JOURNAL OF HAZARDOUS MATERIALS
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2020
·
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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高影响因子
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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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Xinhui Liu,Chen Yan,Yilin Wang,Peng Zhang,Siyan Yan,Hanbin Wang,Jianguo Zhuang,Yitao Zhao,Yuchen Wang,Yijun Yu,Qichao Zhao,Xuedong Zhu,Fan Yang
A series of Zn loaded ZSM-5 (Zn/ZSM-5) zeolites were prepared utilizing either Zn(NO 3 ) 2 or Zn-based MOFs (ZIF-61, ZIF-8 and ZIF-14) as Zn sources to explore their effects on the catalysts’ physiochemical properties through characterizations and simulations. Results revealed that hierarchical structures containing meso - to macro- pores of 10 ∼ 80 nm aside from the intrinsic micropores were constructed profiting from the use of Zn-based MOFs. On the other side, lager proportions of medium acid and Lewis acid sites were generated by more Zn(OH) + , whose content was proven to be inextricably linked to the binding energy between Zn and ligand as well as local charge valence state of Zn. Benefitting from hierarchical structures and balanced acidities, Zn/Z5(ZIF-14) employing ZIF-14 as Zn source demonstrated higher aromatic selectivity and longer catalyst lifetime (50.9 % and 26 h) than the microporous counterpart synthesized from zinc nitrate hexahydrate (42.1 % and 20 h) in methanol to aromatics (MTA) reaction.
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高影响因子
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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高影响因子
FUEL
·
2025
·
IF 7.5
Dongju Fu,Zhao Hu,Jinghui Xun,Xiao Yu,LuYang Wang,Shaozhong Zeng,Fengjiao Li
Highly ordered Pt alloy structure is an effective method to improve the catalytic activity and stability of cathodic oxygen reduction reaction (ORR) in acidic media, which is of great significance for the large-scale commercial application of proton exchange membrane fuel cells (PEMFCs). Herein, a highly efficient and durable catalyst composed of structurally ordered PtCo alloys with nitrogen-doped carbon (NC) shells is designed by improving the impregnation reduction method, using an intermediate self-sacrificial template strategy. Under the optimal preparation conditions of 20 wt% doped Ketjen black and a calcination temperature of 850 °C, the ordered PtCo alloy-based catalyst (denoted as L 1 0 -PtCo/ZNC) is obtained with an average nanoalloy size of about 3.9 nm and uniformly loaded on the N-doped carbon support via pyrolysis of cobalt-based zeolite imidazolate framework (ZIF-67) and carbon black. The half-wave potential ( E 1/2 ) of L 1 0 -PtCo/ZNC reaches 0.927 V vs. RHE, outperforming most of the reported catalysts and the benchmark commercial Pt/C catalyst. Moreover, the mass activity (MA, 1.06 A mg Pt -1 ) and specific activity (SA, 1.03 mA cm -2 Pt ) of L 1 0 -PtCo/ZNC are 7.6 and 4.7 times of those of Pt/C, respectively. The MA and SA values of L 1 0 -PtCo/ZNC after 10,000 cycles are 35 and 23 times of those of Pt/C catalysts, respectively, indicative of the excellent durability of L 1 0 -PtCo/ZNC. This method provides an effective strategy in preparing highly active and stable ordered PtCo alloy-based hybrid catalysts for acid ORR.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Fuwei Liang,Yang Xu,Shun Chen,Yalin Zhu,Yaxun Huang,Bin Fei,Wenwen Guo
The facile construction of a cotton fabric with excellent flame-retardant and water-proof abilities is of great interest for multitask requirements. Herein, a nonfluorine, highly efficient, and cost-effective multifunctional cotton fabric was fabricated via sequentially depositing a novel multielement-containing flame-retardant phosphorylated octa-aminopropyl POSS (PPA-POSS) and a fluorine-free superhydrophobic coating of zeolitic imidazolate framework-67@poly(dimethylsiloxane) (ZIF-67@PDMS). Influences of the PPA-POSS concentration and ZIF-67@PDMS formula on the fire retardancy and water repellency of treated cotton were systematically investigated. The optimized flame-retardant sample CTF3 with 6.2 wt % PPA-POSS exhibited a high limiting oxygen index (LOI) of 34% and self-extinguishing ability. CTF3 was further modified with a properly formulated superhydrophobic ZIF-67@PDMS coating. CTF3-PHB2 displayed enhanced thermal stability, flame retardancy, and outstanding superhydrophobicity. Thermogravimetric analysis (TGA) results demonstrated that CTF3-PHB2 presented a high char residue of 35.9%, which was 220.5% higher than that of the control cotton (11.2%). More importantly, the heat release rate (HRR), total heat release (THR), and average effective heat of combustion (av-EHC) values of CTF3-PHB2 were significantly reduced by 51.4, 56.2, and 68.4%, respectively, compared with those of a pure cotton fabric. Moreover, CTF3-PHB2 showed superhydrophobicity (WCA > 159.3°) and good mechanical abrasion resistance. In addition, CTF3-PHB2 also showed protective abilities such as antifouling, self-cleaning, and water/oil separation performances even for strong acid/alkali mixtures. Thereby, it is believed that the PPA-POSS@ZIF-67@PDMS coating is promising for application in multifunctional textile materials.
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高影响因子
MOLECULES
·
2022
·Vol. 27
·期 21
·7488
·
IF 4.927
Wenjie Zhang,Jianlin Long,Haijun Wang,Jinle Lan,Yunhua Yu,Xiaoping Yang
Polymer electrolytes (PEs) with high flexibility, low cost, and excellent interface compatibility have been considered as an ideal substitute for traditional liquid electrolytes for high safety lithium metal batteries (LMBs). Nevertheless, the mechanical strength of PEs is generally poor to prevent the growth of lithium dendrites during the charge/discharge process, which seriously restricts their wide practical applications. Herein, a mechanical robust ZIF-8/epoxy composite electrolyte with unique pore structure was prepared, which effectively inhibited the growth of lithium dendrites. Meanwhile, the in situ growth of ZIF-8 in porous epoxy matrix can promote the uniform flux and fast transport of lithium ions. Ultimately, the optimal electrolyte shows high ionic conductivity (2.2 × 10−3S cm−1), wide electrochemical window (5 V), and a large Li+transference number (0.70) at room temperature. The Li||NCM811 cell using the optimal electrolyte exhibits high capacity and excellent cycling performance (83.2% capacity retention with 172.1 mA h g−1capacity retained after 200 cycles at 0.2 C). These results indicate that the ZIF-8/epoxy composite electrolyte is of great promise for the application in LMBs.
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高影响因子
ChemCatChem
·
2017
·Vol. 10
·期 4
·796-803
·
IF 4.803
Shi Feng,Xingyue Li,Jia Huo,Qiling Li,Chao Xie,Tingting Liu,Zhigang Liu,Zhenjun Wu,Shuangyin Wang
Graphical Porous carbon electrode : CoS 2 @N/S-codoped porous carbon is prepared through an electrodeposition–ZIF conversion–sulfuration strategy. The loading of active sites can be controlled easily by varying the electrodeposition time. The resulting material can be employed directly as a working electrode for the hydrogen evolution reaction and shows an excellent catalytic activity and stability. A convenient, controllable method to fabricate an electrode is necessary to achieve the practical application of a hydrogen evolution reaction (HER) catalyst. In this work, an electrodeposition–ZIF conversion–sulfuration strategy is developed to produce a CoS 2 @N/S-codoped porous carbon (CoS 2 @NSC/CFP) to drive the HER efficiently. CoS 2 @NSC/CFP was prepared by the electrodeposition of Co(OH) 2 on a carbon fiber paper followed by conversion into ZIF-67 and subsequent sulfuration with sulfur. The loading of electroactive components can be controlled easily in the range of 0.7–10.0 mg cm −2 by varying electrodeposition time from 5 min to 2 h. The resulting material can be employed directly as a working electrode for the HER and it shows an excellent catalytic activity and stability with an overpotential of 95 mV at 10 mA cm −2 and 158 mV to reach 100 mA cm −2 in an acidic medium. The high efficiency is related intimately to the high dispersion of ultra-small CoS 2 nanoparticles, heteroatom-codoping, and the 3 D porous network configuration of the carbon fiber paper.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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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.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123953
·
IF 7.5
Suqing Zhu,Qunxian Yuan,Donglan Ning,Jinyue Wei,Wenhan Sun,Xinpeng Wang
The safe interception and permanent stabilization of radioactive iodine released during nuclear fuel processing are critical for ecological security and public health. However, traditional adsorbents for capturing and storing iodine vapor are still plagued with unsatisfactory uptake capacity, poor structural robustness. Herein, a unique core-satellite ZIF-67-on-MIL-167 (MOF-on-MOF) composite is fabricated through a controllable heterogeneous nucleation and growth route, which was designed for the efficient capture of radioactive iodine. Experimental data shown that delivers a maximum iodine vapor uptake of 5.600 g/g under dry atmosphere, representing a 2.03-fold and 1.42-fold increase compared to pure ZIF-67 and MIL-167, respectively. It is important to note that the iodine adsorption capacity of ZIF-67-on-MIL-167 is rarely influenced by the humid environment in a relative humidity of 18%. Furthermore, ZIF-67-on-MIL-167 exhibited excellent chemical and thermal stability, maintaining a stable framework structure at temperatures as high as 283 °C, and the iodine-loaded ZIF-67-on-MIL-167 exhibited an exceptionally high radioiodine outstanding iodine retention efficiency of 94.25% after being exposed to ambient conditions for 7 days. The composite material exhibited a high degree of synergy between its N-rich imidazole structure, abundant Ti−oxo clusters, and uncoordinated carboxylic (C O) functional groups. This synergy resulted in the provision of numerous active sites and the facilitation of charge transfer, thereby enabling the efficient capture of radioactive iodine. The adsorbent developed in this work is both reliable and effective, showing promise for practical application in radioactive iodine capture.
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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.
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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.
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高影响因子
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