IF 3.9 2区化学

Langmuir Pub Date : 2024-09-27 DOI: 10.1021/acs.langmuir.4c02986

Lijie Li, Tian Liu, Fangyi Yao, Dengwei Hu, Lei Miao, Shinobu Uemura, Takafumi Kusunose, Qi Feng

{"title":"Ultrahydrophilic Inorganic Nanosheet-Based Nanofiltration Membranes for High Efficiency Separations of Inorganic Salts and Organic Dyes","authors":"Lijie Li, Tian Liu, Fangyi Yao, Dengwei Hu, Lei Miao, Shinobu Uemura, Takafumi Kusunose, Qi Feng","doi":"10.1021/acs.langmuir.4c02986","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c02986","url":null,"abstract":"Two-dimensional (2D) inorganic nanomaterials have garnered extensive attention in the fabrication of inorganic nanofiltration membranes due to their unique structures and properties. In this study, we developed a facile process for fabricating large-scale ultrahydrophilic nanofiltration membranes using layered titanate H1.07Ti1.73O4·nH2O nanosheets (HT-ns). A drying deposition process was used to fabricate HT-ns membranes on a poly(tetrafluoroethylene) (TF) substrate. To enhance the bonding strength between the substrate and the deposited HT-ns membrane, the substrate surface was modified with a Cu2+-adsorbed silane monomolecular layer, connecting a negatively charged HT-ns membrane and a positively charged substrate surface. The fabricated HT-ns membrane exhibited an excellent rejection performance for inorganic salts and dye molecules. The ultrahydrophilicity of HT-ns membrane with a low water contact angle of 31° results in an ultrafast water permeance, which is approximately 6 times higher than that of a simple graphene-based nanofiltration membrane. The results open a new avenue to a new category of ultrahydrophilic nanofiltration membranes.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325802","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

Durability Properties of Steel Textiles and Bonding Properties at the Interface of Steel Textiles with Reinforced Mortar-Reinforced Concrete Systems 钢纤维织物的耐久性能以及钢纤维织物与钢筋砂浆-钢筋混凝土系统界面的粘结性能

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-27 DOI: 10.1021/acs.langmuir.4c02269

Xiaoyuan Pei, Chenxia Zhou, Tiancan Zhang, Shengkai Liu, Jiankang Wang, Shigang Luo, Zhiwei Xu

{"title":"Durability Properties of Steel Textiles and Bonding Properties at the Interface of Steel Textiles with Reinforced Mortar-Reinforced Concrete Systems","authors":"Xiaoyuan Pei, Chenxia Zhou, Tiancan Zhang, Shengkai Liu, Jiankang Wang, Shigang Luo, Zhiwei Xu","doi":"10.1021/acs.langmuir.4c02269","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c02269","url":null,"abstract":"Aging and deterioration of building structures have been persistent concerns in the field of engineering. To address these challenges while supporting modern green and sustainable development goals, this study introduces an innovative reinforcement system that employs steel textiles as the primary reinforcing material. The steel textiles were engineered by optimizing the compatibility between steel fibers and a hot melt adhesive (HMA). These textiles were then used to reinforce concrete structures, creating a steel textile-reinforced mortar (STRM)-reinforced concrete system. The study also examined the durability of the steel textiles and the interfacial bonding performance within the STRM-reinforced concrete system. The results showed that the compatibility between steel fibers and ethylene vinyl acetate copolymer (HMA-2) is better, and the steel textiles prepared with it have superior hydrothermal and corrosion resistance. After the system had been maintained for 28 days, the overall flexural strength of the STRM-reinforced concrete system was increased by 100.03%, the interfacial shear load by 49.54%, the interfacial shear stiffness by 61.2%, and the positive tensile bond performance by 26.1%. This proves that STRM has a good reinforcement effect on the concrete reinforcement system.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325804","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

In Situ Synthesis and Visualization of Membrane SNAP25 Nano-Organization 膜 SNAP25 纳米组织的原位合成与可视化

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-27 DOI: 10.1021/acs.langmuir.4c02231

Sihang Cheng, Jinrui Zhang, Yaxuan Zhang, Huili Wang, Hongda Wang

引用次数: 0

Revealing the Interlayer Interaction Forces in 2D Graphene Materials by Graphene-Wrapped Nanoprobe 用石墨烯包裹的纳米探针揭示二维石墨烯材料中的层间相互作用力

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-27 DOI: 10.1021/acs.langmuir.4c02462

Liang Cao, Ri Liu, Dongdong Liu, Peng Lang, Wenxiao Zhang, Sadaf Saeed, Zhengxun Song, Zhankun Weng, Zuobin Wang

{"title":"Revealing the Interlayer Interaction Forces in 2D Graphene Materials by Graphene-Wrapped Nanoprobe","authors":"Liang Cao, Ri Liu, Dongdong Liu, Peng Lang, Wenxiao Zhang, Sadaf Saeed, Zhengxun Song, Zhankun Weng, Zuobin Wang","doi":"10.1021/acs.langmuir.4c02462","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c02462","url":null,"abstract":"Understanding the interlayer interaction between 2D layered structures is critical for the construction of various micro- and nanoscale functional devices. However, both the normal and the tangential interlayer interactions between 2D layered materials have rarely been studied simultaneously. In this work, an immersion and lift-up method is proposed to wrap a layer of graphene flakes onto a plasma-pretreated atomic force microscopy (AFM) nanoprobe for the measurements of interaction forces by AFM. The normal interactions (adhesion force and adhesion energy) and tangential interactions (friction force) between two different probes (Pt-coated probe and graphene-wrapped probe) and two different 2D graphene materials [graphene and graphene oxide (GO)] were systematically measured, respectively. The adhesion energies of Pt–GO, Pt–graphene, graphene–GO, and graphene–graphene were measured to be 0.72 ± 0.05, 0.41 ± 0.03, 0.19 ± 0.02, and 0.10 ± 0.02 J m–2, respectively. The graphene–graphene contact pair showed the lowest adhesion force (5.57 ± 1.03 nN) and adhesion energy (0.10 ± 0.02 J m–2), which was attributed to the strong covalent bonds and charge density distribution. The friction coefficients of Pt–GO, graphene–GO, Pt–graphene, and graphene–graphene were determined to be 0.38, 0.14, 0.054, and 0.013. The graphene–graphene tribo-pair exhibited a superlow friction state for a long time, which was attributed to incommensurate contact and weak van der Waals interactions. These findings provide a technical route to reveal the interlayer interactions of various 2D layered materials, which can be widely applied in microelectromechanical systems.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325801","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

Atomic Erosion Behavior and Influence Mechanism of (CoCrFeMn)1–xNix High-Entropy Alloy Coating on Fracturing Pump Valves During Stimulation Operation (CoCrFeMn)1-xNix高熵合金涂层在压裂泵阀上的原子侵蚀行为及影响机制

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-27 DOI: 10.1021/acs.langmuir.4c03092

Yunhai Liu, Jiawei Xie, Benteng Che

{"title":"Atomic Erosion Behavior and Influence Mechanism of (CoCrFeMn)1–xNix High-Entropy Alloy Coating on Fracturing Pump Valves During Stimulation Operation","authors":"Yunhai Liu, Jiawei Xie, Benteng Che","doi":"10.1021/acs.langmuir.4c03092","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c03092","url":null,"abstract":"The CoCrFeMnNi high-entropy alloy is widely regarded as a highly promising coating for enhancing the erosion resistance of fracturing pump valves, owing to its outstanding overall properties. This study employs molecular dynamics simulations to compare and analyze the wear and erosion resistance mechanisms of (CoCrFeMn)1–xNix coatings with varying Ni ratios (0.2, 0.4, 0.6, 0.8) under nanoindentation, scratch, and impact conditions at a microscopic scale. The findings indicate that as the proportion of Ni increases under the three simulation conditions, the coating exhibits more dislocation locks, an HCP phase structure, and shear bands. These factors collectively enhance the material’s surface hardness, wear resistance, and plastic recovery. Nonetheless, this is not universally applicable. When the indentation and scratch depth are greater than 20 Å, the (CoCrFeMn)0.4Ni0.6 coating benefits from robust metal bonds and a stable lattice structure, leading to fewer wear atoms and subsurface defects, thus exhibiting superior erosion resistance. These conclusions serve as a theoretical foundation for the selection of (CoCrFeMn)1–xNix coatings in practical fracturing operations.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142325803","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

Enhancing the Self-Propelled Motion of Hydrogen Peroxide Fueled Active Particles with Formic Acid and Other Oxygen Scavengers 用甲酸和其他氧气清除剂增强以过氧化氢为燃料的活性粒子的自推进运动

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-26 DOI: 10.1021/acs.langmuir.4c02482

Ezra A. Baghdady, J. Will Medlin, Daniel K. Schwartz

引用次数: 0

Enhanced Photocatalytic Hydrogen Production Activity Driven by TiO2/(MoP/CdS): Insights from Powder Particles to Thin Films TiO2/(MoP/CdS)增强光催化制氢活性：从粉末颗粒到薄膜的启示

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-26 DOI: 10.1021/acs.langmuir.4c02635

Jiajia Wang, Jinfeng Tian, Peng Han, Lingxiao Song, Wei Wang, Keying Lin, Dong Feng, Baojun Ma

{"title":"Enhanced Photocatalytic Hydrogen Production Activity Driven by TiO2/(MoP/CdS): Insights from Powder Particles to Thin Films","authors":"Jiajia Wang, Jinfeng Tian, Peng Han, Lingxiao Song, Wei Wang, Keying Lin, Dong Feng, Baojun Ma","doi":"10.1021/acs.langmuir.4c02635","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c02635","url":null,"abstract":"Transitioning from powder photocatalysts to thin film photocatalysts is one of the necessary steps toward industrializing photocatalytic hydrogen production. Herein, we reported the integration of non-noble metal cocatalyst MoP decorated with TiO2 and CdS, forming TiO2/(MoP/CdS) for ultraviolet–visible light utilization. The designed powder TiO2/(MoP/CdS) composites achieved a superior hydrogen production rate of 42.2 mmol g–1 h–1, which is 30.1 times that of TiO2/CdS, performing the highest activity among the TiO2-CdS-based composite photocatalysts. Moreover, we fabricated a thin film from TiO2/(MoP/CdS) powder, which exhibited comparable photocatalytic activity for hydrogen production, achieving 35.5 mmol g–1 h–1 and maintaining long-term stability for 150 h. The outstanding performance was attributed to the ability of the TiO2/(MoP/CdS) composite photocatalysts to absorb both visible and ultraviolet light. Additionally, the heterojunction formed between TiO2 and CdS also played a significant role in the overall photocatalyst activity. This cost-effective catalyst holds promise for future large-scale industrial applications.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142321461","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

Numerical Simulation of Maximum Spreading of an Impacting Ferrofluid Droplet under a Vertical Magnetic Field 垂直磁场下撞击铁流体液滴最大扩展的数值模拟

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-26 DOI: 10.1021/acs.langmuir.4c01084

Jia-Cai Huang, Tian-Yang Han, Jie Zhang, Ming-Jiu Ni

{"title":"Numerical Simulation of Maximum Spreading of an Impacting Ferrofluid Droplet under a Vertical Magnetic Field","authors":"Jia-Cai Huang, Tian-Yang Han, Jie Zhang, Ming-Jiu Ni","doi":"10.1021/acs.langmuir.4c01084","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c01084","url":null,"abstract":"Theoretical modeling is proposed to predict the maximum spreading of water-based ferrofluid droplets impacting upon dry surfaces influenced by a vertical magnetic field. Constructed on the principle of energy balance, this model demonstrates excellent agreement with numerical findings across various impact velocities, contact angles, and magnetic strengths. Notably, as magnetic field strength escalates, magnetic forces prevail over viscous and capillary forces, exerting a significant influence on spreading dynamics and diminishing the maximum spreading diameter of ferrofluid droplets if the impacting shape is spherical. However, for freely falling droplets, the shape becomes prolate before impacting and the promoted surface energy balances the magnetic inhibitory effect on droplet spreading, thus resulting in an almost unchanged maximum spreading diameter. By postulating complete conversion of initial kinetic energy into magnetic energy, a scaling law is derived for maximum spreading diameter under extremely high magnetic fields. Further interpolation with viscous dissipation and capillary effects enables universal rescaling under diverse impact conditions. Through comparison with numerical outcomes, the validity of our theoretical model is affirmed, establishing a balanced formula between distinct energy components for predicting maximum spreading diameter of ferrofluid droplets accurately.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142321408","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

Creating High Yield Stress Particle-Laden Oil/Water Interfaces Using Charge Bidispersity 利用电荷双分散性创建高屈服应力含颗粒油/水界面

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-26 DOI: 10.1021/acs.langmuir.4c02513

Arsalan Abutalebi, Gordon F. Christopher

{"title":"Creating High Yield Stress Particle-Laden Oil/Water Interfaces Using Charge Bidispersity","authors":"Arsalan Abutalebi, Gordon F. Christopher","doi":"10.1021/acs.langmuir.4c02513","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c02513","url":null,"abstract":"Interfacial engineering has been increasingly used to stabilize Pickering emulsions in commercial products and biomedical applications. Pickering emulsion stabilization is aided by interfacial viscoelasticity; however, typically the primary means of stabilization are steric hindrances between high surface concentration shells of particles around the drops. In this work, the concept of creating large interfacial viscoelastic yield stresses with low particle surface concentrations (<50%) using bidisperse charged particle systems is tested to evaluate their potential efficacy in emulsion stabilization. To explore this hypothesis, interfacial rheology and visualization experiments are conducted at o/w interfaces using positively charged amidine, negatively charged carboxylate, and negatively charged sulfate-coated latex spheres and compared to a model based on interparticle forces. Bidisperse particle systems have been observed to create more networked structures than monodisperse systems. For surface concentrations of <50%, bidisperse interfaces created measurable viscoelastic moduli ∼1 order of magnitude larger than monodisperse interfaces. Furthermore, these interfaces have measurable yield stresses on the order of 10–4 Pa·m when monodisperse systems have none. Bidispersity impacts surface viscoelasticity primarily by increasing the overall magnitude of attraction between particles at the interface and not due to changes in the microstructure. The developed model predicts the relative surface fraction that creates the largest moduli and shows good agreement with the experimental data. The results demonstrate the ability to create large viscoelastic moduli for small surface fractions of particles, which may enable stabilization using fewer particles in future applications.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142321903","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

Dynamic Behavior of Impacting Droplet on the Edges of Different Wettability Surface 不同润湿性表面边缘上撞击液滴的动态行为

IF 3.9 2区化学

Langmuir Pub Date : 2024-09-25 DOI: 10.1021/acs.langmuir.4c02253

Lei Xing, Shuai Guan, Minghu Jiang, Lixin Zhao, Xinya Li

{"title":"Dynamic Behavior of Impacting Droplet on the Edges of Different Wettability Surface","authors":"Lei Xing, Shuai Guan, Minghu Jiang, Lixin Zhao, Xinya Li","doi":"10.1021/acs.langmuir.4c02253","DOIUrl":"https://doi.org/10.1021/acs.langmuir.4c02253","url":null,"abstract":"The dynamic behavior of impacting droplet shearing by the surface edge with different wettabilities is complicated and has great significance for engineering application. The morphological evolution of droplet with various Weber numbers (We) and wettability impacting on the edge of square substrate is investigated by high-speed photography. Moreover, the effects of the contact angle (α) and Weber numbers (We) on the shear breaking process of droplets are obtained. There are three types morphological evolution of impacting droplet are observed experimentally, including unbroken, tensile breakup, and shear breakup. Contact angle and Weber number have been proved to be the significant factors affecting the type of droplet morphological evolution. Meanwhile, the critical Weber number of different types are obtained quantitatively. Moreover, as α increases, the critical Weber numbers for breakup increase. In the shear breakup process, the mass ratio between the droplets remaining on the substrate and the initial droplets is maintained at 50%. Particularly, a reliable prediction model for the spreading of droplet impacting the side wall is proposed and compared with the experimental data. Overall, this study provides new direction and guidance for exploring droplet breakup kinetics.","PeriodicalId":50,"journal":{"name":"Langmuir","volume":null,"pages":null},"PeriodicalIF":3.9,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142317503","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

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