ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Mengxue Wang,Lingsha Li,Haipeng Yan,Yong You,Xiaohong He,Zhongxiang Bai,Ying Li,Kui Li,Xulin Yang,Pan Wang
Separating oil-water emulsions in harsh conditions poses a substantial challenge for filtration membrane systems. In response, this study presented a continuous electrospinning technique to fabricate a robust bifacial composite membrane. Two types of high-performance polyarylene ether nitrile (PEN) polymers, PEN-BPA and PEN-B/P, with different wettability, are employed to construct the AB bifacial structure. Further, the A-side is modified with hydrophilic polydopamine (PDA) and antibacterial silver nanoparticles (Ag NPs) to prepare Ag@PDA/PEN-BPA, while the B-side is altered with photocatalytic titanium dioxide nanoparticles (TiO 2 ) to prepare TiO 2 /PEN-B/P. The resulting Ag@PDA/PEN-TiO 2 /PEN-B/P bifacial membrane demonstrates remarkable photocatalytic degradation efficiency, particularly for MB, reaching 99.8% degradation efficiency. Moreover, the permeation flux and oil-water emulsion separation rejection rate of the membrane reach 5180.34 L m − 2 ·h −1 and 99%. The PEN substrates are not only used to construct the AB bifacial structure but also to enhance the membrane's toughness and durability, ensuring stability in high-temperature and corrosive environments, with a rejection rate reaching 99% after 10 reuse cycles. Furthermore, integrating Ag NPs imparts excellent antibacterial properties to the membrane, sustaining a 99.99% antibacterial rate after oil-water emulsion separation, photocatalytic dye degradation, and exposure to high-temperature NaCl immersion. This study offers novel insights into multifunctional water treatment materials in harsh environments.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2018
·Vol. 28
·期 30
·1801527
·
IF 13.325
Baocang Liu,Huan Li,Bo Cao,Jianing Jiang,Rui Gao,Jun Zhang
Development of highly active and stable electrocatalysts is a key to realize efficient hydrogen evolution through water electrolysis. Here, the development of a 3D self-supported integrated electrode constituting few layered N, P dual-doped carbon-encapsulated ultrafine MoP nanocrystal/MoP cluster hybrids on carbon cloth (FLNPC@MoP-NC/MoP-C/CC) is demonstrated. Benefiting from novel structural features including fully open and accessible nanoporosity, ultrasmall size of MoP-NCs on MoP-Cs as well as strong synergistic effects of N, P dual-doped carbon layers with MoP-NCs, the FLNPC@MoP-NC/MoP-C/CC as a 3D self-supported binder-free integrated electrode exhibits extraordinary catalytic activity for the hydrogen evolution reaction (HER) with extremely low overpotentials at all pH values ( j = 10 mA cm −2 at η = 74, 106, and 69 mV in 0.5 m H 2 SO 4 , 1.0 m PBS, and 1.0 m KOH electrolytes, respectively). To the best of our knowledge, the ultrahigh electrocatalytic performance represents one of the best MoP-based HER electrocatalysts reported so far. Additionally, few layered N, P dual-doped carbon can effectively prevent MoP-NC/MoP-C from corrosion, making the FLNPC@MoP-NC/MoP-C/CC exhibit nearly unfading stability after 50 h testing in acidic, neutral, and alkaline media, which shows great promise for electrocatalytic water splitting application.
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高影响因子
AQUATIC TOXICOLOGY
·
2025
·
IF 4.3
Liu Yang,Xue Tang,Yongsheng Zhou,Shiniu Dai,Kexin Liu,Lina Shi,Xinli Wen
A common tire additive of N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) is frequently detected in freshwater. To date, the toxicity of 6PPD to aquatic organisms has mainly been based on partial life-cycle test results. However, it remains unclear whether this approach leads to an underestimation of the true environmental risk of 6PPD. Here, the effects of environmentally relevant or greater concentrations of 6PPD on the reproduction and growth of Daphnia magna were specifically compared between day 21 and the day all the maternal daphnia died, with the underlying toxic mechanisms of 6PPD also explored. 6PPD at environmental or near-natural water concentrations (5.68 and/or 9.20 µg/L) significantly decreased the total number of offspring and net reproductive rate after whole-life-stage exposure. However, such adverse effects were not observed on day 21, indicating that environmental levels of 6PPD exerted reproductive toxicity on D. magna , and short-term exposure may underestimate the environmental risk of 6PPD. Elevated malondialdehyde levels in the 5.68, 9.20 and 44.58 µg/L treatment groups, coupled with reactive oxygen species (ROS) emerging as the dominant contributors to the biomarker response index, indicated that ROS overproduction induced by 6PPD triggered lipid peroxidation despite antioxidant capacity was enhanced. Downregulation of the vitellogenin expression in D. magna exposed to 5.68, 9.2 and 44.58 µg/L 6PPD, likely resulting from competitive binding to ecdysteroid receptor based on molecular docking and molecular dynamics simulation, might compromise nutrient provisioning during embryogenesis. Coupled with oxidative stress, these dual mechanisms appeared to mediate 6PPD-induced reproductive toxicity.
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PubMed
高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 5
·1-12
·
IF 6.232
Dong Wenjuan,Wang Ruiping,Gong Xiaojuan,Liang Wenting,Fan Li,Song Shengmei,Dong Chuan
A far-red fluorescence “off-on” sensing strategy is described for sequential ratiometric determination of Cu 2+ and L-histidine (L-His) based on fluorescence resonance energy transfer (FRET) system. N,S,P co-doped carbon dots (N,S,P-CDs) and N-acetyl-L-cysteine functionalized gold nanoclusters (NAC-AuNCs) are used in the FRET system, which serve as energy donor and acceptor, respectively. After adding NAC-AuNCs into the solution of N,S,P-CDs, the fluorescence of N,S,P-CDs is effectively quenched, while the far-red fluorescence of NAC-AuNCs appears. Cu 2+ can decrease fluorescence of NAC-AuNCs, and then L-His can effectively recover the fluorescence of NAC-AuNCs. The possible reason is that the stronger affinity between Cu 2+ and L-His can pull Cu 2+ away from the surface of NAC-AuNCs. Through it all, the emission intensity of N,S,P-CDs remains nearly constant, so the ratio of fluorescence intensities at 485 and 625 nm exhibits a linear correlation to the Cu 2+ and L-His concentration, respectively. The sensing platform shows good selectivity towards Cu 2+ and L-His with a linear range of 0.65–26.58 μM and 3.13–56.25 μM and determination limits of 0.50 μM and 0.374 μM, respectively. The proposed method has been successfully used for Cu 2+ and L-His determination in real samples with satisfying results.
Graphical abstract
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高影响因子
危险品化学品经营许可证（带存储）