CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Zhiwen Lei,Jinlai Shen,Jun Wang,Qi Qiu,Guangzhao Zhang,Shang-Sen Chi,Hongli Xu,Shuai Li,Weide Zhang,Yusheng Zhao,Yonghong Deng,Chaoyang Wang
The stable structure, high porosity and surface functionality endow metal organic frameworks (MOFs) nanoparticles as excellent nanofillers for high-performance poly (ethyleneoxide)-based solid polymer electrolytes (PEO SPEs). However, the agglomeration of MOFs severely limits their potential applications. Herein, a novel zeolitic imidazolate framework-90 nanofiller grafted with imidazole ionic liquid containing siloxane groups (ZIF-90-g-IL) is prepared by dehydration condensation reaction, which enables the uniform distribution of the nanofiller in PEO SPEs. The resulting composite PEO SPE with ZIF-90-g-IL nanofillers delivers higher ionic conductivity of 1.17 × 10 -4 S/cm at 30 °C and lithium ion transference number of 0.44, wider electrochemical stability window of 4.8 V, and stronger ability to inhibit lithium dendrite growth than the PEO SPE with unmodified ZIF-90. The strong interaction of ZIF-90-g-IL with PEO is caused by the chelation of quaternary ammonium cations of ionic liquid groups on the ZIF-90-g-IL surface with oxygen containing a lone pair of electrons of PEO, resulting in a uniform distribution of the nanofillers in PEO. The LFP||Li half cells with the PEO/ZIF-90-g-IL SPE exhibit good cycling performance with 71% capacity retention (101 mAh g −1 ) after 500 cycles at 2C under 60 °C, and show excellent cycling performance with 97.4% capacity retention (148 mAh g −1 ) after 30 cycles at 0.1C under 30 °C. The composite SPE is also used for high-voltage NCM811||Li half cells. The capacity retention is 63% (99 mAh g −1 ) after 100 cycles at 0.1C under 60 °C. The results imply ZIF-90-g-IL as effective nanofillers for SPEs showing a great potential application in all solid-state lithium metal batteries.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2022
·Vol. 415
·期 5
·855-865
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IF 4.478
Lai Haohong,Niu Yuanyuan,Ming Pingtao,Wang Jinhao,Wang Shumei,Xu Yan,Zhai Haiyun
In this paper, a novel electrochemical sensor was constructed for the detection of purine bases. Ultrafine carbide nanocrystals confined within porous nitrogen-doped carbon dodecahedrons (PNCD) were synthesized by adding molybdate to ZIF-8 followed by annealing. With MoC-based PNCDs (MC-PNCDs) as the carrier, gold nanoparticles (AuNPs) were deposited on the electrode surface via potentiostatic deposition as the promoter of electron transfer, forming a AuNPs/MC-PNCDs/activated glassy carbon electrode (AGCE) sensor. MC-PNCDs had a large specific surface area, which combined with the excellent electrocatalytic activity of AuNPs, synergistically improved the electrocatalytic activity. The morphology and structure of the electrode surface modifier were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray photoelectron spectroscopy, infrared spectroscopy, X-ray diffraction, nitrogen adsorption–desorption analysis, and electrochemical characterization. Under the optimal conditions, the linear detection range of guanine (G) and adenine (A) was 0.5–160.0 μM, and the detection limits (S/N=3) were 72.1 and 69.6 nM, respectively. AuNPs/MC-PNCDs/AGCE was successfully constructed, and was used to simultaneously detect G and A with high sensitivity and selectivity. Moreover, the sensor was successfully used to detect G and A in herring sperm DNA samples. Graphical abstract
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Small
·
2025
·
IF 12.1
Yan Gao,Xiayu Lia,Shuai Huang,Na Zhao,Jianshe Zhao
Three-dimensionally ordered macro-microporous 3DOM-ZIF-8-based peroxophosphotungstate (DIL-PW 4 ) is constructed to break the limitation of micropores inherent in traditional supported catalysts. The presence of ordered macropores expose more active sites and significantly enhance mass diffusion, thereby boosting catalytic activity, especially in reactions involving larger molecules. The prepared composite DIL-PW 4 @3DOM-ZIF-8 is verified by various characterization techniques and used as a catalyst for the extraction oxidation desulfurization of multi-component simulated fuel. The results showed that heterogeneous catalyst DIL-PW 4 @3DOM-ZIF-8 has a remarkable catalytic effect, with 97.03% total sulfides removal in 120 min. In addition, the stability and reusability of the catalyst DIL-PW 4 @3DOM-ZIF-8 are evaluated as important parameters for industrial applications. In addition, a possible mechanism based on experimental studies are proposed.
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PubMed
高影响因子
Applied Sciences-Basel
·
2025
·Vol. 15
·期 14
·8095
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IF 2.5
Liqun Wu,Xiaojun He,Jian Zhou
The electrocatalytic CO2reduction reaction (CO2RR) offers an energy-saving and environmentally friendly approach to producing hydrocarbon fuels. The use of a gas diffusion electrode (GDE) flow cell has generally improved the rate of CO2RR, while the gas diffusion layer (GDL) remains a significant challenge. In this study, we successfully engineered a novel metal–organic framework (MOF) heterojunction through the controlled coating of zeolitic imidazolate framework (ZIF-L) on ultrathin nickel—metal–organic framework (Ni-MOF) nanosheets. This innovative architecture simultaneously integrates GDL functionality and exposes abundant solid–liquid–gas triple-phase boundaries. The resulting Ni-MOF@ZIF-L heterostructure demonstrates exceptional performance, achieving a formate Faradaic efficiency of 92.4% while suppressing the hydrogen evolution reaction (HER) to 6.7%. Through computational modeling of the optimized heterojunction configuration, we further elucidated its competitive adsorption behavior and electronic modulation effects. The experimental and theoretical results demonstrate an improvement in electrochemical CO2reduction activity with suppressed hydrogen evolution for the heterojunction because of its hydrophobic interface, good electron transfer capability, and high CO2adsorption at the catalyst interface. This work provides a new insight into the rational design of porous crystalline materials in electrocatalytic CO2RR.
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ACS Applied Polymer Materials
·
2025
·
IF 4.7
Mian Zhu,Chao Lyu,Bin Wang,Zhenhui Yu,Jingxian Liu
This study aimed to develop an effective CO2/N2 selective separation membrane for the capture of CO2 from air or flue gas. Polyvinylidene fluoride (PVDF) was chosen as the organic substrate for the preparation of mixed-matrix membranes (MMMs). To enhance the CO2 mass transfer rate, an ionic liquid (IL) with high CO2 solubility was introduced through direct material blending, while a leaf-like zeolitic imidazolate framework (ZIF-L) was functionalized with silane coupling agents as the inorganic filler. Subsequently, the prepared PVDF-IL@ZIF MMMs were tested for the CO2 separation performance and mechanical properties. The results revealed that IL loading could significantly enhance the separation performance of MMMs for CO2/N2 separation, and the AZL-incorporated IL loading MMM (PPAZL) exhibited the optimal gas separation performance, with 24.5% CO2/N2 selectivity at 2 bar transmembrane pressure. Notably, AZL also demonstrated superior interfacial compatibility with PVDF compared to both ZIF-8 and pristine ZIF-L, which facilitated the maximization of IL loading in the MMM, achieving more than 10% higher IL capacity than ZIF-8-filled counterparts while stabilizing IL immobilization within the membrane matrix.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Qing Yang,Hongbin Pu,Da-Wen Sun
The sensitive detection of quinalphos in food is crucial due to its improper use and the potential for serious harm. Surface-enhanced Raman spectroscopy (SERS) technology, provides a new way for rapid and ultra-sensitive detection. To exploit the molecular sieving effect of metal-organic frameworks (MOFs) in mitigating interference from food matrix components during pesticide residue detection, a novel chiral spiny L-Au@Ag@ZIF-8 (L-AAZ) three-layer core-shell composite was developed as an effective SERS substrate, with chiral L-AABPs providing abundant “hot spots” and spiny ZIF-8 shell provides excellent absorption properties, causing a five-fold increase in SERS intensity compared to traditional Au@Ag NPs. The experimental results revealed that L-AAZ achieved a high enhancement factor (EF) of 3.15 × 10 5 , a low limit of detection (LOD) of 6.56 × 10 −10 M, and a relative standard deviation (RSD) of 14.6 % for malachite green (MG), indicating its superior SERS sensitivity and consistency. Moreover, it demonstrated stable performance, maintaining good storage stability for up to 55 days. The substrate's suitability for the actual fruit sample (tangerine) was confirmed, showing an LOD of 10 ng/mL, demonstrating its capability for rapid and sensitive detection of trace amounts of pesticide residues in food.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xue Li,Jingjia Zhang,Qianhui Li,Shuimei Yang,Chengze Wei,Feng Zhang,Zhenbo Wang
Preparing low-cost and high-activity methanol oxidation reaction (MOR) electrocatalysts is a key approach for renewable energy technologies. However, due to the high price and instability of platinum-based catalysts, the addition of transition metals to alloy catalysts on the basis of platinum is a prevalent strategy to improve catalytic activity and stability. Herein, we prepared a PtCu alloy catalyst that is highly dispersed on an N-doped carbon dodecahedron (PtCu/N-DC) by a simple pyrolysis method. The experiments demonstrate that the robust interaction between N-doped porous carbon support and PtCu alloy imparts strong stability to the catalyst. At the same time, there is a strong interaction between Cu atom and Pt atom, doping with Cu can adjust its surface electronic configuration of Pt, thereby improving the MOR performance of the catalyst. With a platinum loading of just 10 % compared to the 20 % in commercial Pt/C, PtCu/N-DC exhibits mass activity and specific activity that are 4.1 times and 5.8 times higher, with significant catalytic activity and a high level of resistance to carbon monoxide poisoning. Theoretical analysis indicates that the PtCu/N-DC catalyst exhibits a low energy barrier during the critical steps, which aligns with the enhanced electrocatalytic activity demonstrated in the experimental findings.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Jiawen Zhu,Mengying Xia,Zhenzhen Liu,Yi Yuan,Qianqian Lv,Huina Zhou,Minghua Lu
Due to persistence, high toxicity, and tendency to bioaccumulate of polychlorinated biphenyls (PCBs), accurate detection of their residual levels in environmental and food samples is particularly important. To address the challenges posed by complex sample matrices and trace analytes, a new hierarchically porous (micro/mesoporous) carbon nanosheet (HPC-NS) material was designed as sorbent. The HPC-NSs were synthesized using cobalt-based ZIF-67 as self-sacrificial template and layered double hydroxide (LDH) as substrate. These HPC-NSs were applied as fiber coating material for solid-phase microextraction (SPME) to extract and enrich trace amounts of PCBs. By combining headspace SPME with GC–MS/MS, a highly sensitive method was developed for the detection of PCBs in green tea and milk. The proposed method demonstrated a wide linear range (0.2–5000 ng·L −1 ) and low detection limits (0.02–0.06 ng·L −1 ). Experimental results indicated that the HPC-NSs exhibit excellent extraction efficiency toward PCBs, which can be attributed to multiple mechanisms including pore filling, π–π stacking, cation–π interactions, and polar interactions. This work not presents a promising SPME coating material but also offers a robust and sensitive analytical method for detecting trace PCBs in complex matrices.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhibo Huang,Tiandi Pan,Ning Tang,Fei Sun,Peijian Du,Ni Li
Nanofibrous membranes are considered ideal candidates for water purification. However, the membrane fouling results in an irreversible decline in separation flux, while the slippage of nanofibers leads to an increase in pore size under driving pressure, subsequently inducing a decline in separation efficiency. Rational structure design and material selection are crucial for separation performance improvement. In this study, we report double-layer hierarchical structured nanofibrous membranes that demonstrate simultaneous superhydrophilicity and underwater superoleophobicity for oil-water separation via a combination of electrospinning and seed-mediated solvothermal strategy. The double-layered hierarchical structure comprises an upper layer of ZIF-8@PMIA composite nanofibers and a bottom layer of PMIA nanofibers. Notably, the incorporation of ZIF-8 species confers several advantages, such as increased surface roughness, reduced pore size, and enhanced superhydrophilicity, collectively contributing to superior anti-fouling performance and high separation efficiency. Meanwhile, the bottom PMIA nanofibers, with larger diameters, ensure robust mechanical integrity for the entire membrane. Due to the rational structural design, the membrane achieves outstanding separation performance, including a 99.91 % separation efficiency for diesel-in-water emulsions and an ultrahigh flux of 3821.7 L m − 2 h −1 for dichloromethane-in-water emulsions. Therefore, this membrane has broad application prospects in the oil–water separation field.
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JOURNAL OF NANOBIOTECHNOLOGY
·
2022
·Vol. 20
·期 1
·1-18
·
IF 9.429
Chen Xuehua,Huang Yongquan,Chen Hui,Chen Ziman,Chen Jiaxin,Wang Hao,Li Dan,Su Zhongzhen
Background Insufficient radiofrequency ablation (IRFA) can promote the local recurrence and distal metastasis of residual hepatocellular carcinoma (HCC), which makes clinical treatment extremely challenging. In this study, the malignant transition of residual tumors after IRFA was explored. Then, arsenic-loaded zeolitic imidazolate framework-8 nanoparticles (As@ZIF-8 NPs) were constructed, and their therapeutic effect on residual tumors was studied. Results Our data showed that IRFA can dramatically promote the proliferation, induce the metastasis, activate the epithelial–mesenchymal transition (EMT) and accelerate the angiogenesis of residual tumors. Interestingly, we found, for the first time, that extensive angiogenesis after IRFA can augment the enhanced permeability and retention (EPR) effect and enhance the enrichment of ZIF-8 nanocarriers in residual tumors. Encouraged by this unique finding, we successfully prepared As@ZIF-8 NPs with good biocompatibility and confirmed that they were more effective than free arsenic trioxide (ATO) in sublethal heat-induced cell proliferation suppression, apoptosis induction, cell migration and invasion inhibition, and EMT reversal in vitro. Furthermore, compared with free ATO, As@ZIF-8 NPs exhibited remarkably increased therapeutic effects by repressing residual tumor growth and metastasis in vivo. Conclusions This work provides a new paradigm for the treatment of residual HCC after IRFA. Graphical Abstract
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Tianyang Zhao,Chengbo Jia,Haoran Sun,Run Li,Zezhou Zhang,Yu Wang,Jialin Guo,Feng Tian,Chunfeng Song
The mixed matrix membrane (MMM) can combine the advantages of organic matrix and inorganic fillers, but it has the problem of limited compatibility between the fillers and the matrix. In this work, we constructed a metal-organic framework material (MOF) with a functional shell. Through the induced grafting effect of surfactants, a layer of zeolite imidazolate framework structure material (ZIF-8) was formed on the chromium-based metal-organic framework material (MIL-101(Cr)). Utilizing the microporous structure of the shell ZIF-8 and the micropore-mesopore structure of the core MIL-101(Cr), a “separation-diffusion” gas mass transfer pathway was formed within the membrane, effectively enhancing the CO 2 separation and purification performance of the membrane. Then, the MIL@ZIF filler was incorporated into the cross-linked PEO polymer matrix to obtain the XLPEO/MIL@ZIF membrane. It was demonstrated that the MIL@ZIF core-shell filler has a more excellent ability to enhance the gas separation performance of the membrane compared to the single MIL-101(Cr) and ZIF fillers. Under the optimal loading condition, the XLPEO/MIL@ZIF membrane achieves a CO 2 permeability of 328 Barrer and a CO 2 /N 2 selectivity of 93.1, which are 83.2 % and 72.1 % higher than the pure membrane, surpassing the upper limit (2019). This filler preparation strategy and MMM preparation method provide a promising direction for subsequent related research.
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高影响因子
CARBON
·
2025
·
IF 11.6
Hao Lu,Xianchu Wang,Chenyu Wang,Qihang Wang,Jingjing Xie,Weiming Wang,Zhengyi Fu,Zhaoyong Zou
Zeolitic Imidazolate Frameworks (ZIF-8) has emerged as promising candidate for alleviating the aggregation of Fe 3 N-catalysts, exhibiting significantly improved oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for rechargeable zinc-air batteries. To further improve the catalytic performance, it is crucial to fabricate ZIF-8 with hierarchically porous structures, which remains challenging due to the rapid crystallization kinetics and the weak interactions. Inspired by biological porous materials, we developed a novel method using 1,3,5-trimethylbenzene TMB as a mediating molecule to dynamically regulate the organic-inorganic interface between templates and ZIF-8 precursors, achieving the micro-meso-macropores of ZIF-8, which synergistically enhances mass transport and active site accessibility. Additionally, TMB preserves the weakly alkaline environment required for ZIFs’ structural integrity by leveraging its hydrophobic co-solvent effect. The as-synthesized Fe 3 N-HPZIF-8 catalyst integrates Fe 3 N active sites, hierarchically porous structures, and pyrrolic-N dopants, resulting in the exceptional bifunctional activity in alkaline media (ΔE = 0.619 V), exceeding most benchmark catalysts. When integrated into zinc-air batteries, a peak power density of 205.2 mW cm -2 is achieved. This work presents a generalizable synthetic approach for high-performance metal-air battery catalysts.
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