Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Di Wu,Yilin Wang,Zhifang Liu,Caiyu Ge,Jiejun Li,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Rifampicin (RFP) is an emerging environmental pollutant that exists in natural waters due to discharged from the medical and pharmaceutical industries, posing potential risks to aquatic life and human health. Developing highly sensitive detection techniques for RFP is essential for environmental monitoring and public health protection. In this work, Mn 2 O@Zn-NC was synthesized using in-situ growth and pyrolysis methods. Rod-like MnO 2 providing dispersed sites for the growth and crystallization of dodecahedral ZIF-8,with dodecahedral ZIF-8 tightly encapsulates MnO 2 . Additionally, the Zn-NC formed after high-temperature treatment effectively addresses the issue of poor conductivity in MnO 2 , which is conducive to the accurate display of RFP current signals. Using material of Mn 2 O@Zn-NC, a high-sensitivity electrochemical sensor was developed with a detection range of 0.040–100 µM and a limit of detection of 25 nM. This highly sensitive sensor can accurately detect RFP in environmental samples, with results comparable to those obtained using UV-Vis spectroscopy. This breakthrough electrochemical detector provides valuable opportunities for creating smart, efficient, and portable monitoring solutions.
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CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Huihui Li,Shunchang Wang,Jin Chen,Mengchu Sun,Hongjin Tang
Polysaccharide-protein-based composite films are promising for food packaging, but interfacial incompatibility between hydrophilic biopolymers and hydrophobic proteins limits their use. In this study, a new thymol-loaded zeolitic imidazolate framework-8/κ-carrageenan/Zein composite film was developed for blueberry preservation. The film exhibited excellent physical properties with a thickness of 0.052 ± 0.0001 mm, a high tensile strength of 40.631 ± 1.527 MPa, an elongation at break of 21.223 ± 1.018 %, and a reduced water vapor permeability of (0.764 ± 0.166) × 10 −8 kg·m·m −2 ·s −1 ·Pa −1 . The incorporation of thymol and ZIF-8 improved the film's microstructure and interfacial compatibility between κ-carrageenan and Zein. Thymol release was pH-dependent and sustained with a cumulative release of 91.959 ± 0.454 % over 36 h at pH 4.5. Biological testing revealed significant antibacterial properties with survival rates of 0.002 ± 0.002 % against Staphylococcus aureus and 5.973 ± 0.307 % against Escherichia coli , and antioxidant capacity with DPPH and ABTS radical scavenging rates of 75.60 ± 0.53 % and 61.49 ± 1.19 %, respectively. The film showed good biodegradability and extended blueberry shelf life by 9 days. This composite film offers enhanced mechanical properties, controlled release, and bioactivity, showing great potential as active food packaging for fruit preservation.
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ACS Applied Materials & Interfaces
·
2024
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IF 8.3
Yongmei Ge,Liqiu Hu,Jiayi Liu,Fenbo Ma,Jiarong Zhang,Yansong Wang,Bin Tang,Shuaishuai Cao
The repair of large bone defects poses a significant challenge in orthopedics. Polyetheretherketone (PEEK) is a promising bone substitute, while it suffers a lack of bioactivity. Although several studies have been performed to further improve the bioactivities of PEEK by various surface modifications, PEEK offering long-term, multifaceted biofunctionalities remains still desired. In this study, we introduced metal–organic frameworks (MOFs), specifically ZIF-8 loaded with celecoxib (ZIF-8(CEL)), onto the PEEK surface through dopamine adhesion. The resulting PEEK@ZIF-8(CEL) aims to achieve long-term stable release of Zn ions and CEL for enhanced bone integration. Material characterization and biological experiments confirmed the successful integration of ZIF-8(CEL) onto PEEK and its positive biomedical effects, including creating a positive bone immunological environment and promoting bone growth. This study demonstrates the potential of PEEK@ZIF-8(CEL) as a novel repair material for large bone defects, offering a promising alternative in orthopedic applications.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Luping Feng,Enjun Chen,Jianghong Wang,Xinfeng Li,Yujie Fan,Leyao Jin,Peisong Tang,Lixiang Zhang
A simulated sunlight-driven photoelectrochemical (PEC) sensor has been developed for quantitative analysis of hydrogen sulfide (H 2 S) with “signal-on” output by Hg 2+ -integrated ZnS nanocubes (Hg 2+ @ZnS NCs). Herein, hollow ZnS NCs were firstly prepared by the ZIF-8-derived soft-template method. Subsequently, Hg 2+ probing ions were doped into the porous structures of these ZnS NCs through an adsorption reaction, yielding Hg 2+ @ZnS NCs. It was observed that Hg 2+ @ZnS-based PEC sensor could exhibit slightly enhanced PEC responses over pristine ZnS, attributed to the adsorption of Hg 2+ on ZnS surface, which may modulate surface states/defects and band structures to suppress surface recombination. More importantly, after the addition of H 2 S, the in-situ growth of HgS@ZnS with a type-II heterojunction enables enhanced photocurrent response in developed sensor by promoting efficient spatial charge separation and transfer. A PEC sensing platform with exceptional sensitivity and selectivity has been established for H 2 S quantification, covering a linear range of 0.05–10 nM and a detection limit of 32 pM, which may serve as a guideline for the design of PEC sensors for real-world H 2 S analysis in complex matrices like environmental wastewater and industrial waste gas.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
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IF 8.3
Ketao Wang,Shijie Jiang,Ranjie Zeng,Long Zeng,Yuting Ou,Jieying Lv,Xiaohui Su,Bin Chi,Tiejun Wang,Dai Dang
Constructing self-supporting electrodes with ordered channels is critical to enhancing mass transport and ensuring structural integrity in practical hydrogen evolution reaction (HER) applications. Herein, we develop a binder-free self-supporting electrode using freestanding carbonized wood (CW) as a three-dimensional scaffold. ZIF-8 was utilized as a linker for in-situ growth to form CW@ZIF-8 materials. This composite was then impregnated with molybdate salts and subjected to a secondary carbonization process, resulting in the formation of electrically active Mo 2 C nanoparticles within the ordered channels. The resulting Mo 2 C/N–C/CW electrode exhibits excellent HER performance, which requires only 106.5 mV overpotential in alkaline and 130.9 mV in acidic media at 10 mA cm −2 . The enhanced performance is attributed to the hierarchical CW framework, which not only promotes uniform Mo 2 C dispersion but also facilitates electrolyte diffusion. This strategy offers a scalable route toward cost-effective, efficient, and durable self-supporting HER electrodes suitable for both acidic and alkaline environments.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
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IF 21.1
Peng Wang,Zijing Liu,Yanwei Xing,Bin Fan,Yulong He,Ting Gao,Wenlei Zhang,Yunfei Gao,Shuang Wang,Jinping Li
Electrocatalytic nitrogen reduction reaction (ENRR) is considered as a potential pathway for green synthesis of ammonia. However, the kinetic barriers of ENRR remain a tough challenge, which is imperative to design high effective electrocatalysts for accelerated activation of N N. Herein, the FeS/ZnS/ZIF-8-L with rich heterogeneous interfaces was successfully fabricated by governing the ordered lasso arrangement of Fe and Zn nodes in Fe-2MIM/ZIF-8-L precursor, where Fe and Zn were separately fixed in the confined space of ZIF-8-L and Fe-2MIM. Such intertwined Fe-2MIM/ZIF-8-L structure was beneficial to control the location and concentration of FeS and ZnS after sulfidation pyrolysis. The high-efficiency FeS/ZnS/ZIF-8-L exposed more catalytic active sites and possessed optimal electronic structure resulting in the lowered energy barrier of ENRR and the enhanced adsorption and activation of N 2 , which confirmed by experimental and theoretical characterization results. As a result, FeS/ZnS/ZIF-8-L displayed an optimal NH 3 yield rate of 89.52 μg h −1 mg −1 and Faradaic efficiency of 16.78 %, which surpassed most reported heterostructured ENRR catalysts. Our findings shed a new insight to govern the interfaces density of heterostructured electrocatalysts by predesigning the location of two metals in precursor, which can motivate an in-depth exploration to advanced catalysts for various electrocatalytic reactions.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
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IF 8.3
Xuhan Wang,Xiaoning Meng,Wei Gao
Hydrophobic ZIF-8 was grown on PdPt/WO 3 for room‑temperature H 2 detection under 90% RH. • ZPPW-2.0 sensor achieved ultrahigh response (15976.29) to 5000 ppm H 2 at 25℃ under 90% RH. • Dual sieving provided excellent selectivity against interfering gases. • Red‑light excitation enhanced sensitivity via oxygen‑vacancy activation. • Multi‑mechanism design ensured humidity‑tolerant and stable performance. This study presented the development of a room-temperature hydrogen (H 2 ) gas sensor, designated ZPPW-2.0, capable of operating reliably under high-humidity conditions. The sensor structure was constructed by growing hydrophobic zeolitic imidazolate framework (ZIF-8) on a PdPt-modified WO 3 sensing film. This configuration enabled a synergistic surface regulation mechanism involving molecular sieving, surface defect engineering and photoexcitation-enhanced surface reactivity. Under ambient operating conditions (25°C, 90% relative humidity), the sensor exhibited a remarkable response of 15976.29 to 5000 ppm H 2 , a response time of 8 s, excellent repeatability, long-term stability, and outstanding selectivity. Furthermore, illumination with 655–660 nm red light could enhance performance. The observed high performance was attributed to the synergistic enhancement by surface defect states, effective exposure of surface active sites, inhibition of surface water competition, and molecular sieving. This work highlighted the central role of surface reaction, and interfacial regulation in designing reliable room-temperature H 2 sensors for humid environments. Download: Download high-res image (274KB) Download: Download full-size image
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Biosensors-Basel
·
2022
·Vol. 12
·期 10
·830
·
IF 5.743
Juanjuan Huang,Yiyun Yao,Yanling Chen,Tianran Lin,Li Hou,Dianping Tang
Copper peroxide/zeolitic imidazolate framework/polydopamine nanoparticles (CP/ZIF-8/PDA)-based fluorescence-linked immunosorbent assay (FLISA) was designed for the sensitive and high-throughput determination of carcinoembryonic antigen (CEA) by self-supplied H2O2generation. Specifically, the CEA aptamer was modified on the surface of CP/ZIF-8/PDA to form an immunoprobe. The structures of CP and ZIF-8 could be broken under acidic conditions, and produced the Cu2+and H2O2due to the dissociation the CP. A subsequent Fenton-type reaction of Cu2+and H2O2generated hydroxyl radical (·OH). o-phenylenediamine (OPD) was oxidized by the ·OH to form 2, 3-diaminophenazine (DPA) with a significant fluorescence signal. CP/ZIF-8/PDA could be used as an efficient Fenton-type reactant to generate a large amount of ·OH to promote OPD oxidation. The sensitive detection of CEA could be realized. Under optimal conditions, the FLISA platform displayed a linear detection range from 0.01 to 20 ng mL−1with a detection limit of 7.6 pg mL−1for CEA. This strategy has great application potential for sensitive and high-throughput determination for other biomarkers in the field of biomedicine.Keywords:fluorescence-linked immunosorbent assay;Fenton-type reaction;carcinoembryonic antigen
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DALTON TRANSACTIONS
·
2016
·Vol. 46
·期 2
·554-563
·
IF 4.177
Erbin Shi,Huiming Lin,Qian Wang,Feng Zhang,Shaoxuan Shi,Tingting Zhang,Xin Li,Hao Niu,Fengyu Qu
A novel ZIF-Ni composite film has been successfully prepared by a facile method involving the in situ deposition of ZIF-8 on a nickel porous film which is fabricated by selectively etching copper from a dense Ni/Cu alloy film. The nanostructures of the resulting ZIF-Ni composite films are carefully examined by a combination of scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, Fourier transform infrared (FT-IR) spectroscopy, energy dispersive X-ray (EDX), and nitrogen adsorption–desorption. Cyclic voltammetric and amperometric studies show the enhanced electrocatalytic properties of the ZIF-Ni composite film electrodes toward hydrazine oxidation relative to the synergistic effect of ZIF-8 and porous Ni films. The application potential of the composite films as amperometric detectors is explored for the determination of hydrazine. A high sensitivity of 805.5 μA mM−1 for hydrazine detection with a low detection limit of 0.021 μM (S/N = 3) and a wide linear range from 2.5 μM to 28 mM are revealed for this new type of composite film as the detecting electrode. Moreover, the composite films exhibit excellent selectivity and remarkable stability for the oxidation of hydrazine. This can offer new opportunities for the fast and selective detection of hydrazine and provide a promising platform for sensor designs for hydrazine detection.
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JOURNAL OF HAZARDOUS MATERIALS
·
2020
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IF 9.038
Yang Wang,Lei Zhang
In this paper, we report a new type of 3D ZIF-8@NiAl-LDHs micro-flowers material consisting of sandwich-like structured 2D nanopetals (highly compact ZIF-8 film anchored on both sides of petals). ZIF-8 was successfully incorporated into NiAl-LDHs (ZIF-8@NiAl-LDHs) via seeding strategy directed growth of ZIFs on the surface of LDHs nanopetals. The coating of ZIF-8 significantly increased the adsorption ability to organic pollutants and inorganic cation. 3D ZIF-8@NiAl-LDHs with excellent enrichment and filtration properties has been exploited for the application in water purification, and exhibit superior high adsorption rate and adsorption efficiency of organic (nonsteroidal anti-inflammatory drugs: ketoprofen, flurbiprofen, indometacin and ibuprofe; anionic dyes: congo red, orange g; cationic dyes: methylene blue, rhodamine b) and inorganic cation (Cu 2+ , Pb 2+ ) residues due to their novel hierarchical and submicroscopic structures. Further, 3D ZIF-8@NiAl-LDHs as filter membrane to extraction four kind of trace anti-inflammatory drugs followed by direct quantification detection of targets with HPLC was demonstrated. The validated method was successfully applied for analysis of four anti-inflammatory drugs in environmental water and human urine samples. This work provided a feasible way to design and construct purification materials for wastewater treatment and contaminant detection.
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Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 24
·13013-13020
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IF 14.511
Zikuan Zhang,Haixia Zhang,Ying Hou,Peizhi Liu,Xiaodong Hao,Yanzhen Liu,Bingshe Xu,Junjie Guo
Perovskite oxide based electrocatalysts hold great promise as potential alternatives to platinum-based electrocatalysts for the oxygen reduction reaction (ORR), and thus have attracted tremendous research interest. Nevertheless, exploring high-performance ORR catalysts to improve pivotal reaction kinetics particularly in an acidic environment remains a great challenge. Herein, an N-doped porous nanocarbon framework supported perovskite CeFeO3 nanoparticle catalyst (Ce–Fe/NC) is fabricated from a predesigned Ce–Fe-doped ZIF-8 by a facile one-step route. The prepared catalyst displays a dodecahedral morphology with a large number of mesopores, which facilitate confining the aggregation of the CeFeO3 nanoparticles and promoting mass transport in the electrochemical process. Meanwhile, the introduced oxygen vacancies play a role in manipulating the local structure of the Fe active sites in CeFeO3, and boost their ORR performance. Impressively, the Ce–Fe/NC catalyst shows outstanding ORR half-wave potentials in pH universal electrolytes (0.913 V in alkaline and 0.791 V in acidic electrolytes), as well as good durability. A zinc–air battery utilizing the Ce–Fe/NC material as the air electrode offers an excellent specific capacity of 804 mA h g−1 and a long-term stability of 105 h in galvanostatic charge–discharge. This work provides a promise of non-precious-metal electrocatalysts with good prospects for realistic applications in zinc–air batteries and fuel cells.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Kui Zhang,Ziqing Guo,Kaiwen Wang,Yuxuan Zhu,Juan Yang,Lijin Huang,Yuanyuan Zhang,Nianjun Yang
The development of highly selective enzyme-free electrochemical sensors remains challenging, particularly in complex biological environments containing multiple electroactive interferents. To address this issue, we present a hierarchical sensing interface by innovatively growing a zeolitic imidazolate framework-8 (ZIF-8) film on three-dimensional AuPt nanoalloys. This design capitalizes on the molecular sieving effect of ZIF-8, which allows selective permeation of H 2 O 2 to the underlying catalytic AuPt surface while effectively blocking larger interferents such as ascorbic acid, uric acid, and dopamine. The resulting sensor exhibits exceptional selectivity, enabling accurate detection of H 2 O 2 even in the presence of interferents at concentrations 20-fold higher. Moreover, through the controllable growth of the ZIF-8 film and the high catalytic activity of the AuPt nanoalloy, the optimized sensor also demonstrates high sensitivity, a wide linear range, and a low detection limit. It was also successfully applied to in situ tracking of H 2 O 2 release from live cervical and breast cancer cells. This work provides a novel strategy for constructing metal-organic framework-based heterostructures for highly selective sensing, paving the way for reliable H 2 O 2 monitoring in biomedical applications.
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