MICROPOROUS AND MESOPOROUS MATERIALS
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2021
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IF 5.455
Hao Guo,Huifang Li,Chuanyong Jing,Xinbo Wang
Adsorbents have been a long-standing territory of insoluble solid materials in the field of adsorption technique for organic pollutants removal from wastewater. While the robust porous frameworks with high surface areas can give high uptakes and good sorption kinetics, their practical applications are impaired as fouling and sorbent attrition always occur and decay their performance. Here, we describe a simple approach based on the permanently microporous polymer, PIM-1, overcoming the above mentioned issues. PIM-1 demonstrates comparable adsorption capacity to the state-of-the-art phenolic pollutant adsorbents, with the benefit that PIM-1 is resistant to water but soluble in common organic solvents , making it eminently viable for fabrication into different morphologies, and permitting reuse after simple treatments if fouled or blocked. Additionally, PIM-1 presents pH controlled high selectivity for different phenols and low pollutant residue ability to achieve the safety stand of drinking water . DFT calculation revealed that H-bonding between the CN groups of PIM-1 and the phenoxy groups played a critical role for adsorption. This work opens new window of using soluble polymer with microporosity as adsorbents.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 29
·24091-24096
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IF 3.289
Yin-bo Fan,Min Huang,Yu Cao,Ping Gong,Wen-bing Liu,Shu-yu Jin,Jia-chen Wen,Yong-kui Jing,Dan Liu,Lin-xiang Zhao
Usnic acid (UA) is a secondary metabolite of lichens with a unique dibenzofuran scaffold. The growth inhibitory and apoptotic effects of UA as well as the potential mechanisms of action were determined in human acute myeloid leukemia HL-60 cells and chronic myeloid leukemia K562 cells. UA inhibits growth and induces apoptosis in both cell lines with HL-60 cells more responsive. The apoptotic effects are associated with a decrease in the levels of the anti-apoptotic protein Mcl-1. UA inhibits mitogen-activated protein kinase-interacting kinase 1/eukaryotic translation-initiation factor 4E (Mnk1/eIF4E) and the proviral integration site of moloney murine leukemia virus-1/eIF4E-binding protein 1 (Pim-1/4E-BP1) signallings in both cell lines. A kinase inhibition assay reveals that UA is a potent Pim-1 inhibitor with limited activity to inhibit Mnk1. Considering the important role of Pim-1 in myeloid leukemia, UA represents a lead compound for developing effective therapeutics for myeloid leukemia treatment.
研究领域:
肿瘤学
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药理学
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细胞生物学
✓ 已验证
DOI
高影响因子
Small
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2024
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IF 13
Ruoxuan Qi,Ming Yang,Tianle Zheng,Xingchen Liu,Yonggao Xia,Ya-Jun Cheng,Peter Müller-Buschbaum
The LiCoO 2 (LCO) cathode is foreseen for extensive commercial applications owing to its high specific capacity and stability. Therefore, there is considerable interest in further enhancing its specific capacity by increasing the charging voltage. However, single-crystal LCO suffers from a significant capacity degradation when charged to 4.5 V due to the irreversible phase transition and unstable structure. Herein, an ultra-small amount (0.5% wt. in the electrode) of multi-functional PIM-1 (a polymer with intrinsic microporosity) additive is utilized to prepare a kind of binder-free electrode. PIM-1 modulates the solvation structure of LiPF 6 due to its unique structure, which helps to form a stable, robust, and inorganic-rich cathod-eelectrolyte interphase (CEI) film on the surface of LCO at a high voltage of 4.5 V. This reduces the irreversible phase transition of LCO, thereby enhancing the cyclic stability and improving the rate performance, providing new perspectives for the electrodes fabrication and improving LCO-based high-energy-density cathodes.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2025
·
IF 9
Weihao Liu,Xu Jiang,Yan Yang,Lei Guo,Haoyang Wang,Lu Shao
Constructing high-performance mixed matrix membranes (MMMs) with highly permeable polymers of intrinsic microporosity (PIMs) and metal-organic frameworks (MOFs) faces critical challenge of poor interfacial compatibility between MOF fillers and the polymer matrix and difficulty in maintaining a defect-free interface at high filler loading (over 30 %). In this study, a Bi-HHTP loading as high as 50 wt% and uniform dispersion with excellent interfacial integrity is achieved in our high-performance MMMs through the elaborate design of multiple synergistic interfacial interactions, including hydrogen bonding between the phenolic hydroxyl groups of the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand in the Bi-HHTP filler and the cyano groups in the PIM-1 matrix and π-π stacking between their benzene ring structures. The optimized MMM exhibits a remarkable CO 2 permeability up to 4021 Barrer with an ideal CO 2 /N 2 selectivity of 42.1 which substantially outperforms the neat PIM-1 membrane and exceeds the 2019 upper bound. The enhanced separation performance of the MMMs stems mainly from the significant increase in CO 2 solubility selectivity with Bi-HHTP loading, which benefits from the inherent CO 2 affinity of Bi-HHTP and the effective suppression of N 2 dissolution by the rigidification of PIM-1 chain segments induced by strong interfacial interactions. Most importantly, the resulted high-loading MMMs exhibited remarkable structural stability, showing strong resistance to both physical aging and CO 2 -induced plasticization. This strategy overcomes the loading bottlenecks of state-of-the-art MMMs and contributes advanced membrane materials for efficient CO 2 capture.
研究领域:
材料科学
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化学工程
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膜技术
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气体分离
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金属有机框架材料（MOFs）
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Y. Zhang,X. Lou,J. Dan,C. Franke,L. Tang,J. Li,Z. Gao,L. Zhou,B. Chen,T. Li,T. Liu
All-solid-state lithium batteries with lean (ultrathin) lithium anodes and polymer-based electrolytes e.g., polyethylene oxide (PEO), can potentially offer high energy density , reduced processing cost and improved mechanical contact at electrolyte-electrode interfaces. The non-uniform lithium deposition and inadequate mechanical strength of PEO, however, tend to cause deactivated lithium and short-circuiting by Li dendrites over lithium deposition/stripping cycles; these issues become more aggravated with lean Li anodes due to the more severe volume changes. Herein, we construct a more mechanically and chemically stable lithium-electrolyte interface by coupling alloyed lean Li anodes (<50 μm) with PEO electrolytes blended with polymers of intrinsic porosity (PIMs). The lean Li anode is fabricated by a facile and scalable cold-rolling method, which leads to a uniformly alloyed lithium anode permitting epitaxial Li deposition. Meanwhile, PIM reinforces the mechanical strength of the PEO composite electrolyte, reducing the likelihood of dendrite formation/penetration. Importantly, the introduction of both GaInSnZn and the first-generation PIM has been found to reduce the interfacial charge transfer resistance via modifying the composition of solid-electrolyte interphase. The resulting full cells with lithium iron phosphate cathodes exhibit a high specific capacity of ∼160 mAh/g, i.e., ∼0.6 mAh/cm 2 with excellent retention of 93.1 % at 120 cycles.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
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2023
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IF 4.6
Jingjing Hou,Lu Han,Shuzheng Sun,Mingkai Li,Junbo Yue,Yanqin Yang,Jingde Li
The commercialization of lithium-sulfur (Li-S) batteries has been restrained mainly by lithium polysulfides (LiPSs) shuttling and sluggish electrochemical reactions . Herein, a functional separator with synergy effect between adsorption and catalysis is proposed to solve the above problems. Specifically, an ultrathin barrier layer of a functionalized intrinsic microporous polymer (Li-AOPIM-1) is coated on SWCNT gutter layer through spin coating and applied to modify the cathode side of commercial polypropylene (PP) separator. In this configuration, the robust SWCNT gutter layer with high conductivity can not only work as a physical barrier to block the macropores of PP separator, but also improve the integral conductivity, resulting in a rapid charge migration and reaction kinetics. The electronegative heteroatoms N and O in Li-AOPIM-1 top layer have strong adsorption capability to LiPSs so that modified separator can restrain the shuttle effect admirably. Moreover, the introduction of lithiated sites further enhance the lithium-ion conductivity. Accordingly, the Li-S batteries implementing this modified separator deliver stable lifespan with only 0.062% capacity fading rate per cycle after 500 cycles at 1 C and superior rate performance of 700.6 mAh g −1 at 3 C. This work will provide a feasible strategy for the practical applications of high-performance Li-S batteries.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Yongchao Sun,Jingfa Zhang,Hongjin Li,Fangxu Fan,Qizheng Zhao,Gaohong He,Canghai Ma
Polymers of intrinsic microporosity (PIMs) have seen a growing role in gas separation membranes. Further exploitation of gas separation performance of PIM membranes and overcoming their persistent challenge of plasticization are urgently demanded. To address these issues, exemplified PIM-1 is synthesized and hydrolyzed to form carboxylated PIM-COOH polymers, followed by esterification using propylene glycol to prepare monoesterified PIM, which is finally thermally ester-crosslinked at various temperatures and time. The 300 °C-8 h treated membranes exhibit a CO 2 permeability of 7421 Barrer, with a CO 2 /CH 4 and CO 2 /N 2 selectivity of 11.5 and 19.2, respectively, considerably exceeding the 2008 Robeson upper bounds. Furthermore, the crosslinked membranes demonstrate significantly enhanced CO 2 plasticization resistance up to 42 bar, compared with uncrosslinked ones. It is the first time of reporting ester-crosslinking of carboxylated PIM-1 with both higher gas permeability and selectivity than PIM-1, using a much milder crosslinking temperature than other techniques, such as decarboxylated crosslinking. The design principle of this work paves the way for preparing high-performance and plasticization-resistant PIM membranes with promises for energy-efficient gas separations.
研究领域:
材料科学
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化学工程
·
膜技术
✓ 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）