JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Yiming Liu,Weixuan Pan,Hui Zhang,Ningxin Geng,Liangxu Jiang,Jiaan Bao,Huiwen Wu,Qi Liu
In this study, a composite aerogel was synthesized through the in situ integration of ZIF-8 within a sodium alginate (SA) framework, followed by cross-linking and freeze-drying. SA@ZIF-8 demonstrated enhanced adsorption capacity and reusability. The introduction of ZIF-8 improved the aerogel’s surface properties and generated abundant porous adsorption sites. At 298 K, the composite exhibited a maximum theoretical adsorption capacity of 200.4 mg g −1 for tetracycline (TC). The adsorption process of SA@ZIF-8 for tetracycline followed the pseudo-second-order kinetic model and the Langmuir isotherm model. The adsorption mechanisms include synergistic effects, hydrogen bonding, coordination bonding, electrostatic attractions, and π–π interactions. In addition, following ten adsorption-desorption cycles, the material consistently demonstrated a removal efficiency surpassing 65.7 %. On the whole, this study demonstrates an efficient biomass adsorbent for the removal of tetracycline from drain water. The prepared composite aerogel exhibits excellent reusability for efficient tetracycline removal from wastewater, demonstrating strong potential for practical water treatment applications.
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Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 11
·3988-3996
·
IF 5.7
Shuo Guan,YunHao Ning,Hongda Chen,Beiju Huang,Bao Zhang,Chuantong Cheng
Crystal engineering based on the additive passivation of defects in perovskite crystals is vital for improving crystal quality and tuning the optoelectronic properties of perovskites. Doping metal–organic framework materials (MOFs) into halide perovskites is one of the emerging methods to improve the optoelectronic properties of perovskites. Herein, a simple and effective method to dope metal–organic framework nanoparticles into organic–inorganic halide perovskite MAPbI3 films is proposed. Zeolite imidazole framework-8 (ZIF-8) nanoparticles can be uniformly dispersed in MAPbI3 perovskite films. ZIF-8 nanoparticles can effectively passivate the defects in the MAPbI3 perovskite layer, and the crystalline quality of the perovskite films is improved after doping with ZIF-8. Meanwhile, planar conductive photodetectors and photodetector arrays were prepared with perovskite films. A two-fold increase was observed in the photocurrent and photoresponsivity of photodetectors doped with ZIF-8, and the detectivity reached 8.01 × 1011 Jones. The photodetectors maintained long-term operation and environmental stability and could run at 1.2 V bias for 230 s without attenuation, retaining 90% of the initial photoresponsivity after being stored at 30–35 °C (R.H. 40%) for 14 days. In addition, we prepared perovskite photodetector arrays. The prepared 10 × 10 photodetector array realizes the detection and signal transmission of image information.
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Canadian Journal of Chemistry
·
2022
·Vol. 100
·期 6
·
IF 1.051
Junyong Sun,Xian Liu,Like Chen,Lijun Peng,Xitian Peng,Tian Gan
Herein, polyvinylpyrrolidone-stabilized Au nanorods were controllably implanted into ZIF-8 to form a well-uniformed AuNRs@ZIF-8 electrocatalyst with a multicore-shell structure. After characterizing the chemical and physical properties, a novel electrochemical sensing platform was fabricated for 2-chlorophenol (2-CP) monitoring based on the AuNRs@ZIF-8 modified glassy carbon electrode. Due to the unique electrochemical property of AuNRs cores and ultra-porous architecture of ZIF-8 shell, the electrocatalyst would effectively accelerate the electron transfer and greatly improve the electrochemical response of 2-CP. Under the optimized experimental conditions, the oxidation peak current of 2-CP enhanced linearly with the increase of its concentration between 0.010 and 40 μM, and the limit of detection was 3.6 nM based on S/N = 3. Meanwhile, the prepared AuNRs@ZIF-8 electrode showed favorable stability, reproducibility, and selectivity, which could be applied to the accurate analysis of 2-CP in aquaculture with standard addition recovery ranging from 96.67% to 104.0%.
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JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Taotao Ji,Jiahui Yan,Yongfu He,Wenjing Hu,Yuan Peng,Weishen Yang,Yi Liu
Despite their huge potential in C 3 H 6 refinement, ZIF-8 membranes still struggle to achieve stable production of high-purity C 3 H 6 , owing to their fluctuant performances under changing operating conditions. In this study, a previous low-temperature synthetic protocol was further optimized to improve the microstructure of ZIF-8 membranes for pressure-resistent C 3 H 6 /C 3 H 8 separation through precisely regulating the reaction temperature between −15 °C and 5 °C. The elevation of reaction temperature gave rise to reduced grain boundary defects at the cost of increased membrane thickness. Of particular note, carrying out reaction between −2.5 °C and 2.5 °C assured an exact balance between upward intergrowth and inner penetration and thus, the formation of well-intergrown semi-confined ZIF-8 membrane featuring pressure-resistant C 3 H 6 /C 3 H 8 separation even at operating temperature as high as 125 °C. At feed pressure of 7 bar, our membrane remained a separation factor approaching 190 with C 3 H 6 permeance up to 2.9×10 -8 mol m -2 s -1 Pa -1 , thus demonstrating the best separation performance under similar test conditions. Moreover, our membrane could maintain a stable separation capacity at C 3 H 6 feed fraction of 1%–99%, which has never been addressed in previous literature. The above stable and outstanding separation performance recommend our membrane a superb choice for reliable batch production of high-purity C 3 H 6 .
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
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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International Journal of Nanomedicine
·
2024
·
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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Food Bioscience
·
2025
·
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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Journal of Water Process Engineering
·
2024
·
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
·
2024
·
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
·
2024
·
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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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
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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ENVIRONMENTAL RESEARCH
·
2024
·
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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