APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Yitong Wang,Yanhua Tian,Jingde Li,Liping Zhao,Yanqin Yang
Mixed matrix membranes (MMMs) composed of polymers and metal-organic frameworks (MOFs) can effectively break the trade-off between selectivity and permeability of pure polymer membranes, thus holding great potential for the development of high-efficiency gas separation membranes. Nevertheless, structural mismatches between polymer matrix and MOF particles easily cause interfacial defects and filler aggregation, which severely hinder efficient gas separation. In this work, a novel interfacial bonding strategy is proposed. Specifically, an amidoxime-modified polymer of intrinsic microporosity (AOPIM-1) with similar structure to polymer matrix (PIM-1) is firstly used to modify and encapsulate the zeolitic imidazolate framework-8 (ZIF-8), generating a composite filler AO@ZIF. Within the resultant MMMs, due to the Zn-N coordination bonds and hydrogen bonds between ZIF-8/AOPIM-1 and PIM-1/AOPIM-1, respectively, low-defect interfaces are obtained. The optimized interfacial compatibility further achieves efficient CO 2 /N 2 separation performance. Particularly, when the filler loading is 2.5 wt%, the CO 2 /N 2 selectivity of the AO@ZIF-2.5/PIM-1 membrane increases by 72.8% and 46.0% compared with pristine PIM-1 and ZIF-2.5/PIM-1 membrane, exceeding the 2008 Robeson upper bound and approaching the 2019 Robeson upper bound. Moreover, the resultant membranes also possess outstanding mechanical properties, anti-plasticization capacity, and excellent anti-physical aging stability. This study provides a feasible strategy for interfacial design and performance optimization of high-performance MOF/polymer MMMs toward advanced gas separation.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Juanjuan Wang,Yang Cao,Shaoyi Li,Yunxiao Wen,Jian Yang
Carbon-based electrocatalysts exhibit excellent oxygen reduction reaction (ORR) activity. Their abundant porous structures and diverse active sites provide accessible mass transfer channels and high current densities during electrocatalysis. Herein, a series of polyhedral porous carbon materials integrated with N-doped carbon nanotubes (CNTs) were fabricated by pyrolyzing precursors under an Ar atmosphere. These precursors were obtained by selectively pre-etching ZIF-8, followed by immersion in Fe ions. The amount of etching agent and Fe during precursor preparation significantly influenced the morphologies and the abundance of CNTs. The optimized sample, denoted as FeN x /Fe@NC-20:6, displayed abundant CNTs intimately connected to the polyhedral porous carbon. It delivered a half-wave potential of 0.92 V ( vs . RHE) and a limiting current density of 5.2 cm −2 for ORR. Furthermore, Zn-air batteries assembled with the FeN x /Fe@NC-20:6 catalyst demonstrated outstanding discharge performance, with an open-circuit voltage of 1.522 V, a specific capacity of 803 mAh g −1 , and a peak power density of 197.4 cm −2 . Therefore, the pre‑etching strategy represents an effective route to design high‑performance, non‑precious‑metal ORR catalysts, thereby facilitating the development of sustainable energy devices. Download: Download high-res image (248KB) Download: Download full-size image Acid-etching of ZIF-8 is an interesting strategy for promoting the CNTs growth via the Fe ions injecting in the precursor. The obtained hybrid catalyst with polyhedral porous and CNTs exhibits excellent ORR performance.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Yufeng Da,Yong Liu,Yong Chen,Rui Han,Jianlong Wang
Recently, the activation of molecular oxygen (O 2 ) by graphite (Gr) supported aluminum (Al) composite for the in-situ generation of H 2 O 2 / OH gains increasing attention. However, the limited O 2 mass transfer and low catalytic activity of decomposition H 2 O 2 at neutral pH restrict its further application in the wastewater treatment. In this work, a novel N-rich graphite supported aluminum (Al-Gr-NPC) composite was fabricated by introducing the nitrogen-rich porous carbon (NPC) obtained from ZIF-8 derivative as precursor, and by a ball-milling and sintering process. The results showed that the NPC introduction not only improved the physiochemical property of Al-Gr, such as specific surface area, pore structure and hydrophobicity, facilitating the mass transfer of O 2 , but also made Al-Gr contain plentiful N species, serving as active sites for the two-electron ORR process and catalytic decomposition of H 2 O 2 . These excellent performances of Al-Gr-NPC favored the production and utilization of H 2 O 2 by the activation of O 2 at neutral pH and air aeration. The carbonization temperature of ZIF-8 determined the type of N species, surface area and the hydrophobicity of NPC. 1 O 2 was the main oxidant for tetracycline hydrochloride (TC) degradation. 100 % TC degradation and 60.57 % of TOC removal were achieved within 60 min at neutral pH, Al-Gr-NPC dosage of 0.5 g/L and initial TC concentration of 20 mg/L. The toxicity of the final products of TC degradation were much lower than TC by ECOSAR software analysis. Al-Gr-NPC could be used for the removal of antibiotic contaminants from wastewater.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Xiu-yan Zhang,Ting Wang,Li-guang Wu,Hai-Chang Guo
In order to improve the separation performance and anti-fouling property of polyvinylidene fluoride (PVDF) ultrafiltration membranes, PVDF mixed matrix membranes (MMMs) were obtained by mixing PVDF with Ag@ZIF-8 using a simple one-pot microemulsion strategy. First, both Ag and ZIF-8 were generated in one micelle of the microemulsion during the formation of composites. After in-situ polymerization of microemulsion， the latex containing Ag@ZIF-8 was blended with PVDF by phase-inversion method to construct the MMMs. The small-sized Ag particles were closely distributed on the surface of ZIF-8 after the formation of ZIF-8 in micelles. The subtle interaction forces between the two facilitated the distribution of the composite in the PVDF matrix. In addition, the hydrophilic component in the latex improves the pore structure , the permeation and anti-fouling performance of the PVDF matrix compared to neat PVDF and the MMM with ZIF-8 added. Mixed-matrix ultrafiltration membranes with 0.3 wt% of microemulsion containing Ag@ZIF-8 exhibited good permeation ( J w = 222 L m −2 h −1 ) and flux recovery rate ( FRR = 82%). The well-distributed Ag@ZIF-8 in PVDF polymeric matrix strengthened the dye retention of MMMs from high-salinity wastewater, due to the interaction between Ag@ZIF-8 and dye molecules. This mixed-matrix ultrafiltration membrane also showed optimum dye rejection (97.3%) and low salt rejection (0.2%). The MMMs combined with Ag@ZIF-8 in this work are promising for the removal of dye contaminants for high-salinity wastewater, so as to achieve the goal of advanced treatment for high-salinity wastewater.
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Lei Ling,Shu Cai,You Zuo,Tengfei Meng,Hao Tian,Xiaogang Bao,Guohua Xu
Recently, superhydrophobic coating modified magnesium alloys are extensively utilized for anti-corrosion, anti-fouling and anti-bioadhesion fields due to their unique surface characteristics. However, lack of antibacterial and osteogenic properties have restricted the development of medical magnesium alloys for clinical implantation. Here, a facile superhydrophobic wettability transformation strategy is proposed to impart medical magnesium alloys with outstanding corrosion resistance , protection against bacterial infection and promotion of osteogenesis process. The copper (Cu 2+ )-doped zeolitic imidazolate frameworks-8 (ZIF-8) coatings were synthesized upon the surface of HA-modified Mg alloy via solvothermal method and then followed hydrophobic treatment in a mixed ethanol solution of dodecyl mercaptan (DDM) and myristic acid (MA) to obtain superhydrophobic properties. This particular superhydrophobic coating can be irradiated by visible light to make ligand-to-metal charge transfer produce photoelectrons and be captured upon the Cu@ZIF-8 coating surfaces as paramagnetic Zn 2+ sites, and then generated reactive oxygen species which can scavenge off the reductive dodecyl mercaptan, thus converting to hydrophilic. This wettability transition allows for the regulation of implant surface properties according to the functional requirements of the implant at different clinical stages. Furthermore, the composite coatings modified Mg alloy after wettability transformation from superhydrophobic to hydrophilic can significantly kill pathogenic bacteria and promote osteoblast attaching behavior.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Yu Zhang,Hong Zheng,Pengyi Zhang,Qi Zuo,Baichao Zhang,Xueying Ren
The deep purification of trace heavy metals in drinking water is of great significance and has received considerable attention worldwide. 2,5-dimercapto-1,3,4-thiadiazole (DMTD) functionalized magnetic ZIF-8 adsorbent (Fe 3 O 4 @ZIF-8-DMTD) using a novel one-pot post coordination modulation method at room temperature could effectively adsorb trace heavy metals from drinking water through cooperating with the abundant functional groups and surface charges. The negative surface charges promoted the rapid accumulation of trace heavy metals on the surface of the adsorbent, meanwhile, the abundant thiol/nitrogen sites contributed to their adsorption, thus the adsorption rate and adsorption capacity of trace heavy metals were greatly improved. For trace Pb(II) (150 ppb), the effluent concentration could meet the World Health Organization (WHO) standard (≤10 ppb) within 10 s after adsorption by Fe 3 O 4 @ZIF-8-DMTD, and the cumulative adsorption capacity that met WHO standard was 12.11 mg/g. Fe 3 O 4 @ZIF-8-DMTD also showed high stability in a broad pH range and excellent adsorption performance in a wide low concentration range. The effluent concentration still could meet the WHO standard when the initial Pb(II) concentration was 11.70 ppm, and the corresponding adsorption capacity reached 35.00 mg/g. Moreover, the capture experiments for multiple heavy metals that coexisted in tap water showed that the effluent concentrations of Hg(II), Pb(II), Cu(II), Cd(II), and Cr(III) could be lower than the allowable limits in a few minutes. The adsorbent could also be easily recovered using magnets and regenerated by thiourea solution, which showed great application potential for the purification of trace heavy metals in drinking water.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Xia Zhou,Xiaoling Lin,Haiqiu Huang,Ping Li,Jiamin Wu,Xueqin Huang,Huaihong Cai,Hai Han,Junxia Zheng,Haibo Zhou
Visual, highly selective, and sensitive detection of sulfur dioxide (SO 2 ) and its derivatives (SO 3 2- ) in vitro/in vivo is of great significance in maintaining cell homeostasis. A new Au@Ag@ZIF-8 optical sensor with o-phenylenediamine (OPD) internal coding surface-enhanced Raman scattering (SERS) tags based on the free radical reaction was synthesized for multi-mode detection of sulfite . First, Co 2+ is oxidized to Co 3+ . Second, the oxidoreduction between SO 3 2- and Co 3+ produces SO 4 -• and Co 2+ to complete the cycle. The resulting SO 4 -• is further reacted with the chromogenic substrate OPD to form the polymer. Due to the UV–vis absorbance of OPD polymer being stronger than that of OPD, but the fluorescence intensity is lower, and their Raman peaks are obviously different, this sensor can be used for the detection of SO 3 2- through colorimetric, fluorescence, and Raman multi-mode. The main advantages are as follows: (1) high selectivity; (2) achieve fast, visual, and highly sensitive detection of SO 3 2- , and the low limit of detection (LOD) is 1 nM; (3) improve the reliability of detection and expands the detection range (1 nM-800 μM); (4) demonstrate the applicability in recognizing SO 3 2- in HeLa cells to provide accurate information on the dynamic distribution of sulfur in cells.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 34
·8216-8227
·
IF 7
Zhipeng Yuan,Jing Zhang,Xinfu Zhao,Sijia Liu,Shimo Yu,Xiaochan Liu,Xinen Zhang,Xibin Yi
Rapid and safe disinfection and exudate management are two major challenges in infected wound care. Therefore, in this work, we developed a novel wound dressing via encapsulating ZIF-8-derived carbon nanoparticles in a hydrophilic nanofiber sponge to address severe wound infection and heavy exudate problems. The dressing can effectively kill bacteria through chemo-photothermal synergistic therapy. Meanwhile, the hydrophilic nanofiber sponge can quickly absorb wound exudate around the wound and accelerate the evaporation rate of liquid through the photothermal effect and its own structure; therefore, it is possible to remove excess liquid and regulate its wetness. In this way, it prevents the problem of wound overhydration often caused by hydrophilic dressings. In our experiment, the dressing showed good antibacterial performance and biocompatibility in vitro and could effectively control wound infection, absorb wound exudate and promote skin wound healing in vivo. Its good therapeutic effect is not only due to effective infection control and wound exudate management, but also because the structure of nanofibers similar to an extracellular matrix provides basic physical support and structural signals conducive to skin tissue regeneration.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER COMPOSITES
·
2023
·
IF 5.2
Xiaoqian Li,Xiaohua Jia,Jin Yang,Yong Li,Hongliang Lin,Haojie Song
Existing research on interfacial interactions of recyclable carbon fiber reinforced poly(hexahydrotriazine) (PHT) composites has mainly focused on the study of reinforcing fibers, ignoring the wide range of applications of matrix in advanced friction materials. Herein, polyhedral ZIF-8 was grown in-situ on the GO surface (named as ZIF-8@GO) to improve the load-bearing capacity of GO nanosheets. The ZIF-8@GO with zinc ions and imidazole ions were embedded as interlaminar reinforcement into matrix to construct a non-covalent cation-π interaction with indole-based PHT (In-PHT) matrix, which significantly enhanced the toughness and tensile strength (reached 215.5 MPa) of composites. With the incorporation of armor-shaped ZIF-8@GO reinforcement, compared with the composite without ZIF-8@GO, the wear track width was significantly decreased by 50%. Moreover, the worn surface lubricated by this composite exhibited efficient self-healing property due to the introduction of the polyethylene wax (PEW), and the healed average friction coefficient showed slight changes. Extensive analyses verify that the ZIF-8@GO structure and cation-π interactions across multiscale interfaces can enhance both mechanical strength and wear resistance of recyclable carbon fiber reinforced In-PHT composites (In-PHT-CFRPs). Highlights ZIF-8@GO was embedded as interlayer reinforcement to improve wear resistance. Cation-π interaction across interface enhances interface carrying capacity. Due to strong cation-π bonding, IPEZGC exhibits outstanding tensile strength. PEW was embedded as healing agent to obtain self-healing property.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Yang Yu,Rong Zhang,Lurong Hao,Yanni Li,Baoling Wang,Dandan Ge
In this work, a new type of magnetic ZIF-8 based on ferrofluids (FFs) and supramolecular solvents (SUPRASs) was prepared and applied as an extraction phase in vortex-assisted liquid–liquid microextraction of cationic dyes (chrysoidin, auramine O and rhodamine B) in beverage and river water samples. The FFs comprised sodium dodecyl sulfate (SDS) - coupled titanium dioxide - coated MZIF-8 and hexafluorobutanol-geraniol SUPRAS (MZIF-8/SDS-TiO 2 @HFB-Ger). The prepared extraction phase exhibited high extraction recoveries of these cationic dyes owing to strong interaction mechanisms, including hydrogen-bonding, hydrophobic, π-π and electrostatic attractions, between the FFs and the analytes. The optimum extraction conditions of cationic dyes were as follows: Ger content was 4 %, HFB content was 6 %, MZIF-8/TiO 2 -SDS was 25 mg, vortex time was 3 min, solution pH was 6–8, salt concentration was 5 % (m/v), elution solvent was ethanol and elution solvent volume was 500 μL. Under the optimized conditions, cationic dyes were linear in 5–1000 ng mL −1 with determination coefficients higher than 0.9957. The limits of detection ranged from 1 to 1.5 ng mL −1 , and the limits of quantification were between 3.5 and 5 ng mL −1 . Finally, the developed method was applied to determine the target analytes in beverage and river water samples, achieving extraction recoveries ranging from 93.1 % to 104.3 %, with relative standard deviations between 1.1 % and 8.1 %. Compared with MZIF - 8, MZIF-8/SDS - TiO 2 @HFB - Ger exhibited higher extraction efficiency for cationic dyes. Therefore, the developed method has great potential in extracting various analytes from various food and water samples.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）