ACS Omega
·
2021
·
IF 3.512
Li Zhao,Guiming Niu,Fucheng Gao,Kaida Lu,Zhiwei Sun,Hui Li,Martina Stenzel,Chao Liu,Yanyan Jiang
The development of novel electrode materials for rapid and sensitive detection of neurotransmitters in the human body is of great significance for early disease diagnosis and personalized therapy. Herein, gold nanorod@zeolitic imidazolate framework-8 (AuNR@ZIF-8) core–shell nanostructures were prepared by controlled encapsulation of gold nanorods within a ZIF-8 assembly. The designed AuNR@ZIF-8 nanostructures have uniform morphology, good dispersion, a large specific surface area, and an average size of roughly 175 nm. Compared with individual ZIF-8 and AuNR-modified electrodes, the obtained core–shell-structured AuNR@ZIF-8 nanocomposite structure-modified electrode shows excellent electrocatalytic performance in the determination of dopamine (DA) and serotonin (ST). The designed AuNR@ZIF-8 exhibited a wide linear range of 0.1–50 μM and low detection limit (LOD, 0.03 μM, S/N = 3) for the determination of DA, as well as a linear range of 0.1–25 μM and low LOD (0.007 μM, S/N = 3) for monitoring ST. The improved performance is attributed to the synergistic effect of the high conductivity of AuNRs and multiple catalytic sites of ZIF-8. The good electroanalytical ability of AuNR@ZIF-8 for detection of DA and ST can provide a guide to efficiently and rapidly monitor other neurotransmitters and construct novel electrochemical sensors.
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DOI
高影响因子
LUMINESCENCE
·
2022
·Vol. 37
·期 7
·1109-1119
·
IF 2.613
Yongjuan Meng,Jinling Pu,Jiamei Gan,Jianping Li
A composite of the metal–organic framework compound ZIF-8 doped with CdSe quantum dots (QDs) with sensitive and stable luminescence was synthesized, and a molecularly imprinted electrochemiluminescence (ECL) sensor was constructed based on this composite. The ZIF-8@CdSe molecularly imprinted ECL sensor combines the high sensitivity of ECL and the high selectivity of molecular imprinting to realize the sensitive and specific detection of estriol. CdSe QDs and gold nanoparticles were encapsulated within ZIF-8 to obtain the ZIF-8@CdSe QDs/GNP (ZIF@CdSe/GNP) composite. Subsequently, the GNPs were further loaded on the surface of this composite to obtain the GNP/ZIF@CdSe/GNP composite. l -Cysteine was used to immobilize the GNP/ZIF@CdSe/GNP composite on the surface of a gold electrode to obtain the GNP/ZIF@CdSe/GNP-modified gold electrode. A molecularly imprinted polymer (MIP) film was prepared on the surface of the modified electrode by electropolymerization with o -phenylenediamine as the functional monomer and estriol as the template molecule. After elution, estriol could be specifically recognized by the cavities. The readsorption of estriol by the MIP can prevent the coreactant from reaching the electrode surface through the cavities, thereby weakening ECL. A good linear relationship existed between the ∆ECL and lg C of estriol concentrations of 1 × 10 −14 to 1 × 10 −9 mol·L −1 . The detection limit was as low as 8.9 × 10 −16 mol·L −1 . The sensor was applied in the determination of estriol in serum samples with a recovery of 97.0–102%.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Yunshi Liu,Rui Wang,Tong Zhang,Sen Liu,Teng Fei
The development of NO 2 gas sensors is of great importance for air quality monitoring and human health. In this work, In 2 O 3 and zeolitic imidazolate framework-8 (ZIF-8) heterostructures were synthesized and designed as efficient sensing materials for NO 2 detection. The ZIF-8 nanocrystals were uniformly deposited on In 2 O 3 nanofibers (NFs) by using a self-template strategy, where In 2 O 3 /ZnO NFs act as the source of Zn 2+ for the formation of ZIF-8 and as the template. By tuning the amount of Zn 2+ in the composite NFs, different morphologies from In 2 O 3 NFs with minimal ZIF-8 loading to an In 2 O 3 /ZIF-8 core-shell complex were obtained. The optimized In 2 O 3 /ZIF-8 NFs show a remarkably high response to 1 ppm NO 2 (R g /R a = 16.4) and enhanced humidity resistance due to the hydrophobicity of ZIF-8 in comparison with those of the pristine In 2 O 3 NF sensor (R g /R a = 4.9) at 140 °C. The gas sensing mechanism of In 2 O 3 /ZIF-8, which is based on electron transduction, surface chemistry, and the functional interface between the loaded ZIF-8 and In 2 O 3 matrix, was proposed. Additionally, the large number of pores, which were formed by the in situ conversion of ZnO grains in the matrix, ensures that all parts of the In 2 O 3 NFs are accessible to gases. This facile strategy paves the way for the design of metal oxide/MOF complex architectures with tunable metal centers for various applications, including gas sensing.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Mengmeng Zhang,Kun Yang,Junshuo Cui,Haibiao Yu,Yuejiao Wang,Weijun Shan,Zhenning Lou,Ying Xiong
With the ever-increasing of Rare Earth Elements (REEs) in various high technology applications, efficient recovery of REEs from liquid sources is becoming significantly important. In this work, ZIF-8 and UiO-66-NH 2 (U6N) are combined to form a 3D-agaric like core-shell structure hybrid material (U6N@ZIF-8-20), which exhibits good performance in REEs extraction. Due to the abundant adsorption sites of ZIF-8 and the excellent water stability of UiO-66-NH 2 , 3D-agaric like U6N@ZIF-8-20 showed quick adsorption rate (only 10 min to reach equilibrium), high adsorption capacity and selectivity for REEs from water compared to other reported adsorbents. Maximum adsorption capacities of U6N@ZIF-8-20 for neodymium (Nd(III)), europium (Eu(III)), gadolinium (Gd(III)) and erbium (Er(III)) achieved to 249.90, 295.28, 316.22 and 340.95 mg g -1 , respectively. U6N@ZIF-8-20 has superiority in selective adsorption of REEs from Cd(II), Zn(II), Cu(II), Mn(II) and Co(II) coexistence solution. The order of adsorption capacities for REEs is in agreement with the order of their electronegativity, ionic radius and charge density. Moreover, U6N@ZIF-8-20 showed better water stability and recyclability than single MOF. Overall, MOF@MOF hybrid material has efficiency in REEs separation from solutions, and has great advantage in the application of wastewater treating.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Yang Chen,Chengyin Yang,Xiaoqing Wang,Jiangfeng Yang,Jinping Li
Solvent-evaporated conversion (SEC) and steam-assisted conversion (SAC) have been developed to prepare the typical metal-organic frameworks (MOFs) Cu-BTC (HKUST-1) and ZIF-8 using a unique solvent recovery strategy using zeolite. As a green circulation medium, zeolite Na-4A loading and removal of solvent (H 2 O and EtOH) can transport solvent in the vapor phase and avoid solvent condensation, which was the defect in previous SAC syntheses of MOFs, and achieves efficient solvent recovery as well as being an economical and green synthetic process. Moreover, SEC and SAC processes exhibited different mechanisms during the multi-stage reaction and solid diffusion reaction, respectively and both can synthesize the desired products in 12 h. These two methods for MOFs preparation were characterized in detail using XRD, SEM and N 2 adsorption during the different growing stages. According to polar molecules (H 2 O and EtOH) steam-assisted in those synthesis, polar destruction molecules (H 2 O, NH 3 ) adsorption and stability of Cu-BTC and ZIF-8 was investigated.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hui Ye,Xiao Zhang,Xijie Wang,Chuan Gao,Shurui Han,Jing Lv,Jinke An,YuZhong Zhang,Lizhi Zhao,Qingping Xin,Ligang Lin,Xiaoli Ding
Membranes are extensively utilized for protein separation and purification; however, fouling is a significant challenge and limits further practical application. Biocatalytic membranes have attracted much attention due to their potential anti-fouling and self-cleaning properties. Herein, biocatalytic nanofibrous porous membranes were fabricated through an in-situ zeolitic imidazolate frameworks (ZIF-8) anchored and trypsin incorporation strategy. Ethylene vinyl alcohol copolymer (EVAL) nanofibers, doped with Zn(Ⅱ) or ZIF-8, were fabricated via electrospinning, and then ZIF-8 layers were anchored onto the surface of the nanofibers via in-situ growth. Continuous ZIF-8 layers were observed and almost completely covered the surface of the nanofibers, providing 2.7-fold trypsin loading than ZIF-8 crystals in solution. For the biocatalytic nanofibrous membranes, the trypsin loading were both exceeded 270 µg cm −2 and the maximum reaction rate values of membranes during filtration increased by 120 % than that of free trypsin. Enhanced hydrophilicity and protein-digestive functionality contributed to high self-cleaning properties of the membranes. The biocatalytic nanofibrous membranes demonstrated 2-fold flux recovery and improved BSA resistance compared to the pristine membrane after BSA filtration. Moreover, the membranes retained high anti-fouling properties after five reuse cycles, utilizing only a simple and cost-effective washing operation. Such biocatalytic nanofibrous membranes hold great promise for enhanced anti-fouling and self-cleaning performance in water applications.
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高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Lei Zhang,Yong Shi,Qinyu Xu,Jingbo Yu,Qingya Li,Lirong Huang,Xinxin Kang,Shujun Wang,Jie Qiao
Although a protective shell based on a metal-organic framework (MOF) can effectively improve the remediation of polycyclic aromatic hydrocarbons (PAHs) by microorganisms, the functional characteristics of the shell are often limited by the surface charge, chemical properties and intrinsic strain characteristics. This study explored the potential of mixed organic acids (MA) as an eco-friendly modifier for zeolite imidazolate framework-8 (ZIF-8), facilitating the formation of a biomimetic mineralized shell around Bacillus subtilis ZL09-26. The addition of MA into the ZIF-8 protective shell was found to stimulate growth and bolster cell viability. Notably, adding MA contribute resulted in a 1.98- fold enhancement of the PHE degradation efficiency. After five cycles of reuse, ZIF-8-MA@ B. subtilis ZL09-26 still maintained almost 90 % of the initial PHE degradation ability. Proteomic analysis revealed a coordinated regulation of multiple metabolic pathways that facilitated PHE uptake and degradation, including central carbon metabolism, direct PHE biodegradation, oxidative phosphorylation, aminoacyl-tRNA biosynthesis, fatty acid biosynthesis, ABC transporters, and the biosynthesis of valine, leucine, isoleucine, and lysine. This work broadens the application potential of biomineralized microorganisms, providing novel strategies for the sustainable bioremediation of xenobiotic pollutants in the environment.
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DOI
PubMed
高影响因子
Membranes
·
2024
·Vol. 14
·期 12
·272
·
IF 3.3
Yu Ma,Rui Jia,Zhen-Liang Xu,Aida Aibulatova,Xiao-Gang Jin,Yin-Xin Fang,Ming-Xiao Zhang,Sun-Jie Xu
Forward osmosis (FO) technology, known for its minimal energy requirements, excellent resistance to fouling, and significant commercial potential, shows enormous promise in the development of sustainable technologies, especially with regard to seawater desalination and wastewater. In this study, we improved the performance of the FO membrane in terms of its mechanical strength and hydrophilic properties. Generally, the water flux ( J w ) of polyisophenylbenzamide (PMIA) thin-film composite (TFC)-FO membranes is still inadequate for industrial applications. Here, hydrophilic polydopamine (PDA)@ zeolitic imidazolate frameworks-8 (ZIF-8) nanomaterials and their integration into PMIA membranes using the interfacial polymerization (IP) method were investigated. The impact of PDA@ZIF-8 on membrane performance in both pressure-retarded osmosis (PRO) and forward osmosis (FO) modes was analyzed. The durability and fouling resistance of these membranes were evaluated over the long term. When the amount of ZIF-8@PDA incorporated in the membrane reached 0.05 wt% in the aqueous phase in the IP reaction, the J w values for the PRO mode and FO mode were 12.09 LMH and 11.10 LMH, respectively. The reverse salt flux ( J s )/J w values for both modes decreased from 0.75 and 0.80 to 0.33 and 0.35, respectively. At the same time, the PRO and FO modes’ properties were stable in a 15 h test. The incorporation of PDA@ZIF-8 facilitated the formation of water channels within the nanoparticle pores. Furthermore, the J s / J w ratio decreased significantly, and the FO membranes containing PDA@ZIF-8 exhibited high flux recovery rates and superior resistance to membrane fouling. Therefore, PDA@ZIF-8-modified FO membranes have the potential for use in industrial applications in seawater desalination.
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DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yuxin Song,Huan Xing,Liang Ma,Fengxia Wang,Mingfang Zhang,Zherui Wan,Xuewen Li,Yan Tang,Guang Yang
Heavy metal ions (HMIs) pose a great threat to human health because of their irreversible detrimental effects, thus the fabrication of a convenient sensing platform that is capable of tracing HMIs with high accuracy remains a major challenge. Herein, a portable strategy for the fabrication of electrochemical sensor was described in which Ag-ZIF-8 and polyaniline (PANI) were combined and dropwise to glassy carbon electrode (GCE) for the recognition of Pb 2+ and Cu 2+ by DPSV. The structures and properties of the proposed working electrode (PANI/Ag-ZIF-8/GCE) were studied by TEM, SEM, FT-IR, XRD, CV and DPSV. Additionally, the results revealed that the designed sensing platform of the PANI/Ag-ZIF-8/GCE displayed excellent electrochemical performance for the simultaneous and individual tracing of HMIs including (Pb 2+ and Cu 2+ ) with satisfactory sensitivity and selectivity due to the excellent conductivity of PANI and large surface areas with abundant active sites on Ag-ZIF-8. The LODs for individual recognition of Pb 2+ and Cu 2+ were 0.003 μM and 0.006 μM, respectively. The LODs of simultaneous tracing of Pb 2+ and Cu 2+ were 0.004 μM and 0.008 μM, respectively. Moreover, real sample analysis of tap water and the Songhua River indicated good results with higher reliability for the detection of target HMIs, which may be beneficial for the fabrication of MOF-based probes by a simple strategy for the detection of HMIs to safeguard people’s lives and health.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Jianzhong Ma,Chongxin An,Lei Zhang
In this work, we synthesized an acid-responsive zinc metal–organic framework (ZIF-8) at room temperature by a solvent method, which can not only be used as an antibacterial by releasing zinc ions but also as a carrier for antibacterial material encapsulation. Subsequently, the broad-spectrum antibacterial triclosan (TCS) was encapsulated in ZIF-8 by the impregnation method, and a long-term antibacterial and antimildew material with slow-release effect TCS@ZIF-8 was synthesized successfully. The encapsulation rate and drug loading rate of TCS@ZIF-8 prepared by adjusting the mass ratio of ZIF-8 and TCS were 71.9 and 25.1%, respectively. Further, TCS@ZIF-8 was introduced into polyacrylate (PA) emulsion, and PA/TCS@ZIF-8 nanocomposite emulsion was prepared successfully by the physical blending method. When the pH of the coating surface became slightly acidic due to the metabolic byproducts of microbial growth, ZIF-8 in PA/TCS@ZIF-8 disintegrated to release Zn2+ and TCS, which can effectively kill bacteria and mold. When the dosage of TCS was 4.0 wt %, the antibacterial rate of the PA/TCS@ZIF-8 nanocomposite film against Escherichia coli and S. aureus was 100 and 97.3%, respectively. Finally, PA/TCS@ZIF-8 nanocomposite emulsion-coated leather was prepared by the spraying method. Compared with the control group that did not use ZIF-8-encapsulated TCS, PA/TCS@ZIF-8 nanocomposite emulsion-coated leather not only showed better antibacterial and antimildew effects but also showed long-term antibacterial and antimildew performance even after being treated under hot and humid environments of 90% humidity and 40 °C for 30 days. Overall, this study not only provides theoretical guidance into the preparation of long-term antibacterial and antimildew coatings for leather but also has great application prospects in paper, clothing, furniture, and other fields, which has great significance in protecting consumers from the invasion of bacteria and mildew.
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DOI
PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2022
·Vol. 36
·期 12
·e6888
·
IF 4.072
Tiedong Sun,Zhengya Yue,Yan Song,Jiatong Ni,Wenxin Wang,Junge Zhao,Jialun Li,Yuan Sun,Bin Li
Chemodynamic therapy (CDT) is a highly effective clinical treatment strategy based on the Fenton or Fenton-like responses. However, its efficacy has been greatly limited by the complex tumor microenvironment, TME, such as the low levels of H 2 O 2 and the overexpression of the glutathione (GSH). Polyoxometalates (POMs) are compounds that consist of anionic transition metal oxide clusters, such as tungsten (W) and molybdenum (Mo), and notably, these compounds have excellent redox properties in biological systems that can be utilized therapeutically. Therefore, POM-CaO 2 @ZIF-8 nanoparticles (NPs) have been synthesized and used as a mediator to develop an electrically enhanced CDT strategy. It is hoped that the simultaneous modulation of endogenous (the H 2 O 2 generated by CaO 2 NPs and GSH depletion by POM) and exogenous (Electric, E) stimulation enhanced Fenton-like responses will lead to better therapeutic results. Such a treatment strategy has shown excellent tumor cell killing effects in both in vitro and in vivo studies.
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高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Jingxuan Zhao,Shulin Sun,Huiliang Zhang,Zhixin Zhang,Heran Zhao,Mingyu Wang,Yan Zhao,Hongwei Pan
The treatment of complex wastewater containing dyes and oils remains a significant challenge due to the limitations of conventional methods, including high cost and secondary pollution. In this study, a multifunctional composite membrane with a hierarchical protective structure was developed for efficient and simultaneous removal of dyes and oils. The membrane was constructed by sequentially depositing carboxylated carbon nanotubes (CNTs-COOH), polydopamine-coated ZIF-8 (PDA@ZIF-8), and carboxymethyl chitosan (CS) onto a PVDF substrate. The resulting membrane exhibited exceptional structural stability, superhydrophilicity, and underwater oleophobicity. The synergistic effects of the multilayer architecture which including electrostatic adsorption, high-surface-area adsorption, and dynamic hydration layer formation, enabled high rejection rates for dyes and oils and excellent flux recovery over multiple filtration cycles. The membrane also demonstrated outstanding mechanical and chemical stability under harsh conditions. This work provides a robust and scalable strategy for designing advanced separation membranes with enhanced antifouling performance and long-term operational stability.
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高影响因子
危险品化学品经营许可证（带存储）