ANALYST
·
2023
·Vol. 148
·期 19
·4738-4745
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IF 4.2
Luyan Meng,Bing Wang,Baichun Wang,Quanshou Feng,Sijia Zhang,Zi Xiong,Shun Zhang,Ting Cai,Chuan-Fan Ding,Yinghua Yan
A Ti4+-functionalized magnetic covalent organic framework material with flexible branched polymers (mCOF@ε-PL@THBA-Ti4+) built via an immobilized metal ion affinity chromatography (IMAC) enrichment strategy was proposed through post-synthesis modification. Hydrophilic ε-poly-L-lysine (ε-PL) rich in amino active groups was first introduced in the fabrication of the phosphopeptide enrichment material to increase the hydrophilicity while providing more functional modification pathways of the material. 2,3,4-Trihydroxy-benzaldehyde (THBA) provides abundant binding sites for the immobilization of numerous Ti4+, which is advantageous for the subsequent efficient phosphopeptide enrichment. The magnetic nanocomposite exhibited outstanding performance of phosphopeptide enrichment with good selectivity (1 : 5000), a low detection limit (2 fmol), and relatively high loading capacity (66.7 mg g−1). What's more, after treatment with mCOF@ε-PL@THBA-Ti4+, 16 endogenous phosphopeptides from fresh saliva of healthy people were recognized by MALDI-TOF MS, and 50 phosphopeptides belonging to 35 phosphoproteins from the serum of uremia patients were detected by nano-LC-MS/MS. Proteomics data analysis for the differential protein selection between uremia and normal controls was conducted using R software, and four down-regulated and three up-regulated proteins were obtained. The results suggested that the prepared material has potential applications in biomarker discovery.
研究领域:
材料科学
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分析化学
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生物医学工程
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蛋白质组学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Wei Wang,Cong Liu,Mutian Zhang,Chenyang Zhang,Lin Cao,Chunfeng Zhang,Tengfei Liu,Debao Kong,Wen Li,Shougang Chen
It is a major challenge to combine the advantages of two kinds of two-dimensional materials to construct a heterojunction and achieve efficient photocatalytic antifouling. In this work, we covalently connected two materials MXenes and covalent organic frameworks (COFs) through the Schiff base reaction and anchored Ag nanoparticles (NPs) to prepare a Ti 3 C 2 /TpPa-1/Ag composite material with high efficiency bactericidal properties. The covalent bonding between MXene and COF greatly improved the stability of the material. Ti 3 C 2 /TpPa-1/Ag composite showed an excellent antibacterial property against S. aureus and P. aeruginosa . The fluorescence spectra of Ti 3 C 2 /TpPa-1/Ag proved that the electron transfer channels formed between the ternary materials could greatly improve the efficiency of carrier separation and prolong the life of photogenerated carriers. Density functional theory calculations showed that the synergistic catalytic effect of Ag and Ti 3 C 2 could greatly reduce the work function along the interface, and the built-in electric field between the layers drive carrier fast migration, which effectively improve the catalytic performance.
研究领域:
材料科学
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纳米技术
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光催化
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抗菌材料
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DOI
PubMed
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
Ying Liang,Tian Xia,Zhuangzhuang Wu,Yingjie Yang,Yongpeng Li,Zhuyin Sui,Chaokun Li,Ruimei Fan,Xinlong Tian,Qi Chen
The search for functionalized covalent organic framework (COF) materials is significant on account of their great promise for frontline applications in various fields. Herein, a novel and convenient tactic is developed to design and fabricate the tetrazole-functionalized COF materials with abundant nitrogen atoms, which can provide active sites, facilitating the incorporation of COFs with metal ions. In particular, a β -ketoenamine-linked COF named COF-TpDb is selected as precursor for postsynthetic modification to introduce the tetrazole moieties to coordinate with metal ions cobalt (Co 2+ ) and palladium (Pd 2+ ), giving two functional metal-coordinated COFs complexes COF-TpDb-TZ-Co and COF-TpDb-TZ-Pd. The resultant COF-TpDb-TZ-Co displays a higher oxygen evolution reaction activity with a lower overpotential of 390 mV at a current density of 10 mA cm −2 , which is much enhanced compared with COF-TpDb-TZ. The tactic for the fabrication of tetrazole-functionalized COFs with abundant nitrogen atoms implements rational design for the construction of functional COFs and expands the promising application of metal-coordinated COF materials in electrocatalysis .
研究领域:
材料科学
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电化学
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催化
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Manman Mu,Lingqi Meng,Siting Ma,Wenjuan Chen,Xiaohong Yin,Guoyi Bai
Covalent organic frameworks (COFs) equipped with controllable porosity and excellent structural stability are regarded as promising candidates for photocatalytic CO 2 reduction, yet some inherent drawbacks including low CO 2 activation and sluggish charge carriers’ transfer properties urgently need to be addressed. Herein, we developed an imine-bridged strategy to construct ZnO/COF heterostructure by integrating donor–acceptor COF (TAPT-DMTP COF) on the surface of amino-modified ZnO for photocatalytic CO 2 reduction. The optimal photocatalyst, N ZnO/TAPT-DMTP COF-3, exhibited superior photocatalytic activity for reducing CO 2 to CO and CH 4 , which was significantly higher than pristine COF and non-covalently bridged ZnO/TAPT-DMTP COF. Experimental and photo-electrochemical results reveal that the microstructure of TAPT-DMTP COF, interfacial imine-bridging and S-scheme heterojunction play a crucial role in promoting photoinduced charge transfer and separation, thus improving photocatalytic efficiency. Moreover, in-situ characterization and theoretical calculations indicate the photoinduced electrons transfer from N ZnO to TAPT-DMTP COF upon hybridization, and this S-scheme heterostructure dramatically lowers the energy barrier of rate-determining step from *COOH to *CO. This work provides insight into the covalent-linked COF-based S-scheme photocatalyst and highlights its vital role in enhancing CO 2 reduction.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiaxin Luo,Yihui Wu,Dawei Xiang,Shixing Wang,Jianqiang Ye,Hongliang Liu,Libo Zhang
Gallium is a strategic metal extensively applied in semiconductors, optoelectronics, and LED manufacturing. However, extracting Ga(III) from aqueous solutions remains challenging due to its typically low concentrations and interference from coexisting metal ions. In this study, a novel cross-linked COF-COF material (DPDA), enriched with nitrogen- and oxygen-containing functional groups, was synthesized and systematically evaluated for its ability to selectively adsorb Ga(III) from complex aqueous systems. DPDA exhibited outstanding adsorption performance under alkaline conditions and showed significantly enhanced Ga(III) uptake compared with its precursor. Kinetic analysis revealed that the adsorption process followed a pseudo-second-order model, indicating chemisorption played a predominant role. Langmuir isotherm fitting further demonstrated a monolayer adsorption pattern, yielding a maximum capacity of 112.4 mg·g −1 at 318 K. DPDA exhibited strong affinity for Ga(III) even in the presence of competing metal ions. In terms of reusability, DPDA maintained more than 67 % of its removal efficiency after 16 successive adsorption-desorption cycles, highlighting its structural robustness and practical applicability. Mechanistic analysis indicated that Ga(III) uptake by DPDA proceeds through a combination of coordination chemisorption, ion-exchange processes, and electrostatic interactions. DFT calculations identified stable adsorption configurations and quantified adsorption energies, confirming the synergistic contribution of -OH and -NH groups to Ga(III) binding. This work provides deeper insight into Ga(III) adsorption mechanisms and proposes a practical approach for its selective recovery from complex aqueous environments.
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DOI
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 2
·1-9
·
IF 5.479
Deng Ze-Hui,Wang Xia,Wang Xiao-Li,Gao Cui-Ling,Dong Liang,Wang Ming-Lin,Zhao Ru-Song
A magnetic covalent organic framework (Fe 3 O 4 @COF) with core–shell structure was fabricated at room temperature and used as an adsorbent for magnetic solid-phase extraction of polar endocrine-disrupting phenols (4-n-nonylphenol, 4-n-octylphenol, bisphenol A and bisphenol AF). The sorbent was characterized by transmission electron microscopy, FTIR, powder X-ray diffraction and other techniques. The main parameters governing the extraction efficiency were optimized. The phenols were quantified by HPLC with fluorometric detection. The method has attractive features such as low limits of detection (0.08–0.21 ng.mL −1 ), wide linear ranges (0.5–1000 ng.mL −1 ), and good repeatability (intra-day: 0.39%–4.99%; inter-day: 1.57%–5.21%). Satisfactory results were obtained when the developed method was applied to determine the four target pollutants in real world drink samples with spiked recoveries over the range of 81.3~118.0%. This indicates that the method is a powerful tool for the enrichment and determination of endocrine-disrupting phenols in drink samples.
A magnetite based covalent organic framework (Fe 3 O 4 @COFs) was synthesized with TPAB, TPA and Fe 3 O 4 . It was used for magnetic solid-phase extraction of endocrine-disrupting phenols from plastic-packaged tea drink samples coupled with liquid chromatography (LC) for determination.
研究领域:
分析化学
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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
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Qihui Sun,Jinyao Li,Hongyan Zhang,Xiong He,Baoshan Wu,Junwei Wang,Nasir Mahmood,Xian Jian
Traditional single-component microwave absorbers face the difficulties including the narrow absorption bandwidth and low absorption strength. Herein, we develop a novel dual-magnetic composite decorating with covalent-organic framework (COF of 1,3,5-triformylphloroglucinol and p-phenylenediamine: TpPa) and carbon hybrid to enhance microwave absorption performance. Namely, a dual-magnetic FeSiAl@(CoFe 2 O 4 /C)@TpPa core–shell structure with rich interfacial polarizations was prepared by the three main steps: firstly, the plate-like FeSiAl was decorated with the MOFs of ZIF-67. And then it was converted to FeSiAl@(CoFe 2 O 4 /C) after an annealing process under Ar. Lastly, the in-situ growth of COF (TpPa) was designed for enhanced microwave penetration into the interior of absorbers. The as-design dual-magnetic FeSiAl/CoFe 2 O 4 effectively favors to magnetic domain resonance resulting in the dual-magnetic coupling effects. Meanwhile, the multi-level structure formed by ultra-fine carbon in FeSiAl@(CoFe 2 O 4 /C)@TpPa enables magnetic-dielectric synergies and enriches the attenuation path as well. Furthermore, the accumulation of transferred charge at multiple interfaces provides a stronger relaxation polarization loss. The above positive factors collectively promote the high-performance microwave absorption with the reflection loss (RL) value up to −51.3 dB and the effective absorption bandwidth (EAB) covers 3.2–17.7 GHz by adjusting the thickness of absorbers. Therefore, this dual-magnetic/dielectric coupling approach provides an innovative strategy for fabricating advanced microwave absorbers.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Xiang-Tao Xuan,Hui Zhang,Hong-Li Wang,Jia-Le Yao,Jun Xu,Qiu-Ling Che,Yi Wang
Superhydrophobic textiles based on cellulose, a key biological macromolecule, are highly desirable for applications in extreme environments. In this study, we develop a multifunctional cellulose-based cotton fabric ( Gossypium hirsutum L.) by applying a facile one-step hydrothermal coating method, integrating covalent organic frameworks (COFs), silica nanoparticles (SiO 2 ), and perfluorooctyltrichlorosilane (POTS) onto the fiber surface to form a robust CF-COF/SiO 2 /POTS composite coating. The hierarchical micro/nanostructure modifies the cellulose surface, achieving a water contact angle of 155.4 ± 0.9° and a sliding angle of 7.9 ± 0.7°. Modern analytical techniques, including Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, confirm the molecular interactions between cellulose and the coating, revealing enhanced surface stability. The coated cellulose fabric exhibits robust chemical stability across acidic (pH 2), alkaline (pH 12), and saline (1 mol/L NaCl) conditions, mechanical durability after 50 adhesion-peeling cycles, five laundering cycles, and 820 h of sunlight exposure, and effective anti-icing behavior with reduced ice adhesion and rapid superhydrophobicity recovery post-icing (−18 °C, 12 h) via mild heating (60 °C, 5 min). Notably, the fabric undergoes an irreversible color change under UV–visible irradiation (300–1100 nm, 133.4 mW/cm 2 ), with spectroscopic analyses indicating photochemical oxidation of hydroxyl groups, yet retaining superhydrophobicity. This work presents a novel strategy for functionalizing cellulose-based textiles, offering durable self-cleaning, anti-icing, and photochromic properties for applications in protective clothing, outdoor gear, and anti-counterfeiting systems.
研究领域:
材料科学
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纺织工程
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表面化学
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纳米技术
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功能涂层
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智能材料
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-8
·
IF 16.6
Chi Hongbin,Liu Yang,Li Ziyi,Chen Wanxin,He Yi
Flexible covalent organic frameworks (COFs) have been studied for applications containing sorption, selective separation, and catalysis. How to correlate the microscopic structure with flexibility in COFs is a great challenge. Herein, we visually track the flexible deformation behaviors of single COF-300 and COF-300-AR particles in response to solvent vapour guests with dark-field microscopy (DFM) in an in operando manner. COF-300-AR with freely-rotating C-N single bonds are synthesized by the reduction of imine-based COF-300 consisting of rigid C=N double bonds without changing topological structure and crystallinity. Unexpectedly, we observe that the flexible deformation of COF-300 is extremely higher than that of COF-300-AR despite it bears many C-N single bonds, clearly illustrating the apparent flexibility decrease of COF-300 after reduction. The high spatiotemporal resolution of DFM enables the finding of inter-particle variations of the flexibility among COF-300 crystals. Experimental characterizations by variable-temperature X-ray diffraction and infrared spectroscopy as well as theoretical calculations demonstrate that the flexible deformation of COF-300 is ascribed to the pedal motion around rigid C=N double bonds. These observations provide new insights into COF flexibility.
研究领域:
材料科学
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化学
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 37
·375402
·
IF 3.5
Yingming Wang,Mingkai Li,Tianzhuo Wen,Guoxian Gu
The design and construction of three-dimensional covalent organic frameworks (3D COF) remains a major challenge, and it is necessary to explore new strategies to synthesize 3D COF with ideal structure. Here, we utilize two-dimensional covalent organic framework (2D COF) with allyl side chain to achieve interlayer crosslinking through olefin metathesis reaction, thereby constructing a 3D COF with cage-like structures. This new material named CAGE-COF has larger specific surface area and more open pore structure than the original 2D COF. The cathode material with CAGE-COF retained 78.7% of its initial capacity after 500 cycles, and the fading rate is 0.04% each cycle.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2020
·
IF 3.99
Xin Mi,Shuangxi Zhou,Ziming Zhou,Mohammadtaghi Vakili,Yue Qi,Ye Jia,Donghai Zhu,Wei Wang
Covalent organic frameworks (COFs) with great application potential in environmental remediation exist as the form of powder, which are difficult to separate and recycle. Two magnetic COFs with good recyclability were prepared through simple impregnation-precipitation method in this study. The prepared magnetic COFs were used for the adsorptive removal of diclofenac sodium (DCF). The introduction of hydroxyl group on magnetic COF (OH-MCOF) could greatly enhance its adsorption amount for DCF, and OH-MCOF was selected to study the effect of adsorption time, initial concentrations, solution pH and ionic strength on its adsorption for DCF, as well as its regeneration and reuse performance were investigated. In this study, the OH-MCOF had a high adsorption capacity for DCF of 203.4 mg/g based on the Langmuir model fitting, and exhibited quickly adsorption for DCF within 30 min. The adsorption efficiency was better than that of most reported adsorbents. Furthermore, the role of hydroxyl group on magnetic COF was highlighted through density functional theory (DFT) and electrostatic potential (ESP) calculation. After 5 cycles of regeneration, the OH-MCOF still maintained the same adsorption amount for DCF, showing good reusability and stability. This study reveals OH-MCOF with high removal and reusability in the further application of environmental remediation.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
·
IF 14.7
Gao Peng,Hu Yezi,Shen Zewen,Zhao Guixia,Cai Ruiqing,Chu Feng,Ji Zhuoyu,Wang Xiangke,Huang Xiubing
Consecutive uranium extraction from seawater is a promising approach to secure the long-term supply of uranium and the sustainability of nuclear energy. Here, we report an ultra-highly efficient strategy via studtite nanodots growth with impressive uranyl uptake capacity of ~ 154.50 mg/g from natural seawater in 12 consecutive days (i.e., average for ~ 12.875 mg/g/day). Uranyl can be extracted as studtite under visible light via the reaction between the adsorbed uranyl and the photogenerated H 2 O 2 with imine-based Covalent-Organic Framework photocatalysts. In detail, over Tp-Bpy, Tp-Bpy-2 and Tp-Py with multiple uranyl chelating sites, uranyl is found extracted as studtite nanodots which can be eluted readily, while over Tp-Bd and Tb-Bpy, uranyl is transformed into studtite nanorods that is more inert for elution. Abundant chelating sites of uranyl via structural regulation of COF photocatalysts are proved to facilitate the formation and efficient elution of studtite nanodots.
研究领域:
核能科学
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材料科学
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环境科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）