Nanoscale
·
2026
·
IF 5.2
Yutong Shi,Zheyan Tang,Hongwei Zhao,Pengyi Sun,Li-Xiang Li,Haifei Liu,Jingang Zheng,Lin Tao,Han Zhang,Fang Di,Sun Chengguo,Zhihao Yao,Yanzhou Qin,Baigang An
The carbon supports employed in oxygen reduction reaction (ORR) catalysts frequently exhibit crumpled, curled, or other curved morphologies-features. The local microenvironment generated by such curved interfaces and its impact on the electronic structure of active sites as well as reaction kinetics, remain to be studied. Herein, the finite element method was employed to elucidate the evolution of the local catalytic microenvironment during the pyrolysis of ZIF-67 from the perspective of geometric distortion, the results revealed that moderate interfacial curvature can significantly enhance the local electric field strength and promote O 2 enrichment. Guided by the simulation results, MOF-derived carbon with an optimal curved configuration was constructed via control of the pyrolysis temperature. After etching, metal ion adsorption, and H 2 reduction, MOFderived carbon materials loaded with PtCo alloy were obtained (PtCo/NCs). As expected, the PtCo/NCs-900 sample with a moderately curved interface exhibited outstanding ORR performance, with a half-wave potential of 0.831 V, and 91.7% activity retention after 50000 s. Density functional theory calculations demonstrated that the curved interface in PtCo/NCs-900 induces electron redistribution, shifts the d-band center of Pt and optimizes *OH desorption behavior, thereby lowering the O 2 diffusion barrier, facilitating electron transfer, and ensuring sufficient O 2 supply.As an air-cathode catalyst, PtCo/NCs-900 sample delivered a peak power density of 159 mW cm -2 and a specific capacity of 837 mAh g -1 Zn , demonstrating its potential for practical energy applications.
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高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Xiangyu Liu,Xiaohe Tian,Xinru He,Haishan Huan,Yueyangchao Yu,Tianhe Gu,Xinting Liu,Haomiao Liu,Jianing Tan,Xiangyi Zhang,Qing Li,Shaofei Wang
Hydrogen purification is essential for the transition to a clean energy economy, yet the practical application of membrane technology remains limited by the challenge of achieving high gas separation performance under industrial conditions. Herein, we report a facile layer-by-layer spray-coating approach to fabricate sandwich-structured membranes comprising CuBDC metal–organic framework (MOF) nanosheets serving as outer layers and ionic liquid (IL, [BMIM][BF 4 ]) as the inner layer. The IL is electrostatically confined within the CuBDC interlayers, effectively sealing non-selective defects while creating strong CO 2 -philic domains that retard CO 2 permeation. The optimized membrane delivers a moderate H 2 permeance over 1904 GPU and an H 2 /CO 2 selectivity of 12.6, surpassing the 2008 Robeson upper bound. Furthermore, process simulation of a two-stage membrane system demonstrates the potential to achieve >98% hydrogen purity with a recovery of 95.39%. With excellent stability over 100 h, this work establishes a scalable and energy-efficient pathway for industrial hydrogen purification.
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高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Yannan Ma,Runzhong Yu,Boxiang Yao,Jiayu Chen,Han Zhang,Liyuan Zhang
A copper metal-organic framework composite nanozyme (Cu-MOF) with peroxidase-like activity was prepared using an improved room temperature method. Cu-MOF can catalyze H 2 O 2 to release (•OH), thereby oxidizing the colorless chromogenic substrate 3,3′,5,5′-tetramethylbenzidine (TMB) into a blue oxidized product (oxTMB), which has a maximum UV absorption peak at 652 nm. Nicosulfuron can regulate the electronic balance of the redox pair (Cu 2+ /Cu + ) on the Cu-MOF surface, thereby enhancing its peroxidase activity and promoting the deepening of the TMB blue color. Based on this principle, a colorimetric detection method for nicosulfuron was established. The linear range of this method is 0.2–10 μg/mL −1 , and the detection limit is 0.02 mg/kg. This method has been applied for the detection of nicosulfuronin corn samples, with recovery rate ranging from 90.88% to 117.33%, and all relative standard deviation being less than 4%.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·123181
·
IF 7.5
Sheng Tian,Wenhao Liu,Yulun Nie,Chao Yang,Jianbo Shi
Conventional Mn 2 O 3 catalysts, typically synthesized via co-precipitation using inorganic precursors, exhibit satisfactory peroxymonosulfate (PMS) activation efficiency depending on their structure and Mn valence. However, the interplay between pore architecture and intrinsic activity remains poorly understood, limiting rational design of Mn 2 O 3 . Herein, a series of Mn 2 O 3 catalysts with tunable pore sizes (1.6–16.2 nm) and Mn valence states were synthesized via pyrolysis of three distinct Mn-MOF precursors (Mn-BDC, Mn-MOF-74, Mn-BTC) at different temperatures. Among eight MOF-derived Mn 2 O 3 , BDC-400 with the largest pore-size derived from Mn-BDC calcined at 400℃ demonstrated superior performance, achieving 93.5% sulfamethoxazole (SMX) removal via PMS activation. Its degradation rate constant (0.0237 min⁻¹) was 1.45–3.34 times higher than those of catalysts with smaller pores (ranging from1.6–12.6 nm). Counterintuitively, multiple linear regression identified pore size, not Mn(III) content, as the dominant performance descriptor (β = 0.784). This is demonstrated as a pore-size-sieving effect by HA interference experiments and contact angle measurements: larger pores (e.g., 16.2 nm in BDC-400) drastically reduce mass transfer barriers for PMS/SMX, facilitating their access to the Mn(III)-enriched confined interior and thereby maximizing radical (SO₄•⁻/•OH) generation. This work shifts the design paradigm, demonstrating that engineering pore architecture to mitigate diffusion limitations is as critical as optimizing active sites for developing high-performance catalysts.
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高影响因子
SusMat
·
2026
·Vol. 6
·期 4
·e70092
·
IF 19.2
Junyu Jiang,Jichang Sun,Liansheng Li,Kewei Hu,Pengyu Meng,Tianqi Yang,Wen-Jie Jiang,Qinghua Liang
Constructing artificial coatings on Zn metal anodes represents a promising approach to suppressing interfacial side reactions and enhancing reversibility for stable aqueous Zn metal batteries. Herein, Ce-mediated redox chemistry in Ce-UiO-66 MOF coating was explored to stabilize the aqueous Zn anode. We found that the Ce-UiO-66 coating facilitates multi-stage Zn 2+ desolvation due to its abundant carboxyl groups and an optimal porous structure. Moreover, the Ce 3+ /Ce 4+ redox-induced, abundant vacancies provide numerous zincophilic sites for preferential Zn 2+ adsorption and transport. Crucially, the reversible Ce 3+ /Ce 4+ redox behavior enables significant homogenization of electron/Zn 2+ distributions while accelerating interfacial charge transfer kinetics during repeated Zn plating/stripping. Consequently, a Zn anode with an optimal ∼5 µm Ce-UiO-66 coating achieves exceptional stability, highlighted by an ultralong cycling life exceeding 6000 h at 2.0 mA cm −2 and 1.0 mAh cm −2 , alongside an ultralow polarization voltage of ∼24 mV. High-rate stability over 2800 h is also maintained at 5.0 mA cm −2 and 1.0 mAh cm −2 . This work underscores the great potential of redox-active coatings, specifically leveraging Ce-mediated redox chemistry, to enable highly stable aqueous Zn metal batteries for practical applications.
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高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Yangchen Wang,Ran Fang,Simeng Qi,Guanghui Li,Yi Sun,Ziyi Li,Lizi Yang
Sulfur incorporation modulates the electronic structure of NiFe-MOF-74. • Enhanced OER kinetics with low overpotential and small Tafel slope. • Operando EIS and ATR-FTIR reveal facilitated intermediate evolution. • DFT reveals optimized adsorption energetics via d-band modulation. • Electronic inheritance effect persists after electrochemical reconstruction. Regulating the local chemical environment of transition metal-based electrocatalysts is important for improving oxygen evolution reaction (OER) kinetics, but the relationship among heteroatom modification, electrochemical reconstruction, and the resulting active phase remains difficult to establish unambiguously. Herein, a sulfur-modified low-crystalline NiFe MOF-74 precursor is developed to examine how sulfur-containing species influence the precursor coordination environment and subsequent OER behavior. Structural characterizations support the introduction of sulfur-containing species into the MOF-74-related precursor, accompanied by reduced crystallinity and a lower surface area. The optimized catalyst exhibits enhanced OER activity, delivering an overpotential of 257 mV at 10 mA cm⁻² with a Tafel slope of 63.4 mV dec⁻¹. Operando electrochemical impedance spectroscopy, methanol oxidation reaction probing, and operando ATR-FTIR measurements indicate that sulfur modification affects the electrochemical evolution process from precursor activation to oxygen-containing intermediate conversion. Post-OER XRD, XPS, and TEM mapping support reconstruction into a NiFe (oxy)hydroxide-like phase in which sulfur-containing species remain detectable after reconstruction. Density functional theory calculations based on representative reconstructed NiFeOOH/S-NiFeOOH models suggest that sulfur-associated local perturbation may induce electronic redistribution and reduce the maximum uphill free-energy change of the potential-determining step. These results are consistent with a possible sulfur-assisted evolution process in which sulfur-containing species modify the precursor and remain detectable after electrochemical reconstruction, while their exact role in the reconstructed active phase remains unresolved. Download: Download high-res image (292KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Haoran Shi,Jie Chen,Dongyang Han,Changhui Wang,Wenjun Huang,Jiandong Zhuang,Yan Yu,Xuexia Zhang
Metal-organic framework (MOF)-loaded cellulose aerogels show considerable promise for remediating water polluted by heavy metal ions. However, their practical application has been limited by energy-intensive drying methods and suboptimal performance. Herein, a low-cost, scalable preparation strategy to fabricate a MOF-loaded cellulose aerogel (denoted as b-CAT-Z) via ambient drying, employing bidirectional freezing combined with solvent exchange, without the need for toxic crosslinking agents. Specifically, tannic acid (TA)-modified cellulose nanofibers (CNF) and aramid nanofibers (ANF) form a robust skeleton, while MOFs (ZIF-8) anchored via hydrogen bonding and coordination interactions serve as nanofillers to enhance Pb(II) adsorption. The optimized b-CAT-Z aerogel exhibited an ultra-low density (20.3 mg/cm 3 ) and excellent mechanical properties, with a specific strength of 10.93 kN·m/kg. More importantly, benefiting from the construction of long-range ordered water transport channels, the b-CAT-Z aerogel prepared via bidirectional freezing demonstrates outstanding performance in adsorbing Pb(II), exhibiting a superior adsorption capacity (584.4 mg/g), removal efficiency (97.4%), and adsorption kinetics (reaching equilibrium within 180 min). These properties confer significant advantages over its counterparts prepared by random freezing (441.0 mg/g, 300 min) and unidirectional freezing (514.9 mg/g, 300 min). Remarkably, the b-CAT-Z aerogel still maintains a Pb(II) removal efficiency as high as 80.3% even after six adsorption-desorption cycles. Density Functional Theory (DFT) calculations revealed that the oxygen-containing and imidazole groups in b-CAT-Z strongly bind Pb(II), acting as efficient adsorption sites. The b-CAT-Z aerogel demonstrated favorable recyclability. This work presents an ambient-dried strategy for fabricating high-performance cellulose aerogels, providing valuable insights for designing next-generation heavy metal adsorbents.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Hong-Bin Luo,Kai-Xin Zhao,Xin-Ru Wu,Jiang-Long Chen,Guo-Qin Zhang,Zhi-Xing Han,Yangyang Liu,Xiao-Ming Ren
Zirconium-based metal–organic frameworks (Zr-MOFs) have shown great promise as effective catalysts for the hydrolytic degradation of organophosphorus nerve agents. However, their high catalytic activity was usually observed in aqueous environments or high humidity conditions, challenging their applicability as chemical protective materials. In this study, we developed hydrogel composite membranes integrating Zr-MOF catalysts with multifunctional polymeric components, enabling the efficient solid-phase degradation of the nerve agent simulant, dimethyl-4-nitrophenyl phosphate (DMNP), under ambient conditions (40% relative humidity). These membranes were prepared by embedding MOF-808 within a hybrid polymer matrix composed of poly(1-vinylimidazole) (PVIM) and poly(vinyl alcohol) (PVA). In this rationally designed material, MOF-808 supplies the catalytic sites for hydrolysis, PVA contributes to water retention, and PVIM acts as a nonvolatile base to buffer the reaction environment. The resulting composite membranes demonstrate high catalytic activity and good recyclability for solid-phase DMNP hydrolysis under ambient conditions, surpassing the performance of many previously reported Zr-MOF-based materials under similar conditions. These findings represent a meaningful advancement toward the deployment of Zr-MOFs in practical chemical defense applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xinyin Cai,Yanan Xu,Qinyou An,Yalong Jiang,Ziang Liu,Fangyu Xiong,Wenyuan Zou,Gang Zhang,Yuhang Dai,Ruohan Yu,Liqiang Mai
Magnesium metal batteries have attracted much attention due to the good safety, low cost of magnesium and high theoretical volumetric capacity. However, developing magnesium metal batteries is restricted by large polarization and sluggish kinetics during Mg insertion/deinsertion process. Herein, TiO 2 ultrafine nanocrystals derived from Ti-metal–organic-framework (Ti-MOF) are applied as the cathodes in magnesium metal batteries. Remarkably, an ultralong life of the Mg(s) || TiO 2 battery can be obtained during cycling (capacity retention of 75% after 1000 cycles). On the basis of in-situ XRD characterization and cyclic voltammetry analysis, a high pseudocapacitive performance is found, which results in the high kinetics. Moreover, according to Arrhenius behavior, carbon skeleton in TiO 2 cathode can facilitate ion migration and Faraday reaction, thus improving the magnesium storage performance.
研究领域:
材料科学
·
电化学
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高影响因子
Catalysts
·
2017
·Vol. 7
·期 4
·106
·
IF 3.082
Xiuling Zhang,Zhibin Zhan,Zhuang Li,Lanbo Di
High performance catalysts for carbon monoxide (CO) oxidation were obtained through thermal activation of a CuBTC (BTC: 1,3,5-benzenetricarboxylic acid) metal–organic framework (MOF) in various atmospheres. X-ray diffraction (XRD), X-ray photonelectron spectroscopy (XPS), N2adsorption–desorption measurement, and field emission scanning electron microscopy (FESEM) were adopted to characterize the catalysts. The results show that thermal activation by reductive H2may greatly destroy the structure of CuBTC. Inert Ar gas has a weak influence on the structure of CuBTC. Therefore, these two catalysts exhibit low CO oxidation activity. Activating with O2is effective for CuBTC catalysts, since active CuO species may be obtained due to the slight collapse of CuBTC structure. The highest activity is obtained when activating with CO reaction gas, since many pores and more effective Cu2O is formed during the thermal activation process. These results show that the structure and chemical state of coordinated metallic ions in MOFs are adjustable by controlling the activation conditions. This work provides an effective method for designing and fabricating high performance catalysts for CO oxidation based on MOFs.
研究领域:
材料化学
·
催化化学
·
无机化学
·
多孔材料
·
环境催化
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高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 3
·1-8
·
IF 5.3
Yang Shuning,Tian Li,Song Guanying,Li Huiling,Li Chao,Wu Qian,Shan Xiangyu,Zhao Lun
An electrochemiluminescence (ECL) sensor for determining bisphenol A (BPA) was prepared based on titanium dioxide (TiO 2 ) and Co-MOF. TiO 2 is a co-reaction promoter that amplifies the ECL signal in the Ru(bpy) 3 2+ -trinpropylamine (TPrA) system. When the electrode is modified with Co-MOF the ECL signal is significantly enhanced. This is because Co-MOF can not only be used as a co-reaction accelerator but also as a carrier to adsorb more luminescent substances. Possible mechanisms for amplifying the original signal through the synergistic action of the two substances are investigated. The ECL strength decreases with increasing concentrations of BPA, and the amount of BPA can be determined by the change in ECL signal strength (Δ I ). Under optimal experimental conditions, the linear range of BPA was 2.0 × 10 −10 to 2.0 × 10 −5 M, with a determination limit of 6.7 × 10 −11 M (3 σ / m ). The relative standard deviation (RSD) of the signal for ten consecutive measurements was 1.5%. The sensor can be used to detect BPA in bottled samples with recoveries of 96 to 105%. Graphical
研究领域:
分析化学
·
环境科学
·
材料科学
·
电化学
·
传感器技术
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
·
IF 3.368
Xiang Shen,Bing Yan
A series of luminescent Ln 3+ @bio-MOF-1 (Ln = Eu, Tb, bio-MOF-1 = Zn 8 (ad) 4 (BPDC) 6 O⋅2Me 2 NH 2 (ad = adeninate, BPDC = biphenyldicarboxylate)) are synthesized via postsynthetic cation exchange by encapsulating lanthanide ions into an anionic metal–organic framework (MOF), and their photophysical properties are studied. After loading 2-thenoyltrifluroacetone (TTA) as sensitized ligand by a gas diffusion (“ship-in-bottle”) method, it is found that the luminescent intensity of Eu 3+ is enhanced. Especially, when loading two different lanthanide cations into bio-MOF-1, the luminescent color can be tuned to close white (light pink) light output. Additionally, bio-MOF-1 and Eu 3+ @bio-MOF-1 are selected as representative samples for sensing metal ions . When bio-MOF-1 is immersed in the aqueous solutions of different metal ions , it shows highly sensitive sensing for Fe 3+ as well as Eu 3+ @bio-MOF-1 immersed in the DMF solutions of different metal ion. The results are benefit for the further application of functionalized bio-MOFs in practical fields.
研究领域:
无机化学
·
材料科学
·
分析化学
·
纳米生物技术
·
光物理学
·
配位化学
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高影响因子
危险品化学品经营许可证（带存储）