JOURNAL OF HAZARDOUS MATERIALS
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2019
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IF 7.65
Yingqing Zhan,Shuangjiang He,Jiaxin Hu,Shumei Zhao,Guangyong Zeng,Mi Zhou,Guiyuan Zhang,Arijit Sengupta
Super-wetting MOFs@graphene hybrid has shown promising application for oil/water separation, due to high porosity, low density, and controllable wettability, however, achieving excellent stability and recyclability are found to be still challenging. In this study, sandwich-like UIO-66-F 4 @rGO hybrid was synthesized by immobilization of UIO-66-F 4 nanoparticles on rGO matrix, which featured the unique micro/nano hierarchy with hydrophobic characteristics. In order to realize the oil/water separation, as-prepared sandwich-like UIO-66-F 4 @rGO hybrid was applied as a potential candidate for constructing robust super-hydrophobic/super-oleophilic interfaces by using filter paper (FP) and melamine sponge (MS) as substrates. Typically, the surface modification of substrates can be easily achieved by simple dip-coating method, and interfacial adhesion between substrates and UIO-66-F 4 @rGO was enhanced by cross-linking of hydroxyl-fluoropolysiloxane (FPSO). Consequently, the super-hydrophobic/oleophilic UIO-66-F 4 @rGO/FP exhibited high contact angle of 169.3 ± 0.6° and was capable of separating various water-in-oil emulsions effectively. The flux and separation efficiency were 990.45 ± 36.28 Lm −2 h −1 and 99.73 ± 0.19 % driven by gravity, respectively. The super-hydrophobic/super-oleophilic UIO-66-F 4 @rGO/MS possessed selective oil absorption with absorption capacity of 26∼61 g/g depending on the viscosity of oils and continuous cleaning of oil spill. Furthermore, the UIO-66-F 4 @rGO composite could tolerate high/low temperature, corrosive solutions, and physical damage, displaying robust and stable super-hydrophobic/super-oleophilic interfaces for treating oily wastewater in harsh environments.
研究领域:
材料科学
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环境科学
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Hanhui Wang,Yi Zhang,Tingting Li,Zhiming Zhang,Libao An,Yeqi Zhang,Xinyu Sui
A hydrophobic metal-organic framework (MOF) nanofibrous membrane (NFM) with excellent comprehensive properties was successfully fabricated by a simple method. Benefiting from the excellent hydrophobicity, chemical stability, thermal stability and good structural fit of UiO-66-F 4 and polysulfone (PSF), the UiO-66-F 4 /PSF NFM has been directly prepared via co-electrospinning of UiO-66-F 4 and PSF without any additional modifications. Characterization with PXRD, FT-IR and XPS indicated that UiO-66-F 4 crystals were effectively incorporated into PSF fibers and their crystal structure was not destroyed. The obtained UiO-66-F 4 /PSF NFM exhibited improved hydrophobicity compared with the parent materials, even after the treatment with heat, acid or alkali solutions. Therefore, it was competent for separating different forms of oil-contaminated water, including oil-water mixture and water-in-oil emulsion, even in harsh conditions. In the case of hot oil-water mixture, UiO-66-F 4 /PSF NFM still showed a separation efficiency of about 99 % and an oil flux of 1036 L m −2 h −1 . More importantly, the separation efficiency remained relatively stable during 30 cycles of separation, indicating that UiO-66-F 4 /PSF NFM can meet the requirements of long-term use. In view of this, UiO-66-F 4 /PSF NFM had the potential to treat practical oily wastewater in harsh environments.
研究领域:
材料科学
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化学工程
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环境科学
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纳米技术
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Shiyin Zhao,Songyang Jiang,Yuxuan Xia,Fang Wang,Yujiao Li,Zhuoliang Liu,Xin Min,Cheng-an Tao
First piezo-responsive MOF heterostructure for mechanical Cr(VI) reduction. • F-modified MOF and ZnO loading synergistically boost piezoelectric response. • Efficient piezo-catalytic interface enables ultrafast Cr(VI) reduction. • 10 ppm Cr(VI) completely reduced to undetectable level within only 15 s. Hexavalent chromium (Cr(VI)) is highly toxic and carcinogenic; its reduction to Cr(III) remains the most viable remediation strategy. Piezoelectric catalysis, which converts mechanical energy into chemical energy via built-in electric fields, offers a sustainable route for pollutant degradation. However, the application of piezoelectric Metal-Organic Frameworks (MOFs) in heavy metal reduction remains largely unexplored. Herein, we report a strategy of fluorination combine with ZnO loading to construct piezoelectric MOF heterostructures for ultrafast Cr(VI) reduction. The optimized ZnO/UiO-66-F 4 completely reduced 10 ppm Cr(VI) to below detection limits within merely 30 s under sonication, substantially outperforming pristines. Systematic characterizations and DFT calculations revealed that fluorination depresses the conduction band to −0.91 V vs. NHE, establishing a type-II staggered band alignment with ZnO that synergizes with the piezoelectric field to drive vectorial charge separation, as corroborated by markedly reduced charge-transfer resistance and prolonged fluorescence lifetime with enhanced quantum yield. Mechanistic investigations further identified the interfacial Zn Zr dual-atom site as the true catalytic center, exhibiting the strongest Cr(VI) adsorption affinity and the lowest activation energy barrier for the rate-determining step. The catalyst demonstrated exceptional durability, retaining 98.2% removal efficiency after five cycles with negligible metal leaching. This work pioneers the application of piezoelectric MOFs in heavy metal remediation and establishes a molecular-level electronic modulation strategy for mechanical-energy-driven water purification. Piezoelectric ZnO/UiO-66-F 4 heterostructure was constructed via fluorine modification coupled with ZnO loading, demonstrating superior piezocatalytic performance for Cr(VI) reduction under ultrasonic vibration. Download: Download high-res image (138KB) Download: Download full-size image
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高影响因子
WOOD SCIENCE AND TECHNOLOGY
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2026
·Vol. 60
·期 5
·81
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IF 3.2
Huang Changzhu,Zhu Yaqin,Luo Yilong,He Bin,Wu Yunfei,Zhang Chunmei,Duan Gaigai,Han Xiaoshuai,Zhou Rongfei,He Shuijian,Jiang Shaohua
Efficient CO 2 capture remains challenging due to limited adsorption capacity and slow kinetics of conventional materials. Herein, we report a strong–weak acid modulation strategy for the in situ growth mesoporous UiO-66-F 4 within the aligned carbonized wood channels, yielding a hierarchical MOF–carbon composite denoted as meso-UiO-66-F 4 @CP. Dual-acid regulation enables highly uniform and controlled MOF growth under environmentally friendly aqueous conditions, avoiding the use of toxic organic solvents and ensuring a sustainable synthesis route. This composite effectively combines the macroporous framework of carbonized wood with the intrinsic micropores and mesopores of UiO-66-F 4 , establishing a hierarchical pore network that significantly enhances CO 2 diffusion, mass transport, and overall adsorption efficiency. Furthermore, the introduction of fluorinated linkers strengthens dipole–quadrupole interactions, generating abundant high-affinity adsorption sites specifically tailored for CO 2 molecules. Under the present experimental conditions, meso-UiO-66-F 4 @CP exhibits a CO 2 uptake of 38 cm 3 g⁻ 1 (approximately 1.70 mmol g⁻ 1 ) at 298 K and 1 bar, together with a measured adsorption rate of 0.085 mmol g⁻ 1 min⁻ 1 . This work provides a sustainable strategy for constructing hierarchical MOF–carbon composites with tailored pore structures and surface chemistry for CO 2 capture applications.
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FOOD CHEMISTRY
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2024
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IF 8.5
Yaqi Yu,Dilong Hong,Zeyu Zhu,Yuliang Jiang
Food safety issues are becoming increasingly prominent, raising public concern. Antibiotic pollutants, as a unique category, act like a double-edged sword. On one hand, they provide precise treatment for related diseases, but on the other hand, their excessive use or improper handling can lead to environmental contamination or entry into the biological chain. This makes it easy for living organisms to come into contact with and ingest these pollutants, leading to serious consequences. Among these antibiotics, Levofloxacin (LVF), a broad-spectrum antibacterial agent, effectively treats various bacterial infections but also causes severe problems due to its misuse. Therefore, developing a simple, fast, and efficient probe for detecting LVF is crucial for environmental protection and human safety. In this study, a novel UiO-66-F 4 fluorescent probe was synthesized. This probe demonstrated dual-channel detection of LVF through its inner filter effect (IFE) and chemical interactions, resulting in a visible color change from colorless to green. It exhibits good linear ranges at the fluorescence peaks of 494 nm (30–68 μM), with a detection limit of 0.1 μM. Based on its excellent detection performance, the probe was further applied for the quantitative determination of LVF in different types of food and beverages samples, yielding satisfactory results with recovery rates ranging from 93.4 % to 114.6 %. This probe offers a reliable means for the detection and evaluation of trace amounts of LVF in food.
研究领域:
分析化学
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环境科学
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食品科学
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材料科学
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DOI
PubMed
高影响因子
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