International Journal of Applied Ceramic Technology
·
2024
·
IF 1.8
Danyang Qiu,Shujing Li,Yuanbing Li,Zhen Cai,Chengzhen Fu,ChangDong Wei
Fiberboard (FB) is extensively utilized in heat-insulating refractory materials owing to its lightweight nature and excellent resistance to high temperatures. Nevertheless, the inadequate mechanical properties and limited dimensional stability of FB hinder its further application. The vacuum filtration was utilized in this study to manufacture inorganically modified insulation FB, incorporating plus fiber/1260 fiber and silica sol as the primary constituents and sepiolite powder (HS) as the modifier. The experimental results show that the fabricated samples exhibited extremely high porosity (75.3%–90.2%) and low thermal conductivity (.063–.15 W m −1 K −1 , 200–800°C). The fibers were arranged in a three-dimensional structure, overlapping with each other, and the silica sol adhered to the fibers, forming a spatial mesh structure through cross-linking. Importantly, the incorporation of HS was effective in controlling the agglomeration of the silica sol, leading to a more uniform distribution within the fibers. Additionally, the study found that the mechanical properties (high hardness (64–72 HA)) and high-temperature durability of the FBs were enhanced due to the flocculant modification. This study highlights promising prospects for industrial applications and offers a cost-effective admixture for modifying and preparing high-performance FBs, which is expected to see broad adoption in thermal insulation and energy conservation applications.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Zilong Zhang,Xia Qin,Cuicui Xu,Fanbin Zhang,Xinrui Liu,Yumei Yang
In this study, an electro-Fenton gas diffusion electrode featuring air self-respiration was fabricated by incorporating carbon nanotubes, carbon nitride, and polytetrafluoroethylene onto graphite felt. The fabrication process involved a synergistic approach of ultrasonic impregnation and vacuum filtration, establishing a gas–liquid-solid tri-phase interface both on the surface and within the electrode. This preparation method facilitates autonomous air intake, diffusing it to the tri-phase reaction interface, thereby eliminating the necessity for aeration and reducing operational costs. The optimal electrode preparation conditions were determined through Box-Behnken Design response surface experiments, leading to the enhancement of H 2 O 2 production conditions. Under the optimized conditions, H 2 O 2 accumulation reached 45.83 mg L −1 cm −2 h −1 , surpassing the performance achieved with conventional ultrasonic impregnation and vacuum filtration methods. Furthermore, the performance of self-breathing and the impact factors are explored. Finally, the electrode’s efficacy was demonstrated through the degradation of phenol and bisphenol A with concentrations of 100 mg L −1 exhibiting degradation rates of 92 % and 95 %, respectively, within 60 min.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
·
IF 10.652
Junjie Deng,Zong Lu,Li Ding,Zhong-Kun Li,Yanying Wei,Jürgen Caro,Haihui Wang
Two-dimensional (2D) lamellar membranes show great application potential and are usually prepared by traditional vacuum filtration (VF), which is time-consuming and not easy to scale-up. Herein, 2D MXene membranes with a large area of up to 575 cm 2 are prepared by facile electrophoretic deposition (EPD) within 10 min. The negatively charged MXene nanosheets tend to deposit on anode to assemble 2D stacking membranes. Moreover, large sheets are preferentially deposited because they move faster, which leads to highly ordered 2D structure with excellent ions rejection. The Na + rejection of the EPD-membrane is ~99.5%, which is higher than that of the VF-membrane (~94.7%) with same thickness. Compared with VF, EPD-membrane area could be enlarged by two orders of magnitude while preparation time is shortened by one order of magnitude. Such EPD process can be extended to prepare other lamellar membranes, as a fast and economic route for scale-up of 2D membranes for different applications.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Peng Yang,Xin Xi,Tao Huang,Qianqian Zhong,Biao Jiang,Ruili Liu,Dongqing Wu
An acid-assisted vacuum filtration approach is developed in this work to fabricate perylene diimide (PDI) and single wall carbon nanotube (SWCNT) based organic lithium ion battery (LIB) cathodes by using concentrated sulfuric acid (H 2 SO 4 ) as the solvent. PDI and SWCNT can be readily dispersed in H 2 SO 4 by the protonation of their aromatic frameworks, thus rendering the effective combination of them in the acidic solution. The resulting PDI/SWCNT films are highly appealing flexible cathodes for LIBs by associating the intriguing electrochemical activity of PDI with the excellent electric conductivity and mechanical stability of SWCNT. Either with lithium foils or pre-lithiated carbon clothes as the anodes, the LIBs with PDI/SWCNT cathodes can deliver highly stable electrochemical performances in terms of rate capability and cycling stability. The PDI/SWCNT cathodes also have very good mechanical stability, enabling the LIBs based on them to reserve the battery performances at different bending states. The excellent electrochemical stability of the PDI/SWCNT cathodes is attributable to the acidic solution based processing method, which is expected to be expanded in the electrode fabrication of various organic secondary batteries with π-conjugated components.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Qian Xie,Chengjie Lu,Chengjie Yi,Tao Shui,Nosipho Moloto,Jiacheng Liu,Song-Zhu Kure-Chu,Takehiko Hihara,Wei Zhang,ZhengMing Sun
Hydrogel electrolytes have been widely used for constructing flexible electrochemical capacitors. However, the weak interface bonding between hydrogel electrolytes and electrode materials often leads to a deterioration of the electrochemical performance during deformation. Herein, a universal fabrication method utilizing vacuum filtration was developed to ensure a robust electrode–electrolyte interface. By in situ gelation of fibrous membranes, we overcome the hurdle of hydrogel filtration, enabling the construction of ultra-thin all-in-one electrochemical capacitors. This strategy has been demonstrated as a universal platform for constructing paper-like devices with an all-in-one structure that is applicable to a variety of electrochemical energy storage systems, including symmetric supercapacitors, asymmetric supercapacitors, ammonium-ion hybrid capacitors, and zinc-ion hybrid capacitors. Among these, the zinc-ion hybrid capacitors demonstrate a high specific capacitance of 474.1 F g−1 and a high energy density of 41.8 mW h cm−3. Additionally, series-connected electrochemical capacitors can power devices under deformations of bending, folding, and curling, showcasing the potential application of wearable energy storage.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 4
·621
·
IF 4.329
Xiao Wang,Shi Li,Yuanyuan Tu,Jiwen Hu,Zhenzhu Huang,Shudong Lin,Xuefeng Gui
The pH-responsive membrane is a new wastewater treatment technology developed in recent years. In this paper, a novel film with intelligent pH-responsiveness was first prepared by blending functional gates comprised of hydrolyzed aramid nanofibers (HANFs) into aramid nanofiber (ANF) membranes via a vacuum filtration method. Those as-prepared membranes exhibited dual pH-responsive characteristics, which were featured with a negative pH-responsiveness in an acidic environment and a positive pH-responsiveness in basic media. These dual pH-responsive membranes also exhibited a high tensile strength which could still reach 55.74 MPa (even when the HANFs content was as high as 50 wt%), a high decomposition temperature at ~363 °C, and good solvent resistance. The membranes described herein may be promising candidates for a myriad of applications, such as the controlled release of drugs, sensors, sewage treatment, etc.Keywords:aramid nanofiber;hydrolyzed aramid nanofiber;vacuum filtration;dual pH-responsive characteristic;high strength
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
PubMed
高影响因子
DESALINATION
·
2024
·
IF 8.3
Hong-Yu Fan,Cheng-Ye Zhu,Yu-Ren Xue,Jin-Bo Li,Chao Zhang,Tian-Yu Zhang,Li-Wu Fan,Zhi-Kang Xu
Polyamide nanofiltration membranes, due to their exceptional advantages of high separation efficiency and low energy consumption, have been widely used for hardwater softening, wastewater treatment and brackish water desalination. Despite extensive progress, the conventional fabrication process of polyamide membranes suffers from high chemical consumption (e.g., organic solvent), thus posing a tough challenge in how to harness the minimized chemical dosage for manufacturing intact polyamide membranes. Herein, we report a facile and green strategy to fabricate high-performance polyamide nanofiltration membranes with ultra-low organic solvent consumption, by virtue of vacuum filtration-spraying assisted interfacial polymerization (VSAIP) of piperazine and trimesoyl chloride. With this VSAIP method, uniform and intact polyamide membranes can be fabricated even under an ultra-low organic solvent dosage of 0.0398 L/m 2 , saving about 95 % organic solvent consumption compared with conventional methods. The results of SEM and AFM images and XPS spectra reveal that the VSAIP-enabled membranes show comparable morphologies and thickness as well as unaltered chemical composition. We further show that the VSAIP method can be applied for high-throughput production of polyamide nanofiltration membranes in a diameter of 30 cm, exhibiting excellent salt rejection (R Na 2 SO4 = 98.1 %) and high water permeance (22.4 L m −1 h −1 bar −1 ), comparable with the recently reported state-of-the-art nanofiltration membranes. The low organic solvent consumption and outstanding nanofiltration performance make VSAIP promising in green manufacturing of advanced membranes.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Xianfeng Ou,Xiaohan Yang,Jingqi Zheng,Mingxian Liu
Chitin nanocrystals modified by dopamine (D-ChNCs)/graphene oxide (GO) composite membranes were successfully prepared with the assistance of vacuum filtration. D-ChNCs/GO was analyzed by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). Atomic force microscopy (AFM) and scanning electron microscopy (SEM) were used to characterize the surface morphology of the membrane. The hydrophilicity of membrane is dependent on the content of the hydrophilic D-ChNCs, which shows a sharp increase of pure water flux from 8.8 of pure GO to 135.6 L·m–2·h–1. The rejection ratio of methylene blue (MB) and Congo red (CR) is as high as 99.3 and 98.3%, respectively. In addition, the oil rejection ratio of the membrane is above 97.5%, exhibiting good oleophobicity. The recycle experiment also demonstrates acceptable recyclability and proper regeneration for practical application. In total, D-ChNCs/GO composite membranes with excellent hydrophilicity, good oleophobicity, and anti-dye and anti-oil fouling have great potential in wastewater treatment.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 5
·6290-6297
·
IF 9.9
Cai Jiahao,Song Shizheng,Zhu Lijie,Lu Qipeng,Lu Zong,Wei Yanying,Wang Haihui
A kind of two-dimensional (2D) metal-organic framework (MOF) material, Cu-meso-tetrakis (4-carboxyphenyl) porphine (Cu-TCPP) nanosheets with wrinkled and flat morphologies are used as building blocks to assemble membranes by vacuum filtration (VF) and electrophoretic deposition (EPD) as energy-efficient nanofiltration (NF) membranes to remove dyes from water. Since the nanosheets with wrinkled structure can provide additional water transport channels, thereby increasing the water permeance, in the premise of a high rejection (> 97.0%) for the dye brilliant blue G (BBG) (1.60 nm × 1.90 nm), the water permeance of the membrane assembled by the wrinkled nanosheets (∼ 1170 nm) is about 4 times that of the membrane assembled by the flat nanosheets (∼ 530 nm), reaching 16.39 L·m −2 ·h −1 ·bar −1 . Additionally, the use of the relatively flat nanosheets and the membrane preparation method of electrophoretic deposition is more conducive to stack nanosheets orderly and reduce defects. Therefore, the water permeance of the membrane prepared by EPD (∼ 1170 nm) with flat nanosheets is about twice that of the membrane prepared by VF (∼ 530 nm), achieving 9.40 L·m −2 ·h −1 ·bar −1 with similar rejection (> 97.0%) of dye evans blue (EB) (3.10 nm × 1.20 nm). Furthermore, these membranes still exhibit good separation performance at high pressure of 0.6 MPa. Nanosheets with diverse structures and various membrane fabrication processes provide new directions for the separation performance optimization of 2D MOF materials for water purification.
研究领域:
材料科学
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环境工程
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纳米技术
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水处理
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产品关联
DOI
高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 40
·e202203024
·
IF 2.307
Xuehui You,Fang Liu,Guofei Jiang,Shuhua Chen,Beiya An,Rongli Cui
Graphical Degradation experiments of TC suggested that SCN/NT-2@PTFE composites showed the best photocatalytic performance under the optimal conditions, the degradation rate of tetracycline reached 99 % after 120 min of irradiation. The preparation of SCN/NT-2@PTFE composite membrane can solve the problem of difficult recovery and secondary contamination of powder catalysts. Herein we synthesized S-g-C 3 N 4 and N−TiO 2 catalysts by hydrothermal and calcination technologies and SCN/NT@PTFE membrane by a vacuum filtration method. The morphology and composition of the synthesized materials were analyzed by different characterization methods (SEM/HRTEM/XRD/XPS/UV-vis et.). The effects of different catalysts, pollutant concentrations, mass of catalyst and pH on the photo-degradation of tetracycline were investigated. The degradation rate of tetracycline by SCN/NT-2@PTFE membrane was as high as 99.9 % after 2 h of illumination. This was mainly because heterogeneous structure between S-g-C 3 N 4 and N−TiO 2 broadened the light absorption range and suppressed the carrier complex. Superoxide radicals (⋅O 2 − ) were proved to play a dominant role in the degradation reaction. After 20 days of stirring in water, the photocatalytic performance of membrane decreased slightly, demonstrating its good stability. The study of SCN/NT-2@PTFE membrane provides a new direction for the development of photocatalysis and membrane.
研究领域:
环境科学
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材料科学
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化学
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 48
·24368-24375
·
IF 6.895
Guanfusheng Yan,Chuan Xu,Zhaohui Meng,Mingzhen Hou,Wen Yan,Naibo Lin,Linfei Lai,Da Zhan
The rapid capacity loss caused by the shuttling effect of polysulfides is one of the great challenges of Li–S batteries. In this work, we adopted a simple solid-phase sintering method to synthesize titanium disulfide (TiS2) and further demonstrated it as a superior modifier of separators for Li–S batteries. Two commonly adopted modification processes of separators, including vacuum filtration (VF) and slurry casting (SC) have been used to prepare TiS2/Celgard separators. TiS2-VF/Celgard can better restrain the polysulfide shuttling effect compared with TiS2-SC/Celgard. A TiS2-VF/Celgard-based Li–S battery has a reversible capacity of 771.6 mA h g−1, with a capacity retention of 645.6 mA h g−1 after 500 cycles at 2.0 C, corresponding to a capacity fading rate of ∼0.033% per cycle. This study has shown the potential of TiS2 as a multifunctional modifier of separators for high performance and long cycle life Li–S batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2016
·
IF 5.886
Li Cui,Ying-Jiao Zhang,Wei E. Huang,Bi-Feng Zhang,Francis L. Martin,Jun-Yi Li,Kai-Song Zhang,Yong-Guan Zhu
Bacterial antibiotic resistance poses a threat to global public health. Restricted usage of antibiotics does not necessarily prevent its continued emergence. Rapid and sensitive screening of triggers, in addition to antibiotic, and exploring the underlying mechanism are still major challenges. Herein, by developing a homogeneous vacuum filtration-based bacterial sample fabrication enabling high surface-enhanced Raman scattering (SERS) reproducibility across multiple bacterial samples and negating interfering spectral variations from inhomogeneous sample geometry and SERS enhancement, SERS was employed to study heavy metal arsenic [As(V)]-mediated antibiotic resistance in a robust, sensitive, and rapid fashion. Independent and robust spectral changes representing phenotypic bacterial responses, combined with multivariate analysis, clearly identified that As(V) enhanced antibiotic resistance to tetracycline (Tet). Similar spectral alteration profile to As(V) and Tet indicated that cross-resistance, whereby As(V)-induced bacterial resistance simultaneously blocked Tet action, could account for the enhanced resistance. The sensitive, robust, and rich phenotypic profile provided by SERS, combined with additional advantages in imposing no need to cultivate bacteria and single-cell sensitivity, can be further exploited to evaluate resistance-intervening factors in real microbiota.
研究领域:
分析化学
·
微生物学
·
环境科学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）