LANGMUIR
·
2024
·
IF 3.7
Jiacong Wu,Shiyuan Liu,Xinnan Ma,Cailiang Zhang,Chengxiang Feng,Lei Wang,Juan Han,Yun Wang
The current study presents a scalable approach for the preparation of temperature-responsive PEG/SiO2/PNIPAM-PEA Janus particles and, for the first time, investigates their potential applications in stabilizing foam and defoaming by adjusting the temperature. The method utilizes a (W1 + O)/W2 emulsion system, which incorporates appropriate surfactants to stabilize the emulsion and prevent rapid dissolution of the hydrophilic triblock polymer PEG-b-PTEPM-b-PNIPAM in water. The PEG/SiO2/PNIPAM-PEA Janus particles with temperature-responsive characteristics were synthesized in a single step that combined the sol–gel reaction and photoinduced free radical polymerization. The contact angle of the hydrophilic PEG/SiO2/PNIPAM surface was measured to be 54.7 ± 0.1°, while the contact angle of the hydrophobic PEA surface was found to be 122.4 ± 0.1°. By incorporating PEG/SiO2/PNIPAM-PEA Janus particles at a temperature of 25 °C, the foam’s half-life is significantly prolonged from 42 s to nearly 30 min. However, with an increase in temperature to 50 °C, the foam’s half-life rapidly diminished to only 44 s. This innovative application effectively enhances foam stabilization at low temperatures and facilitates the rapid dissipation of foam at high temperatures.
研究领域:
材料科学
·
化学工程
·
胶体与表面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Ying Huang,Hualong Huang,Yinghao Guo,Yulin Ding,Yifan Zhou,Hang Yu,Yinghao Liu,Wenmu Li
The poor inherent water resistance and electrical performance of paper-based electrodes restrict their applications in electronic products. Organic–inorganic nanocomposites, which can integrate the merits of various materials, are the best way to compensate for these shortcomings. In this study, a facile strategy was developed to fabricate a superhydrophobic tissue/MXene/TPU/SiO2 paper-based composite for multidimensional bionic surface and wearable strain sensor applications. Inspired by taro leaves, superhydrophobic surfaces consisting of TPU/SiO2 micronanospheres were prepared by electrospinning. High strain-sensing performance is achieved by the microcrack extension mechanism of the tissue/MXene electrode. The integrity of the tissue/MXene/TPU/SiO2 paper-based composites was enhanced by systematically optimizing the multilayered assembly processes and technologies. Our composite paper demonstrated high mechanical strength and highly effective antibacterial and self-cleaning properties (water contact angle, WCA = 157°), which could not only inhibit the adhesion of Escherichia coli and Staphylococcus aureus but also repel solid contaminants upon washing with water. The paper-based wearable strain sensor displayed a very high sensitivity (gauge factor, GF = 580) over a broad strain range (bending angle from 0 to 160°) and a fast response time (53 ms). Our e-skin sensor array can effectively capture the wrist motions of table tennis players. Moreover, this sensor also showed a very high breathability (56.5 g·m–2·h–1) for comfort of wear. Notably, our paper-based sensors can be disposed of by burning, which can mitigate potential electronic waste pollution. Our strategy for fabricating paper-based sensors with superhydrophobicity, breathability, and antimicrobial properties could potentially provide promising prospects for future flexible electronics.
研究领域:
材料科学
·
柔性电子
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2016
·
IF 2.632
Huijing Li,Junjie Yuan,He Qian,Limin Wu
In this study, we have successfully introduced siloxane monomer, 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane (V 4 ) into the shell of silica/poly(methyl methacrylate-butyl acrylate) (SiO 2 /P(MMA-BA)) core–shell nanocomposite colloids via in-situ emulsion copolymerization. The obtained nanocomposite films with 50% silica content all show excellent transparency (nearly 100% transmittance in visible range) and film-forming property (T g under 30 °C). More importantly, the addition of V 4 can significantly increase the weathering durability of the film by improving the water repellency, cross-linking degree and UV-blocking property of the film.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Xuehao Zhang,Han Jia,Guopeng Wu,Mingming Xu,Chuanqi Li,Ziwei Wei,Wenxin Cao,Xiyang Wang,Kaihe Lv,Dexin Liu,Pan Huang
The eco-friendly viscoelastic surfactant (VES) system, whose viscoelasticity can be enhanced by nanoparticles (NPs), is an appropriate substitute for polymer fracturing fluid. In the present study, the JA12C NPs (Janus SiO 2 nanoparticles decorated with dodecyl hydrophobic carbon chain) are successfully synthesized and characterized by Fourier transform infrared spectra (FTIR), thermal gravimetric analysis (TGA), dynamic light scattering (DLS), and transmission electron microscope (TEM). The prepared JA12C NPs are separately induced into three kinds of fracturing fluids (anionic-based VES (aVES), cationic-based VES (cVES), and zwitterionic-based VES (zVES) fluids) to investigate their effects on the rheological properties of various VES fluids. It is found that additional JA12C NPs significantly enhance the viscoelasticity of cVES fluid, while hardly affecting that of aVES and zVES fluids. Then the zeta potential of mixed JA12C/surfactant dispersions and the rheological parameters of diverse VES systems are measured to explore the interaction mechanism of wormlike micelles (WLMs)/JA12C mixture. It is believed that the intensive hydrophobic interaction and the moderate electrostatic repulsion between WLMs and JA12C should be responsible for the visibly enhanced viscoelasticity of JA12C-assisted cVES (cJAVES) fluid. This work suggests the feasibility of using Janus NPs to enhance the tolerance properties of VES fluids in harsh conditions, which fills the gap in the applications of VES fracturing fluids incorporating Janus NPs.
研究领域:
石油工程
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Shujie Liu,Haoru Shan,Shuhui Xia,Jianhua Yan,Jianyong Yu,Bin Ding
Flexible oxide ceramic films offer prospects for revolutionizing diverse fields such as energy and electronics, but their fabrication methods are typically elaborate and cannot be expanded. Here, we report a scalable strategy to fabricate flexible and robust SiO2 nanofiber films with controllable morphology using a sol–gel electrospinning method followed by low-temperature calcination. When applied to composite polymer electrolytes (CPEs) for solid-state batteries by filling polyethylene oxide into porous ceramic films, SiO2 nanofibers with large surface areas (51 m2·g–1) demonstrate strong Lewis interfacial interactions and isotropic ionic transfer channels that mitigate polymer crystallinity and Li+-concentration polarization, imparting high conductivity (1.3 × 10–4 S·cm–1 at 30 °C) and structural stability to the electrolytes. As a result, all-solid-state LiFePO4||Li shows great rate capability and long cycling stability with high discharge capacities of 159 and 132 mA·h·g–1 at 0.5C under 60 and 45 °C, respectively, demonstrating broad commercial prospects for the scale production of efficient solid electrolytes.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Chengmin Hou,Qi Gui,Jiaqi Song,Ze Fan
The application potential of superhydrophobic coatings is inherently constrained by their stability, durability, and apparent color characteristics. To address these limitations, a thin superhydrophobic coating was prepared on the surface of cotton fabric, featuring a micron mastoid structure with distinct fiber boundaries. This coating is achieved through the grafting of polymer poly (trifluoroethyl methacrylate-random-glycyl methacrylate) and 3-(trimethoxysilyl) propyl methacrylate modified SiO 2 nanoparticles onto the fabric surface. The chemical composition, thermal stability and micro/nano structure of the coating were evaluated by infrared spectroscopy, X-ray diffraction, thermogravimetric analysis and scanning electron microscopy. The superhydrophobic coating not only exhibits exceptional oil-water separation capabilities, achieving a remarkable separation efficiency of 98%, but also ensures high reusability, enduring up to 10 consecutive oil-water separation cycles without significant performance degradation. Furthermore, the coating manifests mechanical stability and durability, maintaining its superhydrophobic nature even after undergoing rigorous mechanical abrasion, immersion in acidic and alkaline solutions, as well as exposure to elevated temperatures. In addition, an in-depth analysis was conducted to evaluate the influence of this superhydrophobic modification on the inherent characteristics of cotton fabric, specifically its color, whiteness, and gloss. The findings reveal that the hue of the cotton fabric remains unaltered, while a marginal enhancement in whiteness and a slight reduction in gloss are observed post-modification, indicating small impact on the inherent characteristics of cotton fabric.
研究领域:
材料科学
·
纺织工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2022
·
IF 6.044
Le Fu,Bohan Wang,Junjie Song,Chenglong Xu,Guofu Xu,Qiuan Sun,Jiwu Huang,Håkan Engqvist,Wei Xia
The content of crystalline phase plays a significant role in manipulating the microstructure and mechanical properties of glass-ceramics. This study aims at exploring the optimum content of crystalline phase in ZrO 2 –SiO 2 nanocrystalline glass-ceramics (NCGCs) in terms of obtaining the highest mechanical properties. To this end, the mechanical properties of ZrO 2 –SiO 2 NCGCs with 70 mol%, 75 mol%, 80 mol% ZrO 2 were tested and compared with those of the previously prepared NCGCs with ZrO 2 content ranging from 35 mol% to 65 mol%. Results showed that 65 mol% was the optimum content of ZrO 2 in terms of obtaining the highest flexural strength . The flexural strength of NCGCs with ZrO 2 content over 65 mol% was lower than that of the NCGCs with 65 mol% ZrO 2 . This was because the NCGC with 65 mol% ZrO 2 had a homogenous microstructure, with ZrO 2 nanocrystallites homogeneously distributed in an amorphous SiO 2 matrix. Whereas, when ZrO 2 content was increased to 75 mol%, ZrO 2 nanocrystallites were not homogeneously distributed in the SiO 2 matrix anymore. The formation of SiO 2 “holes/canyon” due to ZrO 2 grain coalescence resulted in the decrease of flexural strength. The fracture mechanism and wear properties of the NCGCs were also investigated.
研究领域:
材料科学
·
工程学
✓ 已验证
DOI
高影响因子
Journal of CO2 Utilization
·
2025
·
IF 8.4
Heng-Bo Zhang,Guo-Qing Yang,Jiageng Li,Zhong-Wen Liu
Transition metal is quantitatively investigated as a promoter of Pt-supported catalysts for the oxidative dehydrogenation of propane with CO 2 (CO 2 -ODP). However, the criteria for selecting the transition metal are largely from trial and error. In this work, Pt/SiO 2 catalysts promoted with 3d transition metals (TMs) of Mn, Fe, Co or Ni (PtTM/SiO 2 ) are comparatively studied for CO 2 -ODP. We found that the C 3 H 6 selectivity and conversions of propane and CO 2 are clearly improved when TMs are introduced into Pt/SiO 2 . Moreover, the apparent activation energy for the C 3 H 6 formation during CO 2 -ODP is decreased in the order of PtNi/SiO 2 > PtCo/SiO 2 > PtFe/SiO 2 > PtMn/SiO 2 . Among the investigated catalysts, PtMn/SiO 2 is the most active and selective catalyst for the activation of C-H bonds in propane to produce C 3 H 6 while PtNi/SiO 2 is the most favorable catalyst for the formation of by-products via the dry reforming of propane with CO 2 and propane cracking. Essentially, the catalytic results are well explained as the increased electron density of Pt over the PtTM/SiO 2 catalysts via the enhanced electron transfer from TM having a smaller electronegativity. This understanding is important for the rational design of a high-performance Pt-based bimetallic catalyst for CO 2 -ODP.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Smart Materials and Structures
·
2020
·Vol. 29
·期 11
·114003
·
IF 3.613
Jisheng Pan,Zhijun Chen,Qiusheng Yan
To study the rheological properties and polishing performance of magnetorheological fluids (MRFs) prepared with SiO2@carbonyl iron (CI) core-shell particles, SiO2@CI core-shell particles with different shell thicknesses were synthesized by an improved Stöber method controlling the amount of tetraethyl orthosilicate (TEOS). Then, four types of MRFs which dispersed with core-shell particles with thin shells, core-shell particles with thick shells, SiO2 particles, or carbonyl iron were prepared for sapphire polishing. The results show that the rheological properties of MRF based on thicker shell SiO2@CI are enhanced compared to those of MRFs prepared by dispersing abrasive and CI. Comparing with other MRFs, sapphire can obtain better surface quality when using thicker shell SiO2@CI. The MRF fabricated by SiO2@CI core-shell particles can increase the contact area between the abrasive and the workpiece and enhance the contact stress, which improves the solid-phase reaction rate and mechanical removal efficiency of silica and sapphire, thereby improve the polishing efficiency.
研究领域:
材料科学
·
机械工程
·
表面工程
✓ 已验证
DOI
高影响因子
APPLIED ENERGY
·
2019
·
IF 8.426
Zain Ali Saleh Bairq,Hongxia Gao,Yufei Huang,Haiyan Zhang,Zhiwu Liang
A significant impediment to the widespread adoption of amine-based post-combustion technique for CO 2 capture from flue gas is the huge energy demand for amine solvent regeneration. In this study, five novel bifunctional heterogeneous catalysts e.g., SO 4 2− /ZrO 2 /SiO 2 with different molar ratios of zirconia and SO 4 2− /ZrO 2 as a parent catalyst were synthesized and applied to evaluate their effectiveness in enhancing the CO 2 desorption and solvent regeneration of 5M monoethanolamine solution with CO 2 loading of 0.5 ± 0.01 mol CO 2 /mol monoethanolamine at 97 °C. The catalysts were characterized by Fourier transform-infrared spectrometry, pyridine-infrared spectroscopy, X-ray diffraction, N 2 -adsorption-desorption, and ammonia-temperature programmed desorption. The results demonstrated that these catalysts can significantly reduce the heat duty for CO 2 desorption by 36.48% compared to without catalyst and enhance desorption rate by 35.1%. The results also showed that SO 4 2− /ZrO 2 /SiO 2 15% presented the highest efficiency compared to the other SO 4 2− /ZrO 2 /SiO 2 ratios and the super solid acid catalyst SO 4 2− /ZrO 2 . Additionally, to investigate if the catalysts induce any unfavorable effects on the amine, the absorption of CO 2 by regenerated amine solvent was studied. Finally, a reaction mechanism for the amine solvent regeneration with the synthesized catalyst e.g., SO 4 2− /ZrO 2 /SiO 2 was suggested.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2012
·Vol. 64
·期 2
·347-357
·
IF 1.632
Zhang Jian-Ming,Zhai Shang-Ru,Zhai Bin,An Qing-Da,Tian Ge
Multifunctional nanomaterials with task-specific physicochemical properties, especially core–shell nanostructures with Fe 3 O 4 core and NH 2 -functional shells (Fe 3 O 4 @SiO 2 –NH 2 ), have been extensively investigated as high-performance adsorbents, catalysts and catalyst supports; and in most cases the controllable sol–gel technique is the choice for fabrication of this kind of widely applied materials. Herein, we demonstrated that mono-dispersed and spherical Fe 3 O 4 @SiO 2 –NH 2 nanomaterials with magnetic response core, NH 2 -functional shell structure can be facilely prepared by co-condensation of TEOS with APTMS using a versatile sol–gel process. It was shown that the proper usage of APTMS and appropriate pre-hydrolysis time of TEOS were crucial and key steps for formation of highly uniform and desirable amino loading Fe 3 O 4 @SiO 2 –NH 2 materials. The TEOS pre-hydrolysis and the critical time (around 90 min) before the addition of APTMS prove to be vital for uniform structure evolution, while the appropriate concentration of APTMS (~2.28 mmol L −1 in our system) leads to well-dispersed materials with relatively high loading of amino functionality. The as-prepared Fe 3 O 4 @SiO 2 –NH 2 magnetic nanoparticles prepared under optimum conditions possessing superparamagnetic behavior, uniform core–shell structure (~200 nm in diameter), relatively large BET surface area (~138 m 2 /g) and high incorporation of amino-functionality (~2.90 wt %).
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Huixian Zhong,Jiaming Wang,Shaoxia Guo,Kegong Fang,Yuan Liu
In this work, Rh–Co/La2O3–SiO2 showed excellent selectivity to ethanol for direct ethanol synthesis from syngas. The best catalyst exhibited 42.8% selectivity to ethanol with CO conversion of 12.3% and in 145 h’ running maintained stable at 553 K, 3 MPa and GHSV of 3900 mL (gcat h)−1. The investigate results indicated that the interaction of cobalt denoting electron to rhodium adjusted the amounts of carbon monoxide adsorbed associatively and dissociatively, and maybe created a new active site pair of Rh0/Coδ+ for generating ethanol. Moreover, the mutually doping effect could dilute Co and Rh atoms in Rh–Co nanoparticles (NPs), which effectively suppressed the formation of C2+H and C3+OH, and thus led to the high ethanol selectivity and good anticoking property assisting with the carbon eliminating effect of La2O3. Owing to the high dispersion of Rh–Co NPs, the catalyst showed good activity and high resistance to sintering.
研究领域:
催化化学
·
材料科学
✓ 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）