JOURNAL OF MATERIALS SCIENCE
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2020
·Vol. 55
·期 25
·11310-11324
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IF 3.553
Ren Hai-Tao,Han Jing,Li Ting-Ting,Liang Yu,Jing Meng-Zhen,Jiang Si-Meng,Lin Jia-Horng,Lou Ching-Wen
Visible light response PAN@Ag–Ag 2 O/TiO 2 (PAN@AT) nanofibers with different mass ratios between Ag–Ag 2 O and TiO 2 were synthesized via a facile electrospinning technique and pH-induced precipitation reaction. X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscope analyses manifest the formation of Ag–Ag 2 O/TiO 2 heterojunctions, and Ag–Ag 2 O/TiO 2 nanoparticles are evenly distributed on PAN nanofibers. The fabricated nanofibers show a highly photocatalytic performance toward As(III) oxidation under visible light, and the conversion is 92.1% after 120-min reaction at pH 5.0 in the system of PAN@AT4. Furthermore, conversion of As(III) can retain 88.6% of the original activity after repeating four cycles, indicating the good recyclability of PAN@AT4 nanofibers. Quenching experiments and electron spin resonance spectra analysis further demonstrate that the predominate active species for As(III) oxidation by PAN@AT4 are h + and · OH. The enhanced catalytic activity of PAN@AT4 is therefore ascribed to the formation of Ag–Ag 2 O/TiO 2 heterojunctions on PAN surface and the efficient separation of photoinduced electron–hole pairs. This study provides a new material to oxidize reducing pollutants [such as As(III)] and also sheds light on the fabrication of recyclable photocatalysts.
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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光化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
·
IF 20.2
Yeke Zhang,Liheng Niu,Zenan Li,Ting Yang,Yuqing Liu,Zhenhui Kang
Using seawater for photocatalytic hydrogen production is always a highly promising direction. However, traditional powdered photocatalysts encounter challenges like ion interference and difficulty in reuse. To address these issues, we have combined the photocatalyst ZnIn 2 S 4 (ZIS) with a polymer (PAN) using electrospinning technology to produce a composite photocatalytic ZIS/PAN nanofiber membrane. In aqueous solution, the ZIS/PAN nanofiber membrane achieves a maximum hydrogen evolution rate of approximately 1836 μmol/g/h, which is 3.37 times that of ZIS particles. Additionally, cyanide groups on PAN fibers can capture a small portion of photogenerated electrons, which then adsorb ions from seawater, reducing their impact on the photocatalyst and demonstrating excellent seawater hydrogen production performance. At specific ion concentrations , the membrane's activity is 20 % higher than in aqueous solution. Moreover, it overcomes the limitations of powdered photocatalyst structures, enabling device integration that facilitates easy recovery and reuse.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Haitao Meng,Xuemei Li,Caijuan Wang,Haijun Meng,Shouzhu Li
The discharge of industrial wastewater and frequent oil spills have caused serious environmental degradation. There is an urgent need for effective oil-water separation technology to solve the problems of ecological restoration and pollution control. This study breaks through the limitations of traditional multi-step and surface modification and proposes a one-step green manufacturing strategy. The PAN matrix and SiO 2 nanoparticles are covalently linked through the -NH 2 /-C N of the bifunctional APTES molecular bridge and the Si-O-Si bond network to achieve stable interfacial anchoring. Meanwhile, during the process of preparing the separation membrane by electrospinning, hydrophobic modification and particle immobilization were completed simultaneously to construct a chemically bonded hierarchical micro/nano rough structure. This method does not require post-processing and significantly improves manufacturing efficiency and interface stability. The experimental results show that the membrane has a dual-mode separation capability, namely gravity-driven separation and continuous operation driven by the adsorption pump. It has a high separation flux and efficiency for various types of oil-water mixtures. Meanwhile, the membrane can effectively separate the water-in-oil emulsion stabilized by surfactants, with a separation efficiency exceeding 98.2%, a flux exceeding 611 L m -2 h -1 , and a flux loss of only 6.92% after 10 cycles. It is worth noting that this membrane has continuous operational durability, maintaining an efficiency of over 97% in the simulation of industrial emulsion separation (15-minute test) and a flux recovery rate of over 94% after ethanol washing. In addition, the material has excellent environmental tolerance and holds great potential in industrial applications and oil-water separation under extreme conditions.
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
CONSTRUCTION AND BUILDING MATERIALS
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2022
·
IF 7.693
Denghui Ren,Yaseen Muhammad,Youchao Chen,Yu Liu,Canyun Mao,Susu Xing,Ruinan Pei,Zhenxia Zhao,Jing Li
In this study, a surface modified polyacrylonitrile fiber (KF-PAN) with a fish-scale whisker-like biomimetic hierarchical structure was successfully prepared via in situ competition effect of Fenton reaction. The modified fibers were used as secondary modifiers to prepare fiber-reinforced styrene–butadienestyrene (SBS) block copolymers and rubber powder (RP) modified asphalt binders (KF-PAN/SBS/RP). Energy dispersive spectroscopy, scanning electron microscopy, and atomic force microscopy analyses revealed the successful construction of bionic hierarchy on the fiber surface, and confirmed rough surface of the KF-PAN fibers. The hierarchical structure of the fiber surface acted as a buffer in the asphalt and strengthened the mutual interaction of the fiber and asphalt. Dynamic rheometer shear and strip-tensile tests showed that the KF-PAN/SBS/RP modified asphalt exhibited better viscoelasticity, rutting resistance, and tensile properties than the PAN/SBS/RP modified asphalt. The linear amplitude sweep test showed that KF-PAN/SBS/RP modified asphalt had better fatigue resistance. Thermogravimetric analysis tests indicated that the surface bionic structure of KF-PAN fibers boosted thermal stability of the fibers, which in turn enhanced the thermal stability of KF-PAN/SBS/RP modified asphalt. Fluorescence microscopy analysis showed that incorporating KF-PAN fibers improved the SBS and RP microstructure inside the asphalt, forming a good mesh structure, and alleviating the stress concentration phenomenon in SBS/RP asphalt under external traffic load.
研究领域:
材料科学
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土木工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Wenjun Qu,Huili Wang,Guodong Li,Zhaoping Song,Xiaona Liu,Fengshan Zhang,Wenxia Liu,Dehai Yu,Dandan Ji
The removal of heavy metal ions and medical antibiotics from wastewater is crucial for environmental protection and human health. However, the adsorption capacities and reusability of previously reported adsorbent materials have been insufficient for efficient and sustainable wastewater treatment . In this study, we present a composite material, UiO-66-AMP@PAN, synthesized from metal-organic frameworks (MOFs) and polyacrylonitrile (PAN), which exhibits superior adsorption properties and reusability. The material demonstrates excellent adsorption capacities for heavy metal ions Pb(II) and Cr(VI) as well as the antibiotic tetracycline hydrochloride (TCH), among which the maximum adsorption capacities for Pb(II)(pH=7) and Cr(VI)(pH=5) and antibiotic tetracycline hydrochloride (TCH) (pH=9) were 455.8 mg/g, 442.08 mg/g and 405.92 mg/g, respectively. The adsorption efficiency of UiO-66-AMP@PAN as an adsorbent for adsorbing Pb(II)(pH=7) and Cr(VI)(pH=5) and the antibiotic tetracycline hydrochloride (TCH) (pH=9) remained above 90% even after ten consecutive cycles. The performance of UiO-66-AMP@PAN as an adsorbent has remained unchanged across multiple adsorption-desorption cycles, demonstrating its potential for long-term use in wastewater treatment applications. This innovative approach paves the way for the development of more efficient and environmentally friendly adsorption materials to address the challenges posed by heavy metal ions in wastewater and medical antibiotics.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2019
·Vol. 43
·期 9
·3913-3920
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IF 3.069
Mengxin Zhang,Meishan Li,Wangui Wu,Junkun Chen,Xiuling Ma,Zhangjing Zhang,Shengchang Xiang
In this work, ZIF-67 decorated with polyacrylonitrile (PAN) was electrospun to obtain composite ZIF-67/PAN nanofibers, which were used to construct C-ZIF-67/PAN-800 via one-step pyrolysis at 800 °C under a N2 atmosphere. Then, a strategy for constructing a sensor for the simultaneous determination of hydroquinone (HQ) and catechol (CC) was proposed using a C-ZIF-67/PAN-800-modified glass carbon electrode (GCE). Additionally, C-ZIF-67-800 was fabricated as a reference through the pyrolysis of ZIF-67 in the absence of PAN at 800 °C. C-ZIF-67/PAN-800/GCE showed much better electrochemical activity for the simultaneous determination of HQ and CC than C-ZIF-67-800/GCE. Under optimal conditions, C-ZIF-67/PAN-800/GCE exhibited a wide detection range of 1–120 μM and 1–200 μM for HQ and CC, respectively, and both detection limits were 1.0 μM. Our work proves that the electrochemical properties of MOF-derived porous carbon materials can be tuned by electrospinning.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 34
·15629-15636
·
IF 3.591
Bin Wang,Yuzhe Zhang,Wen Sun,Xudong Zheng,Zhongyu Li
The recycling of rare-earth elements from wastewater has important economic and environmental benefits. In this study, cellulose nanocrystals used as a liquid crystal template and tetraethyl orthosilicate (TEOS) used as a silicon-source precursor drive were self-assembled into thin-film materials via a sol–gel method, and then calcined into carbon-based materials at high temperatures in a nitrogen atmosphere to improve the mechanical properties of the films and increase surface areas. The 3-aminopropyl triethoxysilane and 1-(2-pyridylazo)-2-naphthol were introduced into the surface of carbon-based thin-film materials by chemical grafting to improve the adsorption properties of rare-earth elements. For heavy rare-earth ions, the adsorption performance of the carbon-based silicon membrane was better as compared to the light rare-earth ions. At pH = 7, the maximum adsorption capacity of the carbon-based silicon membrane and the adsorption efficiency can reach more than 90%. The regeneration performance test indicated that the carbon-based silicon membrane can be reused many times. In general, it is an environmentally friendly, efficient, and non-toxic new adsorption material for heavy rare-earth ion adsorption.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
·
IF 6.2
Jing Tian,Yanguang Zhang,Feng Qian,Meijing Cao,Yuanhang Cheng,Jiarun Li,Minge Tian,Weibing Li,Lei Wang
The low recovery efficiency and secondary pollution of traditional powder photocatalysts are the main problems restricting the practical application of photocatalysis technology. Therefore, PAN/BiInOCl membrane photocatalysts were prepared by simple electrospinning technology, and the swash plate photocatalytic reactor was designed according to the utilization characteristics of the membrane photocatalyst. By cooperating membrane photocatalyst with the swash plate photocatalytic reactor, the rapid and effective photocatalytic degradation of RhB simulated wastewater by PAN/BiInOCl membrane photocatalyst can be achieved, and the rapid and non-destructive recovery of photocatalysts can be realized. PAN/BiInOCl-3 membrane photocatalyst with the best photocatalytic degradation efficiency can realize the complete degradation of RhB within 30 min and has good stability under the actual sunlight irradiation. Radical trapping experiments confirmed that hydroxyl radicals and holes play a major role in the photocatalytic degradation of RhB. The preparation of PAN/BiInOCl membrane photocatalyst and the design of swash plate photocatalytic reactor lay a theoretical foundation for the design and preparation of efficient membrane photocatalyst and the application of photocatalytic technology in wastewater treatment.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Tianchan Jia,Shengbin Cao,Xiaosong Liu,Lei Li,Kai Dong
Traditional power technologies are constrained by size and endurance, whereas nanogenerators offer lightweight, environmentally friendly, and sustainable energy solutions. In this study, an MXene/BaTiO3/PAN composite nanofiber membrane was developed using electrospinning technology. The incorporation of BaTiO3 nanoparticles and two-dimensional MXene flakes significantly enhanced the piezoelectric properties of the PAN matrix, resulting in an output voltage of 6.45 V and a current of 308 nA-approximately four times higher than that of pure PAN. Notably, piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs) were integrated into one single device, addressing the low output and stability issues of traditional PENGs. The integrated device achieved a higher stable output voltage of 12–14 V and retained stable performance over 5000 cycles. Moreover, the MXene component endowed the nanofiber membrane with excellent photothermal properties, achieving a temperature rise of 42 °C under 1 W cm−2 solar irradiation. This demonstrates its potential for human joint photothermal therapy and underscores its value for developing high-performance self-powered sensors and wearable electronic devices.
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产品关联
DOI
高影响因子
Analytical Methods
·
2024
·
IF 2.7
Yuting Luo,Yiwei Sun,Haoxiang Wang,yuyang He,Yuxun Zhang,Hailu Lei,Hong Yang,Jinhao Wei,Dongpo Xu
C-ZIF-67@PAN nanofiber was prepared as active materials for ampicillin (AMP) detection. MOF materials can provide larger specific surface area and more binding sites. The PAN fiber can make ZIF-67 orderly arranged, further carbonization, enhance the conductivity of the material, and make the response more sensitive. The gold nanoparticles were incorporated into the material, and the aptamer was closely combined with the material by using the Au-S bond. And further enhance the conductivity of the material. Under optimized conditions, the sensor has a wide detection range (0.001~100 μM) and a low detection limit (0.67 nM). In addition, the C-ZIF-67@PAN@Au@Apta nanofiber sensor was successfully applied to AMP residues in milk samples with a recovery rate of 92.77 % ~ 101.95 %.
研究领域:
分析化学
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纳米技术
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食品安全
·
生物传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL PROCESSING TECHNOLOGY
·
2023
·
IF 7.5
Qiang Le,Zan Liu,Zhilin Cheng
In this work, a novel core-shell nanostructured coaxial nanofiber membranes (CFMs) were successfully produced by the coaxial electrospinning . The structure and composition of CFMs were probed by a series of characterizations. The results demonstrated that the CFMs were comprised of the versatile core-shell structure nanofibers, therein Cu(I)/UIO-66 scattered in the shell layer and HNTs dispersed in the core layer. As applied in the selective adsorption desulfurization , the Cu(I)/UIO-66 embedded on the surface of the nanofiber undertook the adsorption active sites, while HNTs in core layer served as enhancing the mechanical performance of PAN nanofibers. The CFMs had the superior adsorption performance in the batch adsorption (maximum:40.14 mg·g −1 ) and fixed-bed adsorption (maximum: 47.43 mg·g −1 ) capacities for benzothiophene (BT) from fuel oil, respectively. Furthermore, due to having the robust mechanical performance, the CFMs exhibited the preferable recycling adsorption and mechanical stability . The adsorption mechanism of BT molecules on CFMs was explored by the kinetics, isotherms and thermodynamic models , indicating the existence of the synergistic effect of physical adsorption and chemical adsorption.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shuai Ran,Ji Qi,Xufeng Dong,Hao Huang,Min Qi,Wenjing Dong,Penghui Zhao,Zenghui Zhao,Jingyuan Yang
Controllable preparation of cross-linked mesoporous carbon materials on a large scale remains challenging. In the present work, a simple NaCl-assisted pyrolysis strategy is proposed here to efficiently convert closed pores into open pores in the pyrolysis products of 2-methylimidazole zinc salt nanoparticles/polyacrylonitrile (ZIF-8/PAN) electrospun fibers to prepare 1D cross-linked mesoporous N-rich carbon-based oxygen reduction reaction (ORR) electrocatalyst. The total specific surface area of micropores and mesopores was significantly increased from 162 m 2 /g to 1069 m 2 /g (mesopores: 704 m 2 /g). The ORR catalytic activity of open pore was superior to that of closed pore with more positive onset potential (0.96 vs . 0.85 V) and half-wave potential (0.79 vs . 0.72 V), larger limiting current density (5.23 vs . 3.62 mA cm −2 ) and electron transfer number (3.89 vs . 3.15). Such enhanced performance was attributed to the transformation from closed to open pores which greatly improved the mass transfer performance and the number of active sites.
研究领域:
材料科学
·
电化学
✓ 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）