JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
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IF 8.128
Xiangquan Liu,Jiaqi Tang,Jinglun Yang,Helan Zhang,Yu Fang
Preparation of nanofilms which are able to reject water-soluble low molecular weight organic compounds in nanofiltration remains to be a challenge. Herein, we report a new kind of self-standing, defect-free, robust, centimeter-sized and thickness controllable calix[4]pyrrole (C[4]P)-based nanofilms with excellent molecular sieving performance in nanofiltration. The nanofilms were prepared via confined dynamic condensation of the tetra-benzoyl-hydrazine derivative of calix[4]pyrrole (CPTBH) with 1,3,5-benzenetricarboxaldehyde (BTC) at the air/dimethyl sulfoxide (DMSO) interface. Nanofiltration tests under 2 bar pressure with porous polyethylene terephthalate (PET) as the support and a CsF treated CPTBH-BTC nanofilm (∼100 nm) as the selective layer depicted a water permeance of 15 L m -2 h −1 bar −1 and a methanol permeance of 45 L m -2 h −1 bar −1 . High rejection rates (>95%) were found in aqueous solution for most of the tested dyes and pharmaceuticals. Remarkably, the composite membrane also demonstrated good separation performance in aqueous phase to some amino acids and organic dyes with molecular weights around 200 g/mol. High-performance nanofiltration in methanol was also realized. In this case, the molecular weight cutoff value is ∼ 800 g/mol. These findings showed that introduction of macrocyclic hosts is an effective way to develop nanofilms with high solvent permeance but low molecular weight cutoff value.
研究领域:
材料科学
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化学工程
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2016
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IF 7.145
Qingqing Sun,Yanchao Lü,Lingling Liu,Kaiqiang Liu,Rong Miao,Yu Fang
The supramolecular approach plays a pivotal role in the construction of smart and functional materials due to the reversible nature of noncovalent interactions. In the present work, two compounds, cholesterol-functionalized calix[4]pyrrole (CCP) and perylene bisimide diacid (PDA), were synthesized. Little fluorescence is observed in the ethanol solution of the mixture of CCP and PDA, while the solution turns fluorescent upon introduction of ammonia, which is attributed to the formation of a supramolecular ensemble, PDA/(CCP)2/NH3. The fluorescence emission of the as-formed ensemble is sensitive to the presence of phenol, an electron-rich analyte. Interestingly, the sensing can also be observed in the film state, and the relevant detection limit (DL) is lower than 1 ppb. Moreover, the sensing could also be performed in a visualized manner. Upon the basis of the findings, a sensor device with instant response and good reversibility was developed. Further studies revealed that the as-developed fluorescent ensemble is also sensitive to the presence of TNT, an electron-poor compound. The DL for this sensing is ∼80 nM. To our knowledge, this is the first report that a fluorescent sensor could be used for phenol sensing in the vapor state, and for sensing of both electron-rich and electron-poor analytes in solution state. It is believed that the present study presents a distinctive example that demonstrates how smart sensing is realized via combination of the host–guest chemistry of calix[4]pyrrole and the aggregation and disaggregation property of PBI derivatives.
研究领域:
超分子化学
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传感器与传感技术
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材料科学
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分析化学
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荧光光谱学
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DOI
高影响因子
CHEMOSPHERE
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2024
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IF 8.1
Shuzhao Zhang,Wenwen Bie,Xiongcheng Duan,Zhuorui Wu,Lin Zhang,Hengye Li,Zhongxia Wang,Meijie Wei,Fenying Kong,Wei Wang
Herein, effort was made to construct innovative adsorbent for the removal of polar organic micropollutants (OMPs) from water. Tetra- meso resorcinol-functionalized calix[4]pyrrole (CP) featured with endo -functionalized attribute and polyphenol hydroxyl structure was crosslinked by π-electron-rich 4,4′-bis(chloromethyl)biphenyl (BCMBP) through Friedel-Crafts reaction to generate porous calix[4]pyrrole-based polymers (PCPPs) with high surface area. The porosity of the PCPPs could be tuned by adjusting the molar ratio of hydrophilic CP to hydrophobic BCMBP, and diversified binding sites were integrated together. Based on adsorption kinetics and isotherm studies, PCPP(1–16) showed rapid adsorption rate and high removal efficiency (RE) as well as advanced adsorption capacity. The REs towards the tested polar OMPs by PCPP(1–16) were all above 95% in 30 min. Compared with granular activated carbon (GAC), the rate constant of pseudo-second-order model ( k 2 ) and adsorption capacity upon PCPP(1–16) were 8–230 times and 1.3–3.1 times greater than those by GAC. Adsorption mechanism studies confirmed the presence of multiple interactions and thermodynamic investigation revealed the spontaneous and physical adsorption nature. Besides, PCPP(1–16) showed excellent adsorption performance in real water samples at environmental levels and exhibited advanced absorption ability in flow-through mode. Accompanied by facile regeneration under eluting with methanol and cost-effective preparation, PCPP(1–16) demonstrated great potential as promising adsorbent for water treatment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Yusen Chen,Shuzhao Zhang,Xiongcheng Duan,Jia Liu,Hengye Li,Meijie Wei,Wei Wang
The rapid and efficient removal of radioiodine from water is a challenging and meaningful task to safeguard human health. Herein, two calix[4]pyrrole-based polymers were prepared through Mannich reaction between nitrogen-rich 2,4,6-tri(piperazin-1-yl)-1,3,5-triazine (TPT) and two configurational isomers of tetra- meso resorcinol-functionalized calix[4]pyrrole (2α2β-CP and 4α-CP), referred as 2α2β-CP-TPT and 4α-CP-TPT, respectively. The nitrogen contents of 2α,2β-CP-TPT and 4α-CP-TPT were as high as 15.11 % and 14.84 %, respectively. Accompanied by the bowl-shaped calix[4]pyrroles, the CP-TPTs showed high vapor iodine uptake, especially 4.82 g/g for 4α-CP-TPT. More importantly, the CP-TPTs exhibited rapid adsorption kinetics for capture iodine from aqueous phase, with the 2α,2β-CP-TPT at 1 mg/mL level showing a k 2 value as high as 7.374 × 10 −3 g/(mg min). In addition, high iodine adsorption capacity for 2α,2β-CP-TPT and 4α-CP-TPT were achieved to be 1989.6 and 2812.6 mg/g from water, respectively. Even more impressive was the removal efficiency above 98 % in flow-through applications even at flow rate as high as 10 mL/min and in simulated seawater conditions. The CP-TPTs could also exhibit high dynamic iodine adsorption capacity from water as well as excellent stability and outstanding reusability. Adsorption mechanism study discovered the foundational role of the charge transfer interaction on the excellent adsorption performance of the CP-TPTs. All these features demonstrated promising application prospects of the CP-TPTs for iodine removal from water.
研究领域:
环境化学
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功能高分子材料
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核素去除
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吸附科学
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水污染控制
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放射化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
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2026
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IF 6
Xiongcheng Duan,Shuzhao Zhang,Jia Liu,Zhuorui Wu,Wan Meng,Lin Zhang,Hengye Li,Zhongxia Wang,Meijie Wei,Wei Wang
Macrocycle-based porous organic polymers (M-POPs) are promising adsorbents for uptake of iodine vapor and adsorption of organic micropollutants (OMPs) from water. Herein, two conjugated triaryl triazine-incorporated, calix[4]pyrrole-based porous organic polymers were prepared by diazocoupling reaction between 4,4′,4′'-(1,3,5-triazine-2,4,6-triyl)trianiline (TTTA) and two configurational isomers of resorcinol-modified calix[4]pyrroles (2α,2β-C4P and 4α-C4P), referred as CP-POP-1 and CP-POP-2, respectively. The obtained CP-POPs were gifted with good porosity, high nitrogen contents and conjugated triaryl triazines, while CP-POP-1 and CP-POP-2 exhibited high iodine vapor uptake at 4.27 g/g and 4.25 g/g, respectively. Charge transfer interaction was the main mechanism for iodine vapor uptake on the CP-POPs. Besides, the CP-POPs displayed preferred adsorption feature to cationic dyes, such as methylene blue (MB), crystal violet (CV) and rhodamine B (RB), while CP-POP-2 showed superior adsorption performance towards cationic dyes. The q m values of MB, CV and RB by CP-POP-2 were as high as 317.46, 373.13 and 471.69 mg/g, respectively. Thermodynamic studies discovered that the adsorption of cationic dyes upon CP-POP-2 was a spontaneous process, while mechanism researches confirmed that electrostatic, hydrophobic and host-guest interactions were involved for adsorption of cationic dyes upon CP-POP-2. In addition, CP-POP-2 could adsorb cationic dyes efficiently from water samples containing complex matrix and exhibited good reusability. The obtained results suggested the bright prospect of the CP-POPs in removal of environmental pollutants. Download: Download high-res image (222KB) Download: Download full-size image
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高影响因子
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