NANO
·
2025
·
IF 1.1
Jinglin Wang,Shikun Chen,Yuntian Wei,Shuguang Cai,Xueqing Xiao,Xingfang Huang,Chan Zheng
Due to their autonomous and controllable motions, micromotors show excellent potential for practical application to environmental remediation. We used natural pine pollens (PPs) as bio-templates (ZIF-67@PP) to develop distinctive “Mickey Mouse”-shaped ZIF-67-nanoparticle (NP)-based bubble-mediated self-propelled micromotors for dynamically degrading tetracyclines (TCs) in water. The as-prepared micromotors possessed a unique core–shell structure comprising a PP core and a ZIF-67 NP shell and were effectively self-propelled by oxygen ( O 2 ) bubbles generated by the ZIF-67-catalyzed decomposition of hydrogen peroxide ( H 2 O 2 ) . Additionally, the ZIF-67@PP micromotors’ velocity was further enhanced by optimizing the ZIF-67 NP loading and H 2 O 2 concentration. Meanwhile, the outer ZIF-67 NP shell effectively adsorbed and degraded TCs, enhancing the TC degradation efficiency of the dynamic micromotors by approximately 2.7 times compared to that of the static nonmicromotor counterpart, mainly because of the synergy of the enhanced self-motion-mediated localized mixing and outstanding adsorption and catalytic oxidation of ZIF-67 NPs. After the systematic optimization of the treatment conditions, an initial ZIF-67@PP micromotor concentration of 2 0 mg ⋅ L − 1 degraded more than 90% of the TCs within 10 min. Furthermore, the introduction of magnetic Fe 3 O 4 NPs enabled the remote magnetic control of the movement direction and magnetic recycling of the micromotors. Our work not only offers a facile strategy to incorporate a versatile family of metal–organic frameworks into the design of bubble-mediated self-propelled micromotors but also demonstrates the practical application potential of micromotors possessing distinctive morphologies for removing antibiotics from aquatic ecosystems.
研究领域:
环境修复
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纳米材料
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微/纳米机器人
·
水处理
·
催化
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金属有机框架材料（MOFs）
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DOI
高影响因子
DYES AND PIGMENTS
·
2026
·
IF 3.9
Baoyi Chang,Pengcheng Zhang,Lipiao Bao,Ziyu Qin,Xing Lu
Defect-engineered ZIF-67/BC composite achieves BET surface area of 747.0 m 2 /g. • Sensor sensitivity is 4.56-fold higher than conventional paper-based counterparts. • High selectivity for C 2 H 4 with stable response across 10-80% RH humidity range. • Colorimetric sensors enable full-cycle visual monitoring of fruit ripening stages. The development of highly sensitive ethylene (C 2 H 4 ) colorimetric sensors is often hindered by the low gas adsorption capacity of conventional substrates. Herein, we report a highly sensitive colorimetric sensor based on a defect-engineered ZIF-67/bacterial cellulose (Def-ZIF-67/BC) composite. Nitrogen adsorption analysis revealed that the integration of ZIF-67 and subsequent defect induction elevated the BET surface area from 83.9 m 2 /g (pristine BC) to a remarkable 747.0 m 2 /g, providing an 18.3-fold increase in adsorption capacity compared to paper-based substrates. The interconnected 3D nanofibrillar network of the Def-ZIF-67/BC composite provides a robust platform for efficient signal transduction. The sensor utilizes PdCl 2 -catalyzed Wacker oxidation of C 2 H 4 . Water-induced defect engineering enhanced the apparent ethylene-triggered colorimetric response, while PdCl 2 was essential for signal generation. Through systematic optimization of the catalyst-to-dye ratio, the TB and MR + BG sensing elements yielded maximum Euclidean distance values of 137 and 140, respectively, upon exposure to 50 ppm C 2 H 4 . This synergistic combination of physical adsorption enrichment and chemical signal amplification results in a 4.56-fold enhancement in sensitivity over traditional paper-based substrates, demonstrating the efficacy of defect engineering in trace gas detection. Performance evaluations confirmed that the sensor is highly selective toward C 2 H 4 and remains stable under fluctuating humidity levels due to the structural advantages of the BC substrate. Monitoring of climacteric fruits demonstrated the ability of the sensor to distinguish unripe, ripe, and overripe stages through clear colorimetric transitions. This work provides a robust and cost-effective solution for non-destructive quality monitoring in intelligent food supply chains. Download: Download high-res image (427KB) Download: Download full-size image
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高影响因子
Materials Today Catalysis
·
2026
·
IF 10.1
Yuhang Li,Ke Qi,Huiying Zhou,Xu Zhai,Changhong Yang,Weimin Fu,Yuanlin Fu,Yu Fu
The mechanism for the NORR performance differences of varying Ni/Co ratios in Ni x Co y -LDH NF was revealed. • Ni 50 Co 50 -LDH NF can achieve a maximum NH 3 yield rate of 22.8 mg h −1 cm −2 with extremely low concentration NO. • We realized the efficient extraction and valorization of the produced ammonia. Utilizing electrocatalytic methods to efficiently convert harmful nitric oxide into derivatives of ammonia is undoubtedly a very economical way. Herein, we synthesized a series of different metal ratio Ni x Co y -layered double hydroxide nanoflower (Ni x Co y -LDH NF) material derived from the metal-organic framework (MOF), which can convert low concentration NO into ammonia. Among them, Ni 50 Co 50 -layered double hydroxide nanoflower can achieve a NH 3 yield rate of 4.33 mg h −1 cm −2 with a Faradaic efficiency of 74.6% in a H-cell. Notably, the yield can increase to 22.8 mg h −1 cm −2 at −0.4 V (V vs.RHE) with a current density over 250 mA cm −2 in a gas diffusion electrode. The post-electrolysis electrolyte was then collected and a membrane permeation device was used to purify the free ammonia into ammonium chloride. Our work investigated the influence of different proportions of Ni on the nitric oxide reduction reaction performance of layered double hydroxide materials and provided a new strategy for efficient NO conversion catalyst design. Download: Download high-res image (87KB) Download: Download full-size image
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高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Run-Ze Zhu,Lu-Lu Li,Yang-Sheng Tian
The design and fabrication of high-efficiency, cost-effective multifunctional air nanofiber membranes are critically important for addressing the growing challenge of global particulate matter pollution. This study presents a structural optimization strategy based on the incorporation of porous functional nanoparticles to develop high-performance air filtration membranes. By precisely controlling the ZIF-67 loading ratio and spinning time, a hierarchical fiber network with a bimodal diameter distribution was constructed, enabling stable immobilization of the porous nanoparticles within the fibrous matrix. The resulting composite membrane achieved filtration efficiencies of 99.69% for PM 2.5 and 99.72% for PM 10 , with a low pressure drop of only 72 Pa. Its quality factor is 1.8 times higher than that of the pure PAN membranes. The membrane demonstrates excellent air permeability, UV resistance, and long-term stability. It maintains a filtration efficiency above 97.12% at a high flow rate of 50 L/min, with no noticeable performance decline after 30 days of continuous use. This fabrication method offers advantages such as simple operation, controllable processes, and scalability for mass production. The resulting composite membrane effectively balances filtration efficiency and breathability, making it a promising filter material for personal protective equipment and indoor air purification systems.
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DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Sisi Yao,Jiawei Han,Wenjun Zhang,Dengkang Guo,Shenjie Han,Yun Lu,Jingpeng Li
Developing efficient catalytic hydrogenation microreactors with minimal catalyst loading yet high active-site density for treating concentrated organic pollutants remains challenging. Herein, a facile room-temperature method is presented to stabilize Pd single-atom catalysts (SACs) within ZIF-67 crystals during their formation, aiming to fabricate an efficient, low-loading hydrogenation catalytic microreactor (Pd@Z-P/b CMR). ZIF-67 is constructed into polydopamine (PDA)-modified bamboo microchannels under flow conditions, utilizing preimmobilized Co 2+ seeds in PDA. Despite an ultralow Pd loading (0.0014 wt.%), the Pd@Z-P/b CMR featuring atomically dispersed Pd─N 4 sites in ZIF-67 considerably outperforms its Pd nanoparticle–loaded counterpart (Pd 0.0035 wt.%) in continuous-flow hydrogenation, demonstrating superior robustness and maximized Pd utilization with 94.3% conversion efficiency for saturated 4-nitroaniline over 10 d and 97.5% conversion efficiency for gram-level methylene blue (1.0 g L −1 ) over 5 d. Crucially, it exhibits consistent, high performance in real environmental water samples. The high surface area and porosity of ZIF-67 stabilize the Pd SACs, enhance dispersion, and ensure accessibility. Simultaneously, the Pd─N 4 configuration facilitates electron transfer and optimizes hydrogen binding energy, dramatically boosting the catalytic activity. This work provides a novel strategy for room-temperature SAC synthesis and the effective treatment of high-concentration organic pollutants for sustainable wastewater remediation.
研究领域:
环境催化
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材料科学
·
纳米技术
·
可持续化学
·
化学工程
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DOI
PubMed
高影响因子
JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Xiangyu Jia,Xiaoming Li,Shiying Li,Kai Yuan,Xiaoqing Gao,Shanhui Zhu,Mei Dong,Weibin Fan
Metals embedded nitrogen-doped carbon (M/NC) materials have garnered substantial attention due to the catalytic active centers provided by their transition metals. Here, the ZIF-67 derived Co/NC hollow structure catalyst (Co/NHC-4) exhibited remarkable performance in the hydrogenation of biomass-based 5-hydroxymethylfurfural (HMF) to valuable 2,5-dihydroxymethylfuran (DHMF). Under mild conditions of 60 °C and 2 MPa H 2 , the conversion of HMF reached nearly 100 %, with DHMF selectivity >99 %. Through the integration of advanced characterization techniques, such as TEM, XPS, XAFS, Raman spectroscopy, vapor adsorption curve, H 2 -TPD and in situ FTIR spectroscopy, it was demonstrated that the superior hydrogenation performance of hollow-structured catalysts primarily stems from unique morphology. Specifically, the hollow morphology facilitates the adsorption and diffusion of HMF on Co surface, which substantially enhances the hydrogenation efficiency. DFT calculation reveals the preferential parallel adsorption geometry of HMF and the energetically favorable hydrogenation pathway.
研究领域:
催化化学
·
材料化学
·
可持续能源
·
生物质利用
·
纳米材料
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xue Bai,Li-Ping Liu,Yi-Fei Xu,Yu Sun,Wan-Hong Sun,Zhe-Peng Deng,Yin-Xia Sun,Li Xu
Photocatalytic nitrogen reduction reaction (PNRR) provides a sustainable pathway for green ammonia synthesis, but still faces challenges such as high photogenerated carrier complexation rate and difficulty in N 2 activation. In this study, ZIF-67@Co-TCTB (ZC-250) MOF-on-MOF composites were prepared by liquid-phase synthesis, aiming at dual active site synergy and interfacial charge behavior modulation to enhance visible light nitrogen fixation performance. Structural and compositional analyses (FT-IR, XRD and XPS) indicate that the composite possesses both Co–N and Co–O coordination environments, and introduces N–Co and C O active sites on the surface, which effectively enhances the N 2 adsorption and activation capacity. Diffuse reflectance spectroscopy (DRS), Mott–Schottky (M–S) and steady-state photoluminescence (PL) characterization revealed that the photogenerated electrons migrated from ZIF-67 to Co-TCTB, which facilitated the interfacial charge separation, and then efficiently reduced the surface adsorbed N 2 to NH 4 + . Under the condition of no sacrificial agent, the NH 4 + yield of ZC-250 was as high as 199.73 μmol g −1 h −1 , which was an 8-fold enhancement over that of pure ZIF-67, and showed good stability after four cycles. This study provides a new material design strategy for the construction of MOF-based nitrogen fixation photocatalysts with synergistic active centers and regulated interfacial electronic behavior.
研究领域:
光催化
·
材料科学
·
固氮
·
金属有机框架材料（MOFs）
·
可持续能源
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产品关联
DOI
高影响因子
Membranes
·
2025
·Vol. 15
·期 7
·197
·
IF 3.6
Jiale Zhang,Huixin Dong,Fei Guo,Huijun Yi,Xiaobin Jiang,Gaohong He,Wu Xiao
In this work, HNTs@ZIF-67 composites were synthesized using the in situ growth method and incorporated into 6FDA-TFMB to prepare mixed-matrix membranes (MMMs). Scanning electron microscope (SEM) and transmission electron microscope (TEM) proved that the HNTs@ZIF-67 composite not only retained the hollow structure of HNTs, but also formed a continuous ZIF-67 transport layer on the surface of HNTs. The results of gas permeability experiments showed that with the increase in HNTs@ZIF-67 incorporation, the He permeability and He/CH4selectivity of MMMs showed a trend of increasing first and then decreasing. When the loading is 5 wt%, the He permeability and He/CH4selectivity of MMMs reach 116 Barrer and 305, which are 22.11% and 79.41% higher than the pure 6FDA-TFMB membrane. The results of density functional theory (DFT) and Monte Carlo (MC) calculations reveal that He diffuses more easily inside ZIF-67, HNTs and 6FDA-TFMB than CH4, and ZIF-67 shows larger adsorption energy with He than HNTs and 6FDA-TFMB, indicating that He is easily adsorbed by ZIF-67 in MMMs. Based on experimental and molecular simulation results, the mechanism of HNTs@ZIF-67 improving the He/CH4separation performance of MMMs was summarized. With the advantage of a smaller molecular kinetic diameter, He can diffuse through ZIF-67 on the tube orifice of HNTs@ZIF-67 and enter the HNTs’ hollow tube for rapid transmission. At the same time, He can also be rapidly transferred in the continuous ZIF-67 transport channel layer, which improves the He permeability and the He/CH4selectivity of MMMs.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Guanjian He,Yujiang Fan,Qiang Niu,Gelimei Zhang,Fenghui Wu,Dandan Chen,Chun Lv,Jie He,Haiying Lin,Minjie He
Elemental mercury (Hg 0 ) removal from coal combustion flue gas remains a significant challenge, primarily due to the limited uptake capacity and slow capture rate of commercial sorbents. Herein, the flower-like heterojunctions comprising ZIF-67-derived CoSe 2 uniformly dispersed in the layered g-C 3 N 4 (xCoSe 2 -CN), which were innovatively synthesized through an in-situ growth method followed by thermal selenization. The optimized 4CoSe 2 -CN exhibited exceptional Hg 0 capture performance, with an equilibrium capacity of 32.44 mg/g and an average rate of 10.47 μg/g/min, surpassing the most reported heterojunction materials. Furthermore, the satisfactory Hg 0 removal efficiency (>99 %) was maintained over a broad temperature window (25–140 °C) and under complex flue gas components. Notably, the sorbent demonstrated excellent recyclability, sustaining an average Hg 0 capture rate exceeding 90 % throughout five consecutive adsorption-regeneration cycles. The superior performance primarily originated from the heterojunction structure and the presence of under-coordinated selenide (Se 2 2− ). Interfacial electron redistribution modulated the electronic structure of CoSe 2 , inducing an upshift of d/p band centers and a reduced ∆ d-p band center gap, thereby significantly enhancing Hg 0 oxidation capability. Moreover, the Se 2 2− sites functioned as the dominant active centers for oxidizing Hg 0 to Hg 2+ and as binding sites for Hg 2+ to form HgSe. This work proposes an innovative strategy for designing MOF-derived heterojunction sorbents with modulated electronic structures to enable efficient Hg 0 capture.
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DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2026
·
IF 7.7
Shan Cheng,Ning Wang,Qingfeng Sun,Jingyao Feng,Qingguang Bao,Zhenghui Liu,Xigao Jian,Nan Li
This study provides a novel strategy for improving the interfacial properties of advanced thermoplastic composites. Metal-organic framework (MOF) materials exhibit significant potential in enhancing the interfacial properties of composite materials due to their special structure and extremely high specific surface area. However, existing introduction methods relying on pre-acidification treatments can impair the mechanical properties of carbon fibers (CFs) and lead to issues such as uneven growth of MOFs. This paper utilizes resveratrol (RES) in reaction with hexachlorocyclotriphosphazene (HCCP) and bisphenol S (BPS) to construct a polyphenol cross-linked coating on the surface of CFs. The coating provides excellent heterogeneous nucleation sites for ZIF-67 without the need for pre-acidification, successfully enabling the loading of MOF on the fiber surface. Compared to unmodified composites, the interlaminar shear strength (ILSS) and flexural strength of CF@ZIF-67/ polyphthalazine ether sulfone ketone (PPESK) increased by 32.44% and 29.62%, respectively. The storage modulus reached 42 GPa, and the glass transition temperature rose to 298°C. Fracture morphology analysis further revealed that the failure mode shifted from interface debonding to resin cohesive failure, demonstrating a substantial enhancement in interfacial bonding.
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Xiaoling Zuo,Pei Nian,Yixuan Zhu,Guisen Yang,Xingrui Li,Yingfei He,Yibin Wei
Despite showing great potential in C 3 H 6 refinement, controllable synthesis of pressure-resistant ZIF-67 membranes with high propylene/propane (C 3 H 6 /C 3 H 8 ) separation performance remains very challenging. In this work, we prepared robust tubular ZIF-67 membrane for efficient C 3 H 6 /C 3 H 8 separation via a highly active seeding-induction strategy. Combination of Ag complex-loaded ZIF-8 nanoparticle seed layer and the ZnO nanocrystal layer enabled abundant heterogeneous nucleation and high-affinity π-complexation interaction with C 3 H 6 , the Ag(I)-incorporated ZIF-67 membrane exhibited enhanced C 3 H 6 permeance of 1.1 × 10 −9 mol·m −2 ·s −1 ·Pa −1 and C 3 H 6 /C 3 H 8 separation factor of 50, which were 45 and 1.3 times higher than that of parent ZnO induced ZIF-67 membrane. The obtained tubular Ag(I)-incorporated ZIF-67 membranes demonstrated a steady C 3 H 6 /C 3 H 8 separation factor under elevated feed pressure (1–7 bar) owing to the robust microstructure. Furthermore, the present ZIF-67 membrane exhibited outstanding long-term durability over 80 days. Thus, this work provides a great potential of the robust ZIF-67 membrane toward reliable separation of C 3 H 6 /C 3 H 8 mixture.
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DOI
高影响因子
Materials Today Sustainability
·
2025
·
IF 7.9
Bing Liu,Qiushi Sun,Meng Sun,Shuang Liu,Hao Wu
As the need for enhanced energy efficiency and the use of renewable energy increases, polyethylene glycol (PEG), a crucial element in phase change materials (PCMs), has gained considerable focus in the areas of temperature control and energy storage. Nevertheless, PEG faces leakage and undesired light absorption problems in practical applications. In this study, melamine foam (MF) is utilized as an encapsulation material in an attempt to tackle the leakage problem. ZIF-67 is incorporated onto MF by in situ growth, followed by high-temperature carbonization to prepare a hierarchical porous carbon, which further enhances the absorbance of phase change composite (PCC). The crystallization of the prepared PCCs is in the range of 157.9-170.3 J/g. The photo-thermal conversion rate of PCC is 92.65%, and the thermal conductivity is 0.38 W/(m∙K). In conclusion, the problems of PEG leakage and low light absorption were solved by carbonized porous encapsulation technique and in situ growth of ZIF-67, which enhanced the solar-thermal energy conversion of storage and PCCs.
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DOI
高影响因子
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