Journal of Functional Biomaterials
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2024
·Vol. 15
·期 7
·185
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IF 5
Yu Wu,Sen Xu,Fengjuan Ding,Weibing Zhang,Haiyan Liu
In this work, a new type of FE-1 COF material is prepared by a reversible imine condensation reaction with diaminoferrocene and diaminodiformaldehyde as materials. The material is connected by imine bonds to form a COF skeleton, and the presence of plenty of nitrogen-containing groups gives the material good hydrophilicity; the presence of metal Fe ions provides the material application potential in the enrichment of phosphopeptides. According to the different binding abilities of N-glycopeptide and phosphopeptide on FE-1 COF, it can simultaneously enrich N-glycopeptide and phosphopeptide through different elution conditions to realize its controllable and selective enrichment. Using the above characteristics, 18 phosphopeptides were detected from α-casein hydrolysate, 8 phosphopeptides were detected from β-casein hydrolysate and 21 glycopeptides were detected from IgG hydrolysate. Finally, the gradual elution strategy was used; 16 phosphopeptides and 19 glycopeptides were detected from the α-casein hydrolysate and IgG hydrolysate. The corresponding glycopeptides and phosphopeptides were identified from the human serum. It proves that the FE-1 COF material has a good enrichment effect on phosphopeptides and glycopeptides.
研究领域:
分析化学
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蛋白质组学
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生物化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jie Zhang,Chengcheng Yuan,Yong Zhang,Changhong Sun,Jiaguo Yu,Liuyang Zhang
Photocatalytic hydrogen peroxide production offers a greener alternative, but its efficiency is limited by high carrier recombination. Covalent organic frameworks, with their highly ordered structures and tunable properties, are promising photocatalysts. However, their application in H 2 O 2 production has been constrained by the lack of effective strategies to enhance catalytic activity. In this study, BiOCl/COF (TFPB-BPY) S-scheme heterojunctions were prepared via a simple in-situ growth method. The heterojunction exploits the nitrogen-rich architecture and charge transport of the COF, combined with the broad light absorption and internal electric field of BiOCl. This synergy enables superior visible light absorption, efficient charge separation, and suppressed recombination. Mechanistic studies confirmed the S-scheme mechanism as the key to its enhanced performance. This work provides a scalable and eco-friendly strategy for improving COF-based photocatalysts through S-scheme heterojunctions, offering a pathway for sustainable H 2 O 2 production and advancing the rational design of photocatalysts for green energy applications.
研究领域:
材料科学
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环境科学
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能源科学
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DOI
PubMed
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2021
·
IF 6.064
Tengfei Liu,Wen Li,Chenyang Zhang,Wei Wang,Wenwen Dou,Shougang Chen
In this work, multi-layer stacked two-dimensional (2D) covalent organic framework of TpPa-1 was synthesized as nanocontainer to fabricate self-healing epoxy coating. The corrosion inhibitor of benzotriazole (BTA) was loaded into porous TpPa-1 (Tp: 1,3,5-Triformylphrogroglucinol, Pa-1: 1,4-phenylenediamine), and the load capacity was further improved by electrostatic adsorption. Then, 0.5 wt.% BTA/TpPa-1 and 0.5 wt.% TpPa-1 were added to the epoxy coating, respectively. The electrochemical Impedance Spectroscopy (EIS) test shown that after 60 days of immersion, the impedance of the BTA/TpPa-1/EP in low-frequency region was 6.45 × 10 8 Ω cm 2 , while the impedance corresponding to the TpPa-1/EP coating was 9.04 × 10 7 Ω cm 2 . In addition, in the localized electrochemical impedance spectroscopy (LEIS) test, as the immersion time was extended, the impedance of TpPa-1/EP coating at the defect continued to decrease, while the impedance at the defect of the BTA/TpPa-1/EP coating shown an upward trend, showing self-healing performance. This was due to the pH change when the metal at the defect is corroded, which caused the BTA to be released from the nanocontainer and adhered to the metal surface to form a protective film. The improvement of the anti-corrosion performance of BTA/TpPa-1/EP coating mainly comes from two aspects: (1) The good dispersion of TpPa-1 in EP coating improves the physical shielding effect of the coating; (2) The controlled release of BTA can Realize the continuous formation of the bare metal surface protective layer.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2024
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IF 4.3
Kun Chen,Chaoqun Ma,Guoqing Chen,Taiqun Yang,Hui Gao,Lei Li,Zichen Yang,Jun Cao,Chenkai Zheng,Longyao Ma
This study presents the design of a Surface-enhanced Raman scattering (SERS) substrate, COF@Ag, for the sensitive detection of Amoxicillin (AMX) in lake water and honey. Furthermore, the study investigates the role of covalent organic frameworks (COFs) in SERS detection. The characterization results demonstrate the capability of COFs to efficiently enrich Ag nanoparticles (AgNPs), resulting in a more concentrated distribution of hotspots and an enhanced electromagnetic field on the substrate. By employing density functional theory (DFT) simulation, the frontier electronic orbitals of COFs and AMX were analyzed, and the chemical bonds and weak interactions in the system were examined using the Interaction Region Indicator (IRI) method to propose potential enhancement mechanisms. In aqueous solutions, the linear range is 1 μg/L-30 μg/L, with a limit of detection (LOD) 0.279 μg/L. In lake water, the linear range span from 100 μg/L to 500 μg/L, with a detection limit of 8.244 μg/L. For honey, the linear range extend from 20 ng/g to 100 ng/g, with a detection limit of 2.917 ng/g. This method holds key significance in facilitating the rapid detection of amoxicillin and advancing the application of COFs in SERS.
研究领域:
分析化学
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材料科学
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环境科学
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食品安全
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Zihao Zhang,Xiaoyang Xu,Xuteng Xing,Xiaomi Tang,Xiangjing Zhang,Jie Chen,Yuelong Xu,Haichao Jiang
Large-area Co 2+ /ionic liquid (IL) co-modified porphyrin-COF nanofilm was prepared by the chelation Co 2+ ions on porphyrin-N and grafting IL on –OH groups in COF TAPP-DHPA skeleton respectively. This IL-Co-COF TAPP-DHPA self-supporting film can directly customized into interdigital electrodes, and assembled as flexible MSC-IL-Co-COF TAPP-DHPA devices. The MSC-IL-Co-COF TAPP-DHPA device exhibits the good energy storage properties, such as the high energy density of 67.2 mWh/cm 3 at 3.46 W/cm 3 , good cycling stability with capacitance retention of 91 % after 5,000 cycles. These outstanding performances can be explained by the fact that the chelated Co 2+ ions can provide the additional Faradaic redox reaction, and grafted long-chain IL can improve the charge accumulation capacity by pore channel segmentation and growing adsorbing H + active sites. Notably, the MSC-IL-Co-COF TAPP-DHPA owns the high anti-bending property, allowing for bending at different angles. This work can broaden the COF film application prospects in flexible, wearable electronic devices.
研究领域:
材料科学
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能源存储
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化学工程
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DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 3
·1-11
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IF 5.3
Liu Huamin,Li Chenghong,Wang Lina,Fang Lichao,Huang Hui,Deng Jun,Hu Yue,Li Mimi,Ran Xiaoping,Li Lulu,Zheng Junsong
A “signal-off” photoelectrochemical (PEC) sensing platform has been designed for the ultrasensitive detection of DNA methylation levels and multiple methylated sites. The platform employs tungsten trioxide and TpPa-1-COF loaded by gold nanoparticle (AuNPs@WO 3 @TpPa-1-COF) composite material as the photoactive component and p-type reduced graphene (rGO) as an efficient quencher. The PEC signal of AuNPs@WO 3 @TpPa-1-COF composite is effectively quenched in the presence of p-type rGO, because p-type rGO can compete with AuNPs@WO 3 @TpPa-1-COF to deplete light energy and electron donors. In addition, a hybrid strand reaction (HCR) amplification strategy fixes more target DNA and then combines with rGO-modified anti-5-methylcytosine antibody to facilitate ultrasensitive DNA methylation detection. Under optimal conditions, DNA methylation can be measured within a linear concentration range of 10 –14 to 10 –8 M, with an exceptionally low detection limit of 0.19 fM (S/N = 3). At the same time, the platform can conduct quantitative determination of multi-site methylation, with the linear equation △I = 44.19Log A + 61.43, and the maximum number of methylation sites is 5. The sensor demonstrates high sensitivity, excellent selectivity, and satisfactory stability. Furthermore, the proposed signal-off PEC strategy was successfully employed to detect DNA methylation in spiked human serum samples, with recoveries ranging from 93.17 to 107.28% and relative standard deviation (RSD) ranging from 1.15 to 5.49%. Graphical
研究领域:
生物化学
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分析化学
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材料科学
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DOI
PubMed
高影响因子
International Journal of Environmental Research and Public Health
·
2023
·Vol. 20
·期 2
·1393
·
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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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2020
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IF 5.065
Lijun You,Ke Xu,Guanjun Ding,Xinming Shi,Jumei Li,Shaoyun Wang,Jiabin Wang
Magnetic covalent organic framework modified by Fe 3 O 4 nanoparticles (Fe 3 O 4 @COF) were facile synthesized and used as adsorbent for the adsorption of bisphenols from aqueous solutions. The Fe 3 O 4 @COF is synthesized by catalyst-free Schiff base reaction of melamine and terephthalaldehyde, and synthesis strategy is flexible and controllable. The as prepared Fe 3 O 4 @COF was characterized by TEM , PXRD , TGA and BET analysis. The Fe 3 O 4 @COF possessed large specific surface area (335.2 m 2 /g), high chemical and thermal stability, and high saturation magnetization (49.6 emu/g), which in favor of rapid magnetic separation and efficient adsorption in the adsorption process. The effects of temperature, adsorbent dosage, pH and salt concentration on the adsorption of bisphenols (BPA and BPAF) were studied. The as-prepared adsorbent showed an excellent adsorption ability for BPA and BPAF , and the max adsorption capacity of BPA and BPAF could reach 140 and 290.4 mg/g. The adsorption kinetic fitted the pseudo-second-order kinetic model and the adsorption isotherm followed the Freundlich isotherm equation. Moreover, the Fe 3 O 4 @COF presented favorable re-use performance, which kept over 81.4% removal efficiency of bisphenols after five consecutive recycles. The high adsorption performance and reusability make the Fe 3 O 4 @COF a promising adsorbent for the removal of bisphenols.
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
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Zi-Ying Zeng,Dong-Dong Zhou,Shu-Tong Yang,Miao-Miao Su,Zhong-Hua Yang
This work synthesized a novel adsorbent by doping COF and MIL-125(Ti) in the nanoparticles Fe 3 O 4 . The obtained results showed that the doping of COF and MIL-125(Ti) had a positive effect on enhancing the specific surface area and adsorption capacity. Moreover, the adsorption process has been confirmed to follow the Langmuir model and pseudo-second-order kinetic, and the maximum adsorption capacity for tetracycline and tebuconazole was 138.1 mg/g and 87.73 mg/g, respectively. Finally, the adsorbent displayed an excellent adsorption performance in three kinds of actual environmental water samples. The mechanics of the adsorption process mainly involved π-π stacking interaction, hydrogen-bonding interaction, electrostatic interaction, and complexation interaction. In short, the synthesized magnetic adsorbent displayed a good application potential for removing tetracycline and tebuconazole from wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
DESALINATION
·
2024
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IF 8.3
Fan-xin Kong,Shi-yuan Zhang,Ding-wen Zhang,Ping Xia,Jin-fu Chen
Construction of covalent organic frameworks (COF) membranes on the polymeric substrate was challenging by interfacial polymerization (IP) process. In this study, COF-LZU1 membranes were fabricated by IP on the preheated PSf substrates to investigate the influence of substrate properties (i.e., pore size and porosity) on the COF-LZU1 layer formation. The substrates with tunable pore size (18.61 to 14.53 nm) and porosity (2.05 % to 0.42 %) could be obtained with the pretreating temperature of 20 °C to 50 °C. Preheated substrate altered monomer storage and diffusion, leading to the variations in crosslinking degree (14.89 % to 87.63 %) and observed thickness (142.9–575.9 nm). The preheated substrates endowed better growth conditions by inhibiting the COF-LZU1 intrusion into the substrates, and optimal COF 40°C membrane had water flux of 6.57 L m −2 h −1 , and Na 2 SO 4 rejection ratio of 90.9 %. The rejection ratio of pharmaceuticals by COF-LZU1 membranes was low due to adsorption. Correlation analysis showed that the C N bond content was unfavorable for absorption ( P < 0.05), and the increase of crosslinking and crystallinity of the COF-LZU1 layer will be beneficial to boost the pharmaceutical rejection. This work provided a facile method and valuable insight for the COF-LZU1 membrane fabrication to enhance desalination and pharmaceutical removal.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Shi Benbing,Pang Xiao,Li Shunning,Wu Hong,Shen Jianliang,Wang Xiaoyao,Fan Chunyang,Cao Li,Zhu Tianhao,Qiu Ming,Yin Zhuoyu,Kong Yan,Liu Yiqin,Zhang Mingzheng,Liu Yawei,Pan Feng,Jiang Zhongyi
The idea of spatial confinement has gained widespread interest in myriad applications. Especially, the confined short hydrogen-bond (SHB) network could afford an attractive opportunity to enable proton transfer in a nearly barrierless manner, but its practical implementation has been challenging. Herein, we report a SHB network confined on the surface of ionic covalent organic framework (COF) membranes decorated by densely and uniformly distributed hydrophilic ligands. Combined experimental and theoretical evidences have pointed to the confinement of water molecules allocated to each ligand, achieving the local enrichment of hydronium ions and the concomitant formation of SHBs in water-hydronium domains. These overlapped water-hydronium domains create an interconnected SHB network, which yields an unprecedented ultrahigh proton conductivity of 1389 mS cm −1 at 90 °C, 100% relative humidity.
研究领域:
材料科学
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化学
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能源
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Chunhua Li,Luqian Bao,Yubo Shi,Zhehang Tian,Yixin Ji,Mengyao Cui,Zhilei Zhao,Xianyou Wang
A hollow heterojunction of W-Zr-MOF-NH 2 @TpTt-COF (WZT) was fabricated by combining etched W-Zr-MOF-NH 2 with TpTt-COF. WZT, synthesized through acid etching and hydrothermal methods, showed better tetracycline degradation than pure W-Zr-MOF-NH 2 and pure TpTt-COF due to its larger specific surface area and more active sites. The surface of WZT contains abundant oxygen vacancies (OVs) that capture electrons, promoting the separation of photogenerated e - -h + pairs and increasing WZT’s photocatalytic activity. WZT (1:1, mass) showed 87% degradation of tetracycline under 300 W Xenon lamp irradiation. The results of cycling experiments demonstrated the high stability and reusability of WZT (1:1), making it feasible for production. The excellent photocatalytic degradation of tetracycline by WZT (1:1) originates from the formation of heterojunctions and the presence of surface OVs, which reduces the strong photogenerated e - -h + complexation efficiency. Possible photocatalytic degradation mechanisms are proposed while demonstrating the formation of Z-scheme heterojunction in WZT, which aligned with the experimental results of electron spin resonance (ESR). The tetracycline oxidative decomposition process involves the participation of •OH, 1 O 2 , • O 2 - , e - , and h + as proven by ESR and radical trapping experiments. This work proposes a research idea to prepare high-performance photocatalysts with MOF@COF type, featuring OVs-rich and Z-scheme heterojunctions.
研究领域:
材料科学
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环境科学
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光催化技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）