INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
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IF 8.025
Zhan Shu,Cencen Zhang,Lizhao Yan,Haoqi Lei,Caixing Peng,Shuang Liu,Lihong Fan,Yingying Chu
Repair of periodontal and maxillofacial bone defects is a major challenge in clinical. Guided bone regeneration (GBR) is considered one of the most effective methods. However, the efficacy of currently available GBR membranes for repair is frequently limited by their poor osteogenic potential and lack of antibacterial activity. The first step in this investigation was to construct a zinc-based zeolite-imidazolate framework loaded with copper ions ( [email protected] ). Following that, a novel polycaprolactone/polylactic acid/nano-hydroxyapatite/ [email protected] (PCL/PLA/n-HA/ [email protected] ) GBR membrane was developed using a simple porogen with nonsolvent-induced phase separation (NIPS) approach. The produced membrane with asymmetric porous structure (one smooth side and one rough side) possesses hydrophilicity corresponding to the roughness of its two sides. The superior mechanical property, stability of degradation, and ion release capability of the membrane all contribute to the clinical feasibility. Additionally, in vitro biological experiments demonstrated that the PCL/PLA/n-HA/ [email protected] membrane had favorable osteogenic and antibacterial properties, which suggests the high potential for application in the GBR procedure.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2022
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IF 7.129
Yixuan Liang,Hanbing Li,Xiaotong Li,Qiyu Zhang,Jiaying Fei,Sumei Li,Sha Chen
Around 6.6 million tons of spent coffee is produced per year, resulting in resources loss and potential environmental risks. Hence, a green technique is required to reuse the spent coffee grains. In this study, coffee grounds were burnt at 900 °C to generate the biochar (BC) for the synthesis of the porous adsorbent (ZIF-8 @BC) by growing ZIF-8 on the surface of BC. We applied the well-prepared ZIF-8 @BC to remove Congo red (CR) in water. The maximum adsorption capacity of ZIF-8 @BC on Congo red in water was up to 1080.4 mg/g, which was significantly higher than that of many different types of BCs reported in previous studies. The reasons for its highly efficient adsorption of CR probably was attributed to metal ions and coordinatively unsaturated sites in the material. Also, BC enabled the less aggregation of ZIF-8 to provide sufficient specific surface area for CR adsorption. From the analysis of the pseudo-second-order kinetic model and Langmuir model, the adsorption of ZIF-8 @BC on CR was a homogeneously chemical adsorption process regulated by electrostatic interaction, π-π stacking and metal coordination.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Danyi Yang,Jingjing Wang,Yaxin Gu,Xinyu Zhi,Tianliang Wang,Jinbo Jia,Chengchun Tang,Yi Fang
The discharge of uranium-containing wastewater from nuclear fuel production poses severe threats to human health and environmental security due to the high mobility, solubility, and radiotoxicity of hexavalent uranium (U(VI)). However, developing an adsorbent that simultaneously achieves high adsorption capacity, fast kinetics, strong selectivity and good recyclability remains a major challenge. In this paper, porous boron nitride-loaded ZIF-67 composites (BN@ZIF-67-X) were synthesized by a simple in situ growth method and used for the removal of U(VI) from aqueous solutions. The results showed that BN@ZIF-67 exhibited excellent adsorption properties for U(VI) than pure p-BN and ZIF-67. It also demonstrated acceptable cyclic regeneration properties. In addition, the adsorption of U(VI) by BN@ZIF-67-2 achieved equilibrium within 60 min, the adsorption kinetics were well-described by the pseudo-second-order model, the isothermal model conformed to the Langmuir isothermal model, and the adsorption was an endothermic monolayer chemisorption process. The maximum adsorption capacity of U(VI) by BN@ZIF-67-2 was calculated to be 550.306 mg g −1 . Moreover, the adsorption of BN@ZIF-67-2 exhibited excellent selectivity in the adsorption of U(VI), which was dominated by surface complexation. In conclusion, BN@ZIF-67 is a promising adsorbent for the adsorption of U(VI) from aqueous solution.
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JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Douchao Mei,Lijia Liu,Huan Li,Yudan Wang,Fuqiu Ma,Chunhong Zhang,Hongxing Dong
Herein, a dual-function Zeolitic Imidazole Frameworks (ZIFs) ZIF-90 grafted with malononitrile by Knoevenagel reaction and following with an amidoximation reaction to form an efficient U (VI) adsorbent ( ZIF-90-AO ). The strong chelation power of amidoxime groups (AO) with uranium and ZIF-90 ’s mesoporous structure afforded ZIF-90-AO high maximum uranium adsorption capacity of 468.3 mg/g (pH = 5). In addition, the factors affecting uranium adsorption process were investigated by a batch of adsorption tests under different adsorption conditions. ZIF-90-AO displayed good selectivity to UO 2 2+ in the solution containing multiple co-existing ions and good regeneration property. More importantly, ZIF-90-AO showed excellent antimicrobial property against both E. coli and S. aureus . Therefore, ZIF-90-AO is a U-adsorbent with great application value for removing U (VI) from wastewater due to the high U (VI) adsorption capacity in weak acid condition and good anti-biofouling properties.
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ACS ES&T Water
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2020
·
IF 0
Limei Dong,Yiming Li,Dafan Chen,Xiuping Chen,Dan Zhang
The hierarchically structured Fe3O4-MnO2-ZIF-8 composite was successfully synthesized and applied to activate peroxymonosulfate (PMS) for the degradation of bisphenol A (BPA) and other organic pollutants for the first time. Catalytic experiments revealed that the as-prepared Fe3O4-MnO2-ZIF-8 showed highly efficient catalytic activity and deep mineralization for BPA because of the loading of ZIF-8. When 60 mg/L BPA was degraded by the Fe3O4-MnO2-ZIF-8/PMS system, the removal efficiency of BPA reached 100% within 15 min and the TOC removal efficiency reached 80% within 9 min, values that were much higher than those of the catalysts reported recently. Fe3O4-MnO2-ZIF-8 can be separated conveniently from the aqueous phase under magnetic field control and shows better recyclability. Simultaneously, the Fe3O4-MnO2-ZIF-8/PMS system shows an excellent removal capability for other organic pollutants, such as phenol, tetracycline, p-hydroxybenzoic acid, and rhodamine B. Through radical quenching experiments and electron paramagnetic resonance tests, the mechanism of activation of PMS by Fe3O4-MnO2-ZIF-8 was investigated. ZIF-8 loaded on the surface of the Fe3O4-MnO2 composite can accept electrons generated from the Mn(II)/Mn(III)/Mn(IV) redox conjugate triplet and react with PMS to generate more •OH and SO4•–, thus significantly enhancing the catalytic performance. Additionally, on the basis of GC-MS analysis, the intermediates in the process of BPA degradation were tested and the possible degradation pathway was determined. This study indicates that Fe3O4-MnO2-ZIF-8 is a highly efficient catalytic material for PMS-based AOPs for the removal of various pollutants from water.
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MATERIALS & DESIGN
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2025
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IF 7.9
Haowen Qi,Xue Tao,Xinyu Yang,Suqin Zhang,Shujing Wang,Changyu Shao,Chen Chen,Haifeng Xie
Resin-bonded restorations, a prevalent treatment modality for dental defects, are prone to complications including nanoleakage, secondary caries, and pulpal pathology over extended service periods. To address these challenges, this study developed a multifunctional biomaterial, HZN@PAH-ACP, specifically designed for application at the dentin bonding interface. The material was fabricated by etching ZIF-8 with tannic acid to produce HZN, which was subsequently loaded with poly(allylamine)-stabilized amorphous calcium phosphate (PAH-ACP). The structure and formation mechanism of this biomaterial were thoroughly investigated using electron microscopy and molecular dynamics simulations. Meanwhile, HZN@PAH-ACP effectively induced intrafibrillar mineralization of collagen fibers and promoted remineralization of demineralized dentin, significantly reducing nanoleakage within the hybrid layer. Furthermore, the material inhibited the activity of Streptococcus mutans and exhibits excellent biocompatibility, while simultaneously enhancing the odontogenic differentiation and mineralization of human dental pulp stem cells. All powered by the simultaneous release of calcium, phosphate, zinc ions, and tannic acid, and the reduction in pH further accelerates this process. The development of this biocompatible, multifunctional repair biomaterial presents considerable clinical potential, as it addresses multiple challenges concurrently through a single application, that can be used in adhesive primers and pulp capping agents, offering a promising solution for dental restoration.
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JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2020
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IF 2.69
Zhentao Lei,Qiuju Tang,Yanshan Ju,Yonghui Lin,Xiaowen Bai,Haipeng Luo,Zaizai Tong
Developing the hybrid nanosystems for controlled drug release is still a challenging task. In this work, pH-responsive core-shell nanocomposites have been prepared by the growth of zeolitic imidazolate framework-8 (ZIF-8) on the surface of polymeric aggregates self-assembled from poly(ε-caprolactone)-block-poly (quaternized vinylbenzyl chloride/bipyridine) (PCL-b-q(PVBC/BPy), BCP for short) in water. The core of the micelles or the inner cavity of vesicles serves as the drug storage reservoir for the doxorubicin hydrochloride (DOX) and the ZIF-8 shells act as the gatekeepers to prevent drug premature release at physiological environment. Upon pH stimulus, the core-shell nanocomposites (BCP@ZIF-8) show a retarded drug release behavior compared with DOX-loaded polymeric aggregates counterparts (without the shell of ZIF-8). Moreover, the as-prepared nanocomposites perform good biocompatibility towards MCF-7 cell. Meanwhile, the DOX-loaded BCP@ZIF-8 nanocomposites present lower cytotoxicity compared with DOX-loaded BCP and free DOX. The confocal microscopy study shows the core-shell nanocomposites could be efficiently internalized by cancer cells, and the loaded DOX could be successfully released under acidic intracellular environment. The above result shows that the core-shell nanocomposite could be a promising candidate for pH-responsive drug delivery system in the cancer therapy.
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CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Mantang Chen,Nan Wang,Xiaobo Wang,Yu Zhou,Lihua Zhu
Magnetic Fe 3 O 4 @ZIF-67 composites were prepared, characterized, and used as heterogeneous catalysts to activate peroxymonosulfate (PMS) for the degradation of tetrabromobisphenol A (TBBPA). It was observed that all the added TBBPA (40 mg L −1 ) was completely degraded in 3 min in the Fe 3 O 4 @ZIF-67 (0.1 g L −1 ) + PMS (0.1 g L −1 ) system with a pseudo second-order degradation rate constant ( k ) of 110.3 L g −1 min −1 , being nearly 10 times that (11.8 L g −1 min −1 ) in the ZIF-67 + PMS system and 2000 times that (0.06 L g −1 min −1 ) in the Fe 3 O 4 + PMS system. The observed synergistic catalysis between Fe 3 O 4 and ZIF-67 in Fe 3 O 4 @ZIF-67 enhanced not only the degradation of TBBPA, but also the TOC removal and the release of Br − during the degradation of TBBPA. Multiple reactive species including OH, SO 4 − and 1 O 2 were responsible for the degradation of TBBPA, but 1 O 2 was the dominant one. The synergistic catalytic mechanism of PMS activation by Fe 3 O 4 @ZIF-67 was proposed, which mainly involved the electron donating ability of Fe 2+ in Fe 3 O 4 for enhancing the Co 3+ /Co 2+ cycle. Moreover, Fe 3 O 4 @ZIF-67 showed good recyclability and could be easily recycled by magnetic separation. This work provides an opportunity to construct highly efficient catalysts with magnetic recycling capability.
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CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Xiaocong Gu,Zong Liu,Hui Liu,Chengang Pei,Ligang Feng
Efficient oxygen evolution nano-catalyst is significant for hydrogen generation in the water-splitting reaction. Herein, we demonstrate that fluorination of ZIF-67 Framework templated Prussian blue analogue hollow nano-box is highly efficient for the oxygen evolution reaction (OER). The structure and morphology observation shows the degree of structural transformation and morphology are influenced by the fluorination temperature, and the catalytic ability for OER is correspondingly correlated to these characters. The product obtained at the annealed temperature of 250 °C exhibits the highest catalytic performance for OER with an overpotential of 243 mV (No IR correction) to offer 10 mA cm −2 when loaded on the inert glass carbon electrode, which is much better than that of the commercial IrO 2 catalysts. High catalytic stability and kinetics are also found for the OER. Moreover, it has the highest intrinsic activity as demonstrated by the specific activity and turnover frequency indicating the intrinsic advantages of fluorination and hollow nano-box structure. This study enriches the application of Prussian blue analogue based hollow materials for OER by facile fluorination at low temperatures.
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INDUSTRIAL CROPS AND PRODUCTS
·
2025
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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.
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MOLECULES
·
2024
·Vol. 29
·期 17
·4059
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IF 4.2
Xin Yan,Yiyuan Yao,Chengming Xiao,Hao Zhang,Jia Xie,Shuai Zhang,Junwen Qi,Zhigao Zhu,Xiuyun Sun,Jiansheng Li
Catalytic performance decline is a general issue when shaping fine powder into macroscale catalysts (e.g., beads, fiber, pellets). To address this challenge, a phenolic resin-assisted strategy was proposed to prepare porous Co/N carbon beads (ZACBs) at millimeter scale via the phase inversion method followed by confined pyrolysis. Specially, p-aminophenol–formaldehyde (AF) resin-coated zeolitic imidazolate framework (ZIF-67) nanoparticles were introduced to polyacrylonitrile (PAN) solution before pyrolysis. The thermosetting of the coated AF improved the interface compatibility between the ZIF-67 and PAN matrix, inhibiting the shrinkage of ZIF-67 particles, thus significantly improving the void structure of ZIF-67 and the dispersion of active species. The obtained ZACBs exhibited a 99.9% removal rate of tetracycline (TC) within 120 min, with a rate constant of 0.069 min−1(2.3 times of ZIF-67/PAN carbon beads). The quenching experiments and electron paramagnetic resonance (EPR) tests showed that radicals dominated the reaction. This work provides new insight into the fabrication of high-performance MOF catalysts with outstanding recycling properties, which may promote the use of MOF powder in more practical applications.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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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.
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