LANGMUIR
·
2026
·
IF 4.4
Zhipeng Su,Xueyin Zhang,Haiwei Li,Pingchuan Sun,Tiehong Chen
Desilication by alkali etching is generally used to prepare hierarchical zeolites to enhance their mass transfer properties; however, for high Si/Al ratio zeolites, the alkali etching would greatly reduce the framework crystallinity or even give rise to amorphous product. Though organic amines have been used as additives during alkali etching to protect the microporous framework, the problems of toxicity, volatility, high cost, and nitrogen-containing wastes induced by organic amines would hinder their scalable application. In this study, we provide a different viewpoint on the protective mechanism of zeolite micropores during alkali etching, and the attention is focused on the framework polarity, which has not been studied before. We develop a hydrophobic nitrogen-free organic molecule (such as acetophenone)-protected alkali etching method to prepare hierarchical zeolites with high crystallinity and high porosity, and the prepared hierarchical Y zeolites showed enhanced performance in the catalytic cracking of bulky molecules. This method is based on the principle that the hydrophobic micropores of high-silica zeolites could adsorb hydrophobic organic molecules from aqueous solution, which would fill in the zeolite micropores and prevent excessive OH– damage to Si–O–Si bonds. Thus, our method is facile for scalable production without the tedious pretreatment of vacuum dehydration, organic amine impregnation, and drying before alkali etching. Furthermore, concerning the characteristics of a nitrogen-free process and low volatility, using acetophenone as a protective agent would reduce the cost and avoid nitrogen-containing wastes in practical applications.
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LANGMUIR
·
2026
·
IF 4.4
Tingyu Li,Yixin Wang,Li Hao,Yiping Sun,Shujuan Liu,Qian Ye,Feng Zhou
Herein, nitrogen, phosphorus, and fluorine codoped MXene (N,P,F-MXene) was synthesized via thermal treatment using 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM][PF6]) as the doping precursor. Comprehensive characterization confirmed the effective incorporation of nitrogen, phosphorus, and fluorine into the MXene lattice. Tribological testing revealed that N,P,F-MXene demonstrated excellent performance as an additive in lubrication, showing significantly reduced friction and wear. Specifically, it achieved an average COF of 0.109 and reduced wear volume by 62.5% versus the base oil. Furthermore, the N,P,F-MXene-based lubricant exhibited good adaptability under extreme operating conditions, sustaining stable tribological behavior over a broad load, frequency, and temperature range. Notably, its load capacity reached 500 N. Mechanistic analysis indicates that its superior performance originates from the synergistic effects of the physical filling and adsorption of N,P,F-MXene, coupled with the formation of a tribo-chemical film with low shear strength enriched with nitrogen/phosphorus/fluorine compounds and metal oxides in the friction process. This study provides an effective strategy for heteroatom doping of MXene and offers a promising pathway toward high-performance oil-based lubricant additives.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Chen Lin,Mengxin Liu,Yuhui Liu,Xin Su,Xinan Shi,Daocheng Pan
Quantum-sized SnO2 nanoparticles have emerged as a promising electron transport layer (ETL) in quantum dot light-emitting diodes (QLEDs) due to their high chemical stability, wide bandgap, and high electron mobility. However, their excessive electron mobility often leads to charge transport imbalance, thereby limiting the device performance. Herein, we report a p-type doping strategy using Mg2+ ions to modulate the electron transport capability of SnO2 nanocrystals. By varying Mg-doping concentration, we achieve a wide-range tuning of electron mobility and conductivity over nearly 3 orders of magnitude. This suppression of electron transport enables the balanced charge injection in inverted QLEDs. As a result, red-emitting devices incorporating 2.0% Mg-doped SnO2 ETLs exhibit an average external quantum efficiency (EQE) of 19.35% and a peak EQE of 22.04%. This work demonstrates Mg-doped SnO2 nanoparticles as a superior alternative to ZnO nanoparticles for highly efficient and stable QLEDs.
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ACS Nano
·
2026
·
IF 17.3
Yue Chen,Shiqiang Feng,Juan-Feng Zhu,Nuo Yang,Xiangfu Hu,Dan Xu,Yan Wang,Lijun Hu,Haixia Liu,Youzhi Yang,Weigao Xu,Fang Cheng,Lin Wu,Xue-Jun Wu
Symmetrically branched metal nanostructures with intricate structural features and exceptional physicochemical properties demonstrate a significant potential for diverse applications. Nevertheless, achieving precise morphological control over these nanostructures with adjustable dimensions poses a considerable challenge, especially for stellated icosahedrons (STICs) with 20 orderly arranged branches. Here, we present a template replication strategy for the controllable synthesis of metal STICs with various compositions, featuring high yield, uniformity, and adjustable dimensions. The synthesis relies on fine-tuning the reduction kinetics toward heterogeneous nucleation and growth through optimizing the reduction potential of the metal precursors. Notably, the synthesized Au STICs exhibit tunable localized surface plasmon resonances and scattering spectra by varying their sizes as well as profound surface-enhanced Raman scattering (SERS) activity. Electron energy-loss spectroscopy and numerical simulations confirm the symmetrical distribution of their surface plasmon resonances, enabling the polarization-angle-dependent SERS enhancement. Moreover, the resulting magnetic Ni-NiPx STICs exhibit chain-like self-assembly under magnetic fields. This work offers an approach to the rational synthesis of branched nanostructures with complex and intricate architectures that hold significant promise for applications in SERS and catalysis.
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SEPARATION SCIENCE AND TECHNOLOGY
·
2026
·
IF 2.5
Shun Zhang,Wenqi Jiang,Pengna Huang,Xianjin Qi,Yongkui Li
The development of adsorbents that combine high capacity with strong interference resistance remains a challenge for arsenic remediation in near-neutral industrial wastewater. Herein, we designed three functionalized MIL-101(Fe) composites – Si@Fe-MOF, L@Fe-MOF, and Fe/La-MOF – using silica incorporation, layered double hydroxide (LDH) assembly, and bimetallic synergy, respectively. This multi-faceted strategy aimed to overcome the inherent limitations of pristine MOFs, such as insufficient active sites. Under near-neutral conditions (pH = 7), the bimetallic Fe/La-MOF composite exhibited an exceptional adsorption capacity of 1708 mg/g for As(V), with a removal rate of 98.6%. Systematic characterization and modeling revealed that the adsorption process on all composites is governed by chemisorption. Mechanistically, the incorporated components enhance performance through distinct pathways: Si – OH groups provide additional binding sites, while La doping and Fe-La synergy create high-affinity bimetallic centers for selective arsenic complexation. This work provides a theoretical foundation and effective strategies for designing high-performance, stable adsorbents for treating arsenic in complex aquatic environments.
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Advanced Manufacturing-Polymer & Composites Science
·
2026
·
IF 3.3
Xiangyu Liu,Qiumei Chen,Haoen Shi,Bingnong Jiang,Kai Jin
The efficacy of silane coupling agents in polymer nanocomposites is often restricted by limited reactive sites and insufficient physical engagement with the matrix. In this work, a multi-amino covalent organic framework-derived silane coupling agent (COF-SCA) was synthesized via a one-pot solvothermal method to engineer a stable filler–matrix interface. Unlike conventional small-molecule silanes, this macromolecular agent exhibits a porous, amino-rich framework. COF-SCA was applied to functionalize carbon nanotubes (CNTs) and hexagonal boron nitride (h-BN). Structural analysis indicates the formation of a continuous, rough coating on the nanofillers. Mechanical testing shows enhanced load-bearing capability, with tensile strength increases of 23% (CNTs) and 22% (h-BN) compared to APTES-treated systems. This enhancement is attributed to synergistic effects from abundant amino groups and the rigid porous framework.
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LIQUID CRYSTALS
·
2026
·
IF 1.6
Yuxin Wang,Jiaze Gao,Qin Liu,Di Ke,Jifeng Gao,Shuaiyin Ma,Xiaozhi He,Guiyang Yan,Jianshe Hu
In order to synthesise a fluorescent liquid crystal polymer (PL) with thermochromic effect at lower temperatures, allyl glycidyl ether (ME) was graft copolymerised with a fluorescent monomer (FM), a cholesteric monomer (M1), and a nematic monomer (M2) onto a polymethylhydrosiloxane (PMHS) backbone. This PL polymer was subsequently crosslinked with 4,4’-oxydianiline (MF), yielding a fluorescent liquid crystal elastomer (CPL) which exhibits a more ordered arrangement of the liquid-crystal molecules. The molecular structures and mesophase behaviours of the monomers and polymers were characterised by conventional methods, and all polymers were confirmed to meet the design requirements. The liquid-crystalline properties of the polymers before and after crosslinking were established as cholesteric phase by polarised optical microscopy (POM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), which also revealed excellent thermal stability, mesophase behaviour and thermal properties. Fluorescence spectroscopic analysis and imaging revealed that the polymer’s emission intensity is highly temperature-dependent. The cholesteric liquid crystal polymers exhibit different fluorescence intensities under UV irradiation at different temperatures, and the fluorescence is temperature-reversible. The two series polymer shows the expected dual effects of fluorescence and selective reflection at low temperatures, which have been fully verified experimentally.
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Catalysts
·
2026
·Vol. 16
·期 3
·261
·
IF 4.5
Yue Gao,Xuan Qi,Hao Yan,Danfeng He,Junfeng Zhang
A flexible polyionic liquid (PIL) nanofiber membrane-supported phosphomolybdic acid catalyst (PM-PIL) was fabricated via stepwise chemical transformation of polyacrylonitrile (PAN) nanofiber membranes. The nitrile groups of PAN were converted into pyridine units, followed by quaternization and anion exchange with phosphomolybdic acid (PMo), resulting in a polyionic liquid membrane with uniformly immobilized PMo species. Benefiting from its nanofibrous architecture and ionic liquid characteristics, the PM-PIL membrane simultaneously acts as a heterogeneous catalyst and a Pickering emulsion stabilizer, enabling efficient interfacial catalytic oxidation desulfurization. The PM-PIL membrane exhibited excellent catalytic performance toward dibenzothiophene (DBT) oxidation in an H2O2-based model oil system. Under optimized conditions (60 °C, O/S = 150:1), more than 90% DBT removal was achieved within 90 min, and complete desulfurization was obtained within 2 h. Compared with phosphomolybdic acid and poly(pyridine), the PM-PIL membrane showed markedly enhanced activity and stability, maintaining over 90% efficiency after six cycles. Product analysis confirmed selective oxidation of DBT to dibenzothiophene sulfone. This work provides a robust and recyclable membrane-based catalytic platform for efficient oxidative desulfurization.
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Xiaoman Li,Yiming Wang,Xue Yang,Chaojin Jiang,Lulu Kong,Honghan Fei,Xueling Song
Organolead halide coordination polymers have emerged as promising photocatalysts owing to their attractive photophysical properties and structural tunability. However, organolead bromides typically exhibit limited photocatalytic performance due to their generally narrow light absorption range and inefficient carrier mobility. To overcome these issues, we designed and synthesized a robust layered organolead bromide coordination polymer templated by the squaric acid ligand featuring short carbon chains and broad near-UV absorption. It achieves visible light absorption and high charge separation efficiency, in contrast to the two reported lead bromide analogues with large interlayer spacing. Upon exposure to AM 1.5G simulated sunlight, the hybrid bromoplumbate exhibits enhanced photocatalytic activity for CO2–CO conversion, with high product selectivity and cycling stability. Moreover, the photocatalytic CO2 reduction performance is further promoted by in situ incorporation of trace Ag nanocrystals as reductive cocatalysts for suppressing carrier recombination, prolonging charge lifetime, and reducing free energy for the *COOH key intermediate. This work underscores the critical role of coordination chemistry in modulating the relationship between the structure and property of crystalline materials.
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ACS Applied Electronic Materials
·
2026
·
IF 4.7
Mingzhi Jiao,Liangsong Duan,Jiade Zhang,Wei Peng,Chenyu Wen
To address the demands for efficient detection of combustible gas, such as hydrogen (H2), ethylene (C2H4), and acetylene (C2H2), in complex gas environments relevant to environmental monitoring, industrial safety, and smart homes, we developed zinc oxide (ZnO) gas sensors featuring bimetallic surface decoration with palladium (Pd) and gold (Au). Electron microscopy reveals the surface morphology of the sensing film and Pd/Au codecoration conformation, while X-ray photoelectron spectroscopy supports that codecoration modulates the distribution of surface oxygen species on ZnO. Gas sensing measurements demonstrate that Pd/Au decoration enhances both sensitivity and selectivity toward H2, C2H4, and C2H2. Specifically, a sensor decorated with 0.6 nm Pd and 2.3 nm Au exhibits a 178-fold increase in response to 160 ppm H2. Furthermore, by combining particle swarm optimization algorithm for feature selection with a support vector machine classifier, a recognition accuracy of 96.07% is achieved across seven different pure and mixture gas samples. This study presents a high-accuracy ZnO-based gas sensing platform optimized through both material engineering and machine learning algorithm, providing a reliable solution for real-world applications in industrial safety and environmental monitoring.
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LANGMUIR
·
2026
·
IF 4.4
Yifang Liang,Hanguang Wu,Nuo Chen,Tiantian Sun,Ming Tian,Rui Wang
It is highly desired to develop continuous and scalable fabrication strategies for fibrous supercapacitors (FSCs) with helically structured electrodes, and the comprehensive performance, including long-term stability and operational safety, of the obtained devices is simultaneously desired to be optimized. In this work, we develop a one-step rotating microfluidic spinning technique for continuously preparing the CMC@MXene/PEDOT:PSS/CMC fibrous supercapacitor (CMC@MPC FSC) with helical structured electrodes and integrated electrode–electrolyte interfaces, which ensures the excellent ion migration capability, long-term stability, and operational safety of the obtained FSC. Therefore, the CMC@MPC FSC presents high energy storage capabilities including high volumetric capacitance (6.21 F cm–3), high energy density (3.35 mWh cm–3), high power density (50.01 mW cm–3), high rate capability (83.90% capacitance retention at 50 mA cm–3), and excellent electrochemical durability and stability, endowing it with great potential for wearable energy storage application, especially in the energy harvesting systems where high charge–discharge speed and frequency are required. This work presents a scalable, one-step approach for fabricating high-performance, all-in-one FSCs and lays the foundation for the next generation of flexible, integrated energy storage systems in smart textile technologies.
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ENVIRONMENTAL TECHNOLOGY
·
2026
·
IF 2.2
Zhenghang Lai,Yanping Ding,Yu Yang,Lei Cheng,Jingwen Wang,Yong Liu
The Fenton-like application potential of MoS2 has recently attracted widespread interest in advanced oxidation processes. This study utilized natural molybdenite ore as the source of MoS2, and the Fenton-like reactivity of molybdenite was further enhanced by dropping Fe(III) ions on the basal planes of MoS2. EDS elemental analysis and XPS results suggest that Fe species were successfully anchored on the molybdenite surface, which exhibited exceptional efficiency in peracetic acid (PAA) activation. The Fe-molybdenite/PAA system achieved 83.2% degradation of sulfamethazine (SMT) within 30 min, and the reaction efficiency by Fe-molybdenite was 3.3 times higher than that of the unmodified molybdenite. HO• and Fe(V) were identified as the reactive species (RSs) during PAA activation, and SMT was degraded by these RSs. Increasing Fe-molybdenite and PAA dosages enhanced SMT degradation, with optimal performance observed at pH 4. Hydroxylation, nitrification, Smiles rearrangement and radical recombination reactions were involved during SMT degradation. Tetracyclines, dyes and other sulphonamide antibiotics could also be well degraded by Fe-molybdenite/PAA. This study elucidates fundamental design principles for engineering Fenton-like catalysts from natural mineral precursors.
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