ACS Applied Nano Materials
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2020
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IF 0
Xin Liu,Yinsheng Xu,Qianqian Liu,Wenjun Zhang
Metal–organic frameworks (MOFs) are a platform with multiple luminescent centers resulting from the multifaceted nature of their structure. Herein, via a facile postsynthetic modification method applied to the MOF (1,4-dicarboxybenzene, 2,6-pyridinedicarboxylic acid, and zirconium chloride were used as the linkers and metal precursor), the lanthanide-functionalized hybrid nanomaterial Eu3+/MOF(xHQ) (HQ = 8-hydroxyquinoline) is prepared. Luminescence of the Eu3+/MOF(xHQ) nanomaterial was investigated at the excitation wavelength of 308–365 nm, where there are two kinds of luminescence, that is, the MOF(xHQ) emission and the Eu3+ emission. After studying the luminescence of the MOF(xHQ), the luminescence mechanism, that is, the preferential absorption enhancement (PAE) mechanism, was proposed, to reveal the PAE of the MOF over HQ. Notably, the Eu3+/MOF(xHQ) achieves multicolor emissions by changing the excitation wavelength that shows great potential applications in the field of white light materials and anticounterfeiting. Moreover, the PAE mechanism makes the existing MOF more extensive and opens the strategy to the reasonable design of dimming aspects for this type of MOF materials.
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DOI
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
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IF 8.4
Baowen Fan,Xinyue Lei,Yajian Qin,Zhilin Ren,Wei Gong,Jing Li,Shuang Cai
Residues of tetracycline antibiotics pose a significant threat to the ecological environment and human safety, drawing widespread attention. In this study, a novel multifunctional nanozyme, Fe 3 O 4 QDs@ZIF-8, was synthesized by loading Fe 3 O 4 quantum dots (QDs) onto zeolitic imidazolate framework-8 (ZIF-8) using a straightforward and mild co-precipitation method at room temperature. The nanozyme exhibited favorable peroxidase-like (POD-like) activities, with K m values of 0.24 mM for TMB and 0.53 mM for H 2 O 2 , respectively. The inhibition of the POD-like activity of the nanozyme by tetracycline (TC) facilitated the development of a colorimetric and visual dual-modal detection system for TC, with detection limits of 0.015 mg/L and 0.12 mg/L, respectively. Furthermore, the nanozyme exhibited a porous structure similar to that of ZIF-8, with a specific surface area and pore diameter measured at 927.4 m 2 /g and 5.7 nm, respectively, resulting in an impressive adsorption capacity for TC of 1625.35 mg/g. Additionally, the band gap value of 4.16 eV indicates a strong photocatalytic oxidizing ability, enabling nearly complete degradation of the remaining TC after adsorption. The total removal efficiency of TC through adsorption and photocatalytic degradation reached 97.75 %. In the detection and remediation of TC in tap water and river water samples, Fe 3 O 4 QDs@ZIF-8 demonstrated superior sensitivity compared to high-performance liquid chromatography and exhibited a significantly higher removal efficiency than powdered activated carbon. A diagnostic and therapeutic integration platform for TC based on Fe 3 O 4 QDs@ZIF-8 has been successfully established. This platform integrates adsorption, detection, and photocatalytic degradation, providing a novel dual-mode detection and dual-procedure treatment for tetracycline antibiotic residues in the environment.
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高影响因子
International Journal of Nanomedicine
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2024
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IF 6.6
Yutong Zheng,Xiaoyi Cai,Gui Chen,Dexuan Xiang,Wei Shi,Jianliang Shen,Bailin Xiang
Purpose: Recently, Single-atom-loaded carbon-based material is a new environmentally friendly and stable photothermal antibacterial nanomaterial. It is still a great challenge to achieve single-atom loading on carbon materials.Materials and Methods: Herein, We doped single-atom Ag into ZIF-8-derived porous carbon to obtain Ag-doped ZIF-8-derived porous carbon(AgSA-ZDPC). The as-prepared samples were characterized by XRD, XPS, FESEM, EDX, TEM, and HAADF-STEM which confirmed that the single-atom Ag successfully doped into the porous carbon. Further, the photothermal properties and antimicrobial activity of AgSA-ZDPC have been tested.Results: The results showed that the temperature increased by 30 °C after near-infrared light irradiation(1 W/cm2) for 5 min which was better than ZIF-8-derived porous carbon(ZDPC). It also exhibits excellent photothermal stability after the laser was switched on and off 5 times. When the AgSA-ZDPC concentration was greater than 50 μg/mL and the near-infrared irradiation was performed for 5 min, the growth inhibition of S. aureus and E. coli was almost 100%.Conclusion: This work provides a simple method for the preparation of single-atom Ag-doped microporous carbon which has potential antibacterial application.
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高影响因子
Food Bioscience
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2025
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IF 5.9
Anqi Sun,Shuo Qi,Yu Li,Yiyao Wu,Yin Zhang,Zhouping Wang
Sensitive and selective determination of azlocillin (Azl) is of great significance to food safety and human health as it is recognized as the most prevalently utilized β-lactam antibiotics. Herein, we develop a highly sensitive fluorescence aptasensor selective, and sensitive, determination of Azl in food samples. Initially, the aptamer A-58 with the highest affinity(K d = 64.5 ± 7.2 nM)was obtained by means of truncation. Subsequently, a highly stable aqueous dispersed perovskite nanocrystal MAPbBr 3 @ZIF-8 was synthesized and used as a fluorescent marker in aptasensors. The aptasensor was constructed by using MAPbBr 3 @ZIF-8 as the fluorescence signal source, aptamers as the specific recognition molecules, and AuNPs as a quenching agent. This design integrates the excellent optical properties of perovskite, the fluorescence quenching ability of AuNPs and the specificity of aptamer, exhibiting great promising for trace analysis of Azl in food samples. Under the optimal experimental conditions, the linear detection range of the developed aptasensor method spans from 0.1 to 100 ng/mL, with a detection limit of 0.025 ng/mL. The developed MAPbBr 3 @ZIF-8 based aptasensor has been effectively utilized for the quantification of azlocillin in milk, demonstrating significant potential in the realm of antibiotic detection.
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高影响因子
Journal of Water Process Engineering
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2024
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IF 6.3
Xu Meng,Chengzhi Song,Zhenglong Xing,Manuel J. Lis Arias,Junfeng Yan,Qiang Ren,Yanli Xiang,Liping Liang
An efficient hydrophobic and lipophilic cotton fabric was designed for oil/water separation. ZIF-8 (zeolitic imidazolate framework-8) nanocrystals were synthesized and subsequently uniformly mixed with a GO (graphene oxide) dispersion, and then the cotton fabric was immersed in a pre-crosslinked PDMS (polydimethylsiloxane) solution and the mixture of ZIF-8 and GO to form rough and dense surface morphology and to achieve hydrophobic modification. Its surface morphologies, chemical structures , contact angles, and oil/water separation performances were characterized. The ability of prepared fabric with a separation efficiency was better than 95 % on average for various types of oil/water mixtures demonstrated the hydrophobic/oleophilic property, meanwhile, demonstrated a noteworthy degree of durability. It holds significant practical implications for the development of environmentally friendly and highly efficient materials for oil/water separation.
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Journal of Energy Storage
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2024
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IF 8.9
Aoji Liang,Tianyu Hou,Hui Peng,Xuan Xie,Wenjuan Li,Shuzhen Cui,Wenbin Li,Guofu Ma
Oxygen reduction reaction (ORR) electrocatalysts have the advantages of high activity, high durability and inexpensive, which are promising for promoting the mass commercialization of renewable fuel cells and metal-air batteries. Uniform N and S co-doping can enhance the integral activity and conductivity of catalysts has been shown to be important in ORR electrocatalysis. In this study, cobalt-modified N, S co-doped carbon nanofibers (Co-NSC-R) were successfully synthesized by using ZIF-8 as a template-assisted pyrolysis. The N, S co-doped carbon matrix firmly anchored the Co-N x sites on the entangled carbon fibers, which efficiently regulated the electronic structure of the Co-N x -C sites and greatly ensured their oxygen electrocatalytic activity. In addition, the half-wave potential of the Co-NSC-R catalyst reaches 0.861 V and has superior resistance to methanol intoxication and cycling stability. The assembled zinc-air batteries (ZABs) have a maximum power density of 73.1 mW cm −2 , a high specific capacity of 752.7 mAh g −1 and a long-term durability of 94 h. This work provides ideas for the application of metal-modified heteroatom-doped porous carbon nanofibers as excellent ORR catalysts.
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TALANTA
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2024
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IF 5.6
Bin Yang,Jia Liu,Xin Liu,Shiyue Niu,Fengming Zhang,Yuting Wang,Daqian Song,Shuyun Bi
The high efficient surface-enhanced Raman scatterring (SERS) methods to detect thiacloprid and imidacloprid were established using ZIF-8-wrapped Ag nanoparticles (AgNPs) modified with β -cyclodextrin ( β -CD). The substrate of ZIF-8/ β -CD@AgNPs was characterized by ultraviolet visible spectra (UV–vis), thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM). The interaction between the substrate and thiacloprid/imidacloprid was also explored. The optimum measurement conditions were obtained by response surface model based on single-factor experiments. Enhancement factors (EFs) of thiacloprid and imidacloprid were respectively 2.29 × 10 6 and 2.60 × 10 6 . A good linearity between the scattering intensity and the concentration of thiacloprid/imidacloprid within 3–1000 nmol L −1 /6–400 nmol L −1 was established. The interference experiments indicated that the methods had good selectivity . The SERS methods were successfully applied to detect thiacloprid and imidacloprid in several vegetables samples. The recoveries ranged from 95.5 % to 105 % (n = 5). The detection limits (LODs) (S/N = 3) for thiacloprid and imidacloprid were 1.50 and 0.83 nmol L −1 , respectively.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Peng Li,Chao Ma,Ning Li,Chi Tang,Zhaolin Lv,Zhenjie Gu,Zhihua Qiao,Chongli Zhong
Metal-organic framework (MOF) membranes have demonstrated significant potential in replacing traditional polymer membranes for gas separation. However, synergistically enhancing gas permeance and selectivity remains challenging in MOF membrane design, particularly when framework pore apertures surpass gas kinetic diameters. Here, an innovative strategy is reported for engineering ultrathin ZIF-8 membranes with chemical adsorption sites via polymer bidirectional induction. The polyethyleneimine (PEI)-Zn 2+ interface layer facilitated the formation of ultrathin ZIF-8 membranes (~78.4 nm) by guiding small-sized crystal growth. Meanwhile, the competitive coordination of PEI with 2-methylimidazole induced the pendant of partially coordinated ligands in the ZIF-8 cavity to form chemisorption sites. This structural alteration enabled the in-situ chemical adsorption of CO 2 in the cavity of ZIF-8, thus contracting the window apertures and enhancing the molecular sieving efficiency. As a result, the ultrathin ZIF-8 membrane exhibited an excellent H 2 /CO 2 ideal selectivity of 34.2 with a remarkable H 2 permeance of 7143.6 GPU in single-gas tests, outperforming other reported ZIF-8 membranes. During mixed-gas H 2 /CO 2 testing, the in situ structural changes demonstrated robust pressure-performance stability and long-term gas separation capability. This work advances the development of ZIF-8 membranes for efficient separation of H 2 /CO 2 , and offers a feasible design principle and theoretical guidance for MOF-based gas separation membranes.
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高影响因子
ENVIRONMENTAL RESEARCH
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2024
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IF 7.7
Lingrui Zhang,Li Zhao,Yating Tan,Xiaobo Gong,Meng Zhu,Yong Liu,Yucheng Liu
Oil/water separation has become a global concern due to the increasing discharge of multi-component harmful oily wastewater. Super wetting membranes have been shown to be an effective material for oil/water separation. Ultra-high flux stainless-steel meshes (SSM) with superhydrophilicity and underwater superoleophobicity were fabricated by tannic acid (TA) modified ZIF-8 nanoparticles (TZIF-8) and two-dimensional MXene materials for oil/water separation. The TZIF-8 increased the interlayer space of MXene, enhancing the flux permeation (69,093 L m −2 h −1 ) and rejection of the composite membrane (TZIF-8@MXene/SSM). The TZIF-8@MXene/SSM membrane showed an underwater oil contact angle of 154.2°. The membrane maintained underwater superoleophobic after stability and durability tests, including various pH solutions, organic solvents, reusability, etc. In addition, the oil/water separation efficiency of TZIF-8@MXene/SSM membranes was higher than 99% after treatment in harsh conditions and recycling. The outstanding anti-fouling, stability, durability, and recyclability properties of TZIF-8@MXene/SSM membrane highlight the remarkable potential of membranes for complex oil/water separation process.
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2024
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IF 3.8
Yanbo Tian,Abdul Majid,Yuewei Zhang,Liju Tan,Huiru Li,Na Wang,Jiangtao Wang
In this study, molecularly imprinted polymers (MIPs) were prepared for the specific recognition of organophosphorus pesticides and a rapid, efficient and simple method was established for the detection of dimethoate (DIT) in food samples. Fe 3 O 4 magnetic nanoparticles were synthesized by co-precipitation, and Fe 3 O 4 /ZIF-8 complexes were prepared by a modified in-situ polymerization method, and then magnetic molecularly imprinted polymers (MMIPs) were prepared and synthetic route was optimized by applying density functional theory (DFT). The morphological characterization showed that the MMIPs were coarse porous spheres with an average particle size of 50 nm. The synthesized materials are highly selective for the organophosphorus pesticide dimethoate with an adsorption capacity of 461.50 mg·g −1 and are effective resistance to matrix effects. A novel method for the determination of DIT in cabbage was developed using the prepared MMIPs in combination with HPLC. The practical results showed that the method can meet the requirements for the determination of DIT in cabbage with recoveries of 85.6–121.1 % and detection limits of 0.033 μg·kg −1 .
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DESALINATION
·
2025
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IF 9.8
Yanan Song,Rui Zhang,Baoyuan Dong,Yuan Liu,Mingming Zhang,Xiaoxue Hu,Jiake Li,Jianxian Zeng,Kaipeng Cheng,Lelin Zeng,Jie Shen
To address the persistent challenges of low separation efficiency and severe membrane fouling in water treatment, we engineered multifunctional mixed matrix membranes (MMMs) through a facile one-step phase inversion method by incorporating zeolitic imidazolate framework-8 (ZIF-8) nanoparticles (0.1–1.0 wt%) into a polyethersulfone (PES) matrix. The effects of ZIF-8 loading (0.1–1.0 wt%) on the morphology, hydrophilicity, porosity, pore size, water flux of the MMMs were investigated. The optimal MMMs delivered a water flux of 299.2 L/m 2 ·h, surpassing the pure PES membrane by 65.90 %. Furthermore, the optimized MMMs demonstrated a 516 % increase in permeate flux along with a 113 % increase in bovine serum albumin (BSA) rejection rate simultaneous, indicating their potential to break through the trade-off effect. The improved rejection rate of BSA was attributed to size exclusion and electrostatic repulsion, originating from the introduction of ZIF-8 nanoparticles. In addition, the rejection rate of Congo Red (CR), Rhodamine B (RhB) and tetracycline hydrochloride (TCH) elevated from 40.94 %, 15.40 % and 59.33 % to 95.40 %, 37.40 % and 96.80 %, respectively. This enhancement stems from the incorporated ZIF-8 nanoparticles, which simultaneously modulated the MMMs' structure and imparted specific interactions: Electrostatic attraction and π-π stacking to CR, electrostatic repulsion and π-π stacking to RhB, and π-π stacking to TCH. Furthermore, the MMMs exhibited improved antifouling performance with the increased flux recovery ratio and reduced irreversible fouling ratio. This facile one-step engineering strategy provides a scalable and efficient route to fabricate high permeability, multifunctional MMMs with increased rejection and improved antifouling performance for integrated separation of proteins, dyes, and antibiotics in complex wastewater.
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Advanced Energy Materials
·
2025
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IF 26
Lin Huang,Xing Wang,Zihao Li,Shuyue Li,Lei Dong,Juan Wang,Keyu Xie
Interfacial engineering is universally acknowledged as a dependable methodology to address the aqueous zinc metal interface issues. Although it is quite effective, the introduction of a modification layer impedes interfacial ion transport kinetics to some extent. Addressing this trade-off between stability and ion flux is critical for advancing zinc-based energy storage systems. Herein, a layered titanate (H 1.07 Ti 1.73 O 4 , HTO) medium layer enabling fast Zn 2+ transport and ultrahigh Zn 2+ concentration on the zinc anode surface is proposed. It is demonstrated that HTO uniquely facilitates Zn 2+ enrichment through the exchange of interlayer H + ions, achieving an exceptionally high Zn 2+ adsorption concentration of 8.35 m , far exceeding that of electrolyte (2 m ZnSO 4 ). The HTO layer serves as a dynamic ion transport bridge, establishing a continuous conductive pathway, and its inherent negative charge to selectively block sulfate anion (SO 4 2− ) penetration, thus exhibiting dual functionality as an ion conductor and anion sieve. The protected anode (Zn@HTO) exhibits exceptional stability, achieving nearly 2300 h cycling stability at a current density of 0.5 mA cm −2 and over 3900 h at 5 mA cm −2 . Furthermore, Zn@HTO//ZnVO full cell demonstrates prolonged operational stability. This strategy provides a significant stride in breaking through the limitation of electrolyte concentration, thereby enabling fast, stable electrochemical reactions.
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高影响因子
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