PROGRESS IN ORGANIC COATINGS
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2026
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IF 7.9
Zhuo Wang,Lu Yuan,Juan Ji,Haobo Zhu,Yuxing Qin,JianFeng Zhu,Li Zhang,WenLing Wu,Yuan Fang
A smart anti-corrosion coating featuring ZIF-8 nanocontainers was developed for bronze artifact conservation. • ZIF-8 serves a dual function: accelerating epoxy resin curing and enabling pH-responsive release of benzotriazole. • The optimized coating (2.0 wt% filler) exhibits superior barrier properties and enhanced corrosion resistance. • Active self-healing is triggered by damage, where released inhibitor forms a Cu-N coordination film to inhibit corrosion. The effective conservation of bronze artifacts is hindered by the shortcomings of conventional protective coatings. These materials typically cannot self-repairing after damage, allowing corrosion to progress, and often require high curing temperatures that may damage the bronze artifacts. To address these issues, this study develops a multifunctional epoxy coating based on zeolitic imidazolate framework-8 (ZIF-8). ZIF-8 plays a dual role in this system: as a curing accelerator, its tertiary amine groups catalyze the epoxy curing reaction, significantly reducing the activation energy from 130.74 kJ·mol −1 to 59.06 kJ·mol −1 ; and as a pH-responsive nanocontainer, it encapsulates the corrosion inhibitor benzotriazole (BTA) and releases BTA intelligently upon coating damage and corrosion-induced acidic microenvironment-triggered, enabling active self-repairing. Experimental results show that with a BTA loading of 8 mol% and a filler content of 2.0 wt%, the coating exhibits optimal long-term anti-corrosion performance during a 50-day immersion test. After scratching, the low-frequency impedance modulus of the coating recovers rapidly within 2 h and peaks between 8 and 12 h, confirming its fast self-repairing capability. Raman spectroscopy and theoretical calculations reveal that the repairing mechanism stems from the formation of a stable protective film via Cu N coordination between released BTA and the bronze substrate. This work provides an intelligent protection strategy for bronze artifacts, integrating 70 °C curing with active self-repairing functionality. Download: Download high-res image (128KB) Download: Download full-size image
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RSC Advances
·
2023
·Vol. 13
·期 49
·34884-34890
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IF 3.9
Quanfang Wang,Yuefeng Sun,Shidi Zhao,Chuqi Bai,Zhiwei Cong,Yalin Dong,Taotao Wang
Residual antibiotics in nature are an important cause of antimicrobial drug resistance, and how to deal with residual β-lactam antibiotics in aqueous environments has become an urgent issue. In this work, magnetic zeolitic imidazolate frameworks-8 (ZIF-8) for immobilizing metallo-β-lactamases (MBLs), or Fe3O4@ZIF-8@MBLs, were successfully synthesized using the one-pot method in aqueous solution. The morphology and chemical structure of Fe3O4@ZIF-8@MBLs were characterized by scanning electron microscopy, energy dispersive spectra, X-ray diffraction, infrared spectra, physical adsorption, and zeta potential. Further, the degradation performance of Fe3O4@ZIF-8@MBLs for β-lactam antibiotics (penicillin G, cefoperazone, meropenem) in an aqueous environment was investigated by UV-visible absorption spectrophotometry. The results indicated that Fe3O4@ZIF-8@MBLs, compared to control ZIF-8, exhibited superior degradation ability, excellent reusability, and better stability under several harsh conditions. The strategy of combining ZIF-8 and MBLs to form magnetic porous polymers may be suitable for removing β-lactam antibiotics from an aqueous environment. This work provided an original insight into future studies on the degradation of β-lactam antibiotics employing MBLs immobilized by magnetic metal–organic frameworks.
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Food Chemistry-X
·
2026
·
IF 9.2
Rui Liu,Yu Cheng,Yuanwei Peng,Xuelin Fan,Songzhi Xie,Baohua Liu,Rui Qi,Li Yang,Chun Zhang,Hesheng Xia,Jian Wang
PANAM loaded with ZIF-8 and CV was successfully synthesized. • PANAM@ZIF-8@CV were mixed with crosslinked PVA to prepare the composite pad. • The triple synergistic effect realized long-term sustained release of CV. • PANAM@ZIF-8@CV/PVA presented excellent antioxidant and antibacterial properties. • The PANAM@ZIF-8@CV/PVA composite can realize the long-term blueberry preservation. To achieve long-term sustained release of active antibacterial substances and prolong food shelf life, polyacrylonitrile microspheres (PANAM) loaded with ZIF-8 and carvacrol (CV) were fabricated and then blended with crosslinked PVA matrix to prepare a composite pad (PANAM@ZIF-8@CV/PVA). SEM, XPS and XRD results showed ZIF-8 and CV were successfully immobilized in PANAM's porous structure, which effectively enriched active sites and realized efficient anchoring of CV. The triple synergy of ZIF-8, PANAM and polymer matrix enables long-term CV release. Compared with other PVA composite pads containing the same CV content, PANAM@ZIF-8@CV/PVA presented a superior long-term slow-release effect and thus exhibited excellent antioxidant and long-lasting antibacterial properties after 30 days of storage. During 15-day blueberry storage, this composite pad reduced respiratory intensity and weight loss while preserving firmness and nutrients. Thus, blueberries retained intact morphology and fresh taste, demonstrating great potential of PANAM@ZIF-8@CV/PVA in long-term blueberry preservation. Download: Download high-res image (201KB) Download: Download full-size image
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BIOCHEMICAL PHARMACOLOGY
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2023
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IF 5.8
Wen-long Zhao,Di Xu,Jun-song Wang
Aldose reductase (AR) is an important enzyme involved in the reduction of various aldehyde and carbonyl compounds, including the highly reactive and toxic 4-hydroxynonenal (4-HNE), which has been linked to the progression of various pathologies such as atherosclerosis , hyperglycemia , inflammation, and tumors. AR inhibitors have potential therapeutic benefits for these diseases by reducing lipid peroxidation and mitigating the harmful effects of reactive aldehydes. In this study, we found that torachrysone-8- O -β- d -glucoside (TG), a natural product isolated from Polygonum multiflorum Thunb., functions as an effective inhibitor of AR, exhibiting potent effects in clearing reactive aldehydes and reducing inflammation. TG up-regulated the mRNA levels of several antioxidant factors downstream of NRF2, especially glutathione S-transferase (GST), which is significantly increased, thus detoxifying 4-HNE by facilitating the conjugation of 4-HNE to glutathione, forming glutathione-4-hydroxynonenal (GS-HNE). By employing a combination of molecular docking, cellular thermal shift assay, and enzyme activity experiments, we demonstrated that TG exhibited strong binding affinity with AR and inhibited its activity and blocked the conversion of GS-HNE to glutathionyl-1,4-dihydroxynonene (GS-DHN), thereby preventing the formation of protein adducts and inducing severe cellular damage. This study provides novel insights into the anti-inflammatory mechanisms of AR inhibitors and offers potential avenues for developing therapeutic strategies for AR-related pathologies. Our findings suggest that TG, as an AR inhibitor, may hold promise as a therapeutic agent for treating conditions characterized by excessive lipid peroxidation and inflammation. Further investigations are needed to fully explore the clinical potential of TG and evaluate its efficacy in the treatment and management of these complex diseases.
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JOURNAL OF APPLIED ELECTROCHEMISTRY
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2023
·
IF 2.9
Zhan Ke,Du Yongkun,Liu Qingqing,Cui Chenxu,Xing Guangxu,Li Shanshan,Ren Hongtao,Wang Fan,Xu Chao,Wang Na
Wheat gliadin is thought to be the main cause of wheat allergy leading to celiac disease. In this study, we reported an electrochemical immunosensor based on AuNPs/Zn/Ni-ZIF-8-800@graphene for simple, efficient, and sensitive detection of gliadin. A monoclonal antibody against gliadin were prepared by hybridoma technique. Zn/Ni-ZIF-8-800 with high stability was prepared by using zinc–nickel bimetallic organic framework MOFs, and graphene and gold nanoparticles with large surface area and excellent conductivity were introduced. Chitosan was used as a binder to fixed the composite on the surface of glassy carbon electrode. The fabricated materials and the corresponding sensors were comprehensively characterized by X-ray diffractometer, scanning electron microscope, transmission electron microscopy, Fourier transform infrared spectroscopy, Brunauer–Emmett–Teller, and cyclic voltammetry analyses. Under the optimal conditions, the linear range of the electrochemical immunosensor was 0.1–100 μg mL −1 , and the detection limit was 0.950 μg mL −1 . In addition, the fabricated sensor exhibited high selectivity and long-term stability. The recovery test showed that the prepared sensor was suitable for the detection of gliadin in real food and feed, exhibiting great promising of the developed sensor in practical application. Graphical abstract
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ACS Omega
·
2023
·
IF 4.1
Jianqiao Kong,Song Xu,Yang Dai,Yi Wang,Yun Zhao,Peng Zhang
Chemotherapeutic agents fail in clinical chemotherapy in the absence of targeting and acquired resistance. We, therefore, synthesized Fe3O4@ZIF-8@Sor@TA nanocomposite drugs based on the drug delivery properties of nanomaterials. ZIF-8 is a nanomaterial with a porous structure that can load anticancer drugs. The nanodrug used the paramagnetic property of Fe3O4 to deliver sorafenib (Sor) precisely to the tumor site, then used the pH responsiveness of ZIF-8 to slowly release Sor in the tumor microenvironment, and finally used tannic acid (TA) to inhibit P-glycoprotein to suppress the Sor resistance. The results of material characterization presented that the prepared material was structurally stable and was able to achieve a cumulative drug release of 38.2% at pH 5.0 for 72 h. The good biocompatibility of the composite was demonstrated by in vitro and in vivo experiments, which could improve antitumor activity and reduce Sor resistance through magnetic targeting TA. In conclusion, the Fe3O4@ZIF-8@Sor@TA material prepared in this study demonstrated high antitumor activity in hepatocellular carcinoma treatment, promising to reduce drug resistance and providing a novel research approach for cancer treatment.
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Lan Ding,Ling Sun,Ziwei Wang,Di Li,Qiuyan Zhang,Xiaohui Liu,Yuanlin Ren,Yuesheng Li
Multifunctional cellulose fabrics with flame retardancy, electrical conductivity and UV resistance are expected to be used in the next generation of wearable flexible sensors, so there is an urgent need to develop novel coating systems that improve the natural properties of cellulose fabrics and give it more functionality. Here, a 2D-3D hetero-structured multifunctional coating consisting of titanium carbide (Ti 3 C 2 Tx MXene), zeolitic imidazolate framework-8 (ZIF-8) and phosphonitrilic chloride trimer (PPZ) was constructed on cotton/lyocell blended fabrics (C/L) by a one-pot impregnation method. Briefly, C/L first interacted with MXene via hydrogen bonding, and then the ZIF-8 encapsulation system grew in situ on MXene. The optimal sample obtained, named as MXene@ZIF-8@PPZ-C/L, combines flame retardancy, human motion detection and UV resistance. Compared to the untreated C/L, MXene@ZIF-8@PPZ-C/L exhibited a limiting oxygen index value of up to 30.8%, with peak heat release rate and total heat release values reduced by 65.7% and 15.8%, respectively. Meanwhile, MXene@ZIF-8@PPZ-C/L with an electrical conductivity of 24.4 s/m was able to sense human movement stably and continuously. Moreover, MXene@ZIF-8@PPZ-C/L also showed a high ultraviolet protection factor. In short, this work provided a simple method for fabricating new-generation multifunctional flexible wearable smart fabrics.
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FOOD HYDROCOLLOIDS
·
2023
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IF 10.7
Mengjun Wang,Linyu Nian,Jiaoyang Wu,Shujie Cheng,Zhiping Yang,Chongjiang Cao
The deterioration of postharvest fruits and vegetables caused by ethylene and microorganisms leads to global resource waste. Therefore, the development of multifunctional packaging materials that scavenge ethylene and inhibit microorganisms is essential to extend the shelf life of fruits and vegetables and minimize waste. Herein, the excellent photocatalytic performance of [email protected] nanoparticles (NPs) was incorporated into chitosan (CS) and sodium alginate (SA) matrix by layer-by-layer (LBL) assembly method to obtain CS/SA/ [email protected] nanocomposite films. These as-prepared films exhibited excellent antibacterial (antibacterial ratio >99%) and ethylene scavenging properties (scavenging ratio >40%) due to the synergistic effect between visible light-induced reactive oxygen species (ROS) and the higher specific surface area of ZIF-8. The extended shelf life of kiwifruit further confirmed the enhanced preservation performance of CS/SA/ [email protected] nanocomposite films. In addition, with the addition of [email protected] NPs, the color, and transparency of the films decreased, but the mechanical strength, thermal stability, hydrophobicity, and barrier properties were improved. In summary, the successful construction of ethylene scavenging and antibacterial films provides new ideas for the innovation of environmentally adaptive and functionalization of films.
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Progress in Natural Science-Materials International
·
2023
·
IF 4.7
Siyi Wang,Yuxuan Bai,Zhixiong Zhang,Chengde Xie,Wenhui Song,Chen Wang,Zhuoyu Ji,Jianjun Wang
In this study, the one-dimensional nanomaterial α-MnO 2 @ZIF-8 was satisfactorily fabricated using a simple hydrothermal method by modifying ZIF-8 on α-MnO 2 nanowires for high-performance extraction of U(VI) out of water solution. The experimental data indicated that the adsorption of U(VI) on α-MnO 2 @ZIF-8 was intensely dependent on solution pH but not on ionic strength . The maximum adsorption of U(VI) on α-MnO 2 @ZIF-8 at pH = 5.0 and T = 298 K was 802.36 mg/g, substantially higher than the adsorption on α-MnO 2 (22.32 mg/g) or ZIF-8(551.31 mg/g) under the same conditions, indicating that the performance of the modified α-MnO 2 was greatly enhanced. Attaining adsorption equilibrium within 45 min, the analytical kinetic process of α-MnO 2 @ZIF-8 indicated that its adsorption on U(VI) was monolayer chemisorption . The adsorption experiments and XPS analyzed the possible adsorption mechanism of U(VI) in the reaction with α-MnO 2 @ZIF-8 during the adsorption process , namely intra-sphere surface complexation, chemisorption and electrostatic interaction . The simple preparation and high removal efficiency of α-MnO 2 @ZIF-8 indicated that this adsorbent had good prospects for application in wastewater.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yue Zhao,Rui Gao,He Wang,Yanping Sun,Xiaohui Zhan,Lei Chen,Junyan Liu,Huixiang Shi
The adsorption and protective calcination methods were combined to synthesize single Mn atoms catalyst with more Mn-N x exposure for peroxymonosulfate (PMS) activation. During the carbonization process, the surface adsorbed Mn species in zeolitic imidazolate framework-8 (ZIF-8) and the surrounding graphitic carbon nitride (g-C 3 N 4 ) jointly maintained the morphology of precursor and enriched Mn-N 6 sites near the catalyst surface. The hollow and hierarchically porous structures induced by the erosive function of g-C 3 N 4 further facilitated the exposure of Mn-N 6 sites and mass transfer processes. Herein, the derived hollow carbon polyhedron catalyst (C-Z8-Mn@g-C 3 N 4 ) possessed highly accessible edge-host Mn-N 6 sites and ultra-high specific surface area (1846.91 m 2 g −1 ). C-Z8-Mn@g-C 3 N 4 exhibited remarkable catalysis for sulfamethoxazole (SMX) degradation at an extremely low dosage (0.01 g L −1 ), particularly, up to 3.8 times of promotion was obtained compared to traditional single Mn atoms catalyst (66.9 vs 17.8 L g −1 min −1 ). Besides, the catalytic performance of C-Z8-Mn@g-C 3 N 4 was not obviously affected by initial pH (3.14–11.00), inorganic anions and natural organic matters (NOMs). Experiments and Density functional theory (DFT) calculations revealed that Mn-N 6 sites not only had stronger PMS adsorption capacity than graphitic N, but also enhanced the electron transfer between catalyst and PMS, thus promoting the redox and self-decomposition of PMS to produce SO 4 − , OH and singlet oxygen ( 1 O 2 ) (as major active oxygen species). This work provides new insights into the regulation of active sites exposure in single-atom catalysts for enhanced catalytic performance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
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IF 9.9
Jing Cao,Hong Zhou,Cunping Huang,Qiang Wu,Weifeng Yao
The development of highly efficient piezocatalysts has attracted widespread attention for energy conversion and pollution abatement. This paper reports for the first time exceptional piezocatalytic properties of a Zn- and N -codoped porous carbon piezocatalyst (Zn-N x -C) derived from the zeolitic imidazolium framework-8 (ZIF-8) for both hydrogen production and degradation of organic dyes. The Zn-N x -C catalyst has a high specific surface area of 810.6 m 2 /g and retains the dodecahedron structure of ZIF-8. Under ultrasonic vibration, the hydrogen production rate of Zn-N x -C has achieved 6.29 mmol/g/h, surpassing most recently reported piezocatalysts. Additionally, the Zn-N x -C catalyst demonstrates a 94% degradation efficiency for organic rhodamine B (RhB) dye during 180 min of ultrasonic vibration. This work sheds new light on the potential of ZIF-based materials in the field of piezocatalysis and provides a promising avenue for future developments in the area.
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Materials
·
2023
·Vol. 16
·期 9
·3378
·
IF 3.4
Qing Liu,Xiang Gao,Zhibao Liu,Ligang Gai,Yan Yue,Hongfang Ma
An electrochemical sensor based on carbon quantum dots (CQDs) and zeolitic imidazolate framework-8 (ZIF-8) composite was fabricated to detect lead(II). The CQDs (2.47 ± 0.52 nm) were synthesized from platanus acerifoli leaves by carbonization and the hydrothermal method. Under the optimal conditions, the fabricated electrochemical sensor had excellent performance in detecting Pb2+. The linear range for Pb2+was 1 nM–1 μM, and the limit of detection (LOD) was 0.04 nM and the limit of quantification (LOQ) was 0.14 nM. Moreover, when the solution contained Pb2+and Cd2+, the linear range for Pb2+was 50 nM to 1 μM and the LOD was 0.02 nM. When the solution contained Pb2+and Cu2+, the linear range for Pb2+was 50 nM–750 nM and LOD was 0.07 nM. Furthermore, even if the solution contained Pb2+, Cd2+and Cu2+, the linear range for Pb2+was 50 nM–1 μM and the LOD was 0.04 nM. The X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectrometer (FTIR) and Brunauer-Emmet-Teller (BET) results indicated that the composite electrode materials had abundant oxygen-containing functional groups, a large specific surface area and pore structure, which are conducive to the adsorption of heavy metal ions and improve the detection performance.
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危险品化学品经营许可证（带存储）