COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Dan Sun,Qilong Chen,Yi He,Yang Bai,Changhua Li,Rui Gou,Chuanfang Zhang,Xinbo Xu,Haichao Zhang
The main aim of this study was to exploit the advantages of dopamine and tetraaniline (TA) to enhance the physical barrier properties and active anti-corrosion performance of composite coatings ; in this study, the growth of polydopamine on the surface of Co-MOF enhanced its compatibility with waterborne epoxy, and Co-MOF-PDA-TA (MP-TA) was successfully synthesised by adding dopamine and tetraaniline via Michael addition , confirmed through characterisation methods such as Fourier-transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy. MP-TA can be added as a nanofiller additive to water-based epoxy coatings, and a detailed study on the corrosion resistance of the prepared composite coatings showed that the composite coating containing 0.50wt% MP-TA/WEC exhibits good anti-corrosion performance with an impedance modulus at low frequency (0.01 Hz) of 7.253 × 10 9 Ω cm 2 because TA not only prolongs the time required for corrosion ions to reach the interface but also forms a passivation film on the steel surface. Moreover, the reduced TA can be oxidised to EB or even LEB by releasing two electrons, which further promotes the formation of a passivation film, providing a good pathway for the application of MP-TA as a multifunctional additive.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Yichong Chen,Jinbing Cheng,Aihua Wang,Congbin Liu,Hailong Yan,Yang Qiu,Zhongzheng Wang,Paul K. Chu,Yongsong Luo
Electrospinning is carried out to fabricate Ti 3 C 2 T x @Co nanocomposite films composed of 2D Ti 3 C 2 -encapsulated Co nanoparticles derived from Co-MOF precursors. The unique 1D nanochain structure inherits not only the high electrochemical activity, but also excellent electron and ionic conductivity. The Co nanoparticles with good conductivity and MXene with high electrochemical activity improve the electrochemical properties giving rise to high capacity and good cycling stability. The Ti 3 C 2 flakes partially accommodate the volume changes during Li + insertion/extraction and the electrospinning technique prevents self-aggregation of Ti 3 C 2 flakes and aggregation of ZIF-67 nanoparticles, consequently producing a larger surface area and more active sites on the flexible anode. As a result, the MXene/Co composite has excellent properties such as a high reversible capacity of 422 mA h g −1 after 500 charging-discharging cycles at a current density of 1 A/g and retained capacity of 177 mA h g −1 at a rate of 5 A/g. The materials and strategy have large potential in commercial energy storage devices.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Ziyi Wang,Changyan Guo,Kefu Wang,Jiang Li,Jide Wang
Upgrading waste PET to prepare metal–organic frameworks (MOF) through chemical recycling provides new ideas and methods for PET recycling treatment and high value-added conversion. In this paper, Cobalt-based metal–organic frameworks (Co-MOF) were prepared from PET by one-pot solvothermal method without adding acids or bases. The prepared Co-MOF was used as a heterogeneous catalyst to catalyze the selective oxidation of ethylbenzene (EB) for the preparation of acetophenone (AP). When only tert-butyl hydroperoxide (TBHP) was used as the oxidizing agent without any additional solvents, 89% EB conversion and 94% AP selectivity were achieved, respectively. Moreover, the catalyst showed excellent stability with no significant deactivation under 5 cycles. In addition, the synthesized Co-MOF-10 also exhibits impressive conversion rates of 96% and 93% in benzyl alcohol and styrene oxidation, respectively. Compared with the Co-MOF prepared by commercial terephthalic acid (BDC), the Co-MOF-10 synthesized via the one-pot method using PET exhibits enhanced cost-effectiveness, environmental sustainability, and superior catalytic performance. The present study establishes a foundation for the conversion of plastic PET into valuable MOF and its subsequent application in C–H bond oxidation.
研究领域:
化学工程
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 1
·180
·
IF 4.6
Xiaojing Si,Yue Huang,Mei Han,Liqiang Luo
Dihydromyricetin (DMY), as the main active ingredient inAmpelopsis grossedentata, is a naturally occurring flavonoid that has attracted extensive attention for its multiple biological activities. For the quick and accurate measurement of DMY, a novel electrochemical sensor based on a glassy carbon electrode (GCE) modified with a cobalt metal-organic framework (Co-MOF) was proposed in this work. The Co-MOF was synthesized via a single-step hydrothermal process using Co(NO3)2·6H2O. Fourier infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy were used to study the morphology and structure of the synthesized Co-MOF. Utilizing differential pulse voltammetry and cyclic voltammetry methods, the effectiveness of DMY electro-oxidation on the Co-MOF/GCE was examined. The results showed that, in comparison to the bare GCE, the electro-oxidation peak current of DMY was considerably increased by the Co-MOF/GCE. The detection limit was 0.07 μM, and the peak current demonstrated two linear relationships in the ranges of 0.2−20 μM and 20−100 μM, with the linear equations of Ip (μA) = 0.4729c (μM) + 1.0822 (R2= 0.9913) and Ip (μA) = 0.0939c (μM) + 8.4178 (R2= 0.9971), respectively. The average DMY content inAmpelopsis grossedentatasamples was measured to be 3.275 μM, with a good recovery of 108.27% and a relative standard deviation value of 3.46%. The proposed method is simple, rapid and sensitive and can be used for the determination of DMY inAmpelopsis grossedentata.
研究领域:
分析化学
·
植物化学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANICA CHIMICA ACTA
·
2022
·
IF 3.118
Xian-Xian Ji,Liu Yang,Yu-Long Liu,Ying Fu,Fei Ye
The synergistic effect of graphene and doping elements is vital to improve the electrocatalytic performance. However, it is still a challenge to select appropriate elements for doping to improve the rate of hydrogen evolution reaction (HER). In this study, we prepared a highly efficient and promising electrocatalyst, namely CoMoO 4 /Co 2 Mo 3 O 8 @C , by a carburization process of metal–organic frameworks (MOFs) combined with doping molybdenum via simple hydrothermal and pyrolysis method. Compared with Co-MOF , CoMoO 4 /Co 2 Mo 3 O 8 @C exhibited excellent electrocatalytic performance with an overpotential as low as 120 mV at 10 mA·cm −2 and a Tafel slope as small as 69 mV·dec −1 for HER activity in 0.5 M H 2 SO 4 . The excellent performance of CoMoO 4 /Co 2 Mo 3 O 8 @C could be ascribed to the synergistic effect of CoMoO 4 /Co 2 Mo 3 O 8 and graphene coating, which facilitated charge transfer in HER activity. This work may provide novel perspectives for fabricating electrocatalysts composed of transition metal oxide and graphene based on MOFs for enhancing HER performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Chemosensors
·
2022
·Vol. 10
·期 11
·443
·
IF 4.229
Luyi Zhu,Qinan Zhou,Wenqing Shao,Zhenbo Wei,Jun Wang
A novel Co-based organic frameworks/carbon nanotubes/silicon dioxide (Co-MOF/CNTs/SiO2)-modified Au electrode was fabricated and taken as a platform for gallic acid (GA) detection. The composite combined the advantages of Co-MOF, CNTs and SiO2, and higher electrochemical response of Co-MOF/CNTs/SiO2-modified electrode indicated that the composite material exhibited satisfied the catalytic activity towards GA. Moreover, the electrochemical oxidation process of GA was deeply investigated on the surface of electrode based on computational investigations. Hirshfeld charges and condensed Fukui functions of each atom in GA were calculated. Besides, the catalysis of Co-MOF to GA was further investigated based on density functional theory. The quantitative determination of GA was carried out and showed a linear range between 0.05–200 μM, with low limit of detection. The sensitivity value of the self-assembled electrochemical sensor was calculated to be 593.33 μA cm−2mM−1, and the selectivity, reproducibility and stability of the gallic acid sensor were also confirmed in the study.Keywords:gallic acid;electrochemical;electro-oxidation;detection;density functional theory
研究领域:
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2025
·
IF 3.1
Li Quanyang,Yu Liang,Shen Lv,Fu Jiankun,Zhou Ru,Hao Min,Jiang Juncheng
Polypropylene (PP) is a widely used thermoplastic resin known for its strong properties, including chemical stability, electrical insulation, and high abrasion resistance. However, its low ignition point and rapid burning rate pose significant fire risks, necessitating the incorporation of flame retardants. In this study, cobalt metal–organic framework (Co-MOF), melamine polyphosphate (MPP), and expandable graphite (EG) were combined to enhance the flame retardancy of PP. The optimal blending ratio was determined, and the results showed that PP/MPP/2 mass% Co-MOF/15 mass% EG composites exhibited superior flame retardancy. These composites achieved a critical oxygen index (LOI) of 28%, a V-0 rating in the UL-94 test, and significantly reduced heat release and smoke production during combustion. The synergistic effect of MPP, Co-MOF, and EG facilitated the formation of a dense, thermally stable carbon layer, which effectively hindered flame propagation and improved fire safety. These findings provide valuable insights for the development of flame-retardant PP materials. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Tao Zhang,Xiaojuan Wang,Jie Gu,James M. Tiedje
Selective P O bond cleavage in organophosphorus pollutants under acidic conditions represents a key challenge in phosphatase-mimicking nanozyme design. Inspired by natural phosphatases, we designed and synthesized Zr x Co y -ZIF nanozymes featuring a Zr-N 4 coordination framework, achieving alkaline-free detoxification (t 1 / 2 =0.3 min, detoxification efficiency > 99 %). Theoretical analyses reveal that the oxygen-bridged proton shuttle activates interfacial water to supply protons for P O bond cleavage, while the Zr-Co electron transfer system reduces polarization energy barriers, enabling dual-site synergistic catalysis. Additionally, its magnetism facilitates material recovery, ensuring environmental friendliness. Notably, Zr x Co y -ZIF efficiently cleaves phosphodiester bonds and disrupts biofilms, removing > 90 % both Gram-positive and Gram-negative bacteria, with excellent antibacterial effects in real samples (lettuce, chicken, milk; removal rate > 85 %), demonstrating potential as a novel high-efficiency antimicrobial agent.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Qin Li,Jinghan Sun,Aiguo Kong,Rui Liu
Reasonable heterogeneous interface engineering is crucial for achieving efficient and robust oxygen reduction reactions (ORR). Herein, a ferrocene enhanced interface coupling catalyst has been successfully developed, which consists of cobalt‑nitrogen-doped carbon dodecahedra (Co@NC) with cobalt-ferrocene MOF nanosheets (Co-FcDC). The Co@NC/Co-FcDC catalyst demonstrates superior ORR electrocatalytic activity with a half-wave potential of 0.82 V and a good durability. This promoted performance is attributed to the Fc-enhanced interface coupling interaction between Co-FcDC and Co@NC, which optimizes the electron structure of Co nanoparticles (NP s), increases oxygen adsorption, and reduces the energy barrier for converting O-containing intermediates (*OH) into OH − . This research offers a valuable perspective for the reasonable construction of ferrocene-based heterogeneous interfaces for energy storage and conversion.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 8
·5882-5897
·
IF 9.5
Siyue Hui,Huanzhi Zhang,Guangpeng Xu,Junhao Zhang,Fen Xu,Lixian Sun,Xiangcheng Lin,Lei Ma,Hongliang Peng,Bin Li,Erhu Yan,Federico Rosei
Thermal insulation and temperature control are extremely important in numerous human activities. Traditional aerogels with low thermal conductivity are known to facilitate good insulation. Boron nitride (BN) aerogels consist of nanoscale nanofiber units with plentiful porous structures, possessing excellent thermal/electrical insulation and chemical stability. However, these porous materials cannot effectively block heat transmission, despite their low thermal conductivity. Therefore, it is necessary to develop a new insulation strategy and explore materials with excellent thermal insulation performance, with special attention to heat transmitted not only through air, but also through thermal regulation by thermal adsorption. Phase change materials (PCMs) are considered promising latent heat storage materials due to their large heat storage capacity, making them promising candidates for highly efficient thermal insulation. However, the flammability of organic PCMs and their susceptibility to leakage during the solid-to-liquid transition seriously limit their wide application. In this study we combined the dual-thermal insulation performance of BN fiber aerogels and PCMs and constructed novel flexible and multifunctional composites with excellent thermal insulation performance using Co-MOF nano-flower cross-linked BN aerogels as interconnected porous substrates to encapsulate paraffin wax (PW) PCMs. The composites exhibited the advantages of BN, Co-MOFs and PCMs, overcoming the drawbacks of single-component materials. The results showed that the latent-heat storage capacity of the BN/Co-MOF/PW composites reached 188.11 J g−1 and the resulting thermal conductivity was as low as 0.0397 W (m−1 K−1), due to high thermal insulation performance. The morphology, flexibility, mechanical performance, and flame retardancy of the constructed BN/Co-MOF/PW composites were systematically investigated, ensuring that the composites could be used for thermal insulation and flame-retardant applications.
研究领域:
材料科学
·
能源工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.4
Chen Jianjun,Wu Haowen,Ru Lei,Bai Hailong,Han Mingjie,Feng Hua,Men Jiying
In this work, surface molecularly imprinted polymers Co-MOF/CNT@MIPs were prepared based on metal-organic framework (MOF) and muti-walled carbon nanotubes (MWCNTs) as matrix, and norfloxacin (NOR) as template molecular. The structural characteristics of molecular imprinted polymer Co-MOF/CNT@MIP were confirmed by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS). The adsorption and selective recognition performances of Co-MOF/CNT@MIP for NOR were also investigated. The adsorption of Co-MOF/CNT@MIP for NOR reaches equilibrium at 300 min, and pseudo-second-order (PSO) model is more fit for adsorption kinetic. The adsorption capacity of Co-MOF/CNT@MIP for NOR reaches 78.6 mg/g with 1.5 mg/mL at 25℃ via the hydrogen bond interaction and “lock-key” imprinted cavities, and the D-R model is fit for adsorption isotherm. The adsorption amount decreases as increasing the temperature, which is an exothermic and spontaneous process. The imprinted polymer exhibits an excellent imprinted factor of 2.08 and high selective factor above 1.93, and it is satisfactory reusability for five cycles.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Dejian Li,Sisi Zhang,Xuan Feng,Hongjing Yang,Fei Nie,Wenyan Zhang
In this work, a metal organic framework material ([Co(L)(H 2 O) 2 ] n , Co-MOF) was synthesized by a facile hydrothermal method, and it was found that Co-MOF have a peroxidase-like activity. They can efficiently catalyze the chemiluminescence (CL) reaction between luminol and H 2 O 2 and enhance the CL signal significantly. The possible enhancement mechanism suggested that Co-MOF catalyzed the decomposition of H 2 O 2 into O 2 and increased the generation of •O 2 − . Based on these findings, a new highly sensitive glucose sensor was constructed combined with the luminol-H 2 O 2 -Co-MOF CL system and glucose oxidase. Under the optimal conditions, the method exhibited a good linear response to glucose in the range of 0.04˜8 μM with a detection limit of 1 × 10 -8 M. The method has been further applied in the quantitative determination of glucose in human serum and urine successfully.
研究领域:
分析化学
·
生物传感
·
材料科学
✓ 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）