Langmuir最新文献

{"title":"Pioneers in Applied and Fundamental Interfacial Chemistry (PAFIC): Santanu Bhattacharya","authors":"Nilanjan Dey*, ","doi":"10.1021/acs.langmuir.5c0058910.1021/acs.langmuir.5c00589","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c00589https://doi.org/10.1021/acs.langmuir.5c00589","url":null,"abstract":"","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"41 20","pages":"12381–12384 12381–12384"},"PeriodicalIF":3.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144137528","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}

{"title":"Q&A with Professor Santanu Bhattacharya.","authors":"Greco González Miera","doi":"10.1021/acs.langmuir.4c04352","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c04352","url":null,"abstract":"","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"41 20","pages":"12385-12387"},"PeriodicalIF":3.7,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148669","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}

{"title":"Unique Complex Structure and Mechanism of Physisorption of Defect-Free Cyclic Poly(ethylene glycol) onto Gold Nanoparticles.","authors":"Tomohisa Watanabe,Masato Yamasaki,Tsuyoshi Nakai,Bincy Akkoli Pottammal,Yuki Maruyama,Hiroki Iwase,Akiyuki Ryoki,Tianle Gao,Feng Li,Takuya Isono,Kenji Tajima,Toshifumi Satoh,Shin-Ichiro Sato,Takuya Yamamoto","doi":"10.1021/acs.langmuir.5c00930","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c00930","url":null,"abstract":"Surface functionalization of gold nanoparticles (AuNPs) to impart colloidal stability is imperative for their applications, especially in biomedical fields. A drastic dispersion stabilizing effect of defect-free cyclic poly(ethylene glycol) (c-PEG) through their physisorption onto the surface of AuNPs was previously discovered, which was even superior to the de facto standard, thiolated PEG (HS-PEG-OMe). Here, we report a comprehensive characterization of the unique structure of the AuNPs/c-PEG complex using nuclear magnetic resonance (NMR) and small-angle neutron scattering (SANS). Furthermore, molecular dynamics (MD) simulations were employed to elucidate the distinct mechanism of physisorption. Quantification of the adsorbed c-PEG molecules by NMR revealed that the adsorption density (σ) is approximately 1 order of magnitude smaller than that of HS-PEG-OMe. Model-independent and -dependent analyses of the SANS data were used to further identify the relatively thin and sparse PEG layer as a characteristic of c-PEG adsorption. MD simulations of the physisorption events revealed the absolute value of free energy of adsorption for c-PEG to be greater than that for linear HO-PEG-OH. The favorable adsorption of c-PEG is suggested to arise from its less hydrated state and the larger number of water molecules that are released from the gold surface upon PEG adsorption.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"51 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146108","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}

{"title":"Exploring the Structural Properties of Waste-Derived Carbon Nanomaterials for Enhanced Persulfate-Driven Advanced Oxidation Processes.","authors":"Wenqi Bao,Ganapaty Manickavasagam,Wen-Da Oh","doi":"10.1021/acs.langmuir.5c01046","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c01046","url":null,"abstract":"The rapid accumulation of global solid waste poses a challenge to environmental health, human well-being, and resource sustainability. Solid waste, such as biomass and plastics, is increasingly recognized as a potential resource for producing functional materials. Through methods like pyrolysis, hydrothermal treatment, and chemical vapor deposition, solid waste can be upcycled into carbon-based catalysts for persulfate-driven advanced oxidation processes in environmental decontamination. This Perspective systematically explores waste-derived carbon nanomaterials for persulfate activation. Key structural and chemical factors influencing their catalytic behavior are evaluated, including carbon hybridization states (sp, sp2, and sp3), textural properties, oxygen-containing functional groups, structural defects, and heteroatom or metal doping. Special focus is given to how heteroatom/metal incorporation modulates the electronic structure, enabling persulfate activation through both radical and nonradical pathways. The novelty of this work lies in its integrated approach that bridges waste valorization and the rational design of functional catalysts. Consequently, this Perspective contributes to the advancement of sustainable and resource-efficient technologies for organic pollutant decontamination.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"56 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144136822","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}

{"title":"M/MoS2 (M = Ti, Al, Mo, Ag) Nanofilms: Preparation by Magnetron Sputtering and Effects of Power of Magnetron Sputtering and Medium/Low-Temperature Annealing.","authors":"Fen Xiong,Chunquan Liu,Fang He,Xin He,Jianquan Sang,Juangang Zhao,Jianping Huang,Jiwei Chen,Songtao Cai,Siyu Jiang,Hu Chen,Jun Wu","doi":"10.1021/acs.langmuir.5c01406","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c01406","url":null,"abstract":"Molybdenum disulfide (MoS2) has been widely applied in photocatalysts, field-effect transistors (FETs), and solar cells in virtue of its high specific surface area and superior carrier mobility. Nevertheless, conventional MoS2-based FETs involve Au and Ag as the electrode materials, resulting in a high manufacturing cost. More importantly, conventional preparation methods (e.g., chemical vapor deposition) require a high-temperature process and transfer of MoS2, as well as subsequent electrode deposition, for device fabrication, while transfer of MoS2 tends to cause secondary contamination. In this study, M/MoS2 (M = Al, Ti, Mo, Ag) nanofilms were prepared by magnetron sputtering at room temperature. Herein, cost-effective electrode metals were used as the electrodes, and the transfer of MoS2 is avoided. Meanwhile, the effects of key factors, including the power of magnetron sputtering and postsputtering annealing, on the electrical performance of as-prepared M/MoS2 nanofilms were explored. The results demonstrated that the power of magnetron sputtering and medium- and low-temperature annealing significantly affected film morphology (e.g., particle size and surface roughness) and structure (e.g., crystallinity and structural integrity). Specifically, the resistivities of metal-semiconductor contacts of M/MoS2 increased and then decreased as the power of magnetron sputtering increased; medium/low-temperature annealing led to decreased electrical resistivity at the metal-semiconductor contact of M/MoS2. Additionally, the M metal had a significant influence on the electrical performance of M/MoS2. Among the as-prepared composites, Mo/MoS2 exhibited the lowest contact resistance, making Mo most suitable for the electrode in MoS2-based electronic devices. This study provides insights for the preparation of large-area M/MoS2 nanofilms with improved electrical performances by cost-effective magnetron sputtering.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"58 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146107","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}

{"title":"Mechanism and Toxicity Evaluation of Antibiotics Degradation by a Z-Scheme Heterojunction Photocatalyst Composed of Bi4O5I2/Glucose-Modified Bi2O2CO3.","authors":"Han Lu,Pengfei Zhu,Yu Chen,Xuemei Chen,Xiya Xin","doi":"10.1021/acs.langmuir.5c01523","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c01523","url":null,"abstract":"The accumulation of potential antibiotics in water is potentially harmful to human beings and the environment. In this paper, a novel composite catalyst, Bi4O5I2/glucose-modified Bi2O2CO3 (BGBCO) with a high ciprofloxacin (CIP) removal rate, was rapidly synthesized by a low-temperature hydrothermal method. BGBCO demonstrated the best photocatalytic activity after 100 min irradiation by a 65 W energy-saving lamp. The apparent kinetic constants of BGBCO are 7.20, 2.28, and 1.41 times of Bi2O2CO3, Bi4O5I2, and glucose-modified Bi2O2CO3, respectively. Experimental results and characterization show that the significant improvement of photocatalytic performance can be attributed to more active sites, a wider visible light absorption range, and improved photogenerated carrier separation rate. Free radical capture experiments confirmed that •O2- and h+ are primary active species responsible for the degradation of CIP. The toxicity prediction results showed that the toxicity of CIP degradation products decreased significantly. Based on various characterization results, the possible mechanism and pathway of photocatalytic degradation of CIP were proposed. This study provides valuable insights for the modification of Bi2O2CO3-based heterojunction photocatalytic materials and their application in the purification of antibiotics in water.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"82 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144136819","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}

{"title":"Interaction of Poly(acrylic acid) Brushes with Multivalent Cations: An In Situ Study.","authors":"Léo Dagand,Birgit Urban,Qiong Li,Ilka M Hermes,Eva Bittrich,Petra Uhlmann,Martin Müller,Alexander S Münch","doi":"10.1021/acs.langmuir.5c01378","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c01378","url":null,"abstract":"Weak polyelectrolyte brushes represent a versatile class of responsive surface coatings. The adjustment of their charges by modifying the pH value and the salt content of the surrounding solution has a considerable effect on the elongation of the brush, the interaction between the chains, and the degree of swelling. Recent studies have extensively demonstrated the impact of singly charged cations through theoretical and experimental means. Analyses of the interaction between polyacids and multicharged cations remain underrepresented. Therefore, the influence of multivalent cations (Ca2+ and Ce3+) on the swelling behavior of poly(acrylic acid) (PAA) brushes is investigated as a function of salt concentration and pH. Swelling measurements show a behavior that differs significantly from the well-known case of monovalent cations. To elucidate this anomalous behavior, this study employs a combination of in situ spectroscopic ellipsometry, atomic force microscopy (AFM), and attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR). The investigations reveal a highly intricate interaction behavior, which can be ascribed to the multivalency of the cations utilized. The FTIR measurements indicate the impact of the cations on the pKa value of the brush and the dissociation behavior. This study provides insights into the charging properties of PAA brushes, highlighting the decisive additional influence of the valency of the cations in combination with their concentration. Multivalent ions have been observed to substitute for the protons of the carboxyl groups through an entropically driven process, resulting in degrees of dissociation, α > 0.5, even at a pH of 3, where PAA brushes are expected to be fully undissociated. This phenomenon leads to an increased degree of swelling at very low salt concentrations and a reduction at increasing ionic strength. Evidence was found for different types of ion/carboxylate coordination, with bridging coordination between the carboxyl groups of PAA and the cations.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"3 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145958","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}

{"title":"Gas-Template Synthesis of Ultrathin Porous Carbon Nitrides for Photocatalytic Redox Reactions.","authors":"Guan-Lin Yin,Xin-Yu Yang,Yi-Zhou Zhu,Xue-Qing Ma,Jian-Yu Zheng","doi":"10.1021/acs.langmuir.5c01357","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c01357","url":null,"abstract":"Graphitic carbon nitride (g-C3N4) has emerged as a promising metal-free photocatalyst but is plagued by its low activity owing to a high electron-hole recombination rate and small specific surface area. A specialized gas-template method was successfully employed to synthesize an ultrathin porous carbon nitride (UPCN) photocatalyst containing nitrogen vacancies. This thermally induced exfoliation and polycondensation approach can be modulated using different gas templates. Compared with bulk g-C3N4, UPCNs feature an optimized ultrathin structure, larger surface area, weaker fluorescence intensity, lower impedance, and higher photocurrent response. These properties contribute to more exposed active sites, shorter diffusion paths for both ions and electrons, and improved carrier separation. Consequently, UPCNs exhibit considerably enhanced photocatalytic performance in both the hydrogen evolution reaction (HER) and the photooxidation of 2,6-dimethyl-1,4-dihydro-3,5-pyridinedicarboxylic ester (1,4-DHP) under visible light. Among UPCNs, TPA-UPCN (tetrapropylammonium chloride as the gas template) exhibits the highest photocatalytic activity, surpassing NH4Cl-templated carbon nitrides (2747 vs 2092 μmol·g-1·h-1) in HER. Moreover, TPA-UPCN achieves unprecedented photocatalytic oxidation efficiency for 1,4-DHP. This study provides a new approach for the preparation of UPCN materials with enhanced photocatalytic performance.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"82 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144136753","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}

{"title":"Measurement and Enhancement of Coalescence-Induced Droplet Jumping in the V-Shaped Superhydrophobic Trench with a Curved Ridge.","authors":"Lingkun Han,Chuntian Liu,Shiyu Zhang,Haoyu Li,Meirong Zhao,Yinguo Huang,Yelong Zheng","doi":"10.1021/acs.langmuir.5c00903","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c00903","url":null,"abstract":"Coalescence-induced droplet jumping demonstrates significant potential for diverse applications. However, current studies on enhancing and regulating droplet jumping largely focus on specific droplet locations and enhancement structures, significantly restricting their broader applications. This study introduces a V-shaped superhydrophobic trench with a curved ridge to enhance and control droplet coalescence jumping and directional transfer. Experimentally, a dimensionless jumping velocity (Vj* ≈ 0.69) and energy conversion efficiency (η ≈ 42.13%) were achieved, representing about 111.63% improvement in energy conversion efficiency compared to the V-shaped trench and an 879.77% increase relative to planar superhydrophobic surfaces, with a jumping angle of 66°. Numerical simulations and experiments revealed that the curved ridge enhances droplet coalescence jumping velocity and enables directional control by redirecting velocity vectors and minimizing viscous loss during coalescence. Additionally, the effects of ridge length, height, width, and opening angle on droplet coalescence jumping were analyzed via numerical simulations, offering theoretical support and technical guidance for practical applications. The coalescence jumping of droplets with unequal sizes on curved ridge structures was also studied, demonstrating that droplets with radius ratios below 0.66 can bounce off trench surfaces, confirming the structure's general applicability. This study further proposes a droplet velocity measurement method integrating target detection and trajectory fitting, achieving efficient and precise droplet velocity determination.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"63 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144136820","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}

{"title":"Study on the Fabrication and Performance of Mo-WO3//Co3O4-NiO Energy Storage Devices.","authors":"LiuMenghan Zheng,JiKai Yang,GuanXu Liu,JinYing Fang,GuoZheng Wang","doi":"10.1021/acs.langmuir.5c01525","DOIUrl":"https://doi.org/10.1021/acs.langmuir.5c01525","url":null,"abstract":"Lithium-ion batteries are widely used in energy storage applications. In this work, Mo-doped WO3 (Mo-WO3) thin films were prepared by a hydrothermal method, and their electrochemical storage properties were studied. Among them, the 2%Mo-WO3 thin film showed the best storage performance. Meanwhile, Co3O4-NiO codeposited thin films were prepared by electrodeposition method, and their electrochemical storage properties were also studied. The 2%Co3O4-NiO thin film showed the best storage performance. A Mo-WO3//Co3O4-NiO electrochemical storage device was constructed with the Mo-WO3 thin film as the cathode and the Co3O4-NiO thin film as the anode. This work shows that this device has an obviously improved areal capacitance (111.5 mF/cm2) and has 88% capacity retention after 500 charge and discharge cycles.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":"58 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144136824","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}