 2 O 5 ), the reduction reaction of 2TiO 2 + C = Ti 2 O 3 + CO (g) with the involvement of excessive TiO 2 . The appearance of Ti 2 O 3 may also be due to significant surface defects of rutile TiO 2 (110) derived from its bulk Ti 3+ defects. However, Mg-silicates and Mg-titanates were not found in the design of the current SiC–TiO 2 –MgO system but the oxide design of the MgO–TiO 2 –SiO 2 system. As the SiC–TiO 2 –MgO ternary system was extended to the SiC–SiO 2 –TiC–TiO 2 –MgO quinary system, the phase relations form a combination of the TiC–SiC phase relations with all salts of the TiO 2 –MgO–SiO 2 system. Experiments confirmed the formation of TiC and its coexistence with SiC and all binary compounds of the TiO 2 –MgO–SiO 2 system, specifying an interaction in the SiC–SiO 2 –MgO–TiO 2 –TiC system. The phase relations of the quinary system were established, followed by constructing its phase diagram relations at 1400°C, which would be beneficial for the compositional design of TiC–SiC, TiC–ceramic, and SiC–ceramic composites.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）