Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

{"title":"Fabrication and evaluation of the superhydrophobic RTV-NanoSiO2 composite coating on aluminum 1350 using plasma electrolytic oxidation (PEO)","authors":"M.M. Mohammadi Samani ,&nbsp;Sh. Ahangarani ,&nbsp;R. Gholamipour ,&nbsp;D. Kordestani","doi":"10.1016/j.colsurfa.2024.135807","DOIUrl":"10.1016/j.colsurfa.2024.135807","url":null,"abstract":"<div><div>Surface modification through coating has recently attracted significant attention as a practical approach to mitigating various types of damage, such as dust accumulation, pollution, and icing. Altering surface wettability to achieve superhydrophobicity, with contact angles exceeding 150°, has proven highly effective in such cases. This research aims to enhance the wettability of an aluminum substrate by employing plasma electrolytic oxidation techniques combined with a secondary nanocomposite polymer coating. The objective is to transform the surface from hydrophilic, or water-attracting, to superhydrophobic, or highly water-repellent. When ceramic-polymer nanocomposite coatings are applied, the contact angle of 167° confirms the superhydrophobic properties of the treated aluminum surface.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135807"},"PeriodicalIF":4.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720626","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":"Layer-by-layer densely stacked SnO2/rGO composites for ultrathin electromagnetic wave absorption","authors":"Xuji Zhang ,&nbsp;Yishan Wang ,&nbsp;Dongdong Liu ,&nbsp;Yao Wang ,&nbsp;Xueqian Zhang ,&nbsp;Xiaoxiao Huang","doi":"10.1016/j.colsurfa.2024.135805","DOIUrl":"10.1016/j.colsurfa.2024.135805","url":null,"abstract":"<div><div>Tin dioxide (SnO₂), as an easily tunable dielectric material with adjustable polarisation, high dielectric loss and green environment, has become a new choice for building efficient microwave absorbers. However, the single attenuation mechanism of SnO₂ causes its limitation in the effective absorption of electromagnetic waves. In this study, tin dioxide/graphene composites with layer-by-layer dense stacking structure were successfully synthesised. It was further found that the successful loading of SnO₂ particles in graphene flakes formed abundant heterogeneous interfaces and defects, which improved the interface/defect polarisation of the SnO₂/rGO composites. The layer-by-layer dense stacked structure enhances the multiple reflection/scattering of electromagnetic waves inside the material, which strengthens the electromagnetic wave loss. In addition, the close connection between the layers helps the rapid electron transport and ensures the good conduction loss of the composite. The excellent synergy between conduction loss and polarisation loss enables the composites to achieve excellent microwave absorption performance, and the layer-by-layer dense stacking structure ensures the thin thickness of the material, with a minimum reflection loss of −41.79 dB and an effective absorption bandwidth of 4.16 GHz at only 2.0 mm. In addition, fighter radar cross section simulations highlight the potential of SnO₂/rGO composites for radar stealth applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135805"},"PeriodicalIF":4.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721103","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":"A random sequential adsorption model for the prediction of SARS-CoV-2 spike protein spatial and orientational distribution on a sensing surface","authors":"Vilius Vertelis ,&nbsp;Julian Talbot ,&nbsp;Vincentas Maciulis ,&nbsp;Silvija Juciute ,&nbsp;Ieva Plikusiene","doi":"10.1016/j.colsurfa.2024.135801","DOIUrl":"10.1016/j.colsurfa.2024.135801","url":null,"abstract":"<div><div>The interaction between antibodies and viral proteins is crucial for immune response, and understanding these interactions is therefore of great importance. The sensitivity of immunosensors, where antigens are immobilized, largely depends on their orientation. However, experimental methods to determine the orientation are often time-consuming and require specialized equipment. In this paper, we present a random sequential adsorption (RSA) model for the spatial and orientational distribution of the SARS-CoV-2 spike protein immobilized on an 11-mercaptoundecanoic acid self-assembling monolayer. We compare the RSA model prediction with experimentally obtained results for the surface mass density, <span><math><mrow><mn>581</mn><mo>±</mo><mn>28</mn></mrow></math></span> fmol/<span><math><msup><mrow><mi>cm</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>, and the average number of available RBD per spike protein, 1.19. Experimental results were in good agreement for both immobilized SCoV2-S monolayer (560 fmol/cm²) and SCoV2-S/mAb (634 fmol/cm²). This validation of our simulation results allows us to draw conclusions about binding site density and the observed high sensitivity of the immunosensors. Our findings provide important insights into epitope density and immunosensor sensitivity, offering substantial utility for advancing biosensor research methodologies.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135801"},"PeriodicalIF":4.9,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721108","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":"Magnetic porous cobalt-embedded nitrogen-doped biochar derived from natural loofah cellulose for efficient adsorption of tetracycline from water","authors":"Qinghua Wu,&nbsp;Wenhui Yu,&nbsp;Yancheng Wu,&nbsp;Feng Gan,&nbsp;Xianhua Zeng,&nbsp;Longfei Fan,&nbsp;Zijin Liu,&nbsp;Baoliu Qu","doi":"10.1016/j.colsurfa.2024.135772","DOIUrl":"10.1016/j.colsurfa.2024.135772","url":null,"abstract":"<div><div>Carbon-based composite materials with high specific surface areas can provide favorable conditions for wastewater treatment. Nevertheless, it remains challenging to sustainably synthesize high-adsorption performance carbon materials on a large scale. Here, we report a facile green method for the scalable synthesis of magnetic porous adsorbents using inexpensive and widely available natural loofah (L) biomass as the carbon precursor. Polydopamine (P) and zeolitic imidazolate framework-67 (ZIF-67) were introduced into the biochar via an in situ self-assembly approach to enable heteroatom doping and increase the specific surface area. After carbonization under a N₂ atmosphere, the nitrogen-doped adsorbent of C-(ZIF-67@P@L) retained a highly interconnected honeycomb-like 3D porous structure with a high specific surface area of 444.59 m²/g. Adsorption kinetics and thermodynamics conformed to the pseudo-second-order kinetic and Langmuir isotherm model, with the maximum adsorption capacity estimated at 662.25 mg/g on the basis of the Langmuir isotherm equation. The adsorption mechanism investigation revealed that the adsorption mechanism mainly included electrostatic interactions, π<img>π interactions, hydrogen bonding, and pore filling. Additionally, the adsorbent had good cycle stability and the ability to be magnetically separated from water, making it highly promising for practical wastewater treatment applications.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135772"},"PeriodicalIF":4.9,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720627","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":"Comprehensive consideration of screening fluoride electrolyte for electrodeposition of rare earth cerium","authors":"Jing Pan ,&nbsp;Yongde Yan ,&nbsp;Yuan Deng ,&nbsp;Xuepeng Wang ,&nbsp;Li Ding ,&nbsp;Xin Kong ,&nbsp;Yun Xue ,&nbsp;Fuqiu Ma ,&nbsp;Kai Zhu ,&nbsp;Wei Liu","doi":"10.1016/j.colsurfa.2024.135769","DOIUrl":"10.1016/j.colsurfa.2024.135769","url":null,"abstract":"<div><div>Molten salt is an indispensable medium for the electrochemical extraction of rare earth metal cerium (Ce). However, the existing molten salt system is incapable of meeting the low-cost requirement of industrial production. The selection of molten salt electrolyte is closely related to its thermodynamic properties and its influence on electrolytic extraction in terms of electrochemical reaction and kinetics. Herein, the constructed potential fluoride electrolyte systems (CeF₃-LiF-BaF₂, CeF₃-LiF-NaF, CeF₃-LiF-KF, and CeF₃-LiF-NaF-KF melts) were systematically investigated with respect to theoretical electrochemical window, exchange current density at the molten salt/electrode interface during electrolytic reduction, and the effect of density in rare earth deposition. From a comprehensive point of view, the choice of molten salt system for electrolysis should combine the electrochemical reaction properties of rare earth metal ions in it and the physicochemical properties of the molten salt itself. The CeF₃-LiF-BaF₂ electrolyte was considered as the most promising molten salt system due to its various outstanding parameters (diffusion coefficients: 6.74×10⁻⁷ cm² s⁻¹, exchange current density: 0.649 A cm⁻², density: 4.046 g·cm⁻³). This work provides new insights into fluoride electrolyte design screening.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"705 ","pages":"Article 135769"},"PeriodicalIF":4.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142653931","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":"Experimental and computational investigations on the synergistic inhibition mechanism of biphenyl quinoline quaternary ammonium and hexamethylenetetramine on the corrosion of J55 steel in 20 wt% HCl solution","authors":"Weiwei Han ,&nbsp;Hailan Tian ,&nbsp;Li Xia ,&nbsp;Jinsheng Zhao ,&nbsp;Chenwei Liu ,&nbsp;Sanbao Dong","doi":"10.1016/j.colsurfa.2024.135781","DOIUrl":"10.1016/j.colsurfa.2024.135781","url":null,"abstract":"<div><div>The present study involves the synthesis of a novel biphenyl quinoline quaternary ammonium salt (BDQ) and its application in combination with hexamethylenetetramine (HMT) as a compounded corrosion inhibitor for acid stimulation, aiming to effectively prevent the corrosion of J55 steel in a 20 wt% HCl solution at 60 °C. The optimized BDQ/HMT mixture (with a mass ratio of 1:3) at 0.4 wt% produced a significant decrease in the corrosion rate of J55 steel to 3.7637 g/(m²·h), much lower than the requirement of 5.0 g/(m²·h) stipulated by the standard SY/T 5404–2019. The electrochemical analysis demonstrated that the BDQ/HMT mixture exhibited a mixed-type corrosion inhibitor with predominantly anodic characteristics, retarding both the anodic oxidation and cathodic reduction reactions of J55 steel in the HCl solution. The adsorption studies revealed that BDQ conformed to a Langmuir-type adsorption isotherm on J55 surfaces, driven by a combination of physisorption and chemical interactions, with chemical interactions playing a dominant role. Additionally, quantum chemical calculations and molecular dynamics simulation were also performed to elucidate the observed synergistic effect of BDQ and HMT.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135781"},"PeriodicalIF":4.9,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720963","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":"CdS nanorods embedded in ZnIn2S4 nanosheets to construct n-n heterojunction for ultrahigh photocatalytic H2 and H2O2 production","authors":"Ze Du ,&nbsp;Jianmei Pan ,&nbsp;Chengfei Ma ,&nbsp;Yi Guan ,&nbsp;Maoxin Sun ,&nbsp;Zimo Gao ,&nbsp;Hua Tang ,&nbsp;Xuehua Yan","doi":"10.1016/j.colsurfa.2024.135774","DOIUrl":"10.1016/j.colsurfa.2024.135774","url":null,"abstract":"<div><div>A series of n-n type CdS/ZnIn₂S₄ photocatalysts with type-Ⅱ path were designed by building embedded interface to obtain ultrahigh photocatalytic performance. The CdS nanorods were equably embedded in ZnIn₂S₄ nanosheets to form the one-dimensional/two-dimensional (1D/2D) heterostructure by a two-step synthesis method. Under the illumination of a 420 nm LED lamp, CdS/ZnIn₂S₄ exhibits the optimal photocatalytic hydrogen production rate (33.3 mmol g⁻¹ h⁻¹), which is 4.8 times that of pure ZnIn₂S₄. CdS/ZnIn₂S₄ also displays the best photocatalytic H₂O₂ production rate (1.36 mmol L⁻¹ h⁻¹), which is 2.3 times higher than pure CdS and 3.8 times higher than pure ZnIn₂S₄. Moreover, it exhibits extremely high apparent quantum efficiency (31.71 % at 420 nm) for hydrogen production. This enhanced photocatalytic performance can be attributed to the construction of n-n type heterojunction with built-in electric field action, 1D/2D embedded interface and type-Ⅱ transfer path of photon-generated carriers, which can efficiently improve the light absorption ability, accelerate the spatial separation and transfer of carriers, and provide more active sites for H⁺ reduction to H₂ and H₂O₂.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135774"},"PeriodicalIF":4.9,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720474","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":"Application of biochar derived from olive, peach, and apricot stones for CO2 capture: A statistical physics and thermodynamic investigation","authors":"Salah Knani ,&nbsp;Ana Carolina Ferreira Piazzi Fuhr ,&nbsp;Guilherme Luiz Dotto ,&nbsp;Alessandro Erto ,&nbsp;Abdellatif Sakly ,&nbsp;Marco Balsamo ,&nbsp;Nizar Lefi ,&nbsp;Andrea Liliana Moreno Rios ,&nbsp;Luis Felipe Oliveira Silva","doi":"10.1016/j.colsurfa.2024.135782","DOIUrl":"10.1016/j.colsurfa.2024.135782","url":null,"abstract":"<div><div>This study evaluated the application of biochar derived from agro-industrial waste, such as olive, peach, and apricot stones, for CO₂ capture, offering a sustainable approach for gas adsorption. The biochar activation was carried out using water vapor, and the process was analyzed using CO₂ adsorption isotherms at temperatures from 303 to 353 K. To understand the interaction between CO₂ and the surface of the adsorbents, four statistical physics models were used. The thermodynamics of the process was evaluated from the perspective of statistical physics theory. The models were thoroughly analyzed using statistical criteria and parameter analysis. It was found that the best model to describe the CO₂ interaction with olive and peach stones biochar was the two-layer formation model with two adsorption energies, while for apricot stones biochar, the multilayer model with saturation was the most suitable. Analysis of the parameters revealed that the number of CO₂ molecules per site is between 0.5 and 1, indicating that the molecules are positioned parallel and not parallel to the surface of the adsorbents. The adsorption energy showed that the process is predominantly physisorption (&lt;30 kJ mol⁻¹). Thermodynamic analysis indicated that the process is spontaneous and exothermic and that increasing the temperature impairs the CO₂ removal. The present study demonstrates that biochars derived from agro-industrial waste are promising for CO₂ capture, offering an efficient and sustainable solution, and the application of statistical physics models offers a deeper understanding of the adsorbent-adsorbate interactions, offering insights that go beyond the limitations of traditional models.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135782"},"PeriodicalIF":4.9,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721106","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":"CeMnOX catalysts for enhanced ozonation of phenol: Performance evaluation and mechanism investigation","authors":"Peng Wang ,&nbsp;Xueqian Zhang ,&nbsp;Bin Zhou ,&nbsp;Wencai Zhang ,&nbsp;Fanpeng Meng ,&nbsp;Chuncheng Wei ,&nbsp;Lijuan Zhou ,&nbsp;Guangwu Wen ,&nbsp;Yishan Wang","doi":"10.1016/j.colsurfa.2024.135771","DOIUrl":"10.1016/j.colsurfa.2024.135771","url":null,"abstract":"<div><div>In order to enhance the catalytic activity and stability of transition metal catalysts in heterogeneous ozonation and effectively treat phenol-containing wastewater, we synthesized a cerium-manganese composite catalyst (CeMnO_X) using hydrothermal and calcination methods. The results show that Mn atoms doped into the CeO₂ lattice form CeMnO_X solid solution, which possesses abundant surface defects. The large specific surface area and pore volume of the catalyst favor the exposure of active sites. The CeMnO_X catalyst contains rich redox pairs and a high amount of chemisorbed oxygen, with numerous oxygen vacancies serving as reactive sites, thereby improving catalytic performance. Degradation experiments demonstrated that the CeMnO_X catalyst achieved nearly 100 % COD removal within 30 min during catalytic ozonation of phenol, with a significantly higher catalytic efficiency than pure CeO₂ or MnO_X. Among them, Ce_0.3Mn_0.7O_X exhibited the best performance due to the presence of both the CeMnO_X solid solution and MnO_X phases. The combined effect of oxygen vacancies and the synergistic interaction between Ce and Mn is critical to the exceptional catalytic activity of the CeMnO_X catalyst.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135771"},"PeriodicalIF":4.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721085","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":"Step emulsification for monodisperse droplet creation using a connection-free PDMS microchip","authors":"Kazutaka Ota,&nbsp;Masahiko Hashimoto","doi":"10.1016/j.colsurfa.2024.135725","DOIUrl":"10.1016/j.colsurfa.2024.135725","url":null,"abstract":"<div><div>Microfluidic technology for generating monodisperse droplets has significantly advanced various scientific and industrial applications. However, reliance on complex infrastructure, such as external pumps and intricate connections, limits its widespread adoption. In this study, we focused on passive droplet formation through step emulsification (SE) using a connection-free polydimethylsiloxane (PDMS) microchip. Our microchip design enabled droplet formation without the need for external pumps for active flow control, instead utilizing the pressure differential created between inlet reservoirs and a shared sealed-outlet space when degassed PDMS was exposed to atmospheric pressure. We began with a simple design and through progressive refinement of the microchip geometry, we achieved a more advanced design that facilitated detailed analysis of droplet formation dynamics. This design allowed for real-time observation of the droplet formation process, including time-dependent variations in droplet formation rate and the associated gentle changes in droplet size, which were intrinsic characteristics of connection-free PDMS microchips. Experiments demonstrated that a triangular nozzle design significantly improved droplet size uniformity, with a coefficient of variation in droplet diameter below 2 % under optimal conditions. These results highlighted the potential of connection-free SE microchips for generating highly uniform droplets in a simplified and efficient manner.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"706 ","pages":"Article 135725"},"PeriodicalIF":4.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142721092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}