SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yuling Yang,Xiaoli Zeng,Zhixiang Zeng,Linghui Wang,Ping Zhu,Lei Tang,Lijing Zhu
Porous membranes have been fabricated and modified for the separation and purification of wastewater. Although they always suffer from fouling caused by various materials such as oils, dyes, and antibiotics. It is difficult to deal with the boring membrane fouling by one antifouling strategy including hydrophilicity/underwater superoleophobicity. In this work, a synergistic antifouling mechanism combining low oil adhesive underwater superoleophobicity and excellent persulfate advanced oxidation processes (PS-AOPs) performances was developed by facilely loading ZIF-67 catalysts on polypropylene (PP) membranes. The as-prepared composite membranes have stable underwater superoleophobicity and low oil adhesion, which can efficiently separate oil from oil-in-water emulsion and prevent oil adhesion. Moreover, the ZIF-67 catalysts on the composite membranes have excellent degradation performances against various foulants such as methylene blue (MB), tetracycline (TC), and levofloxacin (LVFX), which endow the composite membrane with enhanced antifouling properties during the separation of an oil-in-water emulsion containing MB, TC, and LVFX. The synergistic antifouling mechanism of low oil adhesive underwater superoleophobicity and advanced PS-AOPs provides a facile and efficient strategy for improving the antifouling of the porous membranes in real wastewater purification.
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Biyu Huang,Haopeng Zhang,Jirui Qu,Gaoyuan Li,Hongbo Zhao,Lei Liu,Chuanmei Jiao,Xilei Chen
Exceptional fire safety, mechanical flexibility, ultraviolet (UV) resistance, and transparency are critical characteristics for thermoplastic polyurethane (TPU) materials in rapidly evolving industrial applications. Nevertheless, achieving a harmonious balance among these properties remains a significant challenge. In this paper, bio-based phytic acid/chitosan intumescent flame retardant (CaCS@PA) and cobalt metal-organic framework (ZIF-67) were incorporated into TPU, forming a densely crosslinked network through non-covalent interactions including hydrogen bonding and π-π stacking. The resulting TPU/ZIF-67-CaCS@PA composites show significant fire safety performance, with a 49.8% reduction in peak heat release rate and a 30.0% decrease in peak smoke production. Analysis of the condensed and gas phases indicated that the flame-retardant mechanism of ZIF-67-CaCS@PA primarily relies on the ability of ZIF-67 to influence the migration of intumescent flame retardant (IFR) gases and catalyze carbonization. This process accelerates the formation of a highly graphitized, thermally stable, and compact char layer, which acts as an effective protective barrier. Owing to the synergistic effect of supramolecular interactions, the tensile strength and elongation at break of the TPU composites were significantly enhanced to 39.6 MPa and 787.4%, representing increases of 155.6% and 27.7% prior to the pure TPU, respectively. Additionally, TPU/ZIF-67-CaCS@PA displays excellent transparency and UV resistance, effectively mitigating aging, yellowing, and strength degradation under UV exposure. This study successfully achieved a desirable balance between fire safety, mechanical performance, UV shielding, and transparency in TPU composites, offering valuable insights and potential advancements for both industrial applications and academic research.
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高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Lin Fan,Xuemei Wang,Zhen Zhang,Rao Peng,Weibo Li,Dong Xu,Xinzhen Du,Xiaoquan Lu
Methyl parathion (MP) is a highly toxic organophosphorus pesticide and poses a serious threat to food safety and public health. Herein, an integrated sensing platform combining hollow Mn-doped ZIF-67 with carboxylated carbon nanotubes to form a heterojunction (H-Mn/ZIF-67@COOH-CNTs) was successfully fabricated for sensitive recognition and ultrafast removal of MP. The constructed sensing platform demonstrated excellent analytical performance for MP under optimized conditions, featuring a broad linear range of 0.3–100 μM and a low detection limit of 0.024 μM. Furthermore, H-Mn/ZIF-67@COOH-CNTs achieved rapid removal of MP. The Langmuir fitting yielded a theoretical maximum adsorption capacity of 584.8 mg·g −1 , while a removal efficiency of 92.52% was achieved within 5 min. This research provides a reliable platform for the sensitive detection of MP in fruits and vegetables and its rapid removal from aqueous solutions, while offering novel insights for designing high-performance electrocatalysts in environmental monitoring and food safety testing.
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高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 3
·779-789
·
IF 2.936
Guo Guangkai,Zhong Dazhong,Zhao Tao,Liu Guang,Li Jinping,Zhao Qiang
It is important to develop active, stable, and cost-effective electrocatalysts for highly efficient overall water splitting. Metal organic frameworks were considered as efficient precursors for overall water splitting catalysts. In this paper, NC/Ni–Co 3 O 4 @Co 1−x S with small size is obtained from ZIF-67. NC/Ni–Co 3 O 4 @Co 1−x S materials exhibit superior overall water splitting properties, with a low overpotential of 170 mV for the hydrogen evolution reaction at 10 mA cm −2 and 210 mV for the oxygen evolution reaction at 10 mA cm −2 and long-term stability. Furthermore, the overall water splitting only requires 1.64 V to drive the current density of 10 mA cm −2 , when the NC/ Ni–Co 3 O 4 @Co 1−x S are used as both anode and cathode. NC/Ni–Co 3 O 4 @Co 1−x S has excellent electrocatalytic activity due to its nanosheet structure, which greatly increases the electrochemically active surface area and the NC/Ni–Co 3 O 4 @Co 1−x S has good electrical conductivity and abundant Co 3+ sites, so the electrocatalytic activity is significantly enhanced. This study provides a new idea for the design and synthesis of novel composite electrocatalysts. Graphical
研究领域:
材料科学
·
电化学
·
能量转换
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纳米技术
·
催化
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Xinyuan Zhao,Hui Pan,Wenwen Chen,Wei Zhang,Chuanxi Liu,Mengjie Wang,Ming Shang,Cuijuan Wang
High index facets of Au TOHs/ZIF-67/PTFE enables good sensitivity. • Supports air sampling and testing suitable for on-site settings. • Applicable to both airborne and aqueous samples for versatile monitoring. • Rapid detection (<5 min) for practical use. Monitoring of pesticides in air and water is essential for assessing occupational exposure and ensuring environmental safety. In this study, an integrated point-of-use (POU) surface-enhanced Raman scattering (SERS) platform based on a high-index Au trisoctahedrons (Au TOHs)/zeolitic imidazolate framework-67 (ZIF-67)-decorated polytetrafluoroethylene (PTFE) membrane was developed for the rapid sampling and in situ detection of carbaryl (CBR), diquat (DQ), and paraquat (PQ) in air and water. The high-index facets of Au TOHs generate abundant plasmonic “hot spots”, thereby enhancing the sensitivity of SERS, while the porous PTFE film and ZIF-67 provide efficient analyte enrichment. The entire detection process was completed within 5 min. The bifunctional SERS-active substrate exhibited good thermal stability, spatial uniformity, reproducibility, and long-term stability. Strong linear relationships between SERS intensity of characteristic peaks and logarithmic analyte concentrations were obtained for CBR, DQ, and PQ in airborne and aqueous environments, with detection limits of 0.0044–0.94 ppb. In addition, the platform demonstrated good selectivity against interfering pesticides and satisfactory recovery rates. The results were consistent with conventional analytical methods, confirming the reliability of the proposed approach. This work provides a promising strategy for rapid on-site monitoring of pesticide contaminants in environmental media. Download: Download high-res image (620KB) Download: Download full-size image
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高影响因子
ChemCatChem
·
2017
·Vol. 10
·期 4
·796-803
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IF 4.803
Shi Feng,Xingyue Li,Jia Huo,Qiling Li,Chao Xie,Tingting Liu,Zhigang Liu,Zhenjun Wu,Shuangyin Wang
Graphical Porous carbon electrode : CoS 2 @N/S-codoped porous carbon is prepared through an electrodeposition–ZIF conversion–sulfuration strategy. The loading of active sites can be controlled easily by varying the electrodeposition time. The resulting material can be employed directly as a working electrode for the hydrogen evolution reaction and shows an excellent catalytic activity and stability. A convenient, controllable method to fabricate an electrode is necessary to achieve the practical application of a hydrogen evolution reaction (HER) catalyst. In this work, an electrodeposition–ZIF conversion–sulfuration strategy is developed to produce a CoS 2 @N/S-codoped porous carbon (CoS 2 @NSC/CFP) to drive the HER efficiently. CoS 2 @NSC/CFP was prepared by the electrodeposition of Co(OH) 2 on a carbon fiber paper followed by conversion into ZIF-67 and subsequent sulfuration with sulfur. The loading of electroactive components can be controlled easily in the range of 0.7–10.0 mg cm −2 by varying electrodeposition time from 5 min to 2 h. The resulting material can be employed directly as a working electrode for the HER and it shows an excellent catalytic activity and stability with an overpotential of 95 mV at 10 mA cm −2 and 158 mV to reach 100 mA cm −2 in an acidic medium. The high efficiency is related intimately to the high dispersion of ultra-small CoS 2 nanoparticles, heteroatom-codoping, and the 3 D porous network configuration of the carbon fiber paper.
研究领域:
材料科学
·
电化学
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高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 15
·e202200438
·
IF 4.782
Beibei Yang,Mengjiao Shao,Yufeng Xu,Yanyan Du,Hualing Yang,Duan Bin,Baohong Liu,Hongbin Lu
Graphical A novel electrochemical sensor based on core-shell ZIF-8@ZIF-67-derived Co nanoparticles/N-doped carbon nanotube polyhedron composites has been designed for the efficient determination of antibiotic drug chloramphenicol. In this work, we developed a highly selective detector towards the antibiotic drug chloramphenicol (CAP) using Co nanoparticle, which are grown in situ on N-doped carbon nanotube polyhedra (Co@NCNP), which are obtained by a pyrolysis strategy derived from core-shell ZIF-8@ZIF-67. Physical characterization verified that metal-organic framework (MOFs)-derived Co@NCNP nanocomposites present a nanotube structure on their mesoporous polyhedron surface. As a result, the as-prepared Co@NCNP can be used as a sensitive electrochemical sensor for chloramphenicol detection, and the modified electrode is also studied by electrochemical methods such as electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and differential pulse voltammetry (DPV). When compared with single ZIF-67-derived electrode, the Co@NCNP displays a higher electrocatalytic activity in the presence of chloramphenicol. Moreover, an excellent performance with a linear response range of 5–268.83 μM and a low detection limit of 0.5 μM (S/N=3) is observed for the Co@NCNP modified electrode. Finally, the fabricated chloramphenicol sensor achieves a good anti-interference ability, stability, excellent repeatability, and remarkable reproducibility. The sensor also could be applied in human serum to determine of chloramphenicol with a satisfactory result.
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高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Jiongfan Wang,Lingling Chen,Xin Chen,Xinyu Li,Jianrong Xiao
Lithium-sulfur (Li-S) batteries receive considerable attention for their high energy density, but their slow reaction kinetics and poor shuttle effects raise concerns. Here, synthesized V 2 O 3 spheres were used as substrate templates, and ZIF-67 particles were grown on the surface of V 2 O 3 by in-situ growth method. ZIF-67 was calcined at high temperature to form N-doped porous carbon attached to the surface of V 2 O 3 spheres (Co-NC@V 2 O 3 -sp). The hollow structure of V 2 O 3 spheres provided abundant buffer space for sulfur volume expansion and enhanced the stability of the battery cycle. In addition, the great pore volume and specific surface area resulted in abundant active physical and chemical sites, the strong chemical adsorption of V 4+ effectively trapped polysulfides , and the cobalt nanoparticles on the surface effectively consolidated the active sites. The rapid transformation between shuttle effect and polysulfides were limited by physical coordination and chemisorption, respectively. Owing to this double synergistic effect, the prepared composites had an initial discharge capacity of 1483 mAh g −1 (0.1 C). The initial specific capacity reached 1002 mAh g −1 (0.5 C), and it achieved 645 mAh g −1 after 500 cycles. These results showed that Co-NC@V 2 O 3 -sp has high electrochemical function in Li-S batteries.
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高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 10
·2491
·
IF 5.076
Ruiying Wang,Mengran Lou,Jie Zhang,Zhipeng Sun,Zhiqian Li,Pengtao Wen
It is of prime importance to develop anode electrocatalysts for direct methanol fuel cells (DMFCs) with good performance, which is critical for their commercial applications. Metal-organic framework (MOF)-derived carbon materials are extensively developed as supports of catalysts. Herein, Co embedded nitrogen-doped carbon nanotube hollow porous carbon (Co-NCNT-HPC) derived from MOFs have been fabricated, which were synthesized by pyrolyzing at an optimized temperature of 800 °C using ZIF-8@ZIF-67 as a precursor. The presence of ZIF-8@ZIF-67 ensures the doping of nitrogen and the large specific surface area of the support materials at high temperatures. A Pt/Co-NCNT-HPC800 sample, which was synthesized using Co-NCNT-HPC800 as a support, showed an enhanced mass activity of 416.2 mA mg−1Ptfor methanol oxidation reaction (MOR), and the onset potential of COadoxidation of 0.51 V, which shifted negatively about 0.13 V compared with Pt/C (20%). Moreover, the Pt/Co-NCNT-HPC800 sample exhibits high stability. This work provides a facile strategy for MOF-derived carbon materials to construct advanced electrocatalysts for MOR.Keywords:metal-organic frameworks;N-doped carbon nanotube;hollow porous carbon;Pt-based catalysts;direct methanol fuel cells
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PubMed
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 9
·5923-5935
·
IF 5.044
Yang Yingying,Zhang Shiyu,Huang Wei,Guo Zengpei,Huang Jingjing,Yang Hongjun,Ye Dezhan,Xu Weilin,Gu Shaojin
In this study, a multifunctional cotton fabric with durable superhydrophobic, antibacterial, and UV resistance properties was prepared by in situ growth of zeolitic imidazolate framework-67 on cotton fabric surface, followed by polydimethylsiloxane modification. The as-obtained multifunctional cotton fabric not only showed superhydrophobicity with a water contact angle of 153.0° ± 2.7°, but also displayed good UV resistance with a UV protection factor value of 32. Furthermore, the as-obtained cotton fabric exhibited excellent antibacterial activities against S. aureus and E. coli . Besides, the as-prepared multifunctional cotton fabric had good resistance to mechanical abrasion. Consequently, this multifunctional fabric could be potentially applied to antibacterial and anti-ultraviolet field. Graphic abstract
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高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Kun-Kun Lu,Xiu-Feng Song,Lian-Hua Xu,Wen-Li Xin,Dan Shan
Design and synthesis of highly effective catalysts for electrochemical oxygen reduction reaction (ORR) with low cost is of great significance due to the purpose of energy conversion and storage. Herein, we report a facile solvothermal method to prepare ultrafine cobalt phosphide (CoPx)-doped Co-based zeolitic imidazole framework (CoPx/ZIF-67). The one-pot synthesis of CoPx/ZIF-67 involves an oxygen-free sealed room-temperature reaction, in which the high chemical activity of rich defect sits in 2D black phosphorus quantum dots (BPQDs) endows edge-selective coordination /reduction of Co ions. Carbonization of CoPx/ZIF-67 at 800 °C can produce CoPx-N-doped porous carbon composites (CoPx-NPC). The as-prepared CoPx-NPC retains the intrinsic morphology of rhombic dodecahedrons, similar to that of NPC derived from ZIF-67. The ultrafine CoPx doping causes chemical and electronic modulation and offers more active electrocatalytic sites etc., so that CoPx-NPC possesses enhanced ORR performance in terms of positive onset-potential (∼−0.06 V vs. SCE), large diffusion limiting current density (−4.703 mA cm −2 ), high stability, as well as the accelerated reaction kinetics.
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高影响因子
LANGMUIR
·
2025
·
IF 3.9
Zongjie Li,Tingting Shi,Wenwen Wu,Xuerui Zhao,Miao Zheng,Naipu He
Graphene oxide (GO)/polydopamine (PDA) hydrogels (GPDH) were sequentially immersed in a methanol solution of Co(NO3)2·6H2O and 2-MIM to prepare GO/PDA/ZIF-67 aerogels (GPDZxAG, where x represents the molar ratio of 2-MIM to Co2+). The hierarchical structure consisting of GO/PDA networks and ZIF-67 crystals was established in the resulting aerogels, and the ZIF-67 crystals with a regular morphology were not aggregated obviously. The size of ZIF-67 crystals in aerogels was modulated by the molar ratio of the ligand to metal ion. The ZIF-67 crystallite size, calculated by the Williamson–Hall equation, decreased with an increase in the concentration of 2-MIM. Additionally, the aerogels exhibited effective absorption capacity for CO2, and the equilibrium capacity of GPDZ32AG for CO2 was 5.04 mmol/g under an initial pressure of 400 kPa at 298.15 K. Compared with those of ZIF-67 and GO/PDA aerogel, the equilibrium adsorption capacity of GPDZ32AG for CO2 was increased by 133% and 83%, respectively. After five adsorption cycles, GPDZ32AG maintained 85% of its initial efficiency. The adsorption mechanism was explored by the kinetic model and Langmuir model. The results indicated that absorption of aerogels for CO2 was primarily dependent on chemical processes and fitted the Langmuir model.
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PubMed
高影响因子
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