JOURNAL OF MEMBRANE SCIENCE
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2024
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IF 8.4
Yingbo Li,Jing Ma,Hongjun Lin,Cheng Chen,Saleam Raza,Qianqian Zeng,Xinchun Lu,Liguo Shen
The development of composite membranes utilizing transition metal carbides and nitrides, exemplified by Ti 3 C 2 T x (MXene), has proven efficacious in the treatment of oily wastewater. However, challenges arise from the prolonged and convoluted transport paths within MXene interlayer nanochannels, significantly impeding mass transfer and diminishing membrane permeability. This investigation incorporated porous covalent organic frameworks (COFs) as intercalating agents into two-dimensional (2D) MXene-based membranes to expand the interlayer nanochannels. The resulting MXene@COF-TpBD functional layer polyethersulfone (PES) composite membrane exhibited a distinctive dual superoleophobic surface, concurrently manifesting underwater superoleophobicity and underoil superhydrophobicity (underwater oil contact angle >150°, underoil water contact angle >150°). The membranes exhibited excellent water flux (up to 4092.7 L m −2 h −1 ·bar −1 ), efficient oil-water emulsion separation (up to 1908.4 L m −2 h −1 ·bar −1 , rejection rates >99.78 %), noteworthy fouling resistance and structural stability, outperforming most of existing similar membranes. Furthermore, supported by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, the incorporation of COF-TpBD improved the antifouling characteristics of the composite membrane. This work presents innovative insights into the improvement of 2D MXene membranes and the use of COF-TpBD for the specific remediation of oily wastewater.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
Journal of Materiomics
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2024
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IF 8.4
Huili Ran,Xue Liu,Jiajie Fan,Yun Yang,Lijie Zhang,Qin Guo,Bicheng Zhu,Quanlong Xu
The construction of heterojunction is an effective way to promote the photoinduced charge carrier separation in spatial, thus accelerating the photocatalytic reaction. However, the regulation of interface properties, as a crucial factor in affecting the charge carrier diffusion process, still remains a significant challenge. In this work, BiOBr/TpBD-COF heterojunction was successfully constructed via a novel phase transformation strategy. Specifically, perovskite Cs 3 Bi 2 Br 9 was first synthesized and then in-situ transformed into BiOBr during the preparation of TpBD-COF procedure, thus obtaining BiOBr/TpBD-COF heterojunction with favorable interface. According to the in-situ X-ray photoelectron spectroscopy (XPS) characterization and electron paramagnetic resonance (EPR) analysis, the photogenerated electrons with weak reduction power transfer from BiOBr to TpBD-COF driven by the internal electric field under irradiation, conforming S-scheme charge transfer mode. As a result, the photogenerated electrons and holes with strong redox abilities are spatially located on TpBD-COF and BiOBr surface, respectively, endowing the strong driving force toward the water splitting reaction. The optimized 10%BiOBr/TpBD-COF displayed remarkably enhanced photocatalytic hydrogen evolution rate (16.17 mmol·g −1 ·h −1 ) in comparison with TpBD-COF (5.18 mmol·g −1 ·h −1 ). This study will provide some novel inspirations for developing efficient COF-based S-scheme heterojunction photocatalysts.
研究领域:
材料科学
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光催化
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DOI
高影响因子
International Journal of Environmental Research and Public Health
·
2023
·Vol. 20
·期 2
·1393
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IF 4.614
Zihan Li,Mengqi Yang,Xuetong Shen,Hongtao Zhu,Baohui Li
Covalent organic framework (COF)-TpBD was grafted on the arrayed nanopores of stainless steel fiber (SSF) with (3-aminopropyl) triethoxysilane as the cross-linking agent. The prepared SSF bonded with COF-TpBD showed high thermal and chemical stability and excellent repeatability. The prepared SSF bonded with COF-TpBD was also used for the solid-phase microextraction (SPME) of seven kinds of polycyclic aromatic hydrocarbons (PAHs) in actual water samples, followed by gas chromatography with flame ionization detection (GC-FID) determination, which exhibited low limits of detection (LODs), good relative standard deviation (RSD) and high recoveries.Keywords:solid-phase microextraction;COF-TpBD;polycyclic aromatic hydrocarbons
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
RSC Advances
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2024
·Vol. 14
·期 38
·28148-28159
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IF 3.9
Lidi Gao,Xinran Qu,Shuang Meng,Mo Chen,Yuxin He,Fuquan Zhao,Hongtao Chu,Shili Qin,Fenglong Jin
The excellent stability of covalent organic frameworks (COFs) and the diversity of metal organic frameworks (MOFs) make MOF/COF hybrid materials promising candidates for chromatographic stationary phases. In this paper, a TpBD/UiO-66-NH2 hybrid material was synthesized through a Schiff-base reaction between TpBD COFs and UiO-66-NH2 MOFs; characterized using Fourier-transform infrared spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy; and bonded to a capillary to prepare a TpBD/UiO-66-NH2-bonded open tubular capillary electrochromatography (OT-CEC) column. Results suggested that the hybrid material had the crystal morphology of a single COF and MOF, a micro–mesoporous structure, and good thermal stability. The inner surface of the OT-CEC column was tightly and uniformly distributed with the stationary phase (∼1.5 μm). The baseline separation of 13 amino acids and three families (4 acidic antibiotics, 4 preservatives and 6 sulfonamides) of emerging pollutant mixtures was achieved due to the synergistic effect of TpBD and UiO-66-NH2 in the stationary phase. The OT-CEC column showed good reproducibility and stability with relative standard deviations of migration time and resolutions in the range of 1.17–3.93% and 1.79–4.31%, respectively.
研究领域:
分析化学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2020
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IF 3.807
Lu-Lu Guo,Yi-Ying Wang,Yue-Hong Pang,Xiao-Fang Shen,Nian-Ci Yang,Yun Ma,Yi Zhang
An in situ growth strategy for construction of covalent organic frameworks (COFs) TpBD on glassy carbon electrode using p-aminobenzoic acid and ethylenediamine as connector is introduced. The fabricated electrode was used for electrochemical biosensing of aflatoxin M1 in milk samples combined with magnetic nanoparticles , which acted as probe carriers. The developed electrochemical biosensor exhibited high selectivity and sensitivity toward aflatoxin M1 with a detection limit of 0.15 ng/mL (S/N = 3). Moreover, the covalent bonding of TpBD on the glassy carbon electrode has good stability, which retained 76% of the initial signal after 15 days storage at room temperature . This work provides a valuable case for in situ growth of COFs TpBD on the electrode, and the proposed synthetic route is expected to provide a powerful tool for the wide application of other functional COFs in electrochemical biosensor.
研究领域:
分析化学
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食品科学
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材料科学
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DOI
高影响因子
CHIRALITY
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2022
·Vol. 34
·期 3
·462-472
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IF 2.183
Zhen Wang,Wan-Qi Xiong,Zhi-Feng Huang,Gai-Zhao Qin,Min Zi,Li-Ming Yuan
Chiral covalent organic framework materials have many excellent properties, which have received much attention in the field of separation. Synthesized the covalent organic framework COF-TpBD (NH 2 ) 2 modified, respectively, by L-valine trifluoroacetyl derivative, L-hydroxyproline, and (1S)-(+)-10-camphorsulfonyl chloride, three capillary columns of chiral covalent organic framework materials were obtained for gas chromatography. Those columns are able to separate some chiral compounds, positional isomers, n-alkanes, n-alcohols, aromatic hydrocarbon mixture, and Grob's reagents. They are complementary to other chiral capillary columns and are possible for potential applications.
研究领域:
分析化学
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材料科学
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色谱学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2024
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IF 4.1
Qinghua Qu,Yuqiao Jiang,Linyan Cheng,Qingyuan Xue,Ranran Li,Cheng Fang,Hongping Li,Jing Ding,Hui Wan,Guofeng Guan
Covalent organic frameworks (COFs) with high specific surface area, ordered pore wall, modified porous surface and customizable chemical structure have been widely used in CO 2 capture. However, the screening of functionalized COFs suitable for CO 2 capture still relies on experiments, which will require a long experimental period with blindness and randomness. Herein, we chosed three electron withdrawing groups (–NO 2 , –CN and −Br) and three electron donating groups (–CH 2 NH 2 , –CH 3 , –OCH 3 ) to explore the effect of electron withdrawing ability of functional groups on the CO 2 adsorption capacity. Grand canonical Monte Carlo (GCMC) method was used to simulate the adsorption capacity of CO 2 over X-TpBD-COFs (X=–NO 2 , –CN, −Br, –CH 2 NH 2 , –CH 3 , –OCH 3 ). As the result, NO 2 -TpBD-COF had the highest adsorption capacity among the six functionalized X-TpBD-COFs at 100 kPa and 25 ℃ (49.37 cm 3 /g), while OCH 3 -TpBD-COF had the lowest adsorption capacity among them (23.51 cm 3 /g at 25 ℃ and 100 kPa). The order of binding energy was basically the same as the order of adsorption capacity when the synergistic interactions between functional groups and oxygen atoms in Tp were considered according to density functional theory (DFT). Molecular dynamics (MD) showed that the diffusion and distribution of CO 2 were mainly effected by pore structures. To verify the simulation results, NO 2 -TpBD-COF and OCH 3 -TpBD-COF were successfully prepared by solvothermal method. The CO 2 adsorption capacities of these two COFs were basically consistent with the conclusion obtained by the simulations. This study provided a way for simulation to guide accurate and rapid experimental design of COF materials for CO 2 capture.
研究领域:
材料科学
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环境科学
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化学工程
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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
Wenbei Chen,Huixian Liu,Yuting Chen,Jian Ke,Xin Qiu,Jianqiu Chen,Yibing Ji
Membrane separation technology has infinite potential to produce optically pure drugs. However, there are still challenges regarding chiral membranes, such as the single separation object, poor mechanical properties, and constrained relationship between permeability and enantioselectivity. To improve the membrane properties, heptakis (6-amino-6-deoxy)- β -CD-modified carboxyl-functionalized COF (TpBD-Am7CD) was introduced as a chiral functional material for the preparation of a TpBD-Am7CD stainless steel I-Net cellulose acetate membrane (COF/SSCAM) via interfacial polymerization. Using tryptophan as the template molecule, the membrane preparation and filtration conditions were optimized to achieve maximum enantioselectivity. The optimized COF/SSCAM achieved a better enantiomeric excess percentage (e.e.% = 100.00%) and solute permeation flux (J S = 37 × 10 −6 mol m −2 h −1 ) for racemic tryptophan than the support membrane, which was attributed to the enantioselectivity and hydrophilicity of TpBD-Am7CD. Moreover, COF/SSCAM achieved enantiomeric separation of racemates of propranolol, warfarin, atenolol, and metoprolol, and the e.e.% values were 39.51%, 5.60%, 16.04%, and 3.09%, respectively. In addition, the chiral recognition mechanism was investigated by molecular docking simulation.
研究领域:
材料科学
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生物医学工程
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化学工程
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Weijuan Guo,Ling Yan,Jianhua Qian,Can Luo,Ye Ren,Wei Xie,Jianfen Cai,Jing Ding,Muqing Qiu,Baowei Hu
Herein, covalent organic frameworks (i.e., TpBD) were fabricated by mechanical delamination of 1, 3, 5-triformylphloroglucinol (Tp) and benzidine (BD) using NaHCO 3 as foaming agent. The batch characterizations revealed that flower-like TpBD nanosheets exhibited the large porosity, high BET specific area (139 m 2 /g), small pore size (∼ 14 Å), remarkable stability and keto form. The adsorption process of U(VI) removal by TpBD displayed the fast sorption rate (equilibrium within 0.5 h), high adsorption capacity (167 mg/g) and good re-usability (no significant difference after five cycles). According to analysis of X-ray photoelectron spectroscopy (XPS) and surface complexation modeling, the removal mechanism of U(VI) by TpBD was chemisorption and inner-sphere surface complexation. These findings are of great importance for the application of covalent organic frameworks fabricated with rapid and easy-to-operate mechanochemical method in actual environmental cleanup .
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
高影响因子
ACS Applied Materials & Interfaces
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2021
·
IF 9.229
Siqi Zhuo,Xuehua Wang,Lingyu Li,Shan Yang,Yibing Ji
Combining chiral molecules and covalent organic frameworks (COFs) with ordered pores can result in chiral COFs, which may be employed in the fields of chiral chemistry. In this study, we constructed a novel carboxyl-functionalized COF TpBD-3COOH first and then integrated a chiral molecule, heptakis (6-amino-6-deoxy)-β-CD (Am7CD), into TpBD-3COOH to obtain TpBD-Am7CD. Comparing TpBD-3COOH with TpBD-Am7CD, it could be observed that chiral selectivities improved significantly after decorating TpBD-3COOH with Am7CD in the adsorption experiment. Meanwhile, TpBD-Am7CD exhibited similar chiral selective abilities as the previously reported β-CD COF when it was employed to adsorb amino acid enantiomers, while the content of Am7CD was much less than that in β-CD COF. This indicated that the framework of TpBD-3COOH enhanced the chiral selective ability of Am7CD, which would be a great chiral carrier material for further application. This work provides a new insight for establishing materials for application in the chiral recognition field. Besides, TpBD-Am7CD resulted in an insoluble powder, which endowed this material with the possibility to be an adsorbent and a stationary phase in chromatography.
研究领域:
材料科学
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化学
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分析化学
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DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
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2024
·Vol. 47
·期 14
·2400314
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IF 2.8
Ping Su,Qiqi Wang,Mengxi Li,Xinrui Tian,Jiayi Song,Yi Yang
In this work, a novel electrospun nanofiber (PAN/TpBD; 2,4,6-triformylphloroglucinol [Tp] and benzidine [BD]; polyacrylonitrile [PAN]) was fabricated via a facile electrospinning method and utilized as adsorbent in thin film microextraction (TFME) of phthalate esters (PAEs) (dimethyl phthalate, diethyl phthalate, diallyl phthalate, dibutyl phthalate, and dioctyl phthalate) in biodegradable plastics. The prepared PAN/TpBD combines the strong stability of nanofibers with increased exposure sites for covalent organic frameworks and enhanced interactions with the target, thus improving the enrichment effect on the target. The extraction efficiency of PAN/TpBD reached above 80%. Based on PAN/TpBD, a TFME-high-performance liquid chromatography method was established, and the experimental parameters were optimized. Under the optimal extraction conditions, the PAEs of this method varied linearly in the range of 10–10 000 µg/L with low detection limits (0.69–2.72 µg/L). The intra-day and inter-day relative standard deviation values of the PAEs were less than 8.04% and 8.73%, respectively. The adsorbent can achieve more than 80% recovery of the five targets after six times reuse. The developed method was successfully applied for the determination of trace PAEs in biodegradable plastics with recoveries ranging from 80.1% to 113.4% and relative standard deviations were less than 9.45%. The as-synthesized PAN/TpBD adsorbent exhibited great potential in PAE analysis.
研究领域:
分析化学
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环境科学
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DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 28
·8071-8079
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IF 4.478
Wei Wei,Lu Zenghui,Wu Ting,Wang Haibo,Han Qiang,Liang Qionglin
In this study, a covalent organic framework (COF)-TpBD-supported melamine sponge (MS) was fabricated through a one-step hydrothermal method. The obtained monolithic column was then applied in in-syringe solid-phase extraction (IS-SPE) for the separation of three volatile ingredients from serum samples. Given credit for the superior adsorption capacity of the COF and the homogeneous microporous property of MS, the developed column exhibited satisfactory separation of the targets. And the dominating adsorption mechanism was the hydrophobic interaction forces between TpBD and targets and the high mass transfer efficiency provided by the large pore structure of MS. The results of dynamic adsorption showed that the MS@TpBD column displayed much better adsorption performance than blank MS and TpBD. And it has featured great reusability up to 5 cycles and obtained satisfied recovery values (87.9 ~ 110.3%) in serum samples. As a result of sample clean-up, this column offers low limit of detections (LODs) down to 0.014, 0.010, and 0.020 μg/mL, respectively. In summary, we believe that this convenient separation column has prominent application promise in the fields of separating activity ingredients in biological samples.
研究领域:
分析化学
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药学
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材料科学
✓ 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）