CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Muyao Li,Xiangming Zhu,Linghui Yin,Shasha Feng,Zhaoxiang Zhong,Weihong Xing
The simultaneous removal of particulate matter (PM) and toxic gases (SO 2 , NO x , VOC S , etc.) remains a critical challenge in air pollution control. To address this, we developed a multifunctional zeolitic imidazolate framework-8 (ZIF-8)/polystyrene (PS) nanofiber membrane (ZIF-8/PS NFM), forming a hierarchical porous (micro-/ meso -/macroporous) structure for efficient PM capture and SO 2 adsorption. As a representative metal-organic framework, ZIF-8 offers exceptional gas adsorption capability due to its high specific surface area and uniform micropores. The incorporation of ZIF-8 nanoparticles into PS nanofibers enhanced the BET surface area (51 to 175 m 2 ·g −1 ), porosity (0.148 to 0.190 m 2 ·g −1 ), and tensile strength (0.24 to 1.45 MPa). In PM filtration tests, the optimized ZIF-8/PS NFM achieved outstanding removal efficiencies of 99.73 % (PM 0.3 ) and 99.96 % (PM 2.5 ), while maintaining low pressure drop (83 Pa and 27 Pa, respectively). Moreover, the membrane demonstrated a remarkable SO 2 adsorption capacity of 1370 mg·g −1 at 55 % relative humidity, attributed to its high surface area and abundant unsaturated Z n 2+ sites. This work provides a promising strategy for the synergistic capture of PM and SO 2 with high efficiency and stability.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 16
·7384-7393
·
IF 2.7
Wanyu Lu,Qijin Tang,Huajing Cheng,Shudi Li,Cailong Zhou,Hao Yang
The potential of bionic-inspired superhydrophobic membranes in the field of oil–water separation is significant. In this study, tannic acid induced the rhombohedral crystal form of ZIF-8 to grow in situ on a nylon membrane, resulting in the formation of a layered micro-nano structure. As a result, we successfully prepared a multifunctional composite membrane with exceptional underwater superoleophobicity and oil anti-adhesion. The composite membrane demonstrated an impressive separation flux for layered oil–water mixtures, reaching up to 4851.2 L m−2 h−1. Furthermore, when dealing with surfactant-free oil-in-water emulsions, the separation efficiency exceeded 99.0%. Because ZIF-8 is positively charged, the composite membrane exhibits different separation fluxes in the presence of different surfactants. For SDS stabilized toluene emulsion in water, the maximum separation flux of the composite membrane is 1307.4 L m−2 h−1. The membrane also has good tolerance to alkali and salt substances and is easy to recycle and reuse. Consequently, the ZIF-8 composite membrane has significant potential in effectively separating oil–water emulsions.
✓ 已验证
产品关联
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Zhiqiang Shan,Hengzhong Fan,Qiao Tian,Xiaohua Jia,Haojie Song
The porous structure and flexible crystal deformation ability of ZIF-8 provide ideas for the preparation of new inorganic nano-lubrication additives. Herein, the polydopamine (PDA) armor was coated on ZIF-8 surface to prevent its decomposition in water. The abundant active groups on the ZIF-8 @PDA surface promoted its strong mechanical anchoring on the surface of graphene oxide (GO) and improved the dispersion stability of nano-components in pure water. The nanoparticles and GO fragments released under mechanical and thermal action repair the broken tribofilms, and the flexible deformation of ZIF-8 nanocrystals in friction interface leads to the dispersion of frictional energy, resulting in the greatly reduction of friction coefficient and wear scar width of engineering steel surface (reduced by 82% and 83%).
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lei Zhang,Yong Zhao,Hao Yu,Liang Chen,Xiang Liu,Ailing Zhang,Zhibin Deng,Jian Zhen Ou
Graphene oxide (GO) membranes hold promise for selective CO 2 adsorption over N 2 due to their carboxyl groups, making them attractive for flue gas CO 2 capture. However, challenges such as limited carboxyl content, flexible nanosheets, and dense layer stacking hinder their N 2 /CO 2 gas selectivity, pressure resistance, and permeability. In this study, we introduce a specific sub-nanometer framework structure within GO membranes by in-situ growing ZIF-8 nanocrystals. This novel approach, achieved through simultaneous infiltration of zinc nitrate and 2-methylimidazole precursors on both sides of the membrane, enhances CO 2 capture and pressure resistance capabilities of resulting ZIF-8@GO composite membranes. Additionally, the incorporation of carboxylated wrinkled graphene (WG) and ethylenediamine (EDA) cross-linking agent molecules improves CO 2 capture capability and introduces reinforced porous structures to enhance permeability. Experimental results demonstrate remarkable permeability, selectivity, and pressure resistance of the prepared ZIF-8@EDA-GO/WG composite membranes. Under a gas pressure of 0.2 MPa, permeability reaches 1850 GPU, with theoretical selectivity for N 2 /CO 2 single gas and separation factors for mixed gases of 18.3 and 32.3, respectively, surpassing conventional GO membranes (3 GPU, 1.1, and 1.2). Even under elevated air pressure conditions (1.2 MPa), the composite membranes maintain a theoretical selectivity of 13.4. Our CO 2 capture membrane design strategy not only advances the development of functional membranes but also contributes to mitigating CO 2 emissions from flue gas, thereby combating global warming.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Haoyang Wang,Jun Wang,Huamin Chen,Xinhai Fu,Jiaqi Fu,Yanqi Huang,Yang Zhang
In this study, we develop a filter paper-supported Ag nanowire (AgNWs) substrate coated with a tunable layer of zeolitic imidazolate framework-67 (ZIF-67) metal-organic framework (MOF) for surface-enhanced Raman scattering (SERS) applications. The thickness of the ZIF-67 layer is precisely controlled by adjusting the soaking time, allowing us to investigate the influence of MOF thickness on SERS performance using probes with different sizes. Sensitivity for large, impenetrable molecules such as thiram and rhodamine 6G (R6G) are primarily governed by localized surface plasmon resonance (LSPR), while smaller, penetrable molecules like 4-mercaptobenzoic acid (4-MBA) exhibit enhanced sensitivity driven by charge transfer (CT) effects due to their ability to penetrate the MOF layer. A finite-difference time-domain (FDTD) simulation reveals that the porous structure of ZIF-67 facilitates electric field propagation to the probe, maintaining significant LSPR effects even beyond 200 nm from the AgNWs. Practical applicability is demonstrated using a wiping mode to detect thiram spiked on apple surfaces, with reliable linear detection achieved across a wide range of concentrations. This study underscores the potential of MOF-based hybrid SERS substrates for real-world applications, leveraging the complementary roles of CT and electromagnetic (EM) mechanisms to enhance sensitivity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Yangyang Liu,Fengdi Tu,Ziyu Zhang,Zigang Zhao,Pan Guo,Lixiao Shen,Yunlong Zhang,Lei Zhao,Guangjie Shao,Zhenbo Wang
Iron and nitrogen co-doped carbon (Fe/N/C) electrocatalysts have great potential to catalyze the kinetically slow oxygen reduction reaction (ORR). Unfortunately, the ORR performance of existing Fe/N/C catalysts is seriously hindered by the insufficient density and accessibility of the atomic Fe-N x moieties. Herein, the carboxylate (OAc) molecular scissor is proposed to tailor Fe doped zeolitic-imidazolate-framework-8 (ZIF-8) at atomic scale and construct a multi-dimensional concave Fe@NC catalyst structure (Fe@MNC-OAc). This molecular scissoring strategy imparts Fe@MNC-OAc with dense accessible active sites, multidimensional mass transfer pathways, hierarchical porous structure, and entangled carbon nanotubes network. Therefore, the tailored Fe@MNC-OAc electrocatalyst exhibits excellent ORR activity in acidic media with a half-wave potential of 0.838 V, which is comparable to state-of-the-art non-precious metal catalysts. When assembled as cathode catalyst in a H 2 -O 2 proton exchange membrane fuel cell, it delivers a peak power density of 903 mW cm −2 . This work provides a new approach to tailoring the catalyst architecture and improving the accessibility of active sites.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jiang Teng,Yuheng Liu,Pei Li,Tianqiang Liu,Xiaoqiang Liu
Herein, a novel recyclable composite microsphere PnBC/ZIF-8-CNs was successfully synthesized by incorporating the zeolitic imidazolate framework-8 (ZIF-8) into 3-aminophenylboronic acid modified bacterial nanocellulose microspheres (PnBC-MS). The structural characteristics were characterized with scanning electron microscopy (SEM), transmission electron microscopy (TEM) as well as element energy X-ray spectroscopy (EDS) mapping, X-ray diffraction (XRD), fourier transform infrared spectrometer (FT-IR), thermogravimetric analysis (TGA), XPS (X-ray photoelectron spectroscopy), and brunauer-emmett-teller (BET). The data showed that adsorption of PnBC/ZIF-8-CNs accorded with the pseudo-first-order kinetic model with spontaneous and endothermic process. The maximum adsorption capacity of tetracycline (1564.44 mg/g) enhanced by 1.2–5 folds compared with other adsorbents containing ZIF-8. The adsorption rate maintained at 81.25 % after five cycles of adsorption-desorption. The practical removal efficiency of tetracycline from real hoggery wastewater by PnBC/ZIF-8-CNs reached 89.77 %. Overall, these features suggested that PnBC/ZIF-8-CNs had simple preparation process, high removal efficiency and good reusability, and it will be a promising adsorbent for the actual antibiotics removal in water.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Qun Wang,Binjie Xin,Yifan Wang,Guangtao Zan,Shengyou Li,Kaiying Zhao
Oiled wastewater generated from industrial processes inflicts significant harm on the environment, posting a pressing need for affordable materials that provide prospect for effective oil-water separation and the recovery of valuable oil resources from such wastewater. The incorporation of zeolitic imidazolate framework (ZIF) onto the commercial cotton fabric, due to its porous structure and adjustable properties, offers a promising solution to this challenge. In this work, a cotton fabric with multifunctionalities was designed by in situ growing ZIF-67 onto cotton (ZIF-67@Cotton). The robust superhydrophobic surface was successfully created on ZIF-67@Cotton by combining a self-roughness structure with the modification using a low surface energy agent. This modification imparts versatility, enabling self-cleaning, high-efficiency oil-water separation, and mechanical stability. The resulting ZIF-67@Cotton exhibits a desirable water contact angle (WCA) superhydrophobic characteristic (over 156°), and exceptional resistance to mechanical abrasion during laundering. Notably, this superhydrophobic ZIF-67@Cotton not only efficiently extracts oil from oil/water mixtures with a efficiency over 99.5 % and water-in-oil emulsion (99.3 %) after repeating 20 times but also exhibits superior UV resistance which introduces an innovative approach to develop next-generation multifunctional flexible fabrics featuring superhydrophilic and underwater superoleophobic surfaces.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 33
·46038-46051
·
IF 0
Wang Changlong,Sun Qian,Yang Qing,Wei Huiying,Yang Yanzhao
Heavy metals are highly toxic and nonbiodegradable, posing a serious threat to the water environment and human beings. Therefore, it is crucial to develop a highly efficient adsorbent that is easy to recover and separate for the removal of heavy metals. In this paper, nitrogen-doped magnetic carbon (NC-67) was prepared by carbonization and hydrochloric acid treatment using cobalt-containing MOF (ZIF-67) as precursor. Then, polyaniline (PANI) was grown directly on NC-67 with high specific surface area by in situ polymerization to prepare polyaniline-coated nitrogen-doped magnetic carbon (NC-67@PANI), which was characterized by XRD, SEM, TEM and VSM, etc. and used for the removal of Cr(VI)from wastewater. The experimental results showed that the adsorption process of Cr(VI) by NC-67@PANI was spontaneous and endothermic, which conformed to the pseudo-second-order model and Freundlich adsorption isotherm model. Due to the synergistic effect of adsorption and reduction, the experimental adsorption capacity of NC-67@PANI for Cr(VI) was 410.2 mg/g. NC-67@PANI maintained a removal efficiency of 65.8% for Cr(VI) after five cycles. In addition, NC-67@PANI had good magnetism and was easy to separate under external magnetic field. The excellent adsorption capacity and easy separation characteristics of NC-67@PANI indicate that it is a promising adsorbent for Cr(VI) removal from wastewater. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
BIOCHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 3.8
Yan Wang,Bo Ding,Qingqing Bao,Yunying Zhao,Guohui Li,Yu Deng
Agmatine is an important basic drug and nutritional supplements, which exhibits significant physiological activities. Traditional methods, such as whole-cell catalysis, require substantial pyridoxal 5′-phosphate (PLP) addition, which accounts for 15 % of production costs. In this study, we utilized purified arginine decarboxylase (AdiA-M2) that leverages the intrinsic PLP cofactor, without the need for additional PLP supplementation, and ZIF-8 was employed to enhance the pH tolerance. The successful incorporation of AdiA-M2 into the ZIF-8 structure was confirmed through scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM). The immobilized arginine decarboxylase demonstrated markedly enhanced performance under alkaline conditions, along with improved thermal stability and storage activity compared to its free enzyme counterpart. Specifically, the immobilized AdiA@ZIF-8 system achieved an initial conversion rate of 95.16 %, after five recycles the titer attained 266.69 g/L without the extra PLP addition, which is 1.67 times higher than the best current production approach. The adopted enzyme-catalysis system eliminated the need for additional cofactors, thereby lowering costs and providing valuable insights for the industrial production of agmatine.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Sunlong Li,Siyu Hu,Yifeng Shi,Yeheng Huang,Yuli Chen,Yan Chen,Fengyu Zhang,Zhan Gao,Shuqing Jin,Qiwei Zhou,Shu Yang,Haibo Liang,Lianggao Yu,Shuhao Zhang,Chongan Huang,Chenglong Xie,Zaher Meftah,Aimin Wu,Xiaolei Zhang,Xiangyang Wang
Ferroptosis is a major contributor to intervertebral disc degeneration (IVDD) and represents a promising therapeutic target; however, effective medications that specifically target ferroptosis are still lacking. Consequently, strategies aimed at suppressing the expression of ferroptosis-related genes, such as small interfering RNA (siRNA) targeting activating transcription factor 3 (ATF3), appear to be a feasible therapeutic approach for IVDD. Zeolitic imidazolate framework-8 (ZIF-8) exhibits exceptionally high binding affinity for nucleic acids, including siRNA. Nevertheless, its practical application is hindered by challenges such as limited siRNA encapsulation and potential toxicity arising from Zn 2 ⁺ ion release during degradation. In the current study, a novel siRNA delivery system is designed with low toxicity, high encapsulation efficiency, and sustained release by hybridizing classical ZIF-8 with histidine (H-ZIF-8) through defect engineering. In vitro functional studies demonstrated that H-ZIF-8 significantly enhances the delivery efficiency of siATF3 in nucleus pulposus cells (NPCs), and effectively suppresses ferroptosis and extracellular matrix (ECM) degradation. Furthermore, the incorporation of histidine into ZIF-8 may improve its biocompatibility by reducing the proportion of Zn 2 ⁺ ions present. In vivo, siATF3@H-ZIF-8 significantly inhibited ferroptosis and alleviated intervertebral disc degeneration (IVDD) in a rat model through sustaining ATF3 knockdown. This research suggests that histidine-modified ZIF-8 may serve as a novel system for siRNA delivery and an effective gene therapy method for diseases, including IVDD.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Huajiao Liu,Yingjie Du,Jing Gao,Liya Zhou,Ying He,Li Ma,Guanhua Liu,Zhihong Huang,Yanjun Jiang
Based on glucose oxidase (GOx) and horseradish peroxidase (HRP), compartmentalization of a bienzyme system was successfully carried out by immobilizing them in hollow metal–organic frameworks via a protein-induced soft-templating pathway. The morphology, structure, and properties of the obtained HRP@H-ZIF-8-GOx (GOx and HRP were immobilized in the shell and cavity of hollow ZIF-8, respectively) were investigated by powder X-ray diffraction, scanning transmission electron microscopy (STEM), and so forth. HRP@H-ZIF-8-GOx showed excellent catalytic activity for the cascade reaction with glucose and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt as the substrates. The temperature adaptability, thermal stability, mechanical stability, and long-term storage stability of HRP@H-ZIF-8-GOx are better than that of HRP-GOx@H-ZIF-8 (GOx and HRP were coimmobilized in the cavity of hollow ZIF-8). HRP@H-ZIF-8-GOx was used for the detection of glucose and phenol, which showed excellent detection performance. This proposed platform provides a facile strategy for constructing a compartmental multienzyme system and expands the application potential of multienzyme in biosensor construction, biocatalysis, and environmental field.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）