Langmuir最新文献_第6页

Interface-Engineered Frustrated Lewis Pairs in the α-Ga2O3/β-In2O3 Heterostructure for Efficient Photocatalytic CO2 Reduction to Solar Fuels α-Ga2O3/β-In2O3异质结构界面工程受挫Lewis对用于光催化CO2高效还原太阳能燃料

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c04023

Taotao Niu, Li Li, Jiaxue Lu, Jun Liang

{"title":"Interface-Engineered Frustrated Lewis Pairs in the α-Ga2O3/β-In2O3 Heterostructure for Efficient Photocatalytic CO2 Reduction to Solar Fuels","authors":"Taotao Niu, Li Li, Jiaxue Lu, Jun Liang","doi":"10.1021/acs.langmuir.5c04023","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c04023","url":null,"abstract":"Efficient photocatalyst development for CO2 reduction remains a critical challenge due to inefficient charge dynamics and poor CO2 activation. This study presents a multiphase interface engineering strategy to construct oxygen vacancy-tailored frustrated Lewis acid-base pairs (FLPs) in α-Ga2O3/β-In2O3 heterostructures. Through a two-step ion-exchange/annealing process, spatially separated In3+ (Lewis acids) and Ga–O (Lewis bases) were isolated at the biphasic interface, enabling the synergistic polarization of CO2 molecules. The optimized FLP configuration enhanced charge separation and prolonged carrier lifetime and achieved a CO production rate of 27.7 μmol·g–1·h–1–2.2 times higher than pristine β-In2O3 without sacrificial agents. Mechanistic studies revealed that FLPs facilitated bidentate carbonate (b-CO32–) formation as a key intermediate, followed by protonation to *COOH and subsequent reduction to CO. This work provides fundamental insights into FLP-mediated CO2 activation and establishes a general paradigm for the design of high-performance photocatalysts via interfacial defect engineering.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"53 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134609","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

Pseudomonas aeruginosa Adhesion and Biofilm Formation on Poly(l-lysine)-Tethered Hydrogels: Synergistic Effect of Substrate Stiffness and Positive Charge Density 铜绿假单胞菌在聚赖氨酸系链水凝胶上的粘附和生物膜形成：底物硬度和正电荷密度的协同效应

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c02709

Shanfeng Wang, Lei Cai, Amanda N. Edwards, Sarah J. Melton, Scott T. Retterer, Mitchel J. Doktycz, Jennifer L. Morrell-Falvey

{"title":"Pseudomonas aeruginosa Adhesion and Biofilm Formation on Poly(l-lysine)-Tethered Hydrogels: Synergistic Effect of Substrate Stiffness and Positive Charge Density","authors":"Shanfeng Wang, Lei Cai, Amanda N. Edwards, Sarah J. Melton, Scott T. Retterer, Mitchel J. Doktycz, Jennifer L. Morrell-Falvey","doi":"10.1021/acs.langmuir.5c02709","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c02709","url":null,"abstract":"Infections associated with antibacterial-resistant Pseudomonas aeruginosa (P. aeruginosa) are the major cause of morbidity and mortality of patients, presenting one of the greatest therapeutic challenges for treatment of community-acquired and nosocomial infections. To develop antimicrobial hydrogel coatings to control the adhesion and subsequent biofilm formation of P. aeruginosa, we have used photo-cross-linked poly(ethylene glycol) diacrylate (PEGDA) hydrogels with varied cross-linking densities and covalently grafted poly(l-lysine) (PLL) at different weight compositions (ϕPLL). Both surface stiffness and positive charge density of the hydrogels were efficiently tuned over a broad range to investigate their effects on two main strains of P. aeruginosa, PA01 and PA14. We found that both number and viability of attached cells were positively correlated with the hydrogel stiffness, leading to thicker and larger coverage of cell colonies at 72 h postseeding on the stiffer substrates. The dependence of both PA01 and PA14 strains on ϕPLL, however, was nonmonotonic. Positive charges from dissociated amine groups in the grafted PLL chains significantly promoted initial adhesion and proliferation of both strains at low ϕPLL and developed into the thickest biofilms on the stiffest hydrogels grafted with ϕPLL of 1–2%. Nevertheless, on the softest hydrogels grafted with PLL at high ϕPLL of 7–10%, the bacteria no longer attached or survived. These results not only improved our fundamental understanding of bacteria-material interactions but also provided a series of PLL-grafted PEGDA hydrogels with controlled stiffness and positive charge density as ideal surface coating materials to prevent bacterial infections.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"18 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145134606","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

Single-Atom Catalysts on GaN Nanowires: A Computational Discovery for Efficient Electrochemical Nitrogen Fixation. 氮化镓纳米线上的单原子催化剂：高效电化学固氮的计算发现。

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c04015

Ling Ren,Zehui Fang,Guoning Feng,Yujie Sun,Xin Chen,Rongjian Sa,Qiaohong Li,Ma Zuju

{"title":"Single-Atom Catalysts on GaN Nanowires: A Computational Discovery for Efficient Electrochemical Nitrogen Fixation.","authors":"Ling Ren,Zehui Fang,Guoning Feng,Yujie Sun,Xin Chen,Rongjian Sa,Qiaohong Li,Ma Zuju","doi":"10.1021/acs.langmuir.5c04015","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c04015","url":null,"abstract":"The electrochemical nitrogen reduction reaction (eNRR) offers a sustainable route to ammonia synthesis but faces challenges from competing hydrogen evolution and the inertness of the N≡N triple bond. Leveraging the unique properties of GaN nanowires (GaNNWs)─including their high surface area, superior stability against dissolution, and excellent electron transport capabilities─we present the first systematic computational screening of GaNNW-supported single-atom catalysts (SACs) for eNRR. Through spin-polarized density functional theory calculations, we evaluated 18 transition metal atoms from groups VB to VIII (3d-5d) anchored on defective GaNNWs. Among the candidates studied, Re@GaNNW emerges as a theoretically promising catalyst, exhibiting a calculated limiting potential of -0.34 V along the distal reaction pathway, which suggests the potential for favorable NRR activity. A low activation barrier (0.23 eV) from transition state calculations, along with solvation and dissolution analyses, confirms the catalyst's kinetic feasibility and electrochemical stability. Moreover, detailed electronic structure and charge transfer analyses elucidate the origin of the high NRR activity and selectivity. This study not only identifies a promising catalyst for eNRR but also provides mechanistic insights and a rational design framework for nanowire-supported SAC systems.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"38 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140134","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

Sustainable Recycling of Wind Turbine Blades: Glass Fiber Recovery through CFB Technology. 风力涡轮机叶片的可持续回收：通过循环流化床技术回收玻璃纤维。

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c03798

Senxiang Liu,Ke Ren,Shaoqi Kong,Suxia Ma,Ruixue Feng

{"title":"Sustainable Recycling of Wind Turbine Blades: Glass Fiber Recovery through CFB Technology.","authors":"Senxiang Liu,Ke Ren,Shaoqi Kong,Suxia Ma,Ruixue Feng","doi":"10.1021/acs.langmuir.5c03798","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c03798","url":null,"abstract":"This study investigates the application of circulating fluidized bed (CFB) oxidative pyrolysis for the recovery of glass fibers from decommissioned wind turbine blades (WTB). XPS analysis revealed that increasing oxidative pyrolysis temperature led to a progressive reduction in C-C bonds and an increase in polar surface groups such as C-OH and O─C═O, indicating enhanced surface oxidation and degradation of the carbon backbone. SEM images showed that surface morphology deteriorated at high temperatures, with increased cracking and contamination, whereas moderate oxidative pyrolysis conditions preserved smoother surfaces. Samples combusted with a temperature range of 600-700 °C (R2) yielded the most favorable balance between surface functionalization and structural integrity, as evidenced by the retention of key Si-C and Si-O-Si frameworks. R2 exhibited the highest tensile strength (0.295 GPa) and strength recovery rate (33.5%) among recycled samples. In contrast, lower temperatures showed signs of incomplete matrix decomposition, while higher temperatures underwent excessive thermal damage, impairing their mechanical performance. These findings highlight the critical role of oxidative pyrolysis temperature in governing the physicochemical and mechanical properties of recycled glass fibers and demonstrate that a controlled CFB process can enable the recovery of high-quality fibers suitable for reuse.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"100 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140129","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

Freezing Patterns of Supercooled Binary Droplets on Cold Hydrophobic Surfaces. 过冷二元液滴在冷疏水表面的冻结模式。

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c03030

Faquan Shen,Wen-Zhen Fang,Shengyun Zhang,Ding Zhang,Wen-Quan Tao

引用次数: 0

Retraction of “Cross-Linked Sodium Alginate–Sodium Borate Hybrid Binders for High-Capacity Silicon Anodes in Lithium-Ion Batteries” “高容量锂离子电池硅阳极用交联海藻酸钠-硼酸钠杂化粘结剂”的撤回

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c03601

Jianbin Li, Xianchao Hu, Hongshun Zhao, Yurong Ren, Xiaobing Huang

引用次数: 0

DFT Study on CO2- and H2O-Enhanced Solubility Contrast in Tin-Oxo Cage Photoresists. CO2和h2o增强锡氧笼型光阻剂溶解度对比的DFT研究。

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c02055

Fang-Ling Yang,Zong-Biao Ye,Dongxu Yang,Ming-Hui Wang,Yu-Qi Chen,Pan-Pan Zhou,Fu-Jun Gou

引用次数: 0

Wear-Resistant Cellulose Composites: Harnessing Graphite-Graphene Synergy for Mechanical-Tribological Balance. 耐磨纤维素复合材料：利用石墨烯-石墨烯协同作用实现机械摩擦平衡。

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c03538

Rong Wang,Xiaohua Jia,Ding Wang,Xinyue Duan,Haojie Song

{"title":"Wear-Resistant Cellulose Composites: Harnessing Graphite-Graphene Synergy for Mechanical-Tribological Balance.","authors":"Rong Wang,Xiaohua Jia,Ding Wang,Xinyue Duan,Haojie Song","doi":"10.1021/acs.langmuir.5c03538","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c03538","url":null,"abstract":"With the increasing complexity of mechanical equipment service conditions, the conventional single-component lubricant fillers have been difficult to meet the needs of practical applications, and it is necessary to explore new solutions. To this end, in this study, cellulose-based self-lubricating films (G-GNPs/EC) synergistically reinforced with graphite and graphene were prepared by in situ exfoliation of flake graphite by cellulose. During the friction process, graphite can either act as a load-bearing subject or form a lubrication transfer film to achieve wear compensation, while graphene layers retard graphite wear, enhancing interfacial stability. The resulting material achieves a low friction coefficient of 0.104 and superior load-bearing capacity, significantly outperforming the single-lubrication system. Moreover, the \"rigid-flexible\" hierarchical enhancement structure formed by graphene and esterified cellulose (EC) endows the composite with exceptional mechanical properties, achieving a tensile strength of 99.84 MPa and a toughness of 10.01 MJ/m3. Notably, the waste G-GNPs/EC demonstrates excellent biosafety and environmental friendliness, effectively adsorbing heavy metal ions (Cu2+) from soil. This work provides a feasible way to realize the practical application of high-performance, environmentally friendly self-lubricating materials.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"3 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140148","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

Core-Shell Cu@PDA Nanoparticles: Synergistic Adhesion and Active Repair for High-Performance Water-Based Lubrication. 核壳Cu@PDA纳米颗粒：协同粘附和主动修复高性能水基润滑。

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-25 DOI: 10.1021/acs.langmuir.5c03512

Chaobao Wang,Jiale Chen,Binlu Zhang,Xinqi Zou,Yuyang Xi

{"title":"Core-Shell Cu@PDA Nanoparticles: Synergistic Adhesion and Active Repair for High-Performance Water-Based Lubrication.","authors":"Chaobao Wang,Jiale Chen,Binlu Zhang,Xinqi Zou,Yuyang Xi","doi":"10.1021/acs.langmuir.5c03512","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c03512","url":null,"abstract":"Copper nanoparticles are widely used for surface repair due to their inherent softness. However, traditional Cu nanoparticles (NPs) rely on passive mechanical interlocking, which has low repair efficiency, poor stability, and reduces tribological efficiency. To address these issues, this study proposes a chemically active repair strategy based on polydopamine (PDA)-coated copper nanoparticles with a core-shell structure (Cu@PDA). The Cu@PDA nanoparticles significantly improved the hydrophilicity of the friction interface, reducing the water contact angle from 64° to 42°, thereby facilitating the stable formation of lubricating films. Under loads ranging from 49 to 147 N, the Cu@PDA suspensions exhibited excellent tribological performance in a copper-copper friction pair, achieving up to a 41.2% reduction in the friction coefficient and a 78.3% reduction in the wear rate. Microscopic morphology and wear scar analyses revealed that the enhanced lubrication performance resulted from two synergistic mechanisms: (1) under friction, Cu@PDA nanoparticles demonstrate strong underwater adhesion and spontaneously form a stable directional transfer film for active wear repair and (2) nanoparticles fill wear furrows, enhancing surface topography and lubricating film continuity. This study addresses unstable adhesion and delayed repair in water-based lubricating films, offering a novel strategy for durable aqueous lubrication systems with potential in high-load applications like marine propulsion and hydraulic systems.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"61 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145140133","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

Fabrication and Modeling of a Thermoreversible Modular Core-Shell Colloidal System. 热可逆模块化核壳胶体系统的制备与建模。

IF 3.9 2区化学

Langmuir Pub Date : 2025-09-24 DOI: 10.1021/acs.langmuir.5c03418

Florence J Müller,Alec J Pellicciotti,Shivaprakash Ramakrishna,Lucio Isa,Michael A Bevan,Jan Vermant

{"title":"Fabrication and Modeling of a Thermoreversible Modular Core-Shell Colloidal System.","authors":"Florence J Müller,Alec J Pellicciotti,Shivaprakash Ramakrishna,Lucio Isa,Michael A Bevan,Jan Vermant","doi":"10.1021/acs.langmuir.5c03418","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c03418","url":null,"abstract":"A widely used model system in rheological studies of colloidal gels consists of octadecyl-coated silica particles that undergo thermoreversible gelation in specific suspending media. Their standard synthesis protocol involves an etherification of octadecanol and suffers from poor reproducibility with varying grafting densities and, therefore, transition temperatures. To overcome this limitation, we present here an alternative approach using an amine-yne click-like reaction to graft octadecyl chains onto the particle surface with high fidelity. Suspended in tetradecane, these particles exhibit a reversible liquid-solid transition below 20 °C─making them ideal for comparative studies, particularly by avoiding complications in the rheological characterization due to loading history or thixotropic effects. By fine-tuning the reaction conditions, we precisely control the grafting density─and thus the gelation. The resulting interparticle interactions can be described as a superposition of temperature-dependent forces: repulsion at high temperatures, van der Waals attraction, and temperature-dependent chain-chain interactions, and their resulting potentials can be validated with AFM measurements. The accurate tuning of interparticle potentials makes this model system ideally suited for quantitative comparisons between experiments and simulations across relevant length scales.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"34 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127403","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