Applied Surface Science最新文献_第5页

Amine- and hydroxyl-functionalized copolymers as lubricant additives on Si-doped DLC: A comparative experimental and computational study of their tribological performance 胺和羟基功能化共聚物作为硅掺杂DLC的润滑添加剂：摩擦学性能的对比实验和计算研究

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-09 DOI: 10.1016/j.apsusc.2025.164586

Takeru Omiya , Enrico Pedretti , Manuel Evaristo , Pooja Sharma , Sara Inocencio , Albano Cavaleiro , Arménio C. Serra , Jorge F.J. Coelho , Maria Clelia Righi , Fábio Ferreira

{"title":"Amine- and hydroxyl-functionalized copolymers as lubricant additives on Si-doped DLC: A comparative experimental and computational study of their tribological performance","authors":"Takeru Omiya , Enrico Pedretti , Manuel Evaristo , Pooja Sharma , Sara Inocencio , Albano Cavaleiro , Arménio C. Serra , Jorge F.J. Coelho , Maria Clelia Righi , Fábio Ferreira","doi":"10.1016/j.apsusc.2025.164586","DOIUrl":"10.1016/j.apsusc.2025.164586","url":null,"abstract":"<div><div>Diamond-like carbon (DLC) coatings combined with functionalized copolymers are promising environmentally friendly lubrication systems and alternatives to metal containing additives. This study examines silicon-doped DLC (Si-DLC) lubricated with block copolymers bearing amine (DMAEMA) or hydroxyl (HEMA) groups. Friction and wear tests over 20–80 °C and under different loads show that both copolymers provide lower friction relative to nonfunctionalized PLMA, but only DMAEMA sustains low friction and low wear under 100 N boundary lubrication.</div><div>To clarify the mechanism, a distribution-based <em>ab initio</em> adsorption analysis was carried out on an amorphous Si-DLC model using a screening procedure across multiple surface sites and molecular orientations. The adsorption energy distributions show that DMAEMA frequently forms stable N–Si bonds (often ≤ − 2.0 eV) and dual N–Si + O–Si bonds (about − 2.4 eV), whereas HEMA centers near − 1.5 eV for OH–Si bonds, with weaker dual OH–Si + O–Si bonding (about − 2.0 eV). This separation of adsorption energy distributions accounts for the divergence in high load behavior.</div><div>Together, experiments and modeling underline the role of functional group chemistry in determining tribological performances on Si-DLC, and adsorption energy distributions, and guide additive selection for Si DLC in electric and hybrid drivetrains.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164586"},"PeriodicalIF":6.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025677","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

Gamma irradiation produces graphitic carbon nitride with decreased water affinity 伽马辐射产生的石墨氮化碳的亲水性降低

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-09 DOI: 10.1016/j.apsusc.2025.164585

Tosapol Maluangnont , Supakarn Worathat , Kanokwan Chaithaweep , Tanagorn Sangtawesin , Orawan Khamman , Narong Chanlek , Naratip Vittayakorn

{"title":"Gamma irradiation produces graphitic carbon nitride with decreased water affinity","authors":"Tosapol Maluangnont , Supakarn Worathat , Kanokwan Chaithaweep , Tanagorn Sangtawesin , Orawan Khamman , Narong Chanlek , Naratip Vittayakorn","doi":"10.1016/j.apsusc.2025.164585","DOIUrl":"10.1016/j.apsusc.2025.164585","url":null,"abstract":"<div><div>Absorption of water on surfaces of graphitic carbon nitride (g–C<sub>3</sub>N<sub>4</sub>) can be lessened by organic molecules functionalization or post-annealing treatment. In contrast to this knowledge, we show that <em>γ</em>-irradiation (10–400 kGy) of g–C<sub>3</sub>N<sub>4</sub> results in a defective material with decreased water affinity on surface and at bulk alike without those modifications. Irradiated g–C<sub>3</sub>N<sub>4</sub> samples show diminished water content (2.52 wt% to 1.91–0.96 wt%) and decreased crystallinity but slightly increased surface area, including slit-shape pores formation in platy particles. However, their IR spectra and optical bandgap do not change. Despite the radiation-induced increase of N/C, the diminished water content is consistently observed on surfaces by XPS, and at the depth ∼1 μm deeper by EDX. It is found that <em>γ</em>-irradiation generates a higher proportion of pyridinic N which disfavors water adsorption. This is correlated to a decreasing apparent activation energy of water evaporation in a <em>γ</em>-irradiated material compared to a pristine one (29 vs 47 kJ·mol<sup>−1</sup>). Also, <em>γ</em>-irradiation generates dangling bonds which facilitate bonding/agglomeration between particles such that the access of water to adsorption sites is prohibited. The demonstrated application of <em>γ</em>-irradiation to reduce water wettability, which is chemical-free and easily controllable, encourages further studies to other hydrophilic materials.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164585"},"PeriodicalIF":6.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025642","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 interaction mechanism of uranyl(VI) and plutonyl(VI) with boehmite and goethite surfaces: A combined study of density functional theory and ab initio molecular dynamics 了解铀酰（VI）和钚酰（VI）与薄水铝石和针铁矿表面的相互作用机理：密度泛函理论与从头算分子动力学的结合研究

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-09 DOI: 10.1016/j.apsusc.2025.164587

Xuying Zhou , Mingyang Shi , Xiujuan Cheng , Kunyang Cheng , Gang Jiang , Jiguang Du

{"title":"Understanding the interaction mechanism of uranyl(VI) and plutonyl(VI) with boehmite and goethite surfaces: A combined study of density functional theory and ab initio molecular dynamics","authors":"Xuying Zhou , Mingyang Shi , Xiujuan Cheng , Kunyang Cheng , Gang Jiang , Jiguang Du","doi":"10.1016/j.apsusc.2025.164587","DOIUrl":"10.1016/j.apsusc.2025.164587","url":null,"abstract":"<div><div>Improper disposal of large quantities of radionuclides can lead to environmental pollution. This study has investigated the adsorption and diffusion behaviors of actinyl(VI) cations, uranyl(VI), and plutonyl(VI) on the (010) surfaces of γ–AlOOH and α–FeOOH, both in vacuum and explicit solvation environments, using density functional theory (DFT) and ab initio molecular dynamics (AIMD) simulations. Our results show that actinyl(VI) is likely to be adsorbed on the (010) surfaces of γ–AlOOH and α–FeOOH via the inner-sphere (IS) binding mode, with adsorption energies ranging from −225.39 kJ/mol to −251.22 kJ/mol in a vacuum environment. Hydrogen bonding and van der Waals interactions, alongside ligand interactions, significantly influence the binding mode, as revealed by various chemical bonding analysis methods. The diffusion of actinyl(VI) on the (010) surfaces of γ–AlOOH and α–FeOOH is unlikely due to relatively high energy barriers, ranging from 79.71 kJ/mol to 159.11 kJ/mol. AIMD simulations at ambient temperature demonstrate that actinyl(VI) can be effectively anchored to the (010) surface of α–FeOOH in an explicit solvation environment. This study quantifies the mechanisms of actinyl(VI) immobilization on key mineral phases at an atomic scale under environmentally relevant conditions, providing crucial molecular-level insights for predicting the long-term fate of actinides in geochemical environments.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164587"},"PeriodicalIF":6.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025640","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

High-performance guanine biosensor design in 2D biphenylene networks: Insights from adsorption doping strategy and sensitivity modulation 二维联苯网络中高性能鸟嘌呤生物传感器设计：来自吸附掺杂策略和灵敏度调制的见解

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-09 DOI: 10.1016/j.apsusc.2025.164576

Cheng Luo , Zejiang Peng , Keyan Han , Wensheng Zhou , Xianbo Xiao , Tong Chen

{"title":"High-performance guanine biosensor design in 2D biphenylene networks: Insights from adsorption doping strategy and sensitivity modulation","authors":"Cheng Luo , Zejiang Peng , Keyan Han , Wensheng Zhou , Xianbo Xiao , Tong Chen","doi":"10.1016/j.apsusc.2025.164576","DOIUrl":"10.1016/j.apsusc.2025.164576","url":null,"abstract":"<div><div>Highly sensitive and selective molecular recognition is essential for nucleic acid detection; guanine is an important target for DNA damage and mutation recognition owing to its low oxidation potential and high electrochemical activity. Combining density functional theory with the non-equilibrium Green’s function, this study investigates the adsorption of three guanine isomers (G<sub>1</sub>, G<sub>5</sub>, and G<sub>8</sub>) on a two-dimensional (2D) biphenylene network (BPN) and the electrical response. Four adsorption configurations are constructed: intrinsic BPN, vacancy defects, Cu doping, and Cu concentration modulation. The sensing performance is analyzed by examining the change in work function, current–voltage characteristics, and sensitivity. Guanine isomers are chemisorbed in all four configurations, and the device currents and sensitivities are generally higher in the BPN zigzag direction than in the armchair direction. Cu substitution doping provides the optimal current response and signal discrimination, exhibiting device sensitivity as high as 95.7 % for G<sub>5</sub> adsorption along the zigzag direction. In the G<sub>1</sub> adsorption-doped system, the device current along the zigzag direction increases linearly with a bias of 0–1.0 V and reaches a maximum of 87.6 μA at 1.0 V. Moreover, vacancy defects significantly alter the work function, which is beneficial for interfacial modulation. By regulating the Cu concentration, the response current reaches 55.9 μA at 1.0 V, and the average sensitivity across the entire bias range is approximately 50 %, which is appropriate for low-power devices. Ultimately, substitution doping is effective, but vacancy defects assist in enhancing adsorption stability. This work provides theoretical support for the precise construction of 2D biosensors.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164576"},"PeriodicalIF":6.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145025641","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

Vacancy and impurity synergy in natural sphalerite: mechanistic insights into photocatalytic arsenic removal 天然闪锌矿中的空位和杂质协同作用：光催化除砷的机理

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-09-08 DOI: 10.1016/j.apsusc.2025.164572

Nagchoul Choi, Kanghee Cho, Soonjae Lee, Myoung-Soo Ko

{"title":"Vacancy and impurity synergy in natural sphalerite: mechanistic insights into photocatalytic arsenic removal","authors":"Nagchoul Choi, Kanghee Cho, Soonjae Lee, Myoung-Soo Ko","doi":"10.1016/j.apsusc.2025.164572","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.164572","url":null,"abstract":"Natural sphalerite, containing Fe impurities, develops lattice defects during crystallization, enhancing its photocatalytic activity. These defects create vacancy sites that broaden light absorption and expose surface-active metal sites, critical for activating H<sub>2</sub>O<sub>2</sub> to generate reactive oxygen species (ROS). In Fenton-like systems, ZnS acts as a co-catalyst, accelerating the Fe3<sup>+</sup>/Fe<sup>2+</sup> redox cycle via exposed Zn<sup>+</sup> sites, thereby improving As(III) removal efficiency. Spectroscopic and computational analyses confirm that vacancy defects optimize surface atom activation, directly linking ROS generation to defect-mediated mechanisms. Fe elution, driven by surface oxidation, further sustains the catalytic process. This study demonstrates ZnS’s dual role: (1) structural defects enhance light absorption and active site exposure, and (2) synergistic interaction with Fe promotes H<sub>2</sub>O<sub>2</sub> activation and ROS production. The optimized system achieves efficient As(III) degradation, highlighting ZnS’s potential as a sustainable heterogeneous catalyst for water treatment.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"69 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009450","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 purification and dispersion techniques for boron nitride nanotubes by introducing repulsive sites in polyethylene glycol block copolymer 通过在聚乙二醇嵌段共聚物中引入排斥位来改进氮化硼纳米管的纯化和分散技术

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-08 DOI: 10.1016/j.apsusc.2025.164579

Minsung Kang , Jong Chan Shin , Yong Tae Jeon , Ik-Tae Im , Se Gyu Jang , Minjae Lee , Seokhoon Ahn

{"title":"Enhanced purification and dispersion techniques for boron nitride nanotubes by introducing repulsive sites in polyethylene glycol block copolymer","authors":"Minsung Kang , Jong Chan Shin , Yong Tae Jeon , Ik-Tae Im , Se Gyu Jang , Minjae Lee , Seokhoon Ahn","doi":"10.1016/j.apsusc.2025.164579","DOIUrl":"10.1016/j.apsusc.2025.164579","url":null,"abstract":"<div><div>Boron nitride nanotubes (BNNTs) possess outstanding thermal properties and biocompatibility, yet their limited dispersibility in polar media such as polyethylene glycol (PEG) hinders their processability and application in composite materials and biomedical fields. In this study, a modified PEG-based block copolymer incorporating a pyrrolidinium salt capable of interacting with BNNT surfaces to give a repulsion force between BNNTs was developed to address this challenge. Benzamide and PEG segments along the modified PEG backbone interact with BNNT surfaces, enabling selective adsorption, whereas the pyrrolidinium N<sup>+</sup>/Br<sup>−</sup> ion pair imparts electrostatic repulsion and steric stabilization, thereby maintaining excellent dispersion stability for up to 7 days. The centrifugation enabled a high purification efficiency of up to 92 %, indicating successful removal of residual impurities. Notably, the concentrated BNNTs paste derived from the purified solution exhibited potential liquid crystalline behavior, suggesting a high degree of alignment and interaction between nanotubes. These results demonstrate a versatile and scalable strategy for producing high-purity, functionalized BNNTs, offering a promising platform for advanced applications in BNNT-based nanocomposites, including bioelectronics, thermal interface materials, and biomedical systems.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164579"},"PeriodicalIF":6.9,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145009445","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

Impact of interdigitated electrodes design on the low frequency and random telegraph noise of single-layer graphene micro ribbons 交错电极设计对单层石墨烯微带低频和随机电报噪声的影响

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-08 DOI: 10.1016/j.apsusc.2025.164567

Georgia Samara , Christoforos Theodorou , Alexandros Mavropoulis , Nikolaos Vasileiadis , Konstantinos Papagelis , Panagiotis Dimitrakis

引用次数: 0

A sustainable sulfated zirconia catalyst for high-yield biodiesel production: structure, activity, and mechanism 高产生物柴油可持续硫酸氧化锆催化剂：结构、活性和机理

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-08 DOI: 10.1016/j.apsusc.2025.164574

Amira K.F. Shaban , Xinchun Liu , Yanpeng Yuan , Yinyong Sun , Ahmed S. Abou-Elyazed

{"title":"A sustainable sulfated zirconia catalyst for high-yield biodiesel production: structure, activity, and mechanism","authors":"Amira K.F. Shaban , Xinchun Liu , Yanpeng Yuan , Yinyong Sun , Ahmed S. Abou-Elyazed","doi":"10.1016/j.apsusc.2025.164574","DOIUrl":"10.1016/j.apsusc.2025.164574","url":null,"abstract":"<div><div>Sulfated zirconia (SZ) as an important member of solid acid catalysts has attracted much attention. For this, various methods have been attempted to synthesize such materials. In this work, we report that sulfated zirconia with new crystal structure and abundant acid sites can be synthesized by calcining a ground mixture of ZrOCl<sub>2</sub>·8H<sub>2</sub>O and (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> at different temperatures under solvent-free conditions. The resultant materials were characterized using various techniques. Their catalytic performance was mainly evaluated by the esterification reaction of oleic acid with methanol. The results revealed that calcination temperature had a great influence on the structure and catalytic performance of these catalysts. A sample calcined at 450 ˚C named as ZrS-450 displayed a new crystal structure and superior catalytic activity in the esterification of oleic acid with methanol compared with conventional SZ owing to the presence of rich acid sites. In addition, it is demonstrated that ZrS-450 is a heterogenous catalyst and can be reused. These findings indicated that ZrS-450 could be a promising and robust solid acid catalyst for biodiesel production.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164574"},"PeriodicalIF":6.9,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145017411","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

Self-sustained photo–H2O2 system based on pure g-C3N4: High H2O2 production and rapid pollutant elimination without sacrificial agents 基于纯g-C3N4的自持光- H2O2系统：H2O2产量高，无需牺牲剂即可快速消除污染物

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-08 DOI: 10.1016/j.apsusc.2025.164570

Zhuo Liu , Yue Fan , Wanfeng Mao , Dongxu Wang , Lihong Zhao , Duo Meng , Tengfei Wu , Jiaqi Tang

{"title":"Self-sustained photo–H2O2 system based on pure g-C3N4: High H2O2 production and rapid pollutant elimination without sacrificial agents","authors":"Zhuo Liu , Yue Fan , Wanfeng Mao , Dongxu Wang , Lihong Zhao , Duo Meng , Tengfei Wu , Jiaqi Tang","doi":"10.1016/j.apsusc.2025.164570","DOIUrl":"10.1016/j.apsusc.2025.164570","url":null,"abstract":"<div><div>The pure g-C<sub>3</sub>N<sub>4</sub> miniature sphere (MCU) photocatalyst was synthesized via thermal polymerization of dicyandiamide, melamine, urea, and cyanuric acid. Without the addition of any sacrificial agent, MCU efficiently established a self-sustained photo–H<sub>2</sub>O<sub>2</sub> system under visible light. Unlike many composite photocatalysts, the pure g-C<sub>3</sub>N<sub>4</sub> system developed in this study achieves high photocatalytic performance without relying on heterojunction construction, thereby avoiding potential interface instability, simplifying synthesis, and ensuring long-term operational stability. As a result, MCU achieved a high H<sub>2</sub>O<sub>2</sub> production rate of 653.4 μM · h<sup>−1</sup> · g<sup>−1</sup> and realized 99.9 % degradation of Rhodamine B (RhB) within 10 min. In this system, the in situ generated H<sub>2</sub>O<sub>2</sub> was directly activated by photogenerated electrons to produce ·OH radicals, which played a crucial role in pollutant removal. The outstanding performance of MCU is attributed to its superior photoelectrochemical properties, high material stability, and the effective integration of H<sub>2</sub>O<sub>2</sub> generation with in situ activation, offering a promising strategy for pollutant elimination without sacrificial reagents. This work provides both theoretical insights and practical guidance for the rational design of efficient, stable, and green photo–H<sub>2</sub>O<sub>2</sub> systems.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164570"},"PeriodicalIF":6.9,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145017385","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

Fabrication of highly porous, plasma-reduced graphene oxide paper infused with electrically conductive polymer for an effective heat generation 高多孔、等离子体还原氧化石墨烯纸的制备，注入导电聚合物，用于有效的产热

IF 6.9 2区材料科学

Applied Surface Science Pub Date : 2025-09-08 DOI: 10.1016/j.apsusc.2025.164566

František Zelenák , Tatiana Buchlová , František Zažímal , Slavomír Sihelník , Lukáš Vrána , Dušan Kováčik , Pavol Gemeiner , Richard Krumpolec

{"title":"Fabrication of highly porous, plasma-reduced graphene oxide paper infused with electrically conductive polymer for an effective heat generation","authors":"František Zelenák , Tatiana Buchlová , František Zažímal , Slavomír Sihelník , Lukáš Vrána , Dušan Kováčik , Pavol Gemeiner , Richard Krumpolec","doi":"10.1016/j.apsusc.2025.164566","DOIUrl":"10.1016/j.apsusc.2025.164566","url":null,"abstract":"<div><div>This work presents preparation of a thin film made of plasma-reduced graphene oxide (rGO) paper infused with poly(3,4-ethylene-dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) via reduction-exfoliation of self-standing graphene oxide paper using diffuse coplanar surface barrier discharge operating in nitrogen atmosphere, atmospheric pressure and room temperature, followed by impregnation with PEDOT:PSS suspension via ultrasonic nebulization. Fast (2 s) reduction self-propagating wave is triggered in graphene oxide upon contact with plasma, spreading through the whole sample, producing a highly porous rGO structure that is suitable for further infusion with PEDOT:PSS resulting in a thin rGO/PEDOT:PSS composite film. Intermolecular synergistic interaction between rGO and PEDOT:PSS was observed, increasing the conductivity of the composite material as studied by XPS, FTIR, RAMAN, XRD and electrical methods. The effect of dopants in PEDOT:PSS on electrical conductivity and heating performance of prepared rGO/PEDOT:PSS composites is studied. Heating strips were assembled, and their heating capabilities were analyzed. Using DMSO as dopant in PEDOT:PSS resulted in the most significant increase in electrical conductivity measured by 4-point measurement (3613 S.m<sup>−1</sup>) and heating performance (80.9 °C at 10 V and 373.3 mW.cm<sup>−2</sup>). Upon heating, the conductivity of rGO/PEDOT:PSS increases, most significantly with DMSO as dopant (7910 S.m<sup>−1</sup>), indicating semiconductive behavior of the composite.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"715 ","pages":"Article 164566"},"PeriodicalIF":6.9,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145017170","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