JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Shichen Zeng,Xu Liang,Mingang Zhao,Yanxiong Ren,Hanze Ma,Ziting Zhu,Yuhan Wang,Shaoyu Wang,Junyi Zhao,Guangzhaoyao Yang,Xuerui Wang,Fusheng Pan,Guangwei He,Zhongyi Jiang
Covalent organic frameworks (COF) are deemed as disruptive membrane materials owing to their versatile functionalities, high stability and ordered nanochannels. However, the size mismatch between the COF intrinsic pore and gas molecules becomes a grand challenge when using COF membrane for carbon capture. Herein, we propose a new type of polymer-functionalized COF laminar membranes through grafting CO 2 -phlic polyethyleneimine (PEI) polymer onto carboxylic acid COF (cCOF) laminar membranes. The cCOF nanosheets with high density of carboxyl groups are prepared via modified single phase solution method and then assembled to fabricate membranes. Further, the cCOF membranes are functionalized with PEI using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide/N-Hydroxysuccinimide (EDC/NHS) coupling chemistry. The introduction of abundant amino groups from PEI afford the affinity of membranes toward CO 2 . Meanwhile, the graft of the PEI polymers reduces the defects or pinholes on the membrane surface. As a result, the PEI functionalized cCOF membranes exhibit a high CO 2 permeance of 1004 GPU and a CO 2 /N 2 selectivity of 33.7, which reach the carbon capture target performance and show great prospect for treating real flue gas. Our approach of functionalizing cCOF membranes with tailored functionalities may inspire the design of molecule-selective COF membranes.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Horizons
·
2025
·
IF 10.7
Qinfu Lu,Xinyue Wang,Miaoya Zhang,Zhen Wang,Xianan Qin,Baochang Sun,Shanshan Lv
Macroscopic assembly has been investigated to construct appealing materials. But it seems a question remains to be answered, i.e., is macroscopic assembly always one by one? In this study, a new kind of silk-based hydrogels were developed through incorporating lignin-related compounds via the 1-ethyl-3-(3-pyl)-carbodiimide/N-hydroxysuccinimide (EDC/NHS)-mediated coupling chemistry. Thanks to the hydrogen bond, hydrophobic and π-π interactions, the hydrogels processed capability of adhesive and macroscopic assembly, which could be further tuned by introducing iron ions, as Fe^(3+) can form coordination bonds with lignin. Examination on the three-body macroscopic assembly behavior of the silk/lignin-based hydrogels was conducted as an approach towards answering the above question. Under experimental conditions tested in this study, the answer is yes. Yet it would be reckless to draw a definitive conclusion to the question. This study intended to draw attention to this matter and evoke more interests and investigations using various macroscopic assembly systems.
研究领域:
材料科学
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高分子科学
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胶粘剂技术
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生物材料
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自组装
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产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2021
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IF 10.618
Zhuoyue Zhou,Zhao Yang,Li Xia,Houjin Zhang
Chiral analysis of amino acids (AAs) is of great importance in medical science due to the distinctive effect of AA isomers on human health. Although various chiral recognition techniques have been developed, the quantitative chiral recognition of low-level AA isomers remains challenging. Here, we combined the fiber optic SPR with an enzyme-substrate recognition mechanism to construct a direct-assay-type chiral AA biosensor. As a proof-of-concept attempt, a recently discovered Rasamsonia emersonii D-amino acid oxidase (ReDAAO) with a wide substrate spectrum and high stability was immobilized on the graphene oxide and gold nanorods composites (GO-AuNRs), using both EDC/NHS coupling and the gold-binding peptide (GBP) method. Such a biosensor can distinguish two AA isomers at the same concentration. It achieved specific detection of D-amino acids (D-AAs) with a linear range from 5x10 -4 mM to 30 mM. Furthermore, it showed good resistance to enantiomeric interference. When the percentage of D-AA increases in the isomer mixture, a good linear relationship between the D/(D + L)-AA ratio and SPR spectral shift was obtained. This unique combination of the enzyme , nanocomposite , and SPR taps into the rich reservoir of proteins for chiral receptors. It lays the foundation for protein-based chiral recognition of other clinically important small molecules in future biosensor designs.
研究领域:
生物传感器
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分析化学
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生物医学工程
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纳米技术
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酶学
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 47
·27156-27163
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IF 10.733
Weifeng Zhang,Ruixiang Qu,Xiangyu Li,Yanan Liu,Yen Wei,Lin Feng
In the oil/water emulsion treatment field, the separation of dispersed tiny oil droplets and the removal of surfactants are both significant in order to obtain purified water. Superwetting materials have proved to be an ideal solution for stabilized emulsion separation. However, most of the previous studies only focus on the separation of oil from water while neglecting the removal of surfactants. With the purpose of realizing in situ emulsion separation and surfactant removal, a dual functional Janus membrane is designed inspired by mussel-inspired chemistry and an EDC/NHS coupling reaction. After modification, abundant amino groups and carboxyl groups are decorated on two sides of the microfiltration membrane substrate, respectively (denoted as the –NH2 side and –COOH side). Combining special wettability with electrostatic interaction, the as-prepared membrane is able to separate stabilized oil-in-water emulsions and remove anionic/cationic surfactants simultaneously. The –NH2 side is used for the treatment of anionic emulsions with the surfactant sodium dodecyl sulfate (SDS), while the –COOH side is used for the treatment of cationic emulsions with the surfactant hexadecyl trimethyl ammonium bromide (CTAB). More importantly, the separation efficiencies are all above 99.5% and the surfactant removal efficiencies are up to 95.7%. To our knowledge, this is the first time to treat both dispersed oil droplets and surfactants using superwetting materials. The excellent recyclability and stability of the Janus material make it a potential candidate for application in the industrial field.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
Biomaterials Science
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2018
·Vol. 7
·期 1
·336-346
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IF 5.831
Dong Chen,Huangyong Jiang,Dongbo Guo,Wumaier Yasen,Junping Ao,Yue Su,Dongsheng Pan,Xin Jin,Xinyuan Zhu
Cationic gelatin nanoparticles ((+)nGNPs) were prepared by in situ polymerization upon the surfaces of monodispersed gelatin nanoparticles (GNPs) using N-(3-Aminopropyl)methacrylamide (APm) as monomer, which were then decorated with doxorubicin terminated poly(2-methylacryloyloxyethyl phosphorylcholine) (DOX-pMPC) via EDC/NHS conjugation to obtain core–shell nanoparticles ((+)nGNPs@DOX-pMPC) for cancer therapy. The non-fouling pMPC shell could effectively shield the positively charged surface of inner nanoparticle and prevent non-specific protein adsorption, thus endowing the materials with potential for long-acting cancer treatment. Furthermore, the acyl hydrazone bond connecting DOX and pMPC chain could be easily hydrolyzed in the weakly acidic tumor microenvironment. After decladding of the pMPC shell, electropositive (+)nGNPs carrying the drugs can be effectively internalized by cancer cells to induce apoptosis, avoiding undesirable hindrance caused by the superhydrophilic outer layer. On combining the above properties, this drug delivery system can be a promising candidate for long-acting, low-toxicity and high-efficiency cancer therapy.
研究领域:
纳米技术
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药学
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癌症治疗
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药物递送系统
✓ 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）