Langmuir最新文献_第4页

Hierarchically Porous Fe–N–C Electrocatalysts with Accessible Fe-Nx Sites for High-Performance Oxygen Reduction Reaction in Zn-Air Batteries 分级多孔Fe-N-C电催化剂及其可达的Fe-Nx位点用于锌空气电池的高性能氧还原反应

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-06 DOI: 10.1021/acs.langmuir.6c04394

Yankun Wei, Dan Wang, Jinxiang Chou, Ruopeng Li, Wenchang Wang, Naotoshi Mitsuzaki, Zhidong Chen

{"title":"Hierarchically Porous Fe–N–C Electrocatalysts with Accessible Fe-Nx Sites for High-Performance Oxygen Reduction Reaction in Zn-Air Batteries","authors":"Yankun Wei, Dan Wang, Jinxiang Chou, Ruopeng Li, Wenchang Wang, Naotoshi Mitsuzaki, Zhidong Chen","doi":"10.1021/acs.langmuir.6c04394","DOIUrl":"10.1021/acs.langmuir.6c04394","url":null,"abstract":"DevelopingFe–N–C electrocatalysts with high activesite utilization remains a key challenge for the oxygen reductionreaction (ORR), primarily because of the limited accessibility ofFe-Nx sites. Herein, a hierarchically porous Fe–N–C(HP-Fe–N–C) catalyst is constructed via a ZnO-templatedstrategy combined with urea-assisted secondary pyrolysis, enablingthe simultaneous regulation of the pore structure and Fe-Nx site density.The ZnO template governs the formation of mesoporous architectures,and concurrently, the pyrolysis of urea releases gaseous species thatfacilitate the enlargement and interconnection of mesoporous channels.Notably, the balanced micromesoporous structure derived from the ZnOtemplate facilitates efficient mass transport and enhances site accessibility,while urea regulates the nitrogen species to promote the formationof dense Fe-Nx moieties. As a result, the HP-Fe–N–Ccatalyst delivers a high half-wave potential of 0.90 V, along withnear four-electron selectivity and excellent durability. The Zn-airbattery assembled with the HP-Fe–N–C cathode achievesan open-circuit voltage of 1.52 V, a specific capacity of 745.6 mAhg–1, and favorable charge–discharge stabilityexceeding 800 h. This work reveals the balance between hierarchicalporosity and active site density in the Fe–N–C catalystfor the high-performance ORR.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30932–30941"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure-Wettability Relationships on Arrays of Electrodeposited Re-entrant Copper Micromushrooms 电沉积可入式铜微蘑菇阵列的微结构-润湿性关系

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-05 DOI: 10.1021/acs.langmuir.6c05162

Sandesh S. Uttarwar, Hyogyun Roh, Francois Nkurunziza, Aradhana Singh, Joshua M. Spurgeon

{"title":"Microstructure-Wettability Relationships on Arrays of Electrodeposited Re-entrant Copper Micromushrooms","authors":"Sandesh S. Uttarwar, Hyogyun Roh, Francois Nkurunziza, Aradhana Singh, Joshua M. Spurgeon","doi":"10.1021/acs.langmuir.6c05162","DOIUrl":"10.1021/acs.langmuir.6c05162","url":null,"abstract":"Omniphobic antiwetting surfaces could play an essentialrole inenhancing performance in certain nonaqueous electrochemical systems,and a possible route to achieve durable repellency is the scalablefabrication of metallic re-entrant microstructures. This study systematicallyinvestigates the microstructure-wettability relationships of arraysof electrodeposited copper micromushrooms. Singly and doubly re-entrantarchitectures were fabricated using a combination of photolithographyand electrodeposition. The impact of geometric parameters, includingpillar diameter, center-to-center spacing, and overhang width, onthe measured contact angle was evaluated across a range of solventswith varying surface tensions. An optimized singly re-entrant geometrymaximized contact angle for high- and intermediate-surface-tensionliquids but failed to prevent the wetting of low-surface-tension solventslike methanol. Synergistic effects were observed when combining thesemicrostructures with perfluoroalkyltrichlorosilane coatings, whichsignificantly reduced surface energy and enabled repellency for evenlow-surface-tension fluids. While doubly re-entrant structures weresuccessfully fabricated, their rounded cap morphology limited additionalantiwetting benefits compared to singly re-entrant designs. Thesefindings provide design guidelines for developing robust, scalable,and conductive antiwetting surfaces suitable for gas diffusion electrodesand other electrochemical applications.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"31117–31129"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pickering Emulsions with Long-Term Stability from Ultrafine Amphiphilic Benzyl-Modified Silica Nanoparticles 两亲性苯修饰二氧化硅纳米颗粒制备具有长期稳定性的酸洗乳液

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-05 DOI: 10.1021/acs.langmuir.6c03737

Yifeng Gao, Yafei Hu, Yi Ge, Yibo Li, Qi-An Huang, Cécile A. Dreiss, Zonglin Chu

{"title":"Pickering Emulsions with Long-Term Stability from Ultrafine Amphiphilic Benzyl-Modified Silica Nanoparticles","authors":"Yifeng Gao, Yafei Hu, Yi Ge, Yibo Li, Qi-An Huang, Cécile A. Dreiss, Zonglin Chu","doi":"10.1021/acs.langmuir.6c03737","DOIUrl":"10.1021/acs.langmuir.6c03737","url":null,"abstract":"Pickeringemulsions offer superior stability and eco-friendlypropertiesacross multiple industries due to solid particle stabilization atoil–water interfaces. However, the design and synthesis ofultrafine nanoparticles capable of stabilizing Pickering emulsionshave always been a challenging problem. Herein, ultrafine silica nanoparticleswhich have a diameter of 20–30 nm, were prepared based on amicroemulsion method. The ultrafine silica nanoparticles have excellentdispersion properties in water. The benzyl-modified amphiphilic silicananoparticles were synthesized by grafting benzyl groups onto thenanoparticle surface using the Pickering emulsion template methodafter modification with 3-[2-(2-aminoethylamino)ethylamino]propyl-trimethoxysilane.The benzyl-modified silica nanoparticles have excellent interfacialactivity, with a three-phase contact angle close to 90°, andcan reduce the interfacial tension of the kerosene/water system. Theresulting Pickering emulsions stabilized by benzyl-modified silicananoparticles have excellent long-term stability (stable for at least200 days). Additionally, benzyl-modified silica nanoparticles canalso be used as Pickering emulsifiers for soybean oil, sunflower oil, n-hexadecane, and mineral oil, and they exhibit potentialapplication scenarios in fields such as the food and cosmetics industry,catalytic synthesis, and sustained drug release.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30743–30752"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanistic Insights into Alkaline Electrosynthesis of Acetamide over Transition Metal-Doped MoS2: A Comprehensive DFT Investigation 过渡金属掺杂二硫化钼碱性电合成乙酰胺的机理：一项全面的ft研究

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-06 DOI: 10.1021/acs.langmuir.6c04281

Yang-Wen Wu, Xiong Zhang, Song Xu, Xu Su, Han-Wen Wang, Xin-Yue Zhou, Bing Zhang, Li Zhao, Qiang Lu

{"title":"Mechanistic Insights into Alkaline Electrosynthesis of Acetamide over Transition Metal-Doped MoS2: A Comprehensive DFT Investigation","authors":"Yang-Wen Wu, Xiong Zhang, Song Xu, Xu Su, Han-Wen Wang, Xin-Yue Zhou, Bing Zhang, Li Zhao, Qiang Lu","doi":"10.1021/acs.langmuir.6c04281","DOIUrl":"10.1021/acs.langmuir.6c04281","url":null,"abstract":"The electrosynthesis of acetamide in alkaline conditionsvia thecoupling reduction of NO and CO2 establishes a sustainable,efficient platform that enables simultaneous valorization of majoratmospheric pollutant and primary greenhouse gas. However, limitedcatalytic activity and an unclear reaction mechanism in alkaline mediaremain critical challenges. Herein, in this study density functionaltheory (DFT) calculations systematically investigate a series of transitionmetal (TM) doped MoS2 catalysts to elucidate the mechanismof acetamide electrosynthesis. Among the fourth-period TM dopants,Ni–MoS2 exhibits the highest catalytic activity.Electronic structure analysis shows that Ni doping increases interfacialelectron density and promotes surface reactivity. Ni–MoS2 exhibits strong synergistic adsorption of NO (−0.44eV) and CO2 (−0.58 eV), accompanied by enhancedorbital hybridization and interfacial bonding interactions. Reactionpathway analysis reveals that Ni–MoS2 facilitatesthe efficient formation of key intermediates (NH2OH andCH3CHO), shortens the overall reaction pathway, and suppressescompeting side reactions, thereby improving both activity and selectivity.These intermediates subsequently undergo thermodynamically favorableC–N coupling on the Ni–MoS2 surface, enablingefficient acetamide production with a limiting potential of −1.23V. Overall, this work reveals a mechanistic relationship between theelectronic properties of active sites, reaction energetics, and acetamideelectrosynthesis performance, providing theoretical insights for therational design of high-performance electrocatalysts.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30890–30901"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149092478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-Catalyzed Hastelloy Fiber Paper (HAP) Porous Transport Layer for Oxygen Evolution Reaction in Anion Exchange Membrane Water Electrolysis 自催化哈氏纤维纸（HAP）多孔传输层在阴离子交换膜中的析氧反应

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-08 DOI: 10.1021/acs.langmuir.6c04347

Yu-Chen Chang, Shuo-En Yu, I-Chun Cheng, Jian-Zhang Chen

{"title":"Self-Catalyzed Hastelloy Fiber Paper (HAP) Porous Transport Layer for Oxygen Evolution Reaction in Anion Exchange Membrane Water Electrolysis","authors":"Yu-Chen Chang, Shuo-En Yu, I-Chun Cheng, Jian-Zhang Chen","doi":"10.1021/acs.langmuir.6c04347","DOIUrl":"10.1021/acs.langmuir.6c04347","url":null,"abstract":"Hastelloy fiber paper(HAP) can be used as the oxygenevolutionreaction porous transport layer (PTL) without using a catalyst layerin anion exchange membrane water electrolysis. It is combined withRu on nickel fiber paper (NFP) (hydrogen evolution reaction PTL) toform an asymmetric Ru/NFP(−)//HAP(+) single-cell system. Theexperimental results for electrodeposited Co(OH)2 on HAPare also demonstrated for comparison. At 70 °C, the cell delivers725.67 mA cm–2 at 1.8 V under cathode-wet conditionsand maintains 701.34 mA cm–2 under cathode-dry operation.A 5000-cycle accelerated stress test (AST) confirms the good operationalstability of the system under dynamic cycling conditions. In addition,the effect of Co(OH)2 electrodeposition on the HAP anodewas further investigated to show the current density decreases to485.59 mA cm–2 at 1.8 V when operated at 70 °C.The AST stability also degrades with Co(OH)2 deposition.Further analysis indicates that the electrodeposited Co(OH)2 coating may alter the pore structure and surface wettability ofthe catalyst layer, leading to mass-transport limitations at highcurrent densities, including hindered ion transport and inefficientoxygen bubble removal.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30912–30923"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149150904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interfacial Strain and Inversion Domains in Coherent AlBScN/GaN Epitaxial Interfaces 相干alscn /GaN外延界面中的界面应变和反转畴

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-08 DOI: 10.1021/acs.langmuir.6c04368

Morvarid Ghorbani, Alexandre Pofelski, Ian B. Mercer, Jon-Paul Maria, Nabil D. Bassim

{"title":"Interfacial Strain and Inversion Domains in Coherent AlBScN/GaN Epitaxial Interfaces","authors":"Morvarid Ghorbani, Alexandre Pofelski, Ian B. Mercer, Jon-Paul Maria, Nabil D. Bassim","doi":"10.1021/acs.langmuir.6c04368","DOIUrl":"10.1021/acs.langmuir.6c04368","url":null,"abstract":"Nitride ferroelectrics are among the emerging materialswith promisingpotential for a wide range of electronic, optoelectronic, and memoryapplications because of their high remanent polarization, low growthtemperature, and complementary metal-oxide-semiconductor (CMOS) compatibility.Growth of wurtzite-structured nitride ferroelectrics on bottom electrodesor Si substrates has resulted in defective and amorphous interfaces.Epitaxial growth on wide bandgap nitride substrates, such as galliumnitride (GaN), is preferred to achieve sharp interfaces and improvedintegration in semiconductor devices. However, the formation of inversiondomains (IDs) on these substrates degrades the electrical properties.Here, an epitaxial aluminum boron scandium nitride (Al0.78(BSc)0.22N) ferroelectric thin film grown on an n-typeGaN substrate is characterized using scanning transmission electronmicroscopy (STEM) to determine the formation mechanism of IDs. Integrateddifferential phase contrast (iDPC) imaging directly exhibits the Al–Ndumbbell orientation across an inversion domain boundary (IDB) andorientation discontinuity close to the Al0.78(BSc)0.22N/GaN interface. Four-dimensional scanning transmissionelectron microscopy (4D-STEM) strain mapping reveals the role of substrate-inducedpinning in the formation of the IDs. This demonstrates local shearstrain variations along IDBs. This study highlights the importanceof STEM-based techniques in directly correlating the local latticevariations with the polarization and switching behavior of this classof wurtzite ferroelectric films.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30924–30931"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149150930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Engineering Contact Line Dynamics: Predicting Pinning beyond the Point-Defect Approximation 工程接触线动力学：超越点缺陷近似预测钉住

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-07 DOI: 10.1021/acs.langmuir.6c05325

Xin Huang, HengAn Wu, FengChao Wang

{"title":"Engineering Contact Line Dynamics: Predicting Pinning beyond the Point-Defect Approximation","authors":"Xin Huang, HengAn Wu, FengChao Wang","doi":"10.1021/acs.langmuir.6c05325","DOIUrl":"10.1021/acs.langmuir.6c05325","url":null,"abstract":"Hypothesis:Contact line pinning on heterogeneous surfaces governswetting dynamics across scales. While classical theory treats defectsas point-like forces, this assumption breaks down at the nanoscale,where the finite physical width of a defect becomes significant. Wehypothesize that this finite width determines both the pinning strengthand the resulting contact line dynamics, enabling the determinationof key mechanical parameters from the defect geometry and system dimensionswithin the framework of the present model. Simulations: We performlarge-scale molecular dynamics (MD) simulations of a liquid bridgeconfined between two parallel solid plates. The plates move at a constantvelocity in opposite directions along the x-axis.A single, well-defined nanoscale defect with finite width is introducedon the top plate. By systematically varying the defect size and thesystem length, we measure the full two-dimensional contact line morphology,effective contact line stiffness, maximum pinning force, and the completetime-resolved trajectory of the contact line apex xp(t) during the pinningand depinning processes. Findings: A theoretical model is derivedbased on a Gaussian pinning potential, which yields an analyticalcontact line morphology that bridges a parabolic near-field and alogarithmic far-field. The present framework yields an effective globalstiffness K and a closed-form expression for theposition-dependent pinning force Fpinn(xp). These resultsenable a reduced Langevin equation for the apex dynamics, whose predictionsare validated quantitatively by MD simulations without adjustableparameters. Furthermore, by inverting this relationship, we demonstratethat temporal wetting dynamics can be programmed through spatiallyengineered defect patterns.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"31152–31167"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149151116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly Active, Selective, and Stable CoNi Alloy Anchored on Hollow Mesoporous Silica for Furfural Hydrogenation to Tetrahydrofurfuryl Alcohol under Mild Conditions 高活性、选择性和稳定性的CoNi合金锚定在中空介孔二氧化硅上，在温和条件下将糠醛加氢成四氢糠醇

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-12 DOI: 10.1021/acs.langmuir.6c04528

Xiaoyu Zou, Sitong Fu, Fufan Jiang, Hang Liu, Libo Niu

{"title":"Highly Active, Selective, and Stable CoNi Alloy Anchored on Hollow Mesoporous Silica for Furfural Hydrogenation to Tetrahydrofurfuryl Alcohol under Mild Conditions","authors":"Xiaoyu Zou, Sitong Fu, Fufan Jiang, Hang Liu, Libo Niu","doi":"10.1021/acs.langmuir.6c04528","DOIUrl":"10.1021/acs.langmuir.6c04528","url":null,"abstract":"Efficient hydrogenation of furfural (FAL) to tetrahydrofurfurylalcohol (THFA) under mild conditions using non-noble-metal catalystsremains challenging because it requires the hydrogenation of boththe carbonyl group and the furan ring. In this work, a CoNi alloyconfined within hollow mesoporous silica spheres (CoNi@hw-mSiO2) was developed as an efficient catalyst for FAL hydrogenation.Comprehensive characterization results demonstrate the successfulformation of a CoNi alloy with strong electronic interactions, whichis uniformly dispersed within the hollow mesoporous framework. Undermild conditions (100 °C, 2 MPa H2, 2 h), CoNi@hw-mSiO2 achieved a THFA yield of 96.2% with excellent recyclability.The outstanding performance is attributed to the electronic synergyof the CoNi alloy and the structural advantages of the hollow mesoporousstructure. The CoNi alloy provides favorable active sites for thesequential hydrogenation of the C═O and C═C bonds, whilethe hollow structure helps stabilize active species, suppresses metalmigration and leaching, and facilitates efficient mass transfer. Thiswork demonstrates an effective strategy for designing efficient non-noble-metalcatalysts for biomass hydrogenation.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30964–30975"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulating Poly(ether Sulfone) Ultrafiltration Membrane Microstructure via Coagulation Bath Engineering for Enhanced Antifouling Performance 混凝浴技术调制聚醚砜超滤膜微观结构以提高其防污性能

IF 3.9 2区化学

Langmuir Pub Date : 2026-10-20 DOI: 10.1021/acs.langmuir.6c04355

Ping Zhang,Ailin Xie,Ying Wang,Xiaobo Gong,Meng Zhu

{"title":"Modulating Poly(ether Sulfone) Ultrafiltration Membrane Microstructure via Coagulation Bath Engineering for Enhanced Antifouling Performance","authors":"Ping Zhang,Ailin Xie,Ying Wang,Xiaobo Gong,Meng Zhu","doi":"10.1021/acs.langmuir.6c04355","DOIUrl":"https://doi.org/10.1021/acs.langmuir.6c04355","url":null,"abstract":"The coagulation bath plays a decisive role in determining membrane morphology and separation performance during the nonsolvent induced phase separation (NIPS) process. In this study, poly(ether sulfone) (PES) ultrafiltration membranes were fabricated using different coagulation media, including water, ethanol, saturated NaCl solution, and a hydrogel system, to investigate the relationship among phase inversion behavior, membrane morphology, and antifouling performance. The thermodynamic stability and phase separation kinetics of the casting system were analyzed through cloud-point measurements. The membrane morphology, pore structure, wettability, separation performance, and antifouling performance were systematically characterized. The results demonstrated that the coagulation medium significantly influenced the phase inversion pathway and membrane morphology. Rapid demixing in water produced membranes with relatively large pores and low porosity, whereas the hydrogel coagulation bath markedly retarded solvent–nonsolvent exchange, promoting the formation of a dense, uniform sponge-like structure with the highest porosity and the smallest average pore size. The membrane prepared via hydrogel-induced phase separation, designated as P-AG (coagulation bath: agarose hydrogel), exhibited a pure water flux of 73.3 L·m–2 h–1 and a water contact angle (WCA) of 58.75°. It showed the flux recovery ratio (FRR) values of 89.27% and 96.01% for bovine serum albumin (BSA) filtration and emulsion filtration, respectively, and had the lowest irreversible fouling resistance (Rir). Cyclic filtration tests further confirmed its excellent fouling reversibility and long-term operational stability. This work demonstrates that hydrogel-assisted phase inversion provides an effective strategy for tailoring membrane pore architecture. The proposed coagulation bath engineering approach offers new opportunities for developing antifouling membranes toward oily wastewater treatment.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"14 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149218912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decoding Hydrogen-Affinity-Controlled Surface State Evolution in Sn-Based Single-Atom Alloys for CO2 Electroreduction 氢亲和控制的sn基单原子合金CO2电还原表面态演化解码

IF 4.4 2区化学

Langmuir Pub Date : 2026-10-20 Epub Date: 2026-10-06 DOI: 10.1021/acs.langmuir.6c04524

Ruirui Ren, Huitao Fan, Yuhang Wang, Hao Li

{"title":"Decoding Hydrogen-Affinity-Controlled Surface State Evolution in Sn-Based Single-Atom Alloys for CO2 Electroreduction","authors":"Ruirui Ren, Huitao Fan, Yuhang Wang, Hao Li","doi":"10.1021/acs.langmuir.6c04524","DOIUrl":"10.1021/acs.langmuir.6c04524","url":null,"abstract":"The catalytic roleof heteroatom dopants in Sn-based electrocatalystsremains elusive because the dynamic evolution of surface states underelectrochemical conditions is rarely considered. Herein, density functionaltheory calculations combined with pH-dependent microkinetic simulationsreveal that hydrogen affinity governs the evolution of catalytic surfacestates in Sn-based single-atom alloys (SAAs) during electrochemicalCO2 reduction to formate. We demonstrate that hydrogenpreferentially occupies either dopant or neighboring Sn sites dependingon the electronic structure of the dopant and identify simple electronicdescriptors based on the dopant d-band and p-band centers that enablethe screening of preferential H adsorption sites. Surface Pourbaixanalysis further reveals that Sn-based SAAs tend to evolve into nearlymonolayer hydrogen-covered surfaces under practical CO2RR conditions, indicating that the catalytic performance should beevaluated on reconstructed rather than pristine surfaces. By incorporatingdipole–field interactions, explicit potential of zero charge,and pH-dependent electric-field effects into microkinetic modeling,a predictive pH-dependent activity volcano is established, showingexcellent agreement with experimental benchmarking. The resultingframework identifies promising catalysts with distinct pH-dependentactivity windows and, more importantly, establishes hydrogen affinityas a fundamental descriptor governing surface-state evolution andthereby influencing catalytic performance, providing a general strategyfor the rational design of p-block-metal-based electrocatalysts.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"42 41","pages":"30954–30963"},"PeriodicalIF":4.4,"publicationDate":"2026-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149091898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0