CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Mengyuan Cao,Bicong Wang,Yuchao Deng,Da-Wei Pan,Xiao-Jie Ju,Rui Xie,Zhuang Liu,Xing-Long Zhou,Mao-Jie Zhang,Wei Wang,Liang-Yin Chu
Anthocyanins are promising natural antioxidants widely present in plants. While enzymatic catalytic hydrolysis is a feasible strategy for the extraction of bioactive compounds from plants, the limited stability of free enzymes poses a significant challenge to this approach. Enzyme immobilization using zeolitic imidazolate framework-8 (ZIF-8) demonstrates considerable potential for improving enzymatic tolerance. However, enzyme@ZIF-8 encounters challenges due to reduced bioactivity, primarily attributed to the microporous structure of ZIF-8. To address these limitations, defect-induced mesopores are created in multi-enzyme@ZIF-8 through in-situ millifluidic synthesis, followed by UV post-treatment to introduce additional surface defects. These multi-enzyme@ZIF-8/UV nanoparticles adhere to black rice powder via electrostatic interactions, thereby facilitating the cell wall breakdown. The anthocyanin extraction yield of multi-enzyme@ZIF-8/UV reaches 10.76 mg/L, representing a 31.7 % increase compared to multi-enzyme@ZIF-8 without UV post-treatment. This study provides defect-engineered porous ZIF-8 biocomposites that simultaneously enhance the stability and catalytic activity of encapsulated enzymes for efficient extraction of plant-derived polyphenolic flavonoids, demonstrating broad potential in sustainable biocatalysis and natural product recovery.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Fang Qi,Luo Chongwen,Guo Xiaohuan,Cai Bingbing,Zhou Yuzhu,Hu Kun,Wen Changchun
Chemodynamic therapy (CDT) uses the Fenton reaction to generate highly toxic hydroxyl radicals (∙OH) to achieve efficient treatment strategies for tumors. However, the high concentration of glutathione (GSH) in the tumor microenvironment (TME) can scavenge these radicals, thereby diminishing the efficacy of CDT. In this study, we propose a programmable synergistic therapeutic strategy that depletes GSH during chemotherapy (CT) and subsequently increases the production of reactive oxygen species (ROS) to achieve high-potency CDT. We constructed a Cu-Q@Co/ZIF-8 (CQZ) composite nanoplatform by encapsulating cobalt-doped ZIF-8 (Co/ZIF-8) with copper-quercetin (Cu-Q, CQ). The construction of nanoplatform significantly enhanced the water solubility of Co/ZIF-8 and CQ. When the nanoplatform reached the tumor site, the TME triggered the release of quercetin and Cu 2+ from CQ, thus enabling quercetin-based chemotherapy and Cu 2+ -mediated GSH depletion while generating Cu + . Subsequently, the Co 2+ released from Co/ZIF-8 acted with Cu + to catalyze a Fenton-like reaction with endogenous H 2 O 2 , efficiently producing toxic ∙OH radicals for CDT. Throughout the treatment process, Cu 2+ was preferentially released in response to the TME to consume GSH, not only generating Fenton-active Cu + but also preventing the GSH-mediated scavenging of ∙OH. This procedural mechanism has substantially enhanced the therapeutic efficacy of CDT following CT.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Meng Xu,Mianyu Bao,Han Zhang,Chun Xu,Yanmao Dong,Yan Yuan,Jie Liu,Li Jiang
The development of intelligent coatings shows great potential for sustained corrosion protection. In this study, ZIF-8 was combined with graphene oxide (GO) and the corrosion inhibitor 1,10-Phenanthroline (Phen) to prepare PZ 8 G nanomaterials. These nanoparticles were introduced into a dispersed carbon nanotube enhanced water-borne acrylic epoxy resin to fabricate a corrosion inhibition coating (PZ 8 G/DCE), followed by electrodeposition of a polypyrrole (PPY) outer film to construct a PZ 8 G/DCE/P bilayer architecture with enhanced anti-corrosion performance. The PZ 8 G composites exhibited improved compatibility with acrylic epoxy resin compared to pristine ZIF-8, and the PZ 8 G/DCE/P bilayer coating presented satisfactory adhesion. This coating effectively enhanced the corrosion resistance of 304SS in both acidic and saline environments, increasing the corrosion potential by 0.36 V and 0.3 V, respectively. The coating demonstrated significant efficacy in acidic conditions, in which the EIS tests confirmed stable protection over 30d of immersion, while SEM characterization after 60d of immersion revealed it maintained structural integrity with minimal morphological changes. Furthermore, the self-healing capability of PZ 8 G/DCE/P coating system was verified through EIS measurements on artificial scratches combined with elemental analysis, which demonstrated the active release of inhibitors and the formation of protective composites at damaged region. The synergistic combination of PPY, which exhibits dual functionality as both anodic protection and physical barrier, with actively corrosion inhibiting PZ 8 G nanofillers, effectively provided a sustained active-passive corrosion protection for stainless steel under aggressive conditions. This work suggests a promising strategy for designing smart anti-corrosion materials.
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高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
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IF 7.4
Yanyan Liu,Hongzhan Huang,Xin Wei,Panpan Gui,Guobin Li,Zhenbang Han,Changhai Xu
Polyethylene terephthalate (PET) fabrics are highly flammable and generate substantial smoke emissions, necessitating effective flame-retardant treatments. In this study, we developed an environmentally friendly strategy to construct a metal-organic framework (MOF)-assisted phosphorus-nitrogen synergistic flame-retardant system on PET fabric. This was achieved through in situ growth of ZIF-8 via a solvent-saving hot-pressing method, followed by 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) incorporation using a water-saving supercritical CO 2 technique. Comprehensive characterizations and density functional theory (DFT) calculations demonstrated that ZIF-8 enhances the immobilization and stabilization of DOPO on PET through chemical interactions, resulting in a durable flame-retardant material. The treated fabric demonstrated significantly improved fire safety compared to pristine PET, with a higher limiting oxygen index (LOI, from 21% to 31.6%), reduced peak heat release (20.2%), suppressed peak smoke production (54.1%), and lower average CO yield (79.6% reduction). A dual-phase flame-retardant mechanism (condensed and gas phases) was proposed based on systematic analyses. Importantly, the modified fabric retained its mechanical properties and breathability while acquiring additional functionalities including UV resistance and antibacterial properties. This work presents a sustainable and efficient strategy for designing high-performance, fire-safe textiles via MOF assisted synergistic engineering.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Jiatian Li,Sicong Tan,Jiarui Lu,Jinze Wang,Qian Feng,Junfeng Wang,Zhaoyang Xu
Wood-derived carbon is an ideal material for self-supporting electrode supercapacitors based on its anisotropic porous structure and excellent electrical conductivity from natural wood. However, the low specific surface area and space utilization limit the development of performance. This study reports efficient Polydopamine(PDA)/ Metal-organic frameworks (MOF)/Wood supercapacitor electrodes with a sandwich channel structure and a one-step composite method. The assembled supercapacitor electrodes exhibit effect energy density (0.40 mW h cm −2 ), power density (1000 mW cm −2 ), and recycling stability(10,000 cycles - 81.53 %). The fabrication of these sandwich channel structures with 2-methylimidazole zinc salt (ZIF-8) derived carbon increased the specific surface area, which is not only simple and precisely controllable, but SCnitrogen doping was introduced to improve the electrochemical performance by PDA. The one-step composite method could link the wood-derived carbon framework and ZIF-8 interface by PDA enhancement. This study promises prospects for developing high-performance supercapacitors to ensure clean fuel and green energy storage devices.
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高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
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IF 6.3
Zichen Wang,Yao Dai,Yumeng Wang,Peilu Zhang,Lin Zhou,Yuan Jiang,Ruoke Liu,Sarah Elfadil Ali Adam,Chao Sun,Xiaochun Chen
Polyethylene glycol terephthalate (PET) is widely utilized in industrial applications and everyday life. However, its extensive use has led to substantial environmental challenges. This study presents a highly active and selective [DBU][m-cresol] proton-ionic liquid (PIL)-immobilized ZIF-8 catalyst for PET resource utilization. Using just 15 mg of the ZIF-8@[DBU][m-cresol]-2 catalyst, PET degradation reached 97.72 %, while BHET conversion achieved 86.95 % within 60 min. The Zn 2+ ions in the catalyst decrease the electron density of the m-cresol carbocation, thus improving the nucleophilic substitution capability of [DBU][m-cresol]. The influence of catalyst dosage, the ethylene glycol-to-PET ratio, and temperature on degradation and conversion was investigated. After five cycles, the catalyst retained a degradation efficiency of 77.71%. In practical applications, testing on three commercial PET materials demonstrated degradation efficiencies exceeding 90%. DFT calculations and LC-MS analysis indicate that hydrogen bonding among ethylene glycol (EG), PET, and ZIF-8@[DBU][m-cresol] enhances PET’s electrophilicity, while Zn 2+ decreases the electron density of carbocations, thereby facilitating PET degradation. This work highlights the potential of proton-based ionic liquid-supported catalysts for efficiently converting PET waste into valuable resources.
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高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Shouhui Chen,Rihui Zhou,Yaqin Chen,Ping Li,Yonghai Song,Li Wang
Zeolitic imidazolate frameworks are a class of metal organic frameworks which are very attractive for their pore structures. However, their pore size and the BET surface would shrink when they underwent heat treatment at high temperature. On the other hand, liquid metal in MOFs might flow through the pores and prevent the shrinkage when pyrolysis. As is known that metallic Sn is liquid when the temperature is above 232 °C, flowing Sn might support and maintain the porous structure of MOFs during the pyrolysis. In this work, porous Sn/C-ZnO core-shell structures were prepared as anodes for LIBs via a two-step method. Firstly, SnO 2 particles were encapsulated in a ZIF-8 layer with different thickness. Then Sn/C-ZnO was generated in inert atmosphere at 700 °C. A Sn/C-ZnO composite, with 11.2% of Sn and 21.0% of ZnO in content, had a BET surface of 32.9 m 2 g -1 . Another Sn/C-ZnO composite, with 55.1% of Sn and 1.8% of ZnO in content, had a larger BET surface of 297 m 2 g -1 . Then the two composites were tested as anodes for LIBs. Although the BET surface of the former was significantly less than that of the latter before cycling and the content of Sn in the former was also much lower than that of the latter, the discharge capacity of the former after 50 cycles was 515.6 mAh g -1 at 100 mA g -1 in the potential of 0.01~3.00 V, which was slightly higher than that of the latter.
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高影响因子
Green Chemical Engineering
·
2020
·
IF 0
Zhengqing Zhang,Xuemeng Jia,Yuxiu Sun,Xiangyu Guo,Hongliang Huang,Chongli Zhong
CO 2 separation performance of polymer membranes can be significantly enhanced by selecting porous fillers with high CO 2 affinity. Ionic liquids incorporation has been recognized as an effective strategy for improving the separation ability of pristine porous fillers. However, the influence of the specific functional groups of ILs in IL@MOF composites on separation performance of MMMs still remains unclear. Herein, we designed three microenvironment-tuned IL@ZIF-8 composites in which the three ILs contain different functional groups (-CH 3, –SO 3 H, and –NH 2 ). Molecular simulation results showed that the NH 2 -IL@ZIF-8 has a commendable CO 2 adsorption capacity and CO 2 /CH 4 adsorptive selectivity, and the results were well confirmed by the following experimental data. More importantly, the prepared NH 2 -IL@ZIF-8 based MMMs also exhibit superior CO 2 separation performance among the three IL@ZIF-8 based MMMs owning to its high CO 2 affinity. Thus, this work can provide guidance for designing IL@MOF composites for MMMs fabrication towards gas separation, and the research mode combining molecular simulation prediction and experimental verification can afford valuable reference for material development in membrane separation field.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
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IF 5.107
Zhihao Si,Di Cai,Shufeng Li,Guozhen Li,Ze Wang,Peiyong Qin
The diffusion process is the rate-limiting step for n -butanol recovery from diluted aqueous solution, which can be improved by incorporating hydrophobic nanoparticle into the polymer matrix. However, the micropore structure of zeolitic imidazolate framework-8 (ZIF-8) in the commonly applied ZIF-8-based mixed matrix membrane (MMM) could hardly meet the diffusion demand of the penetrant molecules. Herein, ZIF-8-derived nanoporous carbon (ZNC) with larger pore diameter and pore volume was prepared to replace ZIF-8 in conventional MMM in order to improve the diffusion process. An increase of 68.7% in n -butanol permeability of ZNC/PDMS MMM with 3 wt% of particle loading was obtained compared with ZIF-8/PDMS MMM. Coupled with the good compatibility between ZNC and PDMS , ZNC was homogeneously dispersed in PDMS matrix. As a result, a n -butanol permeability of 109,583 Barrer and a n -butanol/water selectivity of 4.47 were obtained for n -butanol recovery from 1.5 wt% n -butanol/water solution at 55 °C, which were increased by 145.4% and 17.6%, respectively, compared with the pure PDMS membrane. Overall, the ZNC-filled PDMS membrane shows promising in effective separation of n -butanol in realistic applications.
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高影响因子
PETROLEUM CHEMISTRY
·
2024
·Vol. 64
·期 2
·297-308
·
IF 1.3
Han Yating,Xia Xia,Peng Zexuan,Xiao Yang
Abstract To address the limitations of the existing catalytic hydrogenation and sulfuric acid sulfonation intended to remove aromatic hydrocarbons from liquid paraffin oils, the adsorption method was chosen for the adsorptive separation of phenanthrene, a typical aromatic hydrocarbon, from liquid paraffin oils. A zeolite imidazolate framework-8 (ZIF-8) precursor was firstly prepared, and then ZIF-8-derived porous carbon (ZDPC) adsorbents were obtained using different temperatures of carbonization of the precursor under nitrogen atmosphere; these adsorbents were then used for the adsorption and separation of phenanthrene from liquid paraffin oils. The experiment showed that the maximum specific surface area of a ZDPC adsorbent could reach 1458 m 2 /g at 900°C. However, the total pore volume and adsorption capacity of ZDPC porous carbon were maximal at the carbonization temperature of 800°C (1.59 cm 3 /g and 931 mg/g, respectively). The obtained results showed that an increase in the specific surface area of the adsorbent did not necessarily enhance the adsorption performance. However, compared with the specific surface area of the adsorbent, its adsorption performance is improved in the case of larger pore structures. Therefore, the pore structure of the adsorbent has a very important influence on the adsorption performance. The results of kinetic and thermodynamic studies showed that the pseudo-second-order model could better explain the adsorption process of ZDPC on phenanthrene, while the intra-particle diffusion model revealed that the adsorption mechanism represented a continuous three-stage process.
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高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2024
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IF 3.1
Bian Hang,Li Peng,Ma Yu,Liu Lin,Li Dong,Zhang Ning
In recent years, the surge in industrialization and urbanization has led to the release of a significant amount of heavy metal ions into water. These ions, when present in drinking water, can enter the human body and cause irreversible health problem. Metal-organic frameworks (MOFs) have drawn considerable attention for their outstanding ability to remove these heavy metal ions. However, MOF powders tend to aggregate in water, reducing their adsorption efficiency and potentially leading to secondary environmental pollution. In this regard, the development of MOF composites that are highly adsorptive, recyclable, and maintain stable dispensability in water is crucial for heavy metal ions removal. Herein, the in situ growth of zeolitic imidazolate framework (ZIF-8) on melamine sponge (MS) using a secondary growth method is reported. The resultant composite sponges exhibit high efficiency in adsorbing Pb(II) and Cu(II) from water and maintain good reusability. These findings offer a promising method in efficiently eliminating Pb(II) and Cu(II) from aqueous solutions.
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高影响因子
NANOTECHNOLOGY
·
2020
·Vol. 31
·期 12
·125601
·
IF 3.551
Qianyun Bin,Min Wang,Lishi Wang
In this work, silver nanoparticles (Ag NPs) were decorated into the cavities of ZIF-8 to fabricate a novel Ag NPs/ZIF-8 modified glassy carbon electrode (GCE) for electrochemical sensing of chloride ion. Benefiting from the synergistic properties of ZIF-8 and Ag NPs, the Ag NPs/ZIF-8/GCE showed favorable performance towards chloride ion. For comparison, the electrochemical activity of Ag NPs wrapped by ZIF-8 (Ag NPs@ZIF-8) and Ag NPs coating on ZIF-8 (Ag NPs-on-ZIF-8) were also investigated and it was found that Ag NPs/ZIF-8 possessed the best performance. Some experimental parameters including pH of the supporting electrolyte and scan rate were also investigated. Under optimal conditions, the proposed sensor exhibited excellent stability, reproducibility and selectivity for the determination of chloride ion with a wide linear detection range from 5 to 4000 μmol dm−3 and a low detection limit of 0.61 μmol dm−3 (S/N = 3). The proposed sensor was successfully applied to the determination of chloride ion spiked in human serum. All these results indicated that the developed Ag NPs/ZIF-8/GCE sensor was superior.
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