APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Guangjin Zhao,Xueming Wang,Chunxi Li,Hong Meng
Alkynyl carbon material (ACM) is a type of graphite derivative that is mainly composed of sp 2 and sp 1 hybrid carbons. It has a uniform distribution pore of 3–5 nm. Given its extreme thinness, high porosity and superhydrophilic surface, it is ideal for highly permeable and selective membranes. In this paper, a novel alkynyl carbon composite nanofiltration membrane was first prepared based on the coprecipitation of PDA, PEI and ACM. XPS, FTIR, SEM confirmed that the ACM was effectively compounded on the surface of the PAN substrate. CA and Zeta potential analyses show that the membrane surface is superhydrophilic due to itself superhydrophility and pore structures. The nanofiltration experiments showed that the water flux of the membrane is as high as 366 L m −2 h −1 MPa −1 , which also provides a good rejetion of organic dyes and natural organic matter (NOM) in water. For example, the permeation flux and rejection of methyl blue and humic acid are 360 L m −2 h −1 MPa −1 and 96% and 285 L m −2 h −1 MPa −1 and 94%, respectively. In addition, the membrane also showed strong running stability. This new membrane separation material has great potential application prospects in water purification and wastewater treatment.
研究领域:
材料科学
·
环境工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
Foods
·
2022
·Vol. 11
·期 9
·1287
·
IF 5.561
Xiaowei Huang,Ning Zhang,Zhihua Li,Jiyong Shi,Haroon Elrasheid Tahir,Yue Sun,Yang Zhang,Xinai Zhang,Melvin Holmes,Xiaobo Zou
In order to achieve rapid and precise quantification detection of carbendazim residues, surface-enhanced Raman spectroscopy (SERS) combined with variable selected regression methods were developed. A higher sensitivity and greater density of “hot spots” in three-dimensional (3D) SERS substrates based on silver nanoparticles compound polyacrylonitrile (Ag-NPs @PAN) nanohump arrays were fabricated to capture and amplify the SERS signal of carbendazim. Four Raman spectral variable selection regression models were established and comparatively assessed. The results showed that the bootstrapping soft shrinkage-partial least squares (BOSS-PLS) method achieved the best predictive capacity after variable selection, and the final BOSS-PLS model has the correlation coefficient (RP) of 0.992. Then, this method used to detect the carbendazim residue in apple samples; the recoveries were 86~116%, and relative standard deviation (RSD) is less than 10%. The 3D SERS substrates combined with the BOSS-PLS algorithm can deliver a simple and accurate method for trace detection of carbendazim residues in apples.Keywords:apple;carbendazim;surface-enhanced Raman spectroscopy (SERS);Ag-NPs @PAN-nanohump arrays;bootstrapping soft shrinkage-partial least squares (BOSS-PLS)
研究领域:
食品安全
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2025
·Vol. 40
·期 4
·905-913
·
IF 1.1
Pang Zengyuan,Gao Pengxiang,Meng Haonan,Cheng Zhenyu,Li Shen,Zhu Yanan
One-dimensional titanium dioxide (TiO 2 ) whiskers with controllable aspect ratios were synthesized by molten salt method adopting anatase TiO 2 nanoparticles as precursor, sodium chloride (NaCl) and dibasic sodium phosphate (Na 2 HPO 4 ) as medium. The particle size of TiO 2 nanoparticles and ratio of precursor and medium that can help to generate high aspect ratio TiO 2 whiskers were studied and selected. Light-colored antimony-doped tin oxide @ titanium dioxide (ATO@TiO 2 ) conductive whiskers were prepared by coating ATO on TiO 2 whiskers through coprecipitation then. Finally, the ATO@TiO 2 light-colored conductive whiskers were dispersed in polyacrylonitrile (PAN) to fabricate light-colored conductive fibers. The experimental results show that the ATO@TiO 2 whiskers exhibits ideal whiteness and conductivity with 65.5 Wb and 106 Ω·cm, respectively, and the resistivity of conductive fibers was 6.07×10 6 Ω·cm with 15wt% whisker content.
研究领域:
材料科学
·
纳米技术
·
无机合成
·
高分子科学
·
材料导电性能
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2023
·
IF 3.2
Peng Wei,Yang Sui,Bensheng Zhu,Xiaoyu Meng,Qiong Zhou
Due to its adaptable performance and industrial manufacturing, sulfonated poly ether ether ketone (SPEEK) is suitable for proton exchange membrane (PEM). Organica-inorganic composite membrane was suggested as a way to further enhance its performance. By combining different weights of titanium (IV) oxide acetylacetonate (TiOacac) with polyacrylonitrile (PAN), a PAN/TiOacac solution was created that could then be used to create PAN/TiOacac nanofiber . After the nanofiber has been calcined, TNT-10, TNT-30, and TNT-50 can be produced. Following the incorporation of these three types of TNT into the SPEEK matrix, the solution-casting approach allowed for the simple development of the TNT/SPEEK membrane. The composite membrane of 1%TNT-10/SPEEK and 1%TNT-50/SPEEK was discontinuous and inefficient due to the loose and abundant titanium dioxide in TNT-10 and TNT-50, respectively. While it was compact for TNT-30 with premium performance, so 1%TNT-30/SPEEK would form continuous proton transport channels in PEM and have an interaction between TNT-30 and SPEEK matrix, which was confirmed by FTIR , TEM and XPS. To create a high-performance PEM, it is necessary to develop a continuous proton transport channel.
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
POLYMER
·
2021
·
IF 4.43
Ting-Ting Zhang,Peng Yu,Zheng-Min Zhang,Zheng-Ying Liu,Ming-Bo Yang,Wei Yang
A facile and versatile route is demonstrated to fabricate nanosheets-assembled porous polymer microspheres via the ingenious combination of polymer crystallization promoted by high temperature and vapor-induced phase separation (VIPS). Water vapor which permeates into the polymer solution promotes the precipitation of hydrophobic polyacrylonitrile (PAN). High temperature promotes PAN crystallization and assembling into hierarchical porous microspheres (about 1–3 μm). Interestingly, the addition of polyethyleneimine (PEI) functioning as nucleation sites and steric stabilizer can also promote PAN crystallization owing to their strong interactions. In this protocol, polymer composition , preparation temperature, solvent type and solution concentration are critical to determine the final morphologies of porous microspheres. This versatile strategy for fabricating nanosheets-assembled porous microspheres can be extended to other semi-crystalline/crystalline polymers, which could hopefully be applied in drug delivery, energy storage, separation,and purification, etc.
研究领域:
材料科学
·
聚合物化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Yingqing Zhan,Ximin Chen,Ao Sun,Hongshan Jia,Yucheng Liu,Lingli Li,Yu-Hsuan Chiao,Xulin Yang,Fei Zhu
Membrane separation technology has potential for purifying emulsified oily wastewater. However, the oils, soluble organic substances, and microorganisms can cause complex membrane fouling problems, thereby reducing the separation efficiency and service life. Herein, a highly permeable and multiple-antifouling composite membrane was prepared using porous PAN fibrous mat as support backbone for the assembly of Ag-decorated Bi 2 O 3 @ 3D MXene Schottky heterojunction and hydrophilic TA as the adhesive. The unique arrangement of 3D MXene heterojunction and hydrophilic functionalization effectively broke through the limitation of separation flux and synergistically enhanced the anti-fouling performance of membrane. Such fibrous composite membrane achieved an exceedingly high permeability (2717–3328 L·m −2 ·h −1 ) for various emulsified oils, while ensuring excellent oil/water emulsion retention rate (99.59%) and good cycle stability. Meanwhile, the composite membrane displayed favorable photocatalytic degradation performance toward degrading MeB (96.1%) and antibacterial ability. Furthermore, the MD simulation and free radical trapping experiments were carried out to unravel the molecular interactions during the separation process and the photocatalytic mechanism of composite membrane, respectively. Overall, the combination of photocatalytic self-cleaning, anti-oil adhesion, and antibacterial effect renders the membrane high permeability and multiple-antifouling performance, which provides a new strategy for dealing with complex oily wastewater in petrochemical industry .
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xukang Han,Yuanhang Zhang,Jinhu Hu,Jiao Liu,Mingliang Ma,Yuhao Feng,Xiyao Wang,Guoxu Sun,Wei Gao,Yonglei Chi,Zihan Guo
With the advancement of wireless communication and electronic equipment , microwave absorption materials (MAMs) have more and more broad applications in related fields. Ti 3 C 2 T x -MXene with unique two-dimensional structure and excellent dielectric properties is often used as a precursor of nano-TiO 2 , which is a potential MAMs. Carbon nanofibers , as a one-dimensional material, have great electrical conductivity and can form interconnected three-dimensional conductive networks. In this study, Ti 3 C 2 T x -MXene was prepared by in-situ HF etching method, and further combined with the benefits of Co, Ce metals, and carbon nanofibers. Co/CeO 2 /TiO 2 /CNFs were prepared via a facile technique for electromagnetic microwave (EM) absorption, exhibiting excellent EM absorption performance due to the synergistic effects of dielectric and magnetic properties . The minimum reflection loss (RL min ) and effective absorption bandwidth (EAB) reache −63.35 dB (11.2 GHz) and 3.6 GHz (9.5–13.1 GHz), with a thickness of only 2.35 mm and a filling rate of 30 wt%, while the maximum EAB reaches 5.4 GHz (12.4–17.8 GHz) with a thickness of 1.82 mm, covering nearly the entire Ku band. By offering a novel strategy to the creation of brand-new, high-performance MAMs based on 1D carbon nanofibers with dielectric/magnetic synergy, this work is believed to support the development of upcoming MAMs.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2024
·
IF 4.1
Li Ying,Pan Chen,Gan Feng,Lin Zhi-Xun,Yu Jin-Chao,Wei Zhen-Zhen,Zhao Yan
Electrospun nanofibrous separators, despite lacking superior mechanical strength, have gained widespread attention with high porosity and facile processing. Herein, utilizing the fact that thermal imidization temperature of poly(amic acid) (PAA) into polyimide (PI) coincides with the pre-oxidation temperature of polyacrylonitrile (PAN) into carbon fiber, we proposed a new cross-electrospinning strategy to obtain a composite nanofibrous separator (PI/oPAN) randomly interwoven by PI and pre-oxidized PAN (oPAN) nanofibers, via synchronously electrospinning the PAA and PAN onto the same collector and then heat-treating for 2 h at 300 °C. The resultant PI/oPAN separator was able to preserve high porosity (71.7%), electrolyte wettability and thermal stability of PI nanofibrous membrane, and surprisingly exhibited high mechanical strength, being 3 times of PI, which mainly because of the numerous adhesion points generated by the melting of PAN in the pre-oxidation process. Meanwhile, the polar groups of oPAN and 3D fibrous network enhanced the PI/oPAN separator’s ionic conductivity and Li + transference number, rendering the corresponding cell with more stable cycling performance than cells assembled with pure PI, PAN or commercial PP separator. Therefore, this work might provide a new avenue for the ongoing design and further development of LIB separators capable of high safety and high performance.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Xingang Liu,Qingfu Wang,Jihai Zhang,Huibin Guan,Chuhong Zhang
A novel, high-yield, one-step approach was developed to prepare MoS2/graphene nanosheets (GNS) by exfoliating commercial bulk MoS2 and graphite via solid-state pan-milling. We found that pan-milling could be used to co-exfoliate MoS2 and graphite into few-layer MoS2/GNS heterostructures, which could improve the electronic conductivity between the MoS2 layers and could decrease the Li+ diffusion barrier at the MoS2/graphene interfaces. As an anode material in lithium-ion batteries (LIBs), the MoS2/GNS milled for 10 cycles, exhibited a high reversible capacity of about 654 mAh g–1 after 150 cycles at 200 mA g–1, and had excellent rate capability (418 mAh g–1 at 2 A g–1) compared to commercial MoS2/graphite. The method described in this work provides a simple and ecofriendly strategy for the preparation of two-dimensional materials and composites by exfoliating commercial crystalline materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Lin Zhou,Zikang Hou,Xiangze Kong,Shuangjiang Pan,Bingcheng Liu,Tao Zhao,Xiaoya Jiang,Zhiqiang Shi,Jing Wang
Cellulose-based separators offer sustainability and renewability, yet their poor mechanical strength and large pore size often result in insufficient cycling stability and safety risks in sodium-ion batteries (SIBs). In this work, a sandwich-structured separator (LF-ALO), consisting of a cellulose-based paper (LF) core coated on both sides with electrospun polyacrylonitrile (PAN)/aluminum oxide (Al 2 O 3 ) layers. Compared with LF, LF-ALO exhibits elevated mechanical strength (19.7 MPa), and markedly improved electrolyte wettability (316 %) owing to the robust interconnected fibrous network constructed by PAN and Al 2 O 3 , which facilitate uniform Na + transport and reduce short-circuit risks by optimizing the pore structure of LF. LF-ALO also achieves a high Na + transference number (t Na+ = 0.85), reducing internal resistance and enhancing charge-discharge efficiency. A half-cell with NaNi 1/3 Fe 1/3 Mn 1/3 O 2 (NFM) cathode delivers 130 mAh g −1 at 0.1C, retains 95.86 mAh g −1 after 100 cycles, and demonstrates superior rate capability. The high mechanical strength, uniform pore structure, and efficient Na + transport of LF-ALO enhance long-term cycling and contribute to safe operation, highlighting cellulose-based composites for next-generation SIBs.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2026
·
IF 10.7
Shanshan Sun,Yurong He,Tianqi Tang,Siyu Hui
While semiconductor-based photocatalysis presents a promising avenue for CO 2 reduction, the application of conventional TiO 2 is restricted by its limited light absorption, short photogenerated charge carrier lifetime, and poor CO 2 adsorption capability. To overcome these constraints, we constructed multifunctional Ag/Cu-TiO 2 /graphitic-phase polyacrylonitrile (g-PAN) composites. In this system, g-PAN functions as a robust support for Ag/Cu nanoparticle-loaded TiO 2 fibers synthesized via electrospinning and heat treatment. UV–Vis NIR DRS analysis reveals synergistic light harvesting where the localized surface plasmon resonance of Ag/Cu nanoparticles extends absorption into the near-infrared and g-PAN doubles the intensity by trapping photons within nanocavities. Beyond these optical benefits, g-PAN enhances CO 2 adsorption and accelerates charge transfer. Consequently, the Ag/Cu-TiO 2 /g-PAN composite achieves a CO evolution rate of 11.82 mmol/g/h under simulated solar irradiation, representing a twice increase compared to the Ag/Cu-TiO 2 counterpart. As evidenced by Electrochemical Impedance Spectroscopy and instantaneous photocurrent response, g-PAN acts as an electronic bridge that significantly reduces the resistance to photogenerated charge migration. This study provides novel insights into designing highly efficient composite photocatalysts for sustainable CO 2 conversion, contributing to the advancement of cleaner production and green technologies.
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Run-Ze Zhu,Lu-Lu Li,Yang-Sheng Tian
The design and fabrication of high-efficiency, cost-effective multifunctional air nanofiber membranes are critically important for addressing the growing challenge of global particulate matter pollution. This study presents a structural optimization strategy based on the incorporation of porous functional nanoparticles to develop high-performance air filtration membranes. By precisely controlling the ZIF-67 loading ratio and spinning time, a hierarchical fiber network with a bimodal diameter distribution was constructed, enabling stable immobilization of the porous nanoparticles within the fibrous matrix. The resulting composite membrane achieved filtration efficiencies of 99.69% for PM 2.5 and 99.72% for PM 10 , with a low pressure drop of only 72 Pa. Its quality factor is 1.8 times higher than that of the pure PAN membranes. The membrane demonstrates excellent air permeability, UV resistance, and long-term stability. It maintains a filtration efficiency above 97.12% at a high flow rate of 50 L/min, with no noticeable performance decline after 30 days of continuous use. This fabrication method offers advantages such as simple operation, controllable processes, and scalability for mass production. The resulting composite membrane effectively balances filtration efficiency and breathability, making it a promising filter material for personal protective equipment and indoor air purification systems.
✓ 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）