Surfaces and Interfaces最新文献_第5页

Thermochemical and structural characterization of porous carbon synthesized from a ternary deep eutectic solvent of gallic acid, urea, and zinc chloride: Insights into CO2 adsorption performance 由没食子酸、尿素和氯化锌三元共晶溶剂合成的多孔碳的热化学和结构表征：对CO2吸附性能的见解

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-30 DOI: 10.1016/j.surfin.2025.107775

Siti Abd Halim , Nuraqilah Mohd Hatta , Mohd Zul Hilmi Mayzan

{"title":"Thermochemical and structural characterization of porous carbon synthesized from a ternary deep eutectic solvent of gallic acid, urea, and zinc chloride: Insights into CO2 adsorption performance","authors":"Siti Abd Halim , Nuraqilah Mohd Hatta , Mohd Zul Hilmi Mayzan","doi":"10.1016/j.surfin.2025.107775","DOIUrl":"10.1016/j.surfin.2025.107775","url":null,"abstract":"<div><div>A novel approach was developed for synthesizing nitrogen-doped porous carbon (NPC) using a ternary deep eutectic solvent (DES) composed of gallic acid, urea, and zinc chloride (Ga:U:ZnCl₂). The synthesis was performed at two carbonization temperatures (500 °C and 800 °C), with varying molar ratios of precursors. FTIR analysis confirmed the incorporation of nitrogen-containing functional groups, as indicated by N<img>H and O<img>H stretching vibrations. TGA results demonstrated that NPC thermal stability improved with lower urea content, with NPC800–161 exhibiting the highest thermal resilience. Structural characterization revealed that graphitization decreased with increasing carbonization temperature and urea content, as shown by XRD and Raman spectroscopy. XPS analysis further validated these findings, showing a shift in nitrogen species distribution, with pyridinic-N dominating at 800 °C, enhancing the material’s adsorption potential. SEM and BET analyses indicated that carbonization temperature and urea content significantly influenced morphology and porosity. NPC800–161, with a honeycomb-like porous structure, achieved a BET surface area of 306.99 m²/g and a CO₂ adsorption capacity of 1.86316 mmol/g. These results emphasize the importance of optimizing precursor ratios and carbonization conditions to enhance NPC performance for CO₂ capture, catalysis, and energy storage. NPC800–161 emerges as a promising material for environmental and industrial applications, demonstrating the potential of DES-derived NPCs in addressing sustainability challenges.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107775"},"PeriodicalIF":6.3,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of γ-radiation on the interfacial chemistry of spheroidal graphite cast iron in contact with Wyoming bentonite slurry γ辐射对球状石墨铸铁与怀俄明州膨润土浆料接触界面化学的影响

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-30 DOI: 10.1016/j.surfin.2025.107773

A.G. Muñoz , D. Schild , S. Kaufhold , D. Dobrev , V.F. Viebranz , Th. Hassel

{"title":"Effects of γ-radiation on the interfacial chemistry of spheroidal graphite cast iron in contact with Wyoming bentonite slurry","authors":"A.G. Muñoz , D. Schild , S. Kaufhold , D. Dobrev , V.F. Viebranz , Th. Hassel","doi":"10.1016/j.surfin.2025.107773","DOIUrl":"10.1016/j.surfin.2025.107773","url":null,"abstract":"<div><div>In most concepts for the disposal of high-level radioactive waste, cast-iron canisters containing spent fuels are encapsulated by bentonite that hydrates on contact with inflowing geological waters. This triggers the corrosion of cast iron, which can be turned worse under the exposition to significative levels of γ-radiation in unforeseeable scenarios. Such effects were examined by contrasting the chemistry of the corroded surface of spheroidal graphite cast iron in contact with Wyoming bentonite, fully hydrated with natural aerated Opalinus-Clay water, after 220 days of γ-ray exposition with a dose rate of 130 Gy h<sup>-1</sup> at 50 °C and that observed after a similar experiment without radiation. SEM-EDX, XPS, XRD, and ICP-OES were applied. The growth of patches of calcium hydroxide and ferrous hydroxide crystals as well the presence of iron silicate layers adhered to the cast iron surface as predominant corrosion products are a fingerprint for a strong interfacial alkalization and the creation of a rather reductive milieu by radiation. These chemical transformations reveal an enhanced cathodic electrocatalytic activity of graphite nodules for water reduction under radiation which increases the anodic dissolution of the iron matrix and triggers the formation of a silicate diffusion barrier by dissolution-precipitation reactions. The radiation-induced cathodic activity may constitute an additional, more critical factor than the generation of oxygen for the container integrity, even after having reached the anoxic phase.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107773"},"PeriodicalIF":6.3,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wettability of the coal–water–Ar interface under coupled temperature and pressure conditions 温度和压力耦合条件下煤-水-氩界面的润湿性

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-29 DOI: 10.1016/j.surfin.2025.107770

Jiajia Zhao , Baiquan Lin , Shixiang Tian , Ting Liu , Xiangliang Zhang , Qian Liu , Shunqing Ma

{"title":"Wettability of the coal–water–Ar interface under coupled temperature and pressure conditions","authors":"Jiajia Zhao , Baiquan Lin , Shixiang Tian , Ting Liu , Xiangliang Zhang , Qian Liu , Shunqing Ma","doi":"10.1016/j.surfin.2025.107770","DOIUrl":"10.1016/j.surfin.2025.107770","url":null,"abstract":"<div><div>Coal wettability plays a critical role in a wide range of engineering applications, including mine disaster prevention, coalbed methane recovery, mineral flotation, and CO₂ geological sequestration. However, the mechanisms by which temperature and pressure affect wettability at the coal–water–gas interface remain inadequately understood. In this study, we systematically investigated the variations in surface tension of aqueous solutions and coal–water contact angles under an inert argon Ar atmosphere using a dedicated wettability testing system, in combination with molecular dynamics (MD) simulations to uncover the underlying microscopic mechanisms. Experimental results revealed that increasing temperature and Ar pressure led to a gradual decline in both water surface tension and coal–water contact angle. Despite this trend, the overall changes were relatively modest, indicating that coal wettability remains largely stable under such conditions. MD simulations further demonstrated that temperature and Ar pressure exert only minor influences on simulated contact angles, coal–water interaction energies, hydrogen bond numbers, diffusion coefficients of water molecules, and their relative concentration distributions. At the molecular level, elevated temperatures were found to promote water spreading on the coal surface, whereas increased Ar pressure slightly inhibited this behavior. Moreover, the contrasting impacts of adsorptive versus non-adsorptive gases on coal surface wettability were explored. Collectively, these findings provide critical insights into the macro- and microscopic wetting behavior at coal–water interfaces under complex thermodynamic conditions, offering theoretical guidance for the efficient and environmentally sustainable utilization of coal resources.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107770"},"PeriodicalIF":6.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spray pyrolysis as an alternative route to produce thermoelectric layers of NaxCoO2 喷雾热解是制备NaxCoO2热电层的替代途径

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-29 DOI: 10.1016/j.surfin.2025.107769

Marcio Peron Franco de Godoy , Mauricio Morais de Lima Jr , Mohammad Ali Nasiri , Ana Luiza Costa Silva , Ariano D. Rodrigues , Andres Cantarero

{"title":"Spray pyrolysis as an alternative route to produce thermoelectric layers of NaxCoO2","authors":"Marcio Peron Franco de Godoy , Mauricio Morais de Lima Jr , Mohammad Ali Nasiri , Ana Luiza Costa Silva , Ariano D. Rodrigues , Andres Cantarero","doi":"10.1016/j.surfin.2025.107769","DOIUrl":"10.1016/j.surfin.2025.107769","url":null,"abstract":"<div><div>This study investigates polycrystalline Na<sub>x</sub>CoO<sub>2</sub> thin films synthesized via spray pyrolysis on glass substrates over a wide compositional range of x. The films were grown using cobalt acetate tetrahydrate and sodium hydroxide as precursors, employing different precursor solution molarities to control the growth dynamics. The characterization of the system was conducted using X-ray Diffraction, Scanning Electron Microscopy, Optical Transmittance, and Raman spectroscopy. Raman spectroscopy revealed oxygen in-plane motion modes under specific excitation wavelengths due to optical resonance conditions and identified the films as γ-Na<sub>x</sub>CoO<sub>2</sub>. The growth of γ-Na<sub>x</sub>CoO<sub>2</sub> phase is favored by a high-molarity synthesis mode followed by an oxygen thermal annealing. At room temperature, films with higher sodium content exhibited decreased Seebeck coefficients and electrical resistivity. Notably, a maximum power factor of approximately ∼3.3 µW/K²m was achieved at <em>x</em> = 0.93. Conversely, films prepared at low-molarities presents Na-content Co<sub>3</sub>O<sub>4</sub> phases and Seebeck coefficients up to 500 μV/K yet suffer from poor electrical conductivity. These findings underscore the viability of spray pyrolysis as a scalable method for producing p-type thermoelectric layers such as NaCoO<sub>2</sub>.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107769"},"PeriodicalIF":6.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual-function UiO-66/AgNPs/TiO2 SERS substrate with photocatalytic self-cleaning for recyclable detection of thiram 光催化自清洁双功能UiO-66/AgNPs/TiO2 SERS衬底用于可回收检测硫

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-29 DOI: 10.1016/j.surfin.2025.107765

Ziyu Wan , Zixiu Li , Jingjing Wang , Song Guo , Haiyang Zhang , Weibin Chen , Chaorong Li , Hualin Ding

{"title":"Dual-function UiO-66/AgNPs/TiO2 SERS substrate with photocatalytic self-cleaning for recyclable detection of thiram","authors":"Ziyu Wan , Zixiu Li , Jingjing Wang , Song Guo , Haiyang Zhang , Weibin Chen , Chaorong Li , Hualin Ding","doi":"10.1016/j.surfin.2025.107765","DOIUrl":"10.1016/j.surfin.2025.107765","url":null,"abstract":"<div><div>Thiram, a cost-effective pesticide widely used for disease control in agricultural produce, poses potential health risks, necessitating the development of rapid surface-sensing techniques. Herein, a recyclable ternary surface-enhanced Raman scattering (SERS) substrate was developed by combining UiO-66/AgNPs with TiO<sub>2</sub> nanoparticles. The optimized UiO-66/AgNPs composite (S10) demonstrated excellent SERS performance, achieving a detection limit of 10<sup>−11</sup> M for rhodamine 6 G (R6G), with a wide linear range (10⁻⁶ to 10⁻¹¹ M, R² > 0.99), high signal uniformity (relative standard deviation < 10 %), and good temporal stability. The enhancement mechanism is attributed to the synergistic effects of analyte enrichment by the porous UiO-66, electromagnetic enhancement from AgNPs via localized surface plasmon resonance and nanogap effects, and chemical enhancement through charge transfer at the Ag–UiO-66 interface. Practical detection capabilities of S10 were confirmed with thiram detection limits of 10<sup>−9</sup> M in laboratory conditions, 10<sup>−8</sup> M in lake water, and 1 mg/L on apple surfaces. Further incorporation of TiO₂ nanoparticles yielded the S10T substrate, which not only improved SERS activity but also enabled photocatalytic self-cleaning. The S10T substrate maintained high performance over three consecutive detection-degradation cycles, retaining 89.2 % of the thiram characteristic peak intensity at 560 cm<sup>−1</sup> after the third cycle, thereby demonstrating excellent recyclability and great potential for practical applications.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107765"},"PeriodicalIF":6.3,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of S-scheme PbBiO2I/La(OH)3 Heterojunction with Synergistic Photocatalytic Nitrogen Fixation and Degradation Function 具有协同光催化固氮降解功能的s型PbBiO2I/La(OH)3异质结的构建

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-28 DOI: 10.1016/j.surfin.2025.107767

Yanlong Yu, Shanshan Ma, Xin Li, Sai Yan

{"title":"Construction of S-scheme PbBiO2I/La(OH)3 Heterojunction with Synergistic Photocatalytic Nitrogen Fixation and Degradation Function","authors":"Yanlong Yu, Shanshan Ma, Xin Li, Sai Yan","doi":"10.1016/j.surfin.2025.107767","DOIUrl":"10.1016/j.surfin.2025.107767","url":null,"abstract":"<div><div>Developing efficient photocatalysts for simultaneous nitrogen fixation and pollutant degradation remains a huge challenge for practical application of photocatalysis. This work fabricated a novel 1D/2D La(OH)<sub>3</sub>/PbBiO<sub>2</sub>I S-scheme heterojunction photocatalyst initially via hydrothermal synthesis. The composite displayed superior photocatalytic activity in both photocatalytic N<sub>2</sub> fixation with air and RhB photodegradation. Notably, the optimal La(OH)<sub>3</sub>/PbBiO<sub>2</sub>I composite (designated as ICL6) achieved maximal activity enhancement for both reactions among all photocatalysts. Morphology, structure, optical traits, and photoelectrochemical properties were comprehensively investigated using multiple characterization techniques. Analyses confirmed random dispersion of 1D La(OH)<sub>3</sub> nanorods on 2D PbBiO<sub>2</sub>I nanoplates. Fermi level disparity revealed PbBiO<sub>2</sub>I’s higher energy than La(OH)<sub>3</sub>, inducing electron migration from PbBiO<sub>2</sub>I to La(OH)<sub>3</sub> to establish an internal electric field (IEF). Driven by this IEF and band bending, La(OH)<sub>3</sub> conduction band (CB) electrons rapidly transferred to PbBiO<sub>2</sub>I’s valence band (VB), thus boosting charge separation. Consequently, electrons in PbBiO<sub>2</sub>I’s CB and holes in La(OH)<sub>3</sub>’s VB retained potent redox capacities. The enhanced photocatalytic performance stems primarily from efficient carrier separation enabled by the S-scheme pathway and novel 1D/2D nanostructure. This study paves the way for designing novel photocatalysts with dual functions for N<sub>2</sub> fixation and dye degradation.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107767"},"PeriodicalIF":6.3,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the mechanisms behind the bonding performance of wire arc coatings 了解电弧镀层粘合性能背后的机制

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-28 DOI: 10.1016/j.surfin.2025.107768

Gul Badin , Dawei Zhang , Muhammad Imran Khan , Ying Huang

{"title":"Understanding the mechanisms behind the bonding performance of wire arc coatings","authors":"Gul Badin , Dawei Zhang , Muhammad Imran Khan , Ying Huang","doi":"10.1016/j.surfin.2025.107768","DOIUrl":"10.1016/j.surfin.2025.107768","url":null,"abstract":"<div><div>Anodic metals, such as aluminum (Al) and zinc (Zn), are extensively utilized via thermal spraying to form a protective film on structural steel from corrosion. The robustness and durability of thermal spray coatings are significantly influenced by bonding performance, which largely depends on substrate surface roughness and coating thickness. This research assessed the impact of substrate surface roughness and coating thickness on the interfacial bonding performance of wire arc coatings with different coating materials (Zn, Al, and Zn-15Al) on A36 steel surfaces. Pull-off (tensile) and Lap shear (LS) tests were conducted to explore the mechanical properties of metallic coatings adhered to substrates. The pull-off test results demonstrated that thicker coatings formed stronger bonds on coarse surfaces, while thinner coatings performed better on fine surfaces. The LS test showed that pure Al coatings were 25–30 % stronger in shear and fracture elongation than pure Zn coatings. In comparison, Zn-15Al coatings outperformed in shear stress by 15 % over pure Al but exhibited the least resistance to fracture elongation. The effects of substrate roughening, arc spray profiles, and the morphology of the sandblast grits were explored by scanning electron microscopy (SEM) analyses. The elemental composition of the coatings from energy dispersive spectroscopy (EDS) revealed a uniform and continuous coating layer with minimal porosity and oxidation, confirming the effectiveness of thermal spray process. This study contributes to the fundamental understanding of the critical factors in controlling the bonding performance of wire arc coatings, paving the way for the optimization and design framework of metallic coatings.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107768"},"PeriodicalIF":6.3,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced photo-fenton degradation of tetracycline hydrochloride using type-II magnetic FeP/Cu2O heterojunction catalysts 磁性FeP/Cu2O异质结催化剂增强盐酸四环素的光fenton降解

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-28 DOI: 10.1016/j.surfin.2025.107766

Dan Li , Zhiqi Zhu , Chuanqiang Yin , Feigao Xu

{"title":"Enhanced photo-fenton degradation of tetracycline hydrochloride using type-II magnetic FeP/Cu2O heterojunction catalysts","authors":"Dan Li , Zhiqi Zhu , Chuanqiang Yin , Feigao Xu","doi":"10.1016/j.surfin.2025.107766","DOIUrl":"10.1016/j.surfin.2025.107766","url":null,"abstract":"<div><div>Antibiotic contamination poses significant environmental and health risks, necessitating efficient wastewater treatment technologies. The degradation of tetracycline hydrochloride (TCH) was investigated using a magnetic FeP/Cu<sub>2</sub>O composite via a photo-Fenton process in this study. The composite was synthesized through chemical precipitation and characterized by XRD, FT-IR, SEM, and XPS, which confirmed the successful formation of a p-n heterojunction. The Fe<sub>1</sub>Cu<sub>1</sub> composite exhibited superior photo-Fenton performance, achieving 94.7% TCH degradation under visible light within 60 min, which outperformed its individual components, FeP and Cu<sub>2</sub>O. Key factors such as catalyst dosage, H<sub>2</sub>O<sub>2</sub> concentration, pH (2.2-11.2), and temperature were optimized, which demonstrated the system's broad applicability and stability. Radical trapping and EPR analyses identified •OH as the dominant reactive species. The heterojunction was responsible for enhancing charge separation and Fe<sup>3</sup>⁺/Fe<sup>2</sup>⁺ cycling, while Cu<sub>2</sub>O improved visible-light utilization. The catalyst maintained over 80% degradation efficiency for TCH after five cycles and showed strong resilience to coexisting inorganic ions. This study provides a promising strategy for designing robust, pH-tolerant catalysts for antibiotic degradation in wastewater.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107766"},"PeriodicalIF":6.3,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Harnessing advanced interfaces in ternary photocatalysts: VS₂ nanoflowers with carbon spheres and N-doped graphene for wastewater treatment 利用先进的三元光催化剂界面：碳球VS纳米花和n掺杂石墨烯用于废水处理

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-28 DOI: 10.1016/j.surfin.2025.107764

Reim Abdullah Almotiri , Manal Mohammed Alkhamisi , Seung Goo Lee , Muhammad Farooq Warsi

{"title":"Harnessing advanced interfaces in ternary photocatalysts: VS₂ nanoflowers with carbon spheres and N-doped graphene for wastewater treatment","authors":"Reim Abdullah Almotiri , Manal Mohammed Alkhamisi , Seung Goo Lee , Muhammad Farooq Warsi","doi":"10.1016/j.surfin.2025.107764","DOIUrl":"10.1016/j.surfin.2025.107764","url":null,"abstract":"<div><div>A simple hydrothermal technique was employed to prepare vanadium sulfide flowers (VS<sub>2</sub>) and carbon spheres (Cs). Their binary composite (VS/Cs) and ternary composite with nitrogen-doped graphene (VS/Cs/NG) were synthesized via ultrasonication. The as-fabricated photocatalysts (VS<sub>2</sub>, VS/Cs, and VS/Cs/NG) were scrutinized for the photodegradation of actual wastewater containing Congo red (CR) dye. The phase detection, morphological analysis, and structural features were determined by XRD, FTIR, SEM, PL, XPS, and UV/VIS analysis. XRD results attributed the monoclinic crystal phase to the C2 space group of VS<sub>2</sub>. SEM micrographs attributed the homogeneous stacked sheets of VS<sub>2</sub>, which are well arranged into flower-like 3D structure. The VS/Cs/NG composite showed the best photodegradation results for CR dye under visible light irradiation with a rate constant of 0.02387 min<sup>−1</sup>. Notably, the experimental results ascribed a noteworthy impact of reaction media on the photodegradation of the pollutant, recommending that pH 3 and 20 mg photocatalyst dosage are favorable conditions for this photocatalytic reaction mechanism. In conclusion, this study illustrates that the VS/Cs/NG composite can serve as a competent photocatalyst for the photodegradation of actual wastewater.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107764"},"PeriodicalIF":6.3,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145270322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chirality-dependent interfacial energy dissipation in graphene-reinforced polymer nanocomposites: A molecular dynamics study 石墨烯增强聚合物纳米复合材料中手性依赖的界面能量耗散：分子动力学研究

IF 6.3 2区材料科学

Surfaces and Interfaces Pub Date : 2025-09-27 DOI: 10.1016/j.surfin.2025.107763

Sihyun Kim , Hongdeok Kim , Junho Oh , Joonmyung Choi

{"title":"Chirality-dependent interfacial energy dissipation in graphene-reinforced polymer nanocomposites: A molecular dynamics study","authors":"Sihyun Kim , Hongdeok Kim , Junho Oh , Joonmyung Choi","doi":"10.1016/j.surfin.2025.107763","DOIUrl":"10.1016/j.surfin.2025.107763","url":null,"abstract":"<div><div>Methods for controlling the macroscopic mechanical behavior of polymers through graphene insertion are now being refined to utilize the inherent chirality of graphene. In this study, we computationally investigated the variation in the damping capacity with respect to graphene chirality and the relative vibrational load direction in epoxy/graphene nanocomposites at the molecular scale. All-atom molecular dynamics simulations showed that the nanocomposites exhibited improved energy dissipation when subjected to out-of-plane oscillatory shear strain along the armchair graphene compared to that under shear strain along the zigzag graphene. In particular, the anisotropic behavior governed the interfacial friction and associated slip properties of the polymer adjacent to graphene. Due to its high elastic modulus, armchair graphene facilitated the slippage of polymer components by suppressing out-of-plane wrinkle formation and structural interlocking at the interface. Owing to the hexagonal pattern formed by the graphene units, the surface energy landscape showed higher variation in the armchair direction. This forces the adjacent polymers to bypass the high-energy points on the potential energy surface, thus elongating the displacement trajectories. By contrast, the zigzag orientation maintains good interfacial bonding with the polymer under an external load owing to its high flexibility and low surface-energy variation. These findings provide molecular-level insights into the chirality-induced anisotropy in vibration damping and highlight a novel design strategy for the optimization of the dynamic mechanical performance of graphene-reinforced nanocomposites.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"75 ","pages":"Article 107763"},"PeriodicalIF":6.3,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145223242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0