JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Hongxu Tao,Haiqian Lian,Jingxian Hua,Shengui Ju,Yichang Pan
The MOF membrane has shown great promise for the gases or organic solvent mixtures separation. However, the implementation of MOF membranes remains challenged by defect formation during membrane fabrication. Herein, we reveal that the activation solvent plays a critical role in governing the degree of defect and separation performance in secondary-growth-derived ZIF-8 membranes. The isopropanol activation process exerts excellent membrane structure protection through a synergistic dual mechanism to limit the generation of ZIF-8 membrane defects during drying: (a) The isopropanol inhibits the ZIF-8 seed layer recrystallization and maintains its porous architecture to mitigate interfacial stress during drying through its elastic deformation. (b) The low surface tension of isopropanol minimizes the capillary force during solvent removal to reduce the risk of structural damage. While methanol activation and n-propanol activation have no such structure control. The optimized isopropanol-activated membrane achieves a C 3 H 6 /C 3 H 8 selectivity of 141 to show a 4.8-fold and a 4.4-fold compared to n-propanol- and methanol-activated membranes at room temperature and 1 bar. This study highlights low-surface-tension as an effective strategy for defect suppression in MOF membranes, advancing their potential for industrial hydrocarbon separations.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Dujuan Wu,Ruiqi Xin,Lingling Hu,Onder Tor,Ye Song,Song Li,Meiling Chen,Wenkai Zhu
Indoor air pollution presents a significant challenge to human health, driving the development of advanced materials for indoor environmental remediation. Metal–organic frameworks (MOFs) derived materials possess great promise as promising candidates for addressing this challenge. In this work, the delignified bamboo with multi-scale structure was employed as a substrate to fabricate ZIF-8@bamboo by in-situ and ex-situ growth strategies. The results demonstrated that the delignified bamboo exposed polysaccharided cellulose active group originally present in the bamboo cell walls. The pretreated bamboo was facilitated to the uniform growth of ZIF-8 crystals, and the loaded ZIF-8 exhibited high crystallinity and well-distributed morphological characteristics. Moreover, the successful growth of ZIF-8 increased the bamboo’s specific surface area. Additionally, the formaldehyde adsorption tests revealed that the ZIF-8@bamboo exhibited a 227.73 % improvement for formaldehyde adsorption rate at room temperature. Meanwhile, it also showed a rapid adsorption rate, high adsorption capacity, and reusable performance for formaldehyde. Furthermore, the as-prepared ZIF-8@bamboo demonstrated high removal efficacy for other indoor pollutants, including PM2.5 and PM10. Moreover, the ZIF-8@bamboo exhibited high indoor pollutant removal efficiency after five repeated cycles. Therefore, the ZIF-8@bamboo proposed in this work provides an effective solution to address indoor environmental pollution.
研究领域:
材料科学
·
环境科学
·
室内环境治理
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2018
·Vol. 10
·期 24
·11384-11391
·
IF 7.233
Linlin Wang,Hongli Zhu,Ying Shi,You Ge,Xiaomiao Feng,Ruiqing Liu,Yi Li,Yanwen Ma,Lianhui Wang
Micromotors hold promise as drug carriers for targeted drug delivery owing to the characteristics of self-propulsion and directional navigation. However, several defects still exist, including high cost, short movement life, low drug loading and slow release rate. Herein, a novel catalytic micromotor based on porous zeolitic imidazolate framework-67 (ZIF-67) synthesized by a greatly simplified wet chemical method assisted with ultrasonication is described as an efficient anticancer drug carrier. These porous micromotors display effective autonomous motion in hydrogen peroxide and long durable movement life of up to 90 min. Moreover, the multifunctional micromotor ZIF-67/Fe3O4/DOX exhibits excellent performance in precise drug delivery under external magnetic field with high drug loading capacity of fluorescent anticancer drug DOX up to 682 μg mg−1 owing to its porous nature, high surface area and rapid drug release based on dual stimulus of catalytic reaction and solvent effects. Therefore, these porous ZIF-67-based catalytic micromotors combine the domains of metal–organic frameworks (MOFs) and micomotors, thus developing potential resources for micromotors and holding great potential as label-free and precisely controlled high-quality candidates of drug delivery systems for biomedical applications.
研究领域:
生物医学工程
·
纳米医学
·
材料科学
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Niu Liu,Jun Cheng,Wen Hou,Xiao Yang,Junhu Zhou
In order to form strengthened active sites for superior CO 2 adsorption on core shell ZIF-8@ZIF-67 nanocomposites , graphene oxide (GO) with oxygen-containing functional groups was used as support to synthesize hybrid adsorbents with unsaturated Zn–N 2 –O active sites. The results of XPS O 1s and FTIR analysis revealed that the Me–O functional group content in the 0.5 wt% graphene oxide (GO)-supported core shell ZIF-8@ZIF-67 nanocomposite (38.9 at.%) was much higher than that in the 0.5 wt% reduced graphene oxide (RGO)-supported nanocomposite (19.4 at.%). This was because hydroxyl functional groups in the GO formed coordination bonds with zinc atoms in core shell ZIF-8@ZIF-67. XPS N 1s spectra indicated that the incorporation of oxygen-containing functional groups in GO resulted in the transition of binding form from Me–N 4 to Me–N 2 . The CO 2 adsorption capacity of GO-supported core shell ZIF-8@ZIF-67 gradually decreased from 2.15 to 1.30 mmol/g as GO weight percentage increased from 0.5 to 4 wt%, which was consistent with the decrease in BET surface area from 1378 to 585 m 2 /g and increase in peak pore diameter from 7.7 to 8.2 Å. Density functional theory (DFT) calculations demonstrated that unsaturated Zn–N 2 –O active sites in GO-supported core shell ZIF-8@ZIF-67 nanocomposites resulted in a decreased O C⋯Zn interaction distance from 4.65 (Zn–N 4 sites in core shell ZIF-8@ZIF-67) to 3.46 Å and an increased binding energy from 34.02 to 38.87 kJ/mol. Therefore, 0.5 wt% GO-supported core shell ZIF-8@ZIF-67 nanocomposites exhibited the highest CO 2 adsorption capacity of 2.15 mmol/g (at 273 K and 1 bar), 1.34 times higher than that of core-shell ZIF-8@ZIF-67.
✓ 已验证
产品关联
DOI
高影响因子
ACS Biomaterials Science & Engineering
·
2020
·
IF 4.152
Lingxia Shi,Jun Wu,Xinrui Qiao,Yuan Ha,Yunpeng Li,Cheng Peng,Renbing Wu
The exploration of metal–organic frameworks (MOFs) with good biocompatibility and physiological stability as carrier platforms for biomedical applications is of great importance but remains challenging. Herein, we developed an in situ biomimetic mineralization strategy on zeolitic imidazolate framework (ZIF) nanocrystals to construct a drug release system with favorable cytocompatibility, improved stability, and pH responsiveness. With lysozyme (Lys) wrapped on the surface of Zn-based ZIF (ZIF-8), Lys/ZIF-8 could strongly bond metal ions to promote nucleation and growth of bone-like hydroxyapatite (HAp), leading to formation of HAp@Lys/ZIF-8 composites. In vitro investigations indicate that the composites with a hollow Lys/ZIF-8 core and a HAp shell exhibited a high drug-loading efficiency (56.5%), smart pH-responsive drug delivery, cytocompatibility, and stability under physiological conditions. The proposed biomimetic mineralization strategy for designing MOFs-based composites may open a new avenue to construct advanced delivery systems in the biomedical field.
研究领域:
生物医学工程
·
材料科学
·
药学
✓ 已验证
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Luan Fu,Lulu Du,Weizhong Tan,Zihao Liang,Xiaohui Shi,Li Lv,Pinhua Zhang,Guangliang Cui
Abstract The rapid and accurate detection of H2S in exhaled breath at room temperature remains a critical technical challenge. Herein, we developed a Pt@ZIF-8/Cu2O heterojunction sensor via a two-dimensional electrodeposition in-situ assembly strategy for sensitive H2S detection. This sensor exhibits superior room-temperature sensing performance: a remarkably high response of 8931 toward 10 ppm of H2S, an ultralow detection limit of 10 ppb (response ∼0.61), and a 11.8-fold enhancement in response to 500 ppb H2S relative to pristine Cu2O. The exceptional sensing performance is attributed to the synergistic effects of the high-specific-surface-area structure, the catalytic activity of Pt nanoparticles, and optimized interfacial charge transfer at the heterojunction. Notably, as the relative humidity increases from 37 to 94%, the response time toward 5 ppm of H2S decreased by ∼33% (from 330 to 220 s), while the response magnitude concurrently increases by ∼117% (from 3183 to 6907). This humidity-induced performance improvement significantly enhances operational reliability in practical applications, thereby eliminating the requirement for complex humidity control systems. This unique phenomenon is associated with the [Zn–OH]+ active sites within the ZIF-8 framework, which facilitate the adsorption of H2S molecules. More importantly, the sensor enables sensitively quantification of H2S concentrations in human exhaled breath, highlighting its great potential for noninvasive disease diagnosis.
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Fengzhen Yang,Meixuan Li,Kaiyuan Jia,Qiang Zhang,Chaoyuan Wang,Yuhe Wang,Jianmin Zhang,Jianhan Lin,Lei Wang
Bacterial aerosols, a major infectious disease transmission route, require effective capture, inactivation, and detection. Most air filters provide high-efficiency filtration but lack efficient target recovery and rarely integrate inactivation with downstream analysis. Herein, a monolithic ZIF-8-based foam coupled with a nanozyme-assisted colorimetric biosensor was developed for bacterial aerosol sampling, recovery, and detection. A polysaccharide ZIF-8-based foam (PC-ZIF-8 foam) was used to efficiently capture and concentrate airborne bacteria. The foam was then dissolved in phosphate-buffered saline (PBS) to release the captured bacteria, thereby enabling direct downstream analysis. Meanwhile, zinc ions (Zn 2 + ) released during dissolution contributed to bacterial inactivation, which enhanced biosafety during subsequent sample handling. Besides, a colorimetric biosensor based on Fe-ZIF-8 nanozymes was used for detection of the captured bacteria. This system achieved high performance: > 99.95% capture efficiency for 0.3–1 μm bacterial aerosols at 4 L/min while only causing low pressure drops (<35 Pa), > 99.99% bacterial inactivation within 15 min, and a low detection limit of 117 CFU/m 3 in 90 min. This work provided a practical platform for integrated bacterial aerosol sampling and detection with improved recovery and operational safety.
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Qian Sun,Yan Wei,Yaning Peng,Xin-Ran Shi,Jie-Xin Wang
Adsorption of antibiotic molecules using metal-organic frameworks (MOFs) normally relies on the exposure of external active sites on the adsorbent and the construction of hierarchical pores. Currently, most reported synthesis methods of porous MOFs are complex and inefficient. Herein, we propose a facile strategy for preparation of ZIF-8 nanoparticles and ZIF-8 nanoaggregates via high-gravity technology combined with surface modification process for the adsorption of tetracycline. Compared with unmodified ZIF-8 nanoparticles, the particle size of ZIF-8-KH550 can be significantly reduced from 22.6 nm to 8.2 nm, while the cluster-like ZIF-8-PVP with a hierarchical pore can be achieved. The adsorption capacity of ZIF-8-KH550 is 235 mg g -1 , and that of ZIF-8-PVP is 216 mg g -1 , both of which are dramatically higher than that of unmodified ZIF-8 nanoparticles (188 mg g -1 ), demonstrating significantly enhanced adsorption performance. More importantly, the adsorption rate constant of ZIF-8-PVP is nearly twice as that of unmodified nanoparticles, which is superior to most reported ZIF-8 materials. This work provides a new approach for the design and synthesis of MOFs with small sizes and abundant structures, further broadening their applications.
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2026
·Vol. 26
·期 15
·5829-5837
·
IF 3.6
Wei Yonghao,Liu Daiming,Zhang Guodong,Wang Fei
The dual encapsulation of natural gas via adsorption
and hydration
in prehumidified nanoporous materials provides a novel strategy for
its dense storage under milder conditions, but the encapsulation performance
is highly dependent on the material itself. To enhance the encapsulation
performance, ZIF-8 was functionalized with amination (−NH 2 ) and metal doping (Cu 2+ ), yielding two nanoporous
materials, ZIF-8-NH 2 and ZIF-8-NH 2 @Cu. The effects
of −NH 2 and Cu 2+ on the adsorption and
hydration encapsulation performance were evaluated, and their coupling
relationship with preadsorbed water was analyzed. The results demonstrate
that −NH 2 improves the adsorption encapsulation
performance of methane, increasing the adsorption rate at a low pressure
by 109.7%. In addition, −NH 2 also enhances the hydration
encapsulation efficiency and strengthens the hydration efficiency
of preadsorbed water. Consequently, the adsorption-hydration dual
encapsulation capacity of methane by ZIF-8-NH 2 is increased
by 30.12% compared to pure adsorption, effectively lowering the hydration
initiation pressure and increasing the gas storage density at low
pressure. However, the enhancement effect of −NH 2 on hydration efficiency is strongly dependent on the amount of preadsorbed
water; when the preadsorbed water content increases to R w = 1, the hydration-encapsulated methane
amount can be elevated by 368%. In contrast, the effects of Cu 2+ functionalization on methane adsorption and hydration encapsulation
are below expectations, and it even exhibits an antagonistic effect
with −NH 2 under specific conditions, reducing the
adsorption-hydration dual-encapsulation performance. These findings
can guide the preparation of high-performance nanoporous materials
for adsorption-hydration dual encapsulation, thereby promoting the
application of hydrate-based gas-storage technology.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Nijuan Liu,Yuanzhuo Li,Nana Wang,Fupeng Jin,Duoqiang Wang,Ruijuan Wang,Hongping Zhang,Hao Liang,Ruibin Guo,Wei Tian,Zunli Mo
The extraction of uranium from seawater is crucial for the advancement of sustainable energy development, driving urgent demands for high-performance adsorbents. Herein, a composite adsorbent was engineered based on MXene nanosheets. To address the self-stacking issue of the nanosheets, polyacrylamide (PAM) was intercalated as a molecular spacer, which was followed by the in situ growth of zeolitic imidazolate framework-8 (ZIF-8) on the modified MXene nanosheet surface. The material exhibited a hierarchical pore structure and high specific surface area (604 m2/g), facilitating active site exposure. Maximum uranium adsorption capacity reached 909 mg/g at pH 4.0 and 298 K, with high selectivity. Adsorption kinetics conformed to a pseudo-second-order model, isotherms aligned with the Temkin model, and thermodynamics revealed a spontaneous, endothermic process. FT-IR and XPS spectroscopy confirmed the UO22+ coordination with MXene (Ti–O, –COOH), PAM (–NH2), and ZIF-8 (pyrrole-N, Zn–O). The material maintained stable performance in complex aqueous environments, exhibiting uranium adsorption capacities of 33, 34, and 37 mg/g in spiked salt lake water, seawater, and Yellow River water systems, respectively. This work has provided valuable insights for designing MXene-based adsorbents for uranium extraction from natural water.
研究领域:
材料科学
·
环境工程
·
核能
·
吸附技术
·
纳米材料
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Ziqin Yao,Ke Yang,Kun Zhu,Sisi Cheng,Hongjing Wang,Annayev Remezan
The hydrophobic long-chain coupling agent, γ-aminopropyltriethoxysilane (KH550), was selected for the modification of ZIF-67 to create hydrophobic imidazole metal-organic frameworks (MOFs) composites, designated as SA/ZIF. The study reveals that the modified SA/ZIF exhibits substantial enhancement in surface wettability, achieving a water contact angle (WCA) of 123.2 ± 2°, in stark contrast to the original ZIF-67, which displayed a WCA of 0°. Additionally, the research involved coating an in-situ synthesized ZIF/MS sponge with a KH550 hydrophobic emulsion through dip-coating to enhance surface roughness and reduce surface energy, successfully creating hydrophobic SA/ZIF/MS sponge composites. This material exhibits excellent water resistance, with a WCA of 157.6 ± 2°, effectively separates oil/water mixtures with a separation efficiency of 99 %, and results in a filtrate with a water content of <10 ppm after separation. Furthermore, the material shows outstanding adsorption capacity for eight different oils and organic solvents, ranging from 54.1 g/g to 140.1 g/g. The article also details the synthesis, characterization, and performance of the material in oil-water separation applications.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Mide Luo,Yali Zhao,Zong Lu,Yanying Wei
Metal-organic framework (MOF) membranes exhibit remarkable potential for gas separation due to their tunable porous structure and well-defined molecular sieving channels. However, the rapid growth of continuous, defect-free MOF membranes on microporous polymer substrates remains a significant challenge. In this work, we proposed a substrate modification strategy via MXene stacking, where large-flake MXene nanosheets were employed to construct a functional coating that simultaneously reduced substrate surface roughness and enhanced its conductivity for subsequent ease growth of MOF membrane. By combining spray coating with fast current-driven synthesis method (FCDS), we successfully fabricated a series of ZIF-8-MXene/Nylon composite membranes. Compared with conventional secondary growth or solvothermal methods, this approach offered superior fabrication efficiency, membrane uniformity, and operational simplicity, where a high-quality membrane could be prepared within 1 h. Under optimal conditions, the ZIF-8 30 min -MXene/Nylon composite membrane achieved outstanding separation performance, with H 2 permeance of 2032.3 GPU and H 2 /CO 2 selectivity of 87.2, surpassing the Robeson upper bound (2008). Importantly, this work provided valuable insights into MOF membrane fabrication on microporous polymer substrates.
✓ 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）