ACS Applied Polymer Materials
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2025
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IF 4.7
Yubo Ren,Shuaijie Li,Jingjun Dong,Zhihui Zhao,Zunyuan Wang,Guoxin Wang,Xiaoming Li,Weichao Chen
The urgent need for efficient wound dressing requires comfortability, reasonable humidity, and anti-inflammatory and pathogen anti-infectivity properties. Herein, the PET micronanofiber pads loaded with forsythin (FT) are successfully designed and prepared by electrospinning. The asymmetric wettability double-layer micronanofiber pad (PET@FT10%/PET) has been developed by utilizing the hydrophobic properties of PET. The addition of FT endows super hydrophobic PET with excellent hydrophilic properties and absorbent properties to ensure the dryness of the wound environment. Meanwhile, the hydrophobic PET layer avoids the adhesion of dust and bacteria, providing a barrier to prevent pollution of the complex external environment for the drug-carrying layer. Furthermore, the PET@FT10%/PET double-layer micronanofiber pad provides favorable conditions for wound healing with the validation by inhibition of representative pathogens Escherichia coli and Staphylococcus aureus, and the expression of pro-inflammatory factors (IL-6 and TNF-α), and the cell survival rate also achieved excellent results. Therefore, the PET@FT10%/PET double-layer micronanofiber pad designed in this paper provides a neoteric strategy with an asymmetric structure design to avoid contamination and accelerate drug delivery for wound healing.
研究领域:
生物医学工程
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材料科学
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药理学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
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2023
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IF 11.1
Jinqiang Wang,Nigel Graham,Kai Sun,Liping Wen,Wenzheng Yu
The development of a detection method for fluoride and chromium (III) ions using a PET membrane with multiple biomimetic nanochannels is descibed. An asymmetric chemical etching technique was used to create conical nanochannels with a PET (polyethylene terephthalate) nuclear track membrane. SEM images showed that the pore diameter of the tip and base sides of the nanochannel were ∼40 nm and ∼180 nm, respectively. The compounds (4-aminophenyl) boronic acid (APBA) and 5-amino-2-nitrobenzoic acid (ANBA), with a specific recognition for F − and Cr 3+ respectively, were modified by a conventional method with EDC and NHS. The current-voltage (I–V) curves of the modified PET membranes in response to the target ions at different concentrations were measured with a picoammeter. Excellent linear relationships between the current value of the I–V curve at −2 V and the concentration of Cr 3+ and F − were established to obtain standard detection curves for Cr 3+ and F − . From these relationships unknown concentrations of Cr 3+ and F − can be quantitatively detected, and the results showed that the detection limits of Cr 3+ and F − were as low as 4.10 nM and 0.46 nM, respectively. The performance of the novel method was compared to conventional ICP-MS analysis by the determination of Cr 3+ in tap water and samples of the Jing Mi diversion canal, and good agreement was found between the two methods. The accuracy and reliability of the method has demonstrated its potential applicability to a wide range of other ionic contaminants.
研究领域:
分析化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Jiaqian Li,Chenxiang Li,Huimin Dou,Xiaojin Zhang,Yu Dai,Fan Xia
Salinity gradient (blue) energy has been identified as a promising power source and many technologies have been proposed for its recovery, one of which is nanopore power generators. The single-pore/channel membranes selectively transport ions to achieve efficient salinity gradient power generation. However, porous membranes fail due to concentration polarization. Here, we constructed a heterogeneous membrane by covering ion-selective hydrogel on a polyethylene terephthalate (PET) cylindrical nanochannel porous membrane for the first time to eliminate concentration polarization. The gel layer enhances the ion selectivity of cylindrical nanochannels, making heterogeneous membrane present the ion current rectification effect. The gel layer also avoids the negative impact of concentration polarization on the power generation of porous membranes. The results show that PET porous membrane can hardly generate electricity, but the power density of PET-hydrogel heterogeneous membrane can reach 1.92 W/m 2 under 50 times salinity gradient, which is superior to commercial ion exchange membranes. Our work provides a strategy (ion-selective hydrogel covering) to eliminate concentration polarization of porous membranes, and shows the prospect of cylindrical nanochannels for salinity gradient power generation.
研究领域:
材料科学
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能源工程
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Hongyi Shu,Chuang Wang,Liu Yang,Dongcang Sun,Changtong Song,Xianhong Zhang,Dong Chen,Yuhong Ma,Wantai Yang
Nowadays, effluent treatment is a severe challenge mainly because of its complex composition, which includes oil, heavy metal ions, and dyes. Developing new intelligent membranes is one of the strategies to tackle these significant challenges in wastewater treatment . In this study, we fabricated asymmetric polyethylene glycol terephthalate (PET) membranes by grafting cross-linked poly (itaconic anhydride) (CL-PITA) nanoparticles onto the irradiated face. These nanoparticles were then functionalized with polyethyleneimine (PEI) and protonated with HCl to introduce numerous active electropositive amine groups. The fundamental purpose was to increase surface roughness, introduce numerous hydrophilic groups, and modify it to create a multi-functional PET membrane to separate complex environments. The promising results demonstrated that the protonated PET- g -ITA/DVB (10) -cat membrane exhibited excellent separation efficiencies (SE) for water/light oil, water/heavy oil and oil-in-water (O/W) emulsion. Compared to PET- g -ITA/DVB (0) -cat, it showed superior performance in SE for O/W emulsion and flux decay for water/light oil after 10 cycles. More interestingly, owing to numerous positively charged active amino groups and negativley charged carboxylate groups, the intelligent membrane exhibited a high removal rate of ca. 90 % for anionic dye (congo red) and heavy metals (Cu 2+ and Co 2+ ), showing great potential in complex water treatment environments.
研究领域:
环境科学
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材料科学
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水处理
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膜技术
✓ 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）