CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Menghui Wan,Yuting Zhang,Tao Hong,Junyan Cui,Yanbao Zhao,Zhihua Wang
The development of novel intelligent pesticide formulations for enhanced foliage deposition and efficient utilization remains a challenge. Accropode stones are general employed to attenuate the impact of waves. Herein, we constructed novel accropode-like carriers based on zeolitic imidazolate framework-8 (ZIF-8) and silica (SiO 2 ) for pesticide delivery with enhanced foliar affinity. Firstly, β-cyclodextrin-doped ZIF-8 (β-CD/ZIF-8) carrier was prepared by a one-pot method. Subsequently, a selective occupation strategy was applied to achieve facet-specific growth of mesoporous SiO 2 on β-CD/ZIF-8 (β-CD/ZIF-8@S). The β-CD/ZIF-8@S nanocarriers exhibited regular structure with sixteen facets. The accropode-like structure would achieve effective foliage retention and resistance to rainwater washout by the reduction of carrier bouncing and rolling on foliage. The β-CD/ZIF-8@S presented a high loading efficacy for imidacloprid (IMI) (24.43 %) and good biocompatibility. After loading IMI, tannic acid (TA) was utilized to block the loaded pesticide (IMI@β-CD/ZIF-8@ST). The IMI@β-CD/ZIF-8@ST exhibited dual responsive release behavior and could be effectively transported in both directions in various parts of tobacco plants. The photostability of IMI@β-CD/ZIF-8@ST was 5-times that of IMI solution. Moreover, the insecticidal efficacy against Plutella xylostella of IMI@β-CD/ZIF-8@ST was 80 % after 120 h of UV irradiation, while that of IMI and IMI water dispersible granule was only 23.33 % and 26.67 %, respectively. This work provides new insights into enhancing the foliage retention and efficiency utilization of pesticide.
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Scientific Reports
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2024
·Vol. 14
·期 1
·1-11
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IF 3.8
Yin Cong,Peng Yinyin,Li Hongjiang,Yang Guang,Yuan Guoyuan
This study aimed to synthesize a novel nanofiber adsorbent based on metal–organic frameworks (MOFs), ZIF-94-PAN, by incorporating ZIF-94 into polyacrylonitrile (PAN) through electrospinning. The investigation of the adsorption characteristics of ZIF-94-PAN for cobalt ions was undertaken, yielding findings that suggest an optimum ZIF-94 loading content within the ZIF-94-PAN composite of 8%. The adsorption experiments revealed that, under pH 8.3 and 298 K, ZIF-94-PAN-8% attained cobalt ion equilibrium adsorption (139.08 mg/g). Additionally, the adsorption kinetics of cobalt ions exhibited conformity with the pseudo-second-order model, whereas adherence to the Freundlich isotherm model indicated a non-homogeneous, endothermic process. XPS analysis unveiled that the adsorption mechanism was characterized by the coordination of nitrogen and oxygen atoms within ZIF-94-PAN with cobalt ions. This study effectively addressed the challenges of separating and recovering MOFs adsorbents by fabricating them as nanofibers. The remarkable adsorption performance and stability of the ZIF-94-PAN nanofibers highlight their potential for removing cobalt-contaminated wastewater.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Guangjun Liu,Xiaoyang Yu,Fei Zhou,Keling Yan,Lanrui Yin,Changfu Zhuang,Ying Wang,Di Tian
In this paper, a 2 dimensional (2D) metal–organic frameworks (MOFs) nanosheets grown on 1D ZIF-67 modified carbon nanofibers (CNFs) was designed and fabricated with a hierarchical heterostructure. The hierarchical 2D/1D MOFs/CCNF offers rich electrochemical active sites and favorable ion/electron diffusion pathways. The synergistic effect of Co, CNFs and MOFs from heterostructures contributes to superb electrochemical activities. Benefiting from the hierarchical heterostructures optimized by the mass ratio of ZIF-67/PAN and CCNF/NiMOF as well as the type of substrates, CCNF-20@MOF showed a specific capacity of 361.50 C g −1 at 0.5 A g −1 , whose charge storage mechanism is dominated by diffusion control. Meanwhile, a bamboo-derived carbon material (BBC) was designed in the solid-state asymmetric supercapacitor (CCNF-20@MOF//BBC). The device exhibited an energy density of 38.89 Wh kg −1 at the power density of 800.02 W kg −1 and excellent cycling stability, that exceed many MOFs based devices. Moreover, it could be successfully used for LED light-emitting, demonstrating a good application prospect. This work provides a feasible strategy for the improved performance of MOFs and CNFs based materials in the field of energy storage.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Enhao Zhang,Sisi Yao,Xiaoxuan Guo,Xinyi Zhou,Yutai Li,Feifan Xie,Yonghang Wei,Dongjiang Yang,Jin Sun,Yun Lu
The advancement of highly efficient bifunctional electrodes tailored for water electrolysis, specifically targeting the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), is pivotal for sustainable hydrogen production. However, sluggish reaction kinetics and elevated overpotentials pose formidable hurdles. In this study, an innovative strategy is introduced by integrating Fe@ZIF-67 onto self-supporting carbonized rattan stem (CR), leveraging its distinctive through-channel macroporous architecture to bolster catalytic efficacy. The self-supporting CR substrate not only enhances mass transport but also facilitates uniform deposition of ZIF-67, ensuring optimal exposure of active sites. A comparative analysis with carbonized basswood (CW) underscores the superior performance of the macroporous CR substrate in augmenting both OER and HER activities. Notably, the Fe@ZIF-CR self-supported electrode achieves an overpotential of 208 mV at 10 mA cm⁻² for oxygen evolution and 317 mV at 100 mA cm⁻² for hydrogen evolution. Additionally, the self-supporting nature of the CR substrate guarantees long-term stability and mitigates catalyst loss during operation. These findings underscore the synergistic advantages of the macroporous structure and ZIF-67 active sites, offering fresh perspectives on the utilization of biomass-derived carbon materials in sustainable energy technologies.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
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IF 11.2
Chang Liu,Na Wu,Bin Li,Zhou Wang,Lili Wu,Zhihui Zeng,Jiurong Liu
Developing high-efficiency electromagnetic wave (EMW) absorbers by designing dielectric/magnetic components and microstructure in a straightforward, scalable method is highly desirable yet challenging. Here, we introduce a novel hierarchical composite aerogel-based EMW absorber composed of conductive carbon nanotubes (CNTs) and magnetic metal-organic framework (MOF) derivatives, integrated with sustainable cellulose nanofibers (CNF) derived carbon. This composite was prepared using a scalable freeze-casting followed by carbonization approach. Freeze casting enabled the creation of porous monoliths with high specific surface areas and customizable pore sizes and porosities, crucial for enhancing EMW reflection and scattering. Carbonization enhanced composite conductivity and stabilized the cobalt (Co)/carbon nanoparticles derived from ZIF-67 within the carbon matrix. CNF-derived carbon facilitated the efficient integration of ZIF-derived Co nanoparticles and CNTs, resulting in a robust 3D aerogel structure. The synergistic effects of CNT conductive paths and Co nanoparticles' magnetic losses provided an efficient route to enhance EMW absorption. Moreover, the creation of numerous heterogeneous interfaces augmented polarization losses, significantly enhancing EMW loss capability. Remarkably, the composite achieved outstanding EMW absorption, with a minimum reflection loss of -71.03 dB at a filling ratio of merely 10 wt.% and an effective absorption bandwidth of 4.64 GHz, comparable to leading EMW absorbers reported to date.
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International Journal of Nanomedicine
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2024
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IF 6.6
Dong Zhang,Mogen Zhang,Huiping Fan,Rui Sun,Jiayun Liu,Weiyuan Ma
Background Melanoma is an aggressive skin tumor with limited therapeutic options due to rapid proliferation, early metastasis, and poor prognosis. Baicalin (BA), a natural flavonoid, shows promise in inducing ferroptosis and apoptosis but faces challenges of poor solubility and bioavailability. To address these issues, we developed a multifunctional drug delivery system: manganese-doped ZIF-8 nanoparticles (ZIF(Mn)) loaded with BA and modified with folic acid (FA) and polyethylene glycol (PEG). FA targets melanoma cells by exploiting folate receptor overexpression, while PEG enhances biocompatibility and systemic circulation. Manganese enables magnetic resonance (MR) imaging for real-time, non-invasive therapy monitoring.Methods BA-loaded ZIF(Mn)/FA-PEG nanoparticles were synthesized via a one-pot method, enabling drug encapsulation, Mn²+ incorporation, and surface modification. The nanoparticles were comprehensively characterized (particle size, Zeta potential, FTIR, and XRD). Cytotoxicity and cellular uptake were evaluated in B16-F10 melanoma cells, and in vivo experiments in C57BL/6J mice investigated MR imaging capability, antitumor efficacy, and biosafety.Results BA@ZIF(Mn)/FA-PEG nanoparticles demonstrated excellent stability, a BA loading capacity of 33.50 ± 0.04%, and pH-responsive release, with accelerated drug release under acidic tumor conditions. Mn²+ provided strong T1-weighted MR imaging contrast. Cellular and animal studies showed enhanced uptake, reduced premature drug release, and improved compatibility. Mechanistically, the nanoparticles induced significant ferroptosis and apoptosis in melanoma cells, leading to potent antitumor effects.Conclusion The BA@ZIF(Mn)/FA-PEG nanoplatform effectively integrates targeted delivery, imaging guidance, and dual ferroptosis-apoptosis induction, offering a promising strategy for improving melanoma treatment outcomes.
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ACS Applied Nano Materials
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2024
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IF 5.3
Tenglong Jin,Wenmiao Chen,Hongyan Zhuo,Wenjuan Li,Zhen Fu,Linlin Feng,Yanli Chen
The development of efficient and facile nonprecious metal catalysts for the oxygen reduction reaction (ORR) holds great significance. Among these, the single-atomic metal–nitrogen–carbon (M–N–C) catalysts are emerging candidates due to their high activity and prolonged lifespan. However, traditional preparation of M–N–C catalysts suffers from thermal aggregation and low space–time yield, limiting their application in industry. Inspired by the “chainmail protection” in carbonaceous materials, here we propose an “armor protection” strategy for the large-scale synthesis of a highly active Fe single-atom ORR catalyst (Fe-8/8-CN) by pyrolyzing a well-designed precursor Fe-ZIF-8/ZIF-8. In this precursor, the 2-methylimidazole zinc MOF (ZIF-8) loaded with iron (Fe-ZIF-8) is encased in an additional ZIF-8 armor layer (Fe-ZIF-8/ZIF-8) that effectively shields the aggregation of Fe species within the inner ZIF-8 during the pyrolysis process, ultimately yielding the Fe single-atom ORR catalyst (Fe-8/8-CN). Furthermore, the facile approaches for the construction of Fe-ZIF-8/ZIF-8 make it efficiently scale up with a high space–time yield of 18.7 kg m–3 day–1. In particular, the armor protection strategy for preparing the Fe single-atom catalyst is universally applicable to leaf-shaped ZIF-L and other ZIFs with diverse morphologies. Thanks to the presence of the outer ZIF-8 layer and the inner ZIF-8 core to dispersing Fe single-atom catalytic sites with the porous and defect-rich characteristics from the volatilization of Zn in ZIF-8, the resulting Fe-8/8-CN demonstrates superior ORR performance in alkaline electrolyte (E1/2 = 0.93 V, JL = −5.89 mA cm–2). Finally, Fe-8/8-CN, as the cathode material for flexible zinc–air batteries, exhibits a high peak power density (97 mW cm–2) and excellent durability superior to Pt/C.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Shuqi Zhang,Jing Yi,Xuanxuan Yuan,Zhilong Zhang,Zhongguo Shan,Haihua Wang
The development of environmentally friendly biodegradable films is urgently required for reducing the plastic pollution crisis and ensuring food safety. Thus, here we aimed to prepare ZIF-8 that has delivery ability for gallic acid (GA) and further incorporated this material (GA@ZIF-8) into carrageenan (CA) matrix to obtain a series of CA-GA@ZIF-8 films. This design significantly improved the mechanical strength and UV barrier and reduced water vapor permeability, moisture content , and swelling rate of the CA films. CA-GA@ZIF-8 films exhibited sustainable release of GA and controlled migration of Zn 2+ up to 144 h in a high-fat food simulator. Also, the composite films performed high-efficiency antioxidant activities (83.29 % for DPPH and 62.11 % for ABTS radical scavenging activity) and 99.51 % antimicrobial effects against Escherichia coli O157:H7 after 24 h. The great biocompatibility of GA@ZIF-8 and CA-GA@ZIF-8-10 % was confirmed by hemolysis, cell cytotoxicity, and mice model. Finally, the preservation experiments showed that CA-GA@ZIF-8 films could effectively maintain freshness and reduce the growth of microorganisms and oxidation of lipids during the preservation of beef. These results suggest that CA-GA@ZIF-8 films hold promising potential for improving the quality preservation of beef.
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PLoS One
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2024
·Vol. 19
·期 10
·e0311239
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IF 2.9
Zhijia Miao,Xueqiang Song,Xiaolei Wang,Hao Wang,Shuoyang Li,Zhen Jiao
To remove phosphate from water, a novel Fe-doped ZIF-8 was synthesized as a superior adsorbent. The Fe-doped ZIF-8 was fully characterized using different characterization techniques and it was found that the as-prepared Fe-doped ZIF-8 (denoted as ZIF-(2Zn:1Fe)) showed a polyhedral morphology with a large specific surface area of 157.64 m 2 /g and an average pore size of 3.055 nm. Analyses using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction showed that Fe atoms were successfully incorporated into the ZIF-8 skeleton. Batch experiments demonstrated that the molar ratio of Fe and Zn has effects on phosphate adsorption. The adsorption kinetics conformed to a pseudo-second-order model with a high correlation coefficient ( R 2 = 0.9983). The adsorption isotherm matched the Langmuir model ( R 2 = 0.9994) better than the Freundlich model ( R 2 = 0.7501), suggesting that the adsorption of phosphoric acid by ZIF-(2Zn:1Fe) can be classified as a chemisorption on a homogeneous surface. The adsorption amount was 38.60 mg/g. It was found that acidic environments favored the adsorption reaction and the best adsorption was achieved at an initial pH of 2. Inhibition of adsorption by common anions is NO 3 - > CO 3 2- > SO 4 2- > Cl - . Characterization results indicate that the main mechanism of adsorption is surface complexation interactions.
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Journal of Materials Chemistry C
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2025
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IF 5.1
Taoli Deng,Zan Ding,Shuang Zheng,Rong-Jun Xie
Ce3+-doped nitride phosphors are promising color converters in laser-driven lighting and display technologies, but they suffer from serious loss in luminescence efficiency caused by the interfacial reaction between phosphor powders and glass powders during the fabrication of phosphor-in-glass bulks or films. In this work, the oxygen-free organic–inorganic hybrid glass (OIHG) Zn(Im)3(HbIm) (ZIF-62) was used instead of the traditional oxide glass to prepare an La3Si6N11:Ce3+ (LSN) phosphor converter by cofiring LSN with the ZIF-62 glass. The LSN phosphor-in-ZIF-62 glass converter well maintains the internal quantum efficiency of the original phosphor powders, showing a luminescence loss of only ∼1%. The sandwich-structured LSN-in-ZIF-62 glass converter, constructed by cofiring it with sapphire substrates, enables the generation of white lighting with a maximum luminous flux of 872.2 lm and a luminous efficacy of 291 lm W−1 when pumped by a blue laser diode at a powder density of 5.99 W mm−2. The use of the oxygen-free ZIF-62 glass provides a viable method to design nitride phosphor-based color converters for low-power laser-driven lighting, high-power LED lighting or projection applications.
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FOOD AND CHEMICAL TOXICOLOGY
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2024
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IF 3.9
Yu Jiang,Yanqing Geng,Rufei Gao,Zhuxiu Chen,Jun Chen,Xinyi Mu,Yan Zhang,Xin Yin,Xuemei Chen,Fangfang Li,Junlin He
Adverse environmental factors during maternal gestation pose a threat to pregnancy. Environmental factors, particularly nanoparticles, can impact pregnancy by causing damage to the placenta. Compared to early gestation, foetuses in late gestation are more robustly developed and at lower risk of adverse effects from environmental factors. Delivery systems for targeted therapy during pregnancy is predominantly focused on their application in late gestation. Zeolitic imidazolate framework-8 (ZIF-8) holds great potential for targeted drug therapy. To evaluate the value of ZIF-8 in targeted treatment of disorders associated with late gestation, it is crucial to investigate the biological effects of ZIF-8 exposure during late gestation. Here, a mouse model exposed to ZIF-8 particles at different doses (5, 10, and 15 mg/kg) during late gestation was constructed. We found that ZIF-8 particles were deposited in the uterus of pregnant mice. ZIF-8 could trigger placental neutrophil aggregation and induce inflammation, which led to trophoblast pyroptosis and impair placental function, adversely affecting the foetus. Neutrophil depletion alleviated placental and foetal damage induced by ZIF-8. This study provides a novel mechanistic view of the reproductive toxicity induced by ZIF-8 and may offer clues to reduce the latent harm of adverse environmental factors to pregnancy.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Xiaotong Zhang,Yanxin Wang,Wei Xing,Leixuan Li,Huiyi Wu,Hanwen Wang,Zilong Wang,Linjun Huang,Jianguo Tang
Bacterial infections and excessive accumulation of wound exudates remain the main obstacles and clinical challenges to the healing of chronic cutaneous wounds. Conventional dressings are commonly used medical materials for acute wound care, but they do not possess the bacterial infection resistance required for chronic wound treatment. Herein, we prepared pure chitosan nanofibrous membranes (C) by electrospinning with poly(ethylene oxide) (PEO) as a sacrificial additive and then loaded with zinc-based metal-organic framework (MOF) as a novel antimicrobial wound dressing. Thermogravimetric and differential scanning calorimetry confirmed the complete removal of PEO. Morphological characterization of the nanofibrous membrane (C) revealed the formation of uniform, bead-free fibers with an average diameter of approximately 148 nm. SEM confirmed the uniform and continuous modification of zeolite imidazolium salt framework-8 (ZIF-8) nanoparticles on the surface of the composite fibrous membrane (C/ZIF). The experimental results showed that the removal of PEO and the incorporation of ZIF-8 significantly improved the rapid liquid absorption of the composite fiber membrane. Rapid uptake of up to 9.2 g/g of liquid in media of the characteristic pH of wound exudates. The results of the MTT assays demonstrated that the C/ZIF composite fiber membrane possesses excellent biocompatibility. The composite fiber membrane released Zn 2+ in a stable and continuous manner and exhibited strong antimicrobial activity against Escherichia coli and Staphylococcus aureus . This study presents a novel approach for controlling wound exudation and preventing wound infections.
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