APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Yuewen Chen,Tao Zheng,Hai Liu,Weidong Xie,Jiali Huang,Yimin Wang,Xiya Zhang,Zhen Yuan,Zhile Xiong
The electrocatalytic reduction of CO 2 to CO represents an important approach for carbon resource utilization. However, most existing catalysts still suffer from low activity and poor selectivity. In this work, a novel “domain-confined interface” synergistic catalytic system was constructed by integrating ionic liquid [BMIM][BF 4 ] with zeolitic imidazolate framework-8 (ZIF-8) to enhance the CO 2 reduction reaction (CO 2 RR) performance. The high specific surface area and microporous structure of ZIF-8 provide an ideal platform for CO 2 adsorption and activation, while [BMIM][BF 4 ] improves the local microenvironment of the catalytic interface, thereby boosting the catalytic activity. Experimental results indicate that the incorporation of the ionic liquid significantly enhances the CO 2 RR performance of ZIF-8 at low potentials. The Faradaic efficiency for CO (FE CO ) increases from 38.98 % to 75.25 % at −0.8 V versus the reversible hydrogen electrode (RHE). Moreover, at the optimal potential of −1.2 V (vs. RHE), FE CO reaches 96 % and remains stable during an 8-hour durability test, outperforming most reported ZIF-8-based catalysts. This work may provide useful insights for the design of efficient CO 2 RR electrocatalysts.
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Journal of Water Process Engineering
·
2024
·
IF 6.3
Shaorong An,Lina Wang,Qiang Jin
The Fe-N-C catalysts featuring abundant FeNx sites activating peroxymonosulfate (PMS) have been considered an attractive approach to water treatment and purification. It was reported that the coordination numbers of FeNx could be precisely controlled by varying the pyrolysis temperature, thereby affecting the catalytic activity . However, almost all Fe-N-C catalysts were prepared through energy-consuming high-temperature pyrolysis strategies, the activation performance and mechanism under low-temperature pyrolysis conditions are still unclear. In this work, three single-atom Fe catalysts (Fe SA -NC-300/500/1000) based on ZIF-8 were synthesized at different pyrolysis temperatures. Results showed that the degradation efficiency of sulfamethoxazole (SMX) in the Fe SA -NC-500/PMS and Fe SA -NC-1000/PMS systems could reach 100 % within 30 min, while only 91.9 % in the Fe SA -NC-300/PMS system. Combined with the turnover frequency (TOF) of the catalysts, it was found that the catalytic activity of Fe SA -NC-500 prepared by low-temperature pyrolysis was close to that of Fe SA -NC-1000, which was superior to many reported Fenton-like catalysts. Mechanism analysis manifested that both radical (·OH, SO 4 − ·, and ·O 2 − ) and nonradical ( 1 O 2 , high-valent Fe-oxo species, and electron transfer) pathways coexisted in the Fe SA -NC/PMS systems. Impressively, the larger production intensity of reactive species occurred in Fe SA -NC-500/PMS and Fe SA -NC-1000/PMS systems. The difference between these Fe SA -NC catalysts in actual printing and dyeing wastewater treatment offered some guidance for wider environmental applications. This work also provided a direction on the design and understanding of green and energy-saving Fe-N-C catalysts.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Mimi Sun,Jiahui He,Wanting Xiang,Wei Zou,Wenfei Song,Yating Xi,Jun Yan,Meimei Zhou,Pingping Luo
The design and construction of diverse heterojunction architectures have emerged as an effective strategy for enhancing the photocatalytic performance of semiconductors. In this study, ZIF-8/TiO 2 composite nanofibers were successfully fabricated by combining electrospinning technology with a facile in-situ solvothermal method, followed by ZIF-8 sulfurization to form ZnS/TiO 2 nanofiber heterostructures. Comprehensive characterization confirmed that ZIF-8 on the surface of TiO 2 nanofibers was completely converted into ZnS, establishing a robust and intimate interface with TiO 2 . The resulting ZnS/TiO 2 heterojunction exhibited remarkable photocatalytic reduction activity for Cr(VI), achieving 100% removal efficiency within 20 min under visible light irradiation. The photocatalytic reaction rate constant of the ZnS@TiO 2 nanofibers was approximately 10 and 319.5 times higher than those of pristine ZnS and TiO 2 nanofibers, respectively. This enhanced photocatalytic performance is attributed to the formation of the heterojunction, which effectively narrows the bandgap of the composite, optimizes photogenerated charge transfer pathways and significantly improves electron-hole pairs separation. Furthermore, mechanistic studies identified photogenerated electrons (e − ) and superoxide radicals ( O 2 − ) as the dominant active species involved in the photocatalytic reduction process. This work provides both fundamental understanding and practical methodology for developing high-performance TiO 2 -based photocatalytic systems, highlighting their potential for advanced water purification technologies.
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Journal of Water Process Engineering
·
2025
·
IF 6.7
Hao Fang,Lu Yang,Jie Ni,Shanshan Feng,Wenhao Jia,Na Li,Xiaoyi Ma,Zhengwei Zhou,Yao Zhang,Sheng Feng
This study developed an innovative adsorbent—cobalt ferrocyanide/ZIF-67/aged garbage humus soil aerogel (PBA/ZIF-67/AARH aerogel)—specifically designed for the effective removal of cesium ions (Cs) from radioactive wastewater. The aerogel exhibited a maximum adsorption capacity of up to 51.92 mg/g, maintaining excellent Cs adsorption performance even in complex aquatic environments that contain other ions and dissolved organic matter (DOM). The experimental results showed that the adsorption effect of PBA/ZIF-67/AARH aerogel was the best when the dosage of PBA/ZIF-67/AARH aerogel was 0.01 g and pH value was 5. The adsorption capacity was 29.75 ± 0.5 mg/g. At the same time, PBA/ZIF-67/AARH aerogel has good regeneration stability. After five sorption-desorption cycles, the adsorption capacity is 20.1 ± 0.3 mg/g, and the Cs removal rate remains at 84.5 ± 0.5%. The PBA/ZIF-67/AARH aerogel also has a large specific surface area, reaching 30.7950 m 2 /g. Experimental analyses indicated that the Cs removal process aligns with both the Langmuir adsorption model and pseudo-second-order kinetics, revealing key mechanisms for adsorption efficiency, including ion exchange, functional group complexation, and the synergistic effects of cross-linking. This research provides a novel solution for the efficient removal of Cs, establishing a solid theoretical and practical foundation for future applications in pollution water treatment technologies. It holds significant potential for environmental protection and profound implications for human health.
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FOOD CHEMISTRY
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2025
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IF 9.8
Ying Yang,Wenqi Zhang,Lu Zhang,Ziyan Shi,Dexiang Wei,Weiwei Xia,Xiaoguang Xu
Ochratoxin A (OTA) is a highly toxic and bioaccumulative mycotoxin found in grains, threatening food safety. Surface-enhanced Raman spectroscopy (SERS) combined with immunochromatography enables rapid and sensitive detection of OTA. This study aimed to develop a novel core-shell-satellite SERS probe (Au@Ag@(Cu-ZIF-8)-AuNPs) for OTA detection. The structure comprised an Au@Ag nanoparticle core, coated with Cu-doped ZIF-8 and gold nanosatellites. This design generated dense electromagnetic “hot spots” through plasmonic coupling between the core and satellites. Simultaneously, Cu doping reduced the bandgap of ZIF-8, thus enhancing charge transfer efficiency for chemical signal amplification. The dual electromagnetic-chemical enhancement achieved a detection range of 0.1 fg/mL–1.0 μg/mL and an ultralow detection limit of 0.057 fg/mL, thereby surpassing the detection limits of conventional methods. This innovative probe, with its high sensitivity and wide dynamic range, offers a powerful platform for mycotoxin monitoring, hence advancing SERS-based rapid detection technologies crucial for food safety.
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Huanjing Chen,Wanqiao Bai,Hongmei Chai,Loujun Gao
To achieve the rapid and sensitive detection of trace methyl parathion (MP) in river water and edible agricultural products, the catalytic composite material zirconium hydroxide (Zr(OH)4)/zeolite imidazolate framework-90 (ZIF-90) was prepared by a one-step synthesis method. The composite was further incorporated with a conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hydrogel to prepare a modified electrode. Then, an electrochemical sensing method based on the PEDOT:PSS/Zr(OH)4/ZIF-90 composite was successfully established for the analysis and detection of MP. The component ratio of the composite material, modification amount and pH value of the detection substrate were optimized. The electrochemical properties of the composite modified electrode were evaluated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques, and the results confirmed that it had good electrochemical properties. The electrochemical response of the established sensing method to MP showed a good linear relationship in the concentration range of 1–250 µmol L−1, and its detection limit and sensitivity reached 0.74 µmol L−1 and 0.09 µA µmol−1 L−1, respectively. The interference of common coexisting ions on the detection performance of the PEDOT:PSS/Zr(OH)4/ZIF-90 modified electrode was further investigated, and it was applied for the quantitative analysis of MP in actual river water and apple samples. The electrochemical sensing method developed in this work provides a new way for the efficient detection of MP residues in environmental water and agricultural products.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2025
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IF 4.9
Simin Li,Sen Mu,Ziran Chang,Fengbing Tang,Jingbo Mu,Zhennan Shi
Tetracycline hydrochloride (TCH), a widespread aquatic antibiotic contaminant, threatens environmental sustainability and human health by fostering antibiotic resistance. Here, a hierarchical quartz sand@polydopamine/Co-Ni-ZIF (QS@PDA/CoNi-ZIF) composite catalyst is developed to stimulate peroxymonosulfate (PMS) for TCH removal. In this design, the Co-Ni-ZIF component acts as a highly active PMS activator, with polydopamine (PDA) as an adhesive interface to stably immobilize ZIFs on QS. Using QS as a catalyst substrate exemplifies the concept of “functional redevelopment of traditional materials.” Component synergies enable rapid electron transfer and accelerate Co 2+ /Co 3+ and Ni 2+ /Ni 3+ redox cycling, enhancing reactive oxygen species (ROS) generation. The catalyst achieves dual radical (•SO 4 − , •O 2 − ) and non-radical ( 1 O 2 ) degradation pathways, removing 96.0% TCH within 40 min under optimized conditions. Intermediate analysis reveals three plausible degradation pathways. The composite exhibits broad environmental adaptability (>90% efficiency at pH 3.0-11.0 and in complex water matrices with competing ions) and retains >82% efficiency over four cycles, confirming robust stability and reusability. This work demonstrates QS@PDA/CoNi-ZIF as a scalable solution for treating refractory organic wastewater with high contaminant loads.
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MICROCHIMICA ACTA
·
2025
·Vol. 193
·期 1
·43
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IF 5.3
Chen Guo-Ying,Luo Mao-Ling,Chai Tong-Qing,Dai Jing-Jing,Yang Feng-Qing
The composite materials of Mn oxide nanowires and ZIF-8 (Mn x O y NWs@ZIF-8-NF and ZIF-8@Mn x O y NWs-TH) with controllable sizes and morphologies (nanoflower and Tanghulu-like) were successfully synthesized using different solvents (water and dimethylformamide (DMF) under mild reaction conditions. The systematic investigation was conducted to evaluate the effects of key synthesis parameters, including precursor concentration, metal-to-ligand ratio, temperature, and time, on the microstructure and crystalline morphology of the materials. Furthermore, the synthesis mechanisms of the materials in different solvents (water and DMF) were explored, revealing the influence of solvent molecules on their crystal growth processes. The prepared materials serve as “tandem enzymes” (a single nanozyme composite can perform multiple or sequential catalytic reactions), possessing multiple enzyme-like activities (hydrolase- and oxidase (OXD)-like activities). Kinetic studies indicate that the Mn x O y NWs@ZIF-8-NF composite exhibits excellent hydrolase-like catalytic activity, characterized by the high substrate affinity and maximum reaction rate ( K m : 0.01493 mM, V max : 161.42 × 10 –8 M/s). Moreover, Mn x O y NWs@ZIF-8-NF exhibits high specificity and interference-resistance in fluorescent detection of glucose oxidase (GOX) based on its hydrolase and OXD-like activities. In short, this work investigates the role of solvents as one aspect of tailoring material properties, contributing to the development of advanced functional materials and offering a methodological reference for GOX detection. Graphical
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ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Yan Chen,Yufan Liu,Huizhen Jin,Xinyue Wang,Guowen Wang,Hongchao Ma,Vadivel Subramaniam,Krishnamoorthy Ramachandran,Xinghui Liu
Antibiotic drugs are biotoxic and difficult to degrade, causing irreversible effects on aquatic environment and human health. The photoelectrocatalytic (PEC) process is regarded as a promising strategy for simultaneously addressing environmental pollution and the energy crisis. Herein, a plum tree-type composite semiconductor photoanode MnOx@Co/NC-x with core-shell heterostructures was constructed to evaluate the PEC activity for sulfamethoxazole (SMX). The synergistic effects of Co nanoparticles, a high content of graphitic N, an open framework, and interfacial structures played a decisive role in improving the PEC activity of the MnOx@Co/NC-x system. The engineered micro-nano structure significantly improved the specific surface area and conductivity of electrode materials, and promoted the diffusion of electrolyte. Among them, MnOx@Co/NC-500 photoanode exhibited the best performance (reached 98.92% in 50 min), cyclic stability and repeatability. The results showed that it was feasible to construct a high-performance heterostructural interface for pollutant treatment based on micro-nano structure regulation and valence band matching.
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高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 33
·期 6
·065409
·
IF 3.874
Wenwen Zhang,Ximeng Zhao,Weixing Niu,Hang Yu,Tongtao Wan,Guihua Liu,Dongsheng Zhang,Yanji Wang
The slow kinetic of oxygen reduction reaction (ORR) hampers the practical application of energy conversion devices, such as fuel cells, metal-air batteries. Here, an efficient ORR electrocatalyst consists of Co, Ni co-decorated nitrogen-doped double shell hollow carbon cage (Ni–Co@NHC) was fabricated by pyrolyzing Ni-doped polydopamine wrapped ZIF-67. During the preparation, polydopamine served as a protective layer can effectively prevent the aggregation of Co and Ni nanoparticles during the pyrolysis process, and at the same time forming a carbon layer to grow a double layer carbon cage. This unique hollow structure endows the catalyst with a high specific surface area as well as more exposed active sites. Also benefited from the synergistic effect between Ni and Co nanoparticles, the Ni–Co@NHC catalyst leads to an outstanding ORR performance of half-wave potential (E1/2, 0.862 V), outperforms that of commercial Pt/C catalyst. Additionally, when Ni–Co@NHC was used in the cathode for the zinc-air battery, the cell exhibits high power density (108 mW cm−2) and high specific capacity (806 mAh g−1) at 20 mA cm−2 outperforming Pt/C. This work offers a promising design strategy for the development of high-performance ORR electrocatalysts.
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DYES AND PIGMENTS
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2022
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IF 5.122
Zishuo Yi,Weiling Huang,Yan Xu
Dual-emitting ratiometric optical thermometers with the advantages of excellent self-calibration and high-sensitivity have become a research hot spot. Herein, a dual-emissive 4-methylumbelliferone encapsulated ZIF-8 (ZIF-8⊃4-MU) modified Zn 2 GeO 4 :Mn 2+ nanocomposite was simply prepared by adding Zn 2 GeO 4 :Mn 2+ nanorods into a methanol solution containing 4-methylumbelliferone (4-MU), zinc (II) nitrate hexahydrate, and 2-methylimidazole. Accompanying with the self-assembly of ZIF-8⊃4-MU, the binding affinity of Zn 2+ ions to the surface of Zn 2 GeO 4 :Mn 2+ nanorods enables the formation of ZIF-8⊃4-MU@Zn 2 GeO 4 :Mn 2+ nanocomposite. The photoluminescence violet-blue (420 nm) and green emissions (531 nm) of the nanocomposite can be ascribed to the two independent luminescent centers of 4-MU dyes confined in ZIF-8 and the characteristic transition of 4 T 1 - 6 A 1 for Mn 2+ ions doped in Zn 2 GeO 4 , respectively. The fluorescent intensity ratios (FIRs) of 4-MU to Mn 2+ (I 420 nm /I 531 nm ) showed excellent self-calibrating temperature monitoring functions with a maximum relative sensitivity (S r ) of 1.82%· o C −1 and stable reusability in the temperature range of 20–100 °C. Also, the ZIF-8⊃4-MU@Zn 2 GeO 4 :Mn 2+ hybridized polyvinyl alcohol (PVA) transparent film showed a similar multi-emitting behavior, as well as good processability and tensile properties . Benefiting from the excitation-dependent emitting property of ZIF-8⊃4-MU@Zn 2 GeO 4 :Mn 2+ , a multiple optical encryption of digital information was successfully realized based on a two-dimensional code, achieving an enhanced security level for preventing counterfeiting. This proof-of-concept study offers a feasible assembled way in fabricating multi-mode luminescent nanocomposites for ratiometric temperature sensing and information encryption .
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PROGRESS IN ORGANIC COATINGS
·
2020
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IF 4.469
Liangliang Xiong,Mei Yu,Yingquan Li,Xiangxin Kong,Songmei Li,Jianhua Liu
Salicylaldehyde@ZIF-8/graphene oxide (SZG) nanosheets were fabricated by anchoring salicylaldehyde@ZIF-8 nanoparticles on graphene oxide. SZG nanosheets were modified by amino silane 3-aminopropyltriethoxysilane (f-SZG) to improve the compatibility with epoxy coating. Sedimentation test showed the excellent dispersion stability of f-SZG in resin epoxy even after standing for 480 h. The cross-sectional microstructure of coatings implied the strong f-SZG/coating matrix interface by transforming the cleavage fracture to the ductile. Additionally, the stimuli-responsive release to H + and Al 3+ ions of f-SZG is maintained after the silanization. Compared with other samples, f-SZG0.5 epoxy coatings show the optimal long-term corrosion protection property with the lowest reduction rate of |Z| 0.01Hz (13.6%) after 480 h immersion and the intact surface after 27d salt spray test due to the stronger interfaces of f-SZG/epoxy matrix and coating/substrate, the proper content (0.5 wt.%) and the enhanced cross-linked density of coating.
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