Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yang Hu,Yan kui Cheng,Shuang Li,Lunfeng Liu,Xiaoyan Lin
Oily dyeing wastewater poses significant environmental hazards and therefore requires effective treatment. Although electrospun fiber membranes (EFMs) have been employed for oily dyeing wastewater treatment, conventional approaches typically involve a two-step process. This study presents a novel single-step modification method for EFMs, enabling efficient treatment of oily dyeing wastewater through a simplified single-membrane separation process. Experimental results demonstrated that spontaneous self-assembly occurs between ethyl cellulose (EC) colloids and hydrophilic SiO₂ nanoparticles in mixed solutions. Furthermore, these self-assembled colloids can undergo liquid-phase-induced self-organization on polyacrylonitrile (PAN) electrospun fiber membranes (EFMs), leading to a "welding" effect that firmly immobilizes both EC and hydrophilic SiO₂ nanoparticles onto the PAN fibers.The self-assembly process effectively prevented the agglomeration of SiO₂ nanoparticles, resulting in their uniform and stable fixation on the PAN fibers. Compared to the pristine PAN EFM, the PAN-EC-SiO₂ EFM exhibited significantly enhanced tensile strength, pH tolerance, surface roughness, hydrophilicity, hydration capacity, and methylene blue adsorption performance. Consequently, this modified membrane demonstrated dual functionality, effectively separating both oil-water emulsions and oily dyeing wastewater. During oily dyeing wastewater treatment, the PAN-EC-SiO₂ EFM achieved a methylene blue rejection rate of 92 %, an oil separation efficiency of 97.2 %, and a high flux of 153 L/m²·h.
研究领域:
环境科学
·
膜技术
·
纳米技术
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Heng Wang,Shichao Li,Yeqing Liu,Yuhang Liu,Tianliang Tan,Zhishen Yin,Xiaoyong Su,Duo Chen,Jialiang Li,Zhanjun Wu
Epoxy resin (EP) adhesive performance is critical for the glass fiber-reinforced composites (GFRP) in the Membrane-Type liquefied natural gas (LNG) cargo containment systems (CCS). In this work, the polyurethane-modified epoxy resin (EPU) and Nano-SiO 2 were introduced into EP to develop a resin system with enhanced bonding strength and durability for bonding glass fiber and aluminum foil. The results demonstrated that the peel strength of the EP/EPU50/2 wt.% Nano-SiO 2 -GF reached 3.78 kN m −1 at room temperature (RT), which was approximately 172% higher than that of EP-GF (1.39 kN m −1 ). Even at −190°C, the peel strength remained 2.66 kN m −1 . The continuous flexible polyurethane phase dissipated mechanical energy through chain extension and hydrogen bonding, while the Nano-SiO 2 improved the crack propagation resistance, thus enhancing adhesion. In addition, after 30 days of exposure to ultra-low temperature (−196°C) and 40 thermal cycles, the peel strength of EP/EPU50/2 wt.% Nano-SiO 2 -GF at RT still reached 2.92 kN m −1 and 3.53 kN m −1 , respectively. SEM analysis revealed that ultra-low temperature could induce interfacial debonding between the resin layer and aluminum foil. The transition of failure mode from cohesive failure to adhesive failure was the main reason for the decrease in peel strength.
研究领域:
材料科学
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高分子化学
·
复合材料工程
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低温工程
·
界面粘附力学
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Yanghong Liu,Yunzhen Chang,Ying Zhang,Yanping Li,Wenjing Hou,Sheng Zhu,Kan Hang,Gaoyi Han
The conservation of sandstone cultural relics has gained increasing attention due to their scarcity, historical and cultural value. However, they exhibit a vulnerability that must endure degradation caused by prolonged outdoor exposure, particularly the hazards caused by water infiltration. Herein, we have designed and developed a hydrophobic composite coating for safeguarding outdoor-exposed sandstone relics. The coating has integrated the silica nanoparticles modified by perfluorodecyl triethoxysilane (FAS-17) with fluorinated resin and polymethyl methacrylate (PMMA) to achieve waterproofing for outdoor-exposed sandstone. The protective effect of the coating has been systematically evaluated through water contact angle (WCA) measurements under various environmental tolerances such as acid rain resistance, mechanical bearing capacity, and adaptability for wide temperature range adaptability (-20 ℃ and 80 ℃). The tested results demonstrate that the coating on sandstone shows superhydrophobic ability and stability. For example, the coating exhibits exceptional hydrophobicity (WCA > 150°) and self-cleaning properties after various accelerated aging cycles such as under acidic rain, mechanical peeling, sand impact, high and low temperature environments. Importantly, the coating on sandstone can preserve the inherent permeability of sandstone substrates while providing robust interfacial adhesion. These outcomes highlight the potential of the FAS-SiO 2 based composite coating as a durable and compatible coating for mitigating outdoor environment-induced deterioration in sandstone cultural heritage conservation.
研究领域:
文化遗产保护
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材料科学
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表面工程
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环境科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
BIOTECHNOLOGY AND APPLIED BIOCHEMISTRY
·
2017
·Vol. 65
·期 2
·220-229
·
IF 1.413
Huaiyan Sun,Xinyu Jin,Feng Jiang,Ruifeng Zhang
A zinc oxide (ZnO) nanowires/macroporous silicon dioxide composite was used as support to immobilize horseradish peroxidase (HRP) simply by in situ cross-linking method. As cross-linker was adsorbed on the surface of ZnO nanowires, the cross-linked HRP was quite different from the traditional cross-linking enzyme aggregates on both structure and catalytic performance. Among three epoxy compounds, diethylene glycol diglycidyl ether (DDE) was the best cross-linker, with which the loading amount of HRP with p I of 5.3 reached as high as 118.1 mg/g and specific activity was up to 14.9 U/mg-support. The mass loss of HRP cross-linked with DDE was negligible during 50-H leaching at 4 °C, and the thermal stability of the immobilized HRP was also quite good. The catalytic performance of immobilized HRP to decolorize anthraquinone dye was explored by using Reactive Blue 19 (RB 19) and Acid Violet 109 (AV 109) as model substrates. The results indicated that the immobilized HRP exhibited high decolorization efficiency and good reusability. The decolorization efficiency reached 94.3% and 95.9% for AV 109 and RB 19 within the first 30 Min, respectively. A complete decolorization of these two dyes has been realized within 2–3 H by using this new biocatalysis system.
研究领域:
生物化学
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环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Chen Zhang,Benzheng Gao,Qi Li,Xin Wang,Jianliang Xie
Porosity is a characteristic feature of atmospheric plasma–sprayed (APS) coatings that strongly influences their physical and functional properties. However, studies on its effect on the electromagnetic (EM) performance and high-temperature stability of microwave-absorbing coatings (MACs) remain limited. In this work, FeSiAl/CaO–B 2 O 3 –SiO 2 composite coatings with different porosities were fabricated by adjusting powder feed rate (PFR). Microstructural evolution, EM properties, and isothermal oxidation behavior of prepared composite coatings were systematically investigated. Results show that increasing PFR reduces the extent to which particles are melted, leading to higher porosity due to the retention of unmelted particles. The increased porosity disrupted local conductive networks, altered the complex permittivity and permeability, and lowered the bonding strength of the coatings. Moreover, pores and cracks facilitated oxygen diffusion, accelerating oxidation and crack propagation at elevated temperatures. After high-temperature oxidation, the decrease in complex permittivity improved impedance matching and broadened the absorption bandwidth. These findings provide new insights into microstructure–property relationships of APS-deposited MACs and offer a strategy for tailoring the coating porosity to simultaneously optimize their EM absorption performance and high-temperature oxidation resistance.
研究领域:
材料科学
·
表面工程
·
功能材料
·
高温防护
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Haochuan Wang,Xin Liu,Hui Xie,Chong Wang,Wei Wang,Jinxiang Hong,Pan Feng
The poor dispersion of nano-SiO₂ in shotcrete systems limits its effectiveness and can even lead to detrimental effects. To address this issue, ettringite suspension was introduced as a novel dispersion carrier. Nano-SiO₂ was found to physically adsorb onto ettringite crystals, significantly improving its spatial distribution without organic dispersants. Compared to direct nano-SiO₂ addition, the incorporation of ettringite—especially via premixing—markedly enhanced performance. With premixed nano-SiO₂ and ettringite, and nano-SiO₂ content ranging from 0.25 % to 1 %, the 6-hour compressive strength increased by 93∼600 %, while the initial and final setting times were reduced by 46∼79 % and 47∼91 %, respectively, compared to the control. Isothermal calorimetry, quantitative X-ray diffraction (QXRD), and thermogravimetric analysis (TG) confirmed that the well-dispersed nano-SiO₂ accelerates early cement hydration by providing abundant nucleation sites facilitating rapid formation of hydration products, mainly calcium silicate hydrate (C–S–H). Simultaneously, ettringite acts not only as a dispersant but also strengthens the early-age framework, enhancing load transfer within the shotcrete matrix.
研究领域:
建筑材料学
·
水泥基材料
·
混凝土技术
·
纳米材料应用
·
土木工程材料
✓ 已验证
产品关联
DOI
高影响因子
Journal of CO2 Utilization
·
2025
·
IF 8.4
Ruifeng Zhou,Zhou Yang,Xitong Yang,Menglong Zhang,Jiahui Gao,Sajjad Hussain,Qiuye Li
Owing to their cost-effectiveness and high efficiency, solid amine adsorbents derived from solid waste are deemed highly promising for CO 2 capture. Nevertheless, traditional solid waste-based adsorbents are predominantly limited by their uniform pores structure, which significantly hampers the kinetics of CO 2 adsorption-desorption. In this study, we innovatively introduce an efficient method for recovering Si elements via alkali leaching and subsequently synthesize hierarchical porous SiO 2 through gas-phase-assisted precipitation and self-assembly, forming a distinctive "lamellar-spherical stacking structure". This unique hierarchical porous architecture enables the efficient incorporation of pentaethylenehexamine (PEHA) organic amines, thereby minimizing pore blockage due to amine functionalization and alleviating mass transfer resistance during adsorption and desorption. The resultant solid amine-functionalized hierarchical porous structures exhibit a CO 2 adsorption capacity of 4.815 mmol/g at 70 °C and maintain remarkable stability over 10 cyclic tests. Thus, the rational design of pore effects and functionalized molecular configurations synergistically enhances the CO 2 adsorption capacity in flue gas and stability, offering robust technical support for the application of solid amine CO 2 adsorbents.
研究领域:
环境科学
·
材料科学
·
化学工程
·
能源技术
·
吸附分离
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Qiaolin Tang,Feng Zhu,Yanqi Li,Sijie Yin,Yunbo Xu,Huicheng Yan,Ming Kang,Guanjun Chang
In the present study, a novel silane coupling agent, designated INSi, was synthesized via a facile synthetic route, incorporating indole-functional moieties. This agent was further employed for the surface modification of homemade silica nanomicrospheres (SMPs). The ensuing nanomicrosphere composite, denoted as SiO2@IN, exemplified pronounced interfacial π–π interactions. Optimization of the reaction conditions was conducted using the response surface optimization technique. Subsequent validation of interfacial π–π interactions was accomplished through a synergistic approach, integrating theoretical calculations and comprehensive analyses of spectral and morphological attributes exhibited by the SiO2@IN.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Shiyi Liu,Hao Hu,Min Sha,Ding Zhang,Biao Jiang
A novel fluorinated methacrylate monomer (FMA) containing perfluorinated branched-short chain groups was successfully synthesized, and core-shell emulsions with different fluorine contents were prepared by two-step seed emulsion polymerization. The fluorinated polyacrylate (PFA) emulsion was characterized by fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS) and transmission electron microscopy (TEM). By using of the prepared fluorinated polyacrylate (PFA) emulsion and silica sol, a convenient one-step spray method that led to substrates with efficient water repellency was developed. The water contact angle (WCA) of these coatings was up to 152°, and the water droplets can fall off freely. In addition, several varies substrates were coated and all of them exhibited superhydrophobicity in order to verify the universality of the coating, and the coatings had good adhesion on these substrates. The coated cotton fabric also had certain anti-fouling properties and acid-base resistance. These substrate independent coatings have the potential to be used in many fields.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xuemei Li,Haitao Meng,Qin Guo,Zeyang Zhu,Guanhua Jin,Mingchao Xu,Qiuyi Du,Quanlong Xu,Shouzhu Li
The integration of superwettability and antibacterial functionality into inorganic nanofibrous membranes presents a promising strategy to address the dual challenges of oil-water separation and microbial contamination. In this study, we engineered an N-halamine-functionalized SiO 2 nanofibrous membrane (APTS-SiO 2 NFMs-Cl) through a synergistic electrospinning, sol-gel amination, and chlorination process, leveraging the covalent grafting of APTS and subsequent transformation of -N-H to N-Cl active sites. The APTS-SiO 2 NFMs-Cl’s superhydrophilicity/underwater superoleophobicity, governed by its high surface energy and hierarchical nanofibrous architecture, enables efficient separation of oil-water emulsions while resisting fouling through an anti-adhesion mechanism. Crucially, the N-halamine moieties endow APTS-SiO 2 NFMs-Cl with rapid, contact-driven bactericidal activity, achieving 99.9 % inactivation of E. coli and S. aureus within 20 min via oxidative chlorine release. In addition, the regeneration ability of APTS-SiO 2 NFMs-Cl was given by the mutual transformation between N-H and N-Cl bonds. The continuous antibacterial performance (>95 % efficiency) of APTS-SiO 2 NFMs-Cl after 20 chlorination-regeneration cycles showed that this was attributed to the dynamic reversibility of N-halamine chemistry. Beyond environmental applications, APTS-SiO 2 NFMs-Cl shown remarkable biocompatibility and hemocompatibility, suggesting strong potential for use in medical protective materials requiring simultaneous barrier and antimicrobial functions. Overall, this study provided a new strategy for designing robust, multifunctional inorganic nanofiber membranes that bridge environmental remediation and biomedical protection.
研究领域:
环境工程
·
材料科学
·
纳米技术
·
抗菌材料
·
水处理
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 30
·11949-11956
·
IF 8.262
Lian-Kui Wu,Xin-Yu Liu,Ji-Ming Hu
Ti-supported IrO2 or RuO2 oxide coated electrodes are widely used for the oxygen evolution reaction (OER) in acidic media. Electrocatalytic activity and long-term stability need to be further improved for these types of electrodes. A highly porous and well-adhered electrodeposited SiO2 (e-SiO2) film is proposed as the interlayer in this work to meet the above-mentioned requirements. The results show that the active oxide fully fills in the porous network throughout the whole thickness of the e-SiO2 film, to form “total-depth” highly porous oxide electrocatalytic coatings. For this reason, more than 1 order of magnitude higher apparent activity towards the OER at the Ti/e-SiO2/IrO2 (or RuO2) electrode is achieved compared to that of the conventional Ti/IrO2 or Ti/RuO2 electrode. Literature survey indicates that these novel electrodes are one of the most active Ti electrodes ever reported. The service life of this type of electrode is also obviously enhanced due to the “inter-locking” structure formed between the active oxide layer and e-SiO2 film.
研究领域:
电化学
·
材料科学
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2020
·Vol. 27
·期 7
·4133-4144
·
IF 4.21
Yang Huiyu,Li Ke,Liu Weiqiang,Liu Xin,Xu Weilin,Deng Bo
SiO 2 nanoparticles were synthesized by the Stober method. Their diameters were finely tuned from 250 to 580 nm by varying the NH 3 ·H 2 O and tetraethyl orthosilicate (TEOS) concentrations. SiO 2 particles with different diameters were assembled onto the surface of cotton fabric via the layer-by-layer electrostatic self-assembling method to achieve structural colored fabrics. The surface morphologies of the synthesized SiO 2 particles and structural colored cotton fabrics were analyzed by scanning electron microscopy. The chemical composition of SiO 2 particles was analyzed by Fourier transform infrared spectroscopy and X-ray diffraction. The thermal properties and color properties of structural color fabrics were analyzed by thermogravimetric analysis, UV reflectance spectroscopy and spectrophotometer.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）