SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhiqiang Guo,Juanjuan Meng,Xinxin Li,Xinlong Wang,Yuan Li,Liangliang Hu
Layered double hydroxides (LDHs), despite their unique layered structure advantageous for removing high-molecular-weight antibiotics, suffer from limitations such as small specific surface area, uncontrollable morphology, and irregular spatial structure compared to metal–organic frameworks (MOFs). Therefore, in this study, ZIF-8 was used as a template to prepare LDHs with a hollow mesoporous structure (ZNF-HS), merging the benefits of both materials. ZNF-HS was then stably incorporated into sodium carboxymethylcellulose aerogels, resulting in ZNF-HS@CMC composites that facilitated easy solid–liquid separation and were effective in removing tetracycline (TC) and ciprofloxacin (CIP) from aqueous solution. Characterization of ZNF-HS@CMC was conducted using SEM, TEM, XRD, FTIR, XPS, BET, and TGA. ZNF-HS@CMC exhibited a specific surface area of 248.753 m 2 ·g −1 and a pore volume of 0.568 cm 3 ·g −1 , surpassing traditional LDHs. The removal of TC and CIP by ZNF-HS@CMC followed the pseudo-second-order kinetic and Langmuir models, with maximum sorption capacities of 513.772 and 442.515 mg·g −1 , respectively. pH significantly influenced the removal efficiencies, while NaNO 3 concentration up to 0.25 mol·L −1 had negligible impact, maintaining removal efficiencies above 90 %. After five sorption–desorption cycles, the removal efficiencies remained above 80 %. The removal of TC and CIP by ZNF-HS@CMC was primarily achieved through surface complexation, hydrogen bonding, and π-π interactions, with electrostatic interactions also contributing. Overall, ZNF-HS@CMC exhibits the advantages of easy recycling, good reusability, strong resistance to salt interference, and high sorption capacity, making it promising for practical applications in the efficient removal of antibiotics from water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Jingying Yang,Mingfei Pan,Xiao Yang,Kaixin Liu,Yang Song,Shuo Wang
In-situ, real-time and sensitive detection of multiple pesticide residues in food is always an important issue in food safety. Herein, a novel multifunctional bead-string like Ag nanowires@zeolitic imidazolate framework-8 (Ag NW@ZIF-8) core–shell nanochains was successfully synthesized and utilized as surface-enhanced Raman scattering (SERS) substrate for in-situ and simultaneous detection of pesticide residues . Due to the microporous framework structure of ZIF-8 shell and the plasmon property of Ag NWs core, the Ag NWs@ZIF-8 composite was demonstrated to have strong adsorption performance and high SERS activity (enhancement factor: 4.6 × 10 7 ). The Ag NWs@ZIF-8 based SERS strategy achieved sensitive detection of two water-insoluble pesticides methylparathion and carbaryl with detection limits as low as 7.6 × 10 −9 M and 5.7 × 10 −9 M, as well as the in-situ detection of multi-pesticide residues on fruits and vegetables with acceptable recovery ranged from 77.4 % to 117.5 %, demonstrating its great potential for in-situ and rapid detection of food contaminants.
研究领域:
食品安全
·
分析化学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Mu Li,Jingwen Luo,Jianjiang Lu,Wentao Shang,Jiale Mu,Feiyun Sun,Zijun Dong,Xiaoyan Li
A novel Polyacrylonitrile (PAN) composite membrane involving ZIF-8 nanoparticles , named as ZIF-8/PAN membrane, was obtained via electrospinning to remove the Congo red (CR), Pb(II) and Cu(II) ions in industrial wastewaters , during which the adsorption mechanisms were examined in this study. The adsorption efficiency of the electrospun ZIF-8/PAN membrane was as high as 89%, 92% and 76% for CR, Pb(II) and Cu(II), respectively. Comparative analysis showed that ZIF-8 nanoparticles embedded in the ZIF-8/PAN membrane accounted for these enhanced adsorption capabilities. The adsorption behaviors of the ZIF-8 nanoparticles were investigated through experiments and theoretical analysis, and the results unraveled that the adsorption for CR by the ZIF-8 was mainly including electrostatic interaction, hydrogen bonding and π − π interaction, while those for Pb(II) and Cu(II) were mainly caused by ion-exchange and chemical adsorption. Parametric studies were conducted to optimize the conditions for removing CR, Pb(II), and Cu(II) by ZIF-8 nanoparticles, during which all of pollutants showed different reactions to the solution pH. This work not only develops a novel ZIF-8/PAN composite membrane for effective removals of pollutants, but also reveals the underlying mechanisms of pollutants adsorption in terms of molecular interactions, providing important understandings on fibrous materials design for efficient heavy metals and dyes removals in industrial wastewater treatment .
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Shiyuan Liang,Liyuan Chen,Cong Liu,Bowen Guo,Yijie Fan,Zhou Li,Yan Liu,Dan Luo
Antioxidant enzymes are considered to be the most direct and safe candidates to effectively resist oxidative stress and treat senile osteoporosis. However, due to their size, existing enzyme delivery carriers are inevitably endocytosed by cells and subsequently enter endosomes/lysosomes with low pH and rich in acid hydrolase, resulting in the limited therapeutic effects. In this work, an ultrasmall superoxide dismutase (SOD) nanoformulation reinforced with ultrathin ZIF-8 coating (utZIF-SOD) via in situ coordination-mediated self-assembly strategy is constructed. Notably, utZIF-SOD achieves direct, efficient cellular uptake mediated by small size effect, thereby avoiding lysosomal degradation. In particular, ultrathin ZIF-8 coating strengthened the stability of enzyme. Even in aged cells with high oxidative stress levels, utZIF-SOD maintained excellent stability, and its efficiency in scavenging excess intracellular reactive oxygen species (ROS) is ≈1.5 times that of native SOD, better promoting the osteogenic differentiation of aged bone marrow mesenchymal stem cells. In a senile osteoporosis mouse model, the bone mineral density increment after treatment with utZIF-SOD is ≈2 times that of native SOD, achieving the reversal of senile osteoporosis. This work demonstrates the great promise in the synthesis of ultrasmall nanoformulations with ultrathin metal-organic framework coating and opens new avenues for efficient enzyme delivery.
研究领域:
纳米技术
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生物医学工程
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药学
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老年学
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细胞生物学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·
IF 12.1
Yan Gao,Xiayu Lia,Shuai Huang,Na Zhao,Jianshe Zhao
Three-dimensionally ordered macro-microporous 3DOM-ZIF-8-based peroxophosphotungstate (DIL-PW 4 ) is constructed to break the limitation of micropores inherent in traditional supported catalysts. The presence of ordered macropores expose more active sites and significantly enhance mass diffusion, thereby boosting catalytic activity, especially in reactions involving larger molecules. The prepared composite DIL-PW 4 @3DOM-ZIF-8 is verified by various characterization techniques and used as a catalyst for the extraction oxidation desulfurization of multi-component simulated fuel. The results showed that heterogeneous catalyst DIL-PW 4 @3DOM-ZIF-8 has a remarkable catalytic effect, with 97.03% total sulfides removal in 120 min. In addition, the stability and reusability of the catalyst DIL-PW 4 @3DOM-ZIF-8 are evaluated as important parameters for industrial applications. In addition, a possible mechanism based on experimental studies are proposed.
研究领域:
材料科学
·
化学工程
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2024
·
IF 13
Jiabao Dong,Xupeng Chai,Yucheng Xue,Shiyun Shen,Zhuo Chen,Zetao Wang,Eloy Yinwang,Shengdong Wang,Liang Chen,Fengfeng Wu,Hengyuan Li,Zehao Chen,Jianbin Xu,Zhaoming Ye,Xiongfeng Li,Qian Lu
Adoptive cellular therapy is a promising strategy for cancer treatment. However, the effectiveness of this therapy is limited by its intricate and immunosuppressive tumor microenvironment. In this study, a targeted therapeutic strategy for macrophage loading of drugs is presented to enhance anti-tumor efficacy of macrophages. K7M2-target peptide (KTP) is used to modify macrophages to enhance their affinity for tumors. Pexidartinib-loaded ZIF-8 nanoparticles (P@ZIF-8) are loaded into macrophages to synergistically alleviate the immunosuppressive tumor microenvironment synergistically. Thus, the M1 macrophages decorated with KTP carried P@ZIF-8 and are named P@ZIF/M1-KTP. The tumor volumes in the P@ZIF/M1-KTP group are significantly smaller than those in the other groups, indicating that P@ZIF/M1-KTP exhibited enhanced anti-tumor efficacy. Mechanistically, an increased ratio of CD4+ T cells and a decreased ratio of MDSCs in the tumor tissues after treatment with P@ZIF/M1-KTP indicated that it can alleviate the immunosuppressive tumor microenvironment. RNA-seq further confirms the enhanced immune cell function. Consequently, P@ZIF/M1-KTP has great potential as a novel adoptive cellular therapeutic strategy for tumors.
研究领域:
癌症生物学
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药学
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免疫治疗
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Dandan Yan,Min Li
The cement solidification method serves as an effective approach for the immobilization of heavy metal-containing waste. However, Cr(VI), a highly toxic substance, is inadequately stabilized and solidified within cement pastes, posing a significant risk of leaching. This study innovatively incorporated nano-porous nitrogen-doped carbon (NC), derived from ZIF-8 through carbonization, into the cement containing heavy metals for collaborative disposal mixing with K 2 CrO 4 (HMC-Cr). Subsequently, the hydration behavior, mechanical properties, and solidification mechanism of Cr(VI) in the composite cement pastes were examined. The experimental results revealed that, compared to ZIF-8, NC demonstrated significantly greater positive impacts on the hydration kinetics, compressive strength, and Cr(VI) immobilization capabilities of HMC-Cr cement. Compared with pure HMC-Cr pastes, the 28-day compressive strength of HMC-Cr/NC increased by 16.7 %, and the leaching concentration of heavy metal Cr decreased by 52.5 %. The HMC-Cr/NC pastes exhibited superior Cr(VI) solidification capacity, attributed to the appropriate pore size, excellent nucleation effect, and reduction properties of NC. The primary immobilization forms of Cr in HMC-Cr/NC pastes included CrO 4 2- -AFm, Cr(OH) 3 , and coordination structures involving C-NH. Consequently, NC nanomaterials derived from ZIF-8 serve as effective additives for enhancing the stable immobilization of Cr(VI) in the cement solidification treatment of heavy metal-containing waste.
研究领域:
环境科学
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材料科学
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土木工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2025
·
IF 6.3
Chen-Xiang Wang,Hao Yang,Li-Wei Liu,Ji-Peng Han,Xue-Fen Zhang
Background Superhydrophobic coatings have shown great promise in providing temporary corrosion protection for aluminum alloys. However, their long-term effectiveness is often compromised by poor mechanical durability and the lack of active protection. Methods In this study, we developed a novel protection coating by integrating a functional epoxy primer containing 8-hydroxyquinoline-loaded mesoporous SiO 2 nanocontainers (8-HQ@MSNs) and a superhydrophobic SiO 2 topcoat. Significant findings After chemical and structural characterization of 8-HQ@MSNs, its optimized content is determined to be 0.5 %. The resulting coating provides long-term protection for aluminum alloys in 3.5 wt. % NaCl solution over 30 days. Notably, the low-frequency impedance modulus of the scratched coating, even after immersion in NaCl solution for 12 h, is one order of magnitude higher than that of the coating lacking 8-HQ with a shorter corrosion duration (6 h). Furthermore, this coating exhibits a strong interfacial bond with aluminum alloys (Grade 0) and can withstand an abrasion distance of 1360 cm on 600 grit sandpaper under a 100 g load, as well as 140 min of continuous high-pressure water impact (25 kPa) without losing its superhydrophobic properties. This study is expected to contribute new insights into developing durable superhydrophobic coatings with active protection for aluminum alloys.
研究领域:
材料科学
·
腐蚀与防护
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表面工程
·
纳米复合材料
·
高分子涂层
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2024
·Vol. 416
·期 19
·4417-4426
·
IF 3.8
Zhu Zhentong,Wang Xiaoli,Wang Na,Zeng Chaoqin,Zhang Lei,Fan Jiamin,Yang Xin,Li Peizhe,Yuan Hongxia,Feng Yanjun,Huo Shuhui,Lu Xiaoquan
Artificial enzymes with high stability, adjustable catalytic activity, controllable preparation, and good reproducibility have been widely studied. Noble metal nanozymes, particularly gold nanoparticles (Au NPs), exhibit good catalytic activity, but their stability is poor. In this study, zeolitic imidazolate framework-8 (ZIF-8) was used as a carrier for Au NPs, thus improving the utilization efficiency and conservation stability of the nanozymes. A ZIF-8/Au nanocomposite with peroxidase activity and a raspberry-shaped structure was synthesized. In the assay, ZIF-8/Au catalyzed the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) to a blue product oxidized TMB (oxTMB). Glutathione (GSH) selectively inhibited this reaction, with a detection limit of 0.28 µM and linear range of 0.5–60 µM. Using the photo and chromaticity analysis functions, we developed a portable analysis method using a smartphone equipped with a camera module as a detection terminal for a wide range of rapid screening techniques for GSH. Preparation of raspberry-shaped ZIF-8/Au improved the catalytic activity of Au NPs and good results were demonstrated in serum, which suggests their promising application under physiological conditions. Graphical Abstract
研究领域:
纳米技术
·
分析化学
·
生物传感器
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
DESALINATION
·
2025
·
IF 9.8
Yilin Wu,Yanke Xu,Faguang Ma,Jingjing Zhen,Yue Li,Fanlei Kong,Ming Yan
In this study, modified hollow e-ZIF-8 nanoparticles with a hollow structure and hydroxyl-rich surface were ingeniously synthesized through a one-step etching method, thereby increasing the contact area and addressing the issue of stacking imprinting sites, fundamentally enhancing selectivity. Among these, the hollow structure of the e-ZIF-8 nanoparticles not only increased the interlayer spacing of the graphene oxide (GO) nanosheets, providing additional pathways for water molecules, but also, through π-π interactions, cross-linked the phenol-modified nanoporous metal-organic frameworks (MOFs) with the GO nanosheets, significantly enhancing the structural stability and anti-fouling capability of the composite membrane. The effects of different e-ZIF-8 addition amounts on membrane flux and hydrophilicity were investigated, constructing a GO-based imprinting structure on the stacked e-ZIF-8/GO nanosheet surfaces, offering a novel strategy to improve the selectivity and stability of the membrane. The maximum adsorption capacity of e-MG-IMs reached 38.35 mg g −1 , demonstrating good selective separation factors ( α RBV/ACV = 3.24, α RBV/AZT = 2.41 and α RBV/LAM = 4.21), as well as excellent permeation selectivity ( β ACV/RBV = 4.75, β AZT/RBV = 4.42 and β LAM/RBV = 5.92). In this study, the optimized regulation of GO nanosheets extended the molecular transport channels, facilitating the construction of more molecular recognition sites, thus positively impacting the separation performance of the imprinting membrane.
研究领域:
材料科学
·
药物分离工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2021
·Vol. 16
·期 15
·2146-2153
·
IF 4.568
Liling Lei,Yiwei Zheng,Xichen Zhang,Yutian Su,Xi Zhou,Shishan Wu,Jian Shen
Graphical A new zinc-ion hybrid capacitor assembled by using a Zn@annealed ZIF-8 anode and ZIF-8 derived C cathode provides a capacity of 135.5 mAh g −1 and an energy density of 108.4 Wh kg −1 with a power density of 800 W kg −1 at 1.0 A g −1 . Zn is a promising anode for aqueous energy storage owing to it intrinsic superior properties such as large capacity, abundant reserves, low potential and safety. But, the growth of dendrites during charge and discharge leads to a decrease in reversibility. In addition, further development of zinc-ion hybrid capacitors (ZICs) is seriously challenging because of the lack of an exceptional cathode. Herein, we use ZIF-8 annealed at 500 °C (annealed ZIF-8) as a host material for stable and dendrite-free Zn anodes. Utilization of annealed ZIF-8 results in dendrite-free Zn deposition and stripping as a result of its porous construction, which contains trace Zn. Furthermore, we firstly proposed innovative N,O dual-doped carbon which was designed by the derived ZIF-8 (ZIF-8 derived C) as cathode for high-energy and power-density ZICs. The new ZIC assembled by Zn@annealed ZIF-8 anode and ZIF-8 derived C cathode provides a capacity of 135.5 mAh g −1 and an energy density of 108.4 Wh kg −1 with a power density of 800 W kg −1 at 1.0 A g −1 . In addition, it shows outstanding cycling stability of 91% capacity retention after 6000 cycles at 5.0 A g −1 . Moreover, the solid-state ZICs can drive LEDs and smart watches. This ZIC holds promise for the practical application of supercapacitors.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2024
·
IF 1.3
Shuai Gao,Hongkun Long,Weigang Liu,Zhi Zhang,Shengqiang Qiu,Maoyi Yi,Jie Li
Poor safety of liquid electrolytes and low ionic conductivity of solid electrolytes under room temperature are two major constraints for high energy density, long-term stability and safety of lithium-ion batteries (LIBs). In order to remedy the deficiencies, a quasi-solid electrolyte (QSE) is developed by immobilizing liquid electrolyte into the host of porous 2-Methylimidazole zinc salt (ZIF-8), and then mixing them with solid polymer electrolyte solvent of polyoxyethylene (PEO). The QSE has an ionic conductivity of 0.44 mS cm −1 at 20 °C and 2.27 mS cm −1 at 50 °C. The assembled LiFePO 4 /QSE/Li batteries exhibit excellent electrochemical performance in a wide temperature range. A reversible capacity of 129.7 mAh g −1 at 0.5 C and 20 °C and high capacity retentation of 94.7% at 0.5 C and 50 °C are achieved after 100 cycles. Especially, the LiFePO 4 /QSE/graphite pouch full cell exhibits a capacity retention of 97.7% at 0.5 C and 25 °C. These results indicate that QSE is a suitable candidate for enhancing the electrochemical performance of LIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
固态离子学
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）