Applied Surface Science最新文献_第10页

Hierarchical TiO2@carbon nanofiber aerogels with enhanced visible-light photocatalytic performance for environmental remediation 具有增强可见光催化性能的纳米纤维气凝胶用于环境修复

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163541

Jintao Zhou , Jiaqi Zhao , Enjie Wu , Yuanjun Liu , Xupin Zhuang

{"title":"Hierarchical TiO2@carbon nanofiber aerogels with enhanced visible-light photocatalytic performance for environmental remediation","authors":"Jintao Zhou , Jiaqi Zhao , Enjie Wu , Yuanjun Liu , Xupin Zhuang","doi":"10.1016/j.apsusc.2025.163541","DOIUrl":"10.1016/j.apsusc.2025.163541","url":null,"abstract":"<div><div>Developing efficient visible-light-driven photocatalysts for environmental remediation remains challenging due to the limited light utilization and rapid charge recombination in traditional TiO<sub>2</sub>-based materials. Herein, we report a facile approach to fabricate hierarchical TiO<sub>2</sub>@carbon nanofiber aerogels (TiO<sub>2</sub>@CNFAs) with uniformly distributed TiO<sub>2</sub> nanoparticles on a carbon nanofiber skeleton. The unique hierarchical structure provides extensive surface area (up to 153.7 m<sup>2</sup>/g) and intimate TiO<sub>2</sub>/carbon interfacial contact, while the rational band structure design effectively narrows the bandgap to 2.33 eV for enhanced visible light absorption. The optimized interface engineering leads to remarkably improved charge separation efficiency, evidenced by a 16-fold increase in photocurrent density (3.63 μA/cm<sup>2</sup>) and extended carrier lifetime (4.22 ns). These advantages enable superior photocatalytic performance with over 90 % removal efficiency for three dyes (Methylene Blue, Congo Red, and Rhodamine B) and one antibiotic (Tetracycline) under xenon lamp irradiation, and achieving 93.69 % degradation of Rhodamine B under natural sunlight within 240 min. This work provides a promising strategy for designing efficient visible-light-driven photocatalysts for environmental applications.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"707 ","pages":"Article 163541"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113491","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

Adsorption-induced lattice weakening: understanding the mechanism of cysteine-accelerated pyrite oxidation 吸附诱导的晶格弱化：了解半胱氨酸加速黄铁矿氧化的机理

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163594

Tong Liu , Yutian Hu , Nan Chen , Hongrui Ding , Chuanping Feng , Wang Lu

{"title":"Adsorption-induced lattice weakening: understanding the mechanism of cysteine-accelerated pyrite oxidation","authors":"Tong Liu , Yutian Hu , Nan Chen , Hongrui Ding , Chuanping Feng , Wang Lu","doi":"10.1016/j.apsusc.2025.163594","DOIUrl":"10.1016/j.apsusc.2025.163594","url":null,"abstract":"<div><div>Pyrite (FeS<sub>2</sub>) oxidation is pivotal but often hindered by passivation. Cysteine (Cys) accelerates this oxidation and overcomes passivation, though the mechanism is debated. This study combines electrochemistry and DFT to reveal Cys acts primarily by weakening the pyrite lattice upon adsorption. Electrochemical results confirm Cys uniquely eliminates passivation and enhances interfacial charge dynamics. Crucially, DFT calculations (via COHP analysis) show Cys chemisorption through an interfacial Fe-S bond reconfigures pyrite’s electronic structure, occupying anti-bonding states of adjacent Fe-S lattice bonds below the Fermi level. This directly indicates weakening of these lattice bonds near the adsorption site. We propose this lattice destabilization, lowering the energy barrier for atom removal, is the primary mechanism for Cys-accelerated oxidation, rather than solely enhanced charge transfer or passivation prevention. These findings offer new atomic-level insight into organic modulation of mineral reactivity via substrate bond alteration, impacting biogeochemistry, bioleaching, and materials science.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163594"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113487","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

Tuning Mn-based ion sieves via different valence cation substitution (Na+/Mg2+/Al3+) for enhanced Li+ separation 通过不同价离子取代（Na+/Mg2+/Al3+）调整mn基离子筛以增强Li+的分离

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163591

Zhaxi Cuo , Xiaoyan Liu , Renzhen Wangjia , Likun Chang , Dongdong Wang

{"title":"Tuning Mn-based ion sieves via different valence cation substitution (Na+/Mg2+/Al3+) for enhanced Li+ separation","authors":"Zhaxi Cuo , Xiaoyan Liu , Renzhen Wangjia , Likun Chang , Dongdong Wang","doi":"10.1016/j.apsusc.2025.163591","DOIUrl":"10.1016/j.apsusc.2025.163591","url":null,"abstract":"<div><div>A series of metal ion (Na<sup>+</sup>, Mg<sup>2+</sup>, Al<sup>3+</sup>)-doped lithium manganese oxides (LMOs) were synthesized via sol–gel synthesis coupled with controlled calcination for enhanced lithium extraction applications. Structural characterization through XRD, SEM, TEM and BET surface area analysis revealed well-defined cubic spinel structures (Fd-3 m space group) with octahedral coordination geometry and hierarchical mesoporosity. Adsorption evaluations using LiCl solutions demonstrated that cation doping significantly enhanced lithium uptake capacities. The optimized materials demonstrated respective Li<sup>+</sup> adsorption capacities of 26.71, 27.47, and 32.95 mg g<sup>−1</sup> for Na<sup>+</sup>-, Mg<sup>2+</sup>-, and Al<sup>3+</sup>-modified LMOs, representing 2.4 %, 5.4 %, and 22.5 % improvements over the pristine LMO (26.07 mg g<sup>−1</sup>). Notably, the Al<sup>3+</sup>-modified adsorbent (LMO-Al) exhibited exceptional cycling stability, retaining 86.33 % of initial capacity through five adsorption–desorption cycles – significantly higher than the 79.85 % retention observed in pristine LMO. After 5 adsorption/desorption cycles, the Mn dissolution loss of HMO-Al was 1.25 %, and it was smaller than that of 2.34 % for HMO. This enhanced performance can be attributed to the superior crystallinity, abundant chemically adsorbed oxygen and higher average valence state of manganese which effectively reduced the content of Mn<sup>3+</sup> in the lithium-ion sieve, thereby suppressing the Jahn-Teller effect and the disproportionation reaction of Mn<sup>3+</sup> in LMO-Al. These findings provide fundamental insights into structure–property relationships in lithium ion sieves while guiding the rational design of high-performance adsorbents for sustainable lithium extraction from saline resources.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163591"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104259","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

Rational construction of multilayer NiCo-MOF@MnO2 heterostructures with optimized charge storage behavior for asymmetric supercapacitors 非对称超级电容器多层NiCo-MOF@MnO2异质结构的合理构建及优化电荷存储行为

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163595

Jien Li , Rongling Du , Ruipeng Wang , Jinglv Feng , Shuang Luo

{"title":"Rational construction of multilayer NiCo-MOF@MnO2 heterostructures with optimized charge storage behavior for asymmetric supercapacitors","authors":"Jien Li , Rongling Du , Ruipeng Wang , Jinglv Feng , Shuang Luo","doi":"10.1016/j.apsusc.2025.163595","DOIUrl":"10.1016/j.apsusc.2025.163595","url":null,"abstract":"<div><div>Manganese dioxide (MnO<sub>2</sub>) is a promising supercapacitor electrode material with its high theoretical capacitance, abundant resources, and eco-friendliness. However, poor ion transport and volume expansion during cycling hinder its practical performance. In contrast, metal–organic frameworks (MOFs) provide extensive surface area and structural versatility but suffer from low intrinsic conductivity, limiting their direct application as electrodes. Here, a MOF-derived NiCo-MOF@MnO<sub>2</sub> heterostructure is successfully anchored onto activated carbon cloth (AC) to prepare a self-supported electrode (NCM@MO-1) through a rational synthetic regulation strategy. The NCM@MO-1 electrode presents a unique overlapping massive nanostructure conducive to exposing more active sites and shortening the diffusion path of electrolyte ions. Owing to its optimized structure and composition, the NCM@MO-1 electrode exhibits improved specific capacitance of 15.2 F/cm<sup>2</sup> at 2 mA/cm<sup>2</sup> and ultrahigh rate performance of 65 % at 50 mA/cm<sup>2</sup>. Moreover, the NCM@MO-1//annealed AC (AAC) asymmetric supercapacitor (ASC) achieves a superb energy density of 1.191 mWh/cm<sup>2</sup> at 1.715 mW/cm<sup>2</sup> and an exceptional cycle durability (about 85.67 % retention over 10,000 cycles). The meticulously prepared NCM@MO-1 electrode presents significant potential for diverse applications, especially in the realm of high-performance supercapacitors, where the material is poised to serve as a key enabler for next-generation devices.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163595"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113484","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

Synthesis of transparent and flexible superhydrophobic PDMS-EP/SiO2 coating with excellent mechanical and chemical durability 具有优异机械和化学耐久性的透明柔性超疏水性PDMS-EP/SiO2涂层的合成

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163586

Jianfang Sun , Yong Chen , Ji Li , Jingying Su , Shengpeng Huang , Yanan Zhang , Fenghua Su

{"title":"Synthesis of transparent and flexible superhydrophobic PDMS-EP/SiO2 coating with excellent mechanical and chemical durability","authors":"Jianfang Sun , Yong Chen , Ji Li , Jingying Su , Shengpeng Huang , Yanan Zhang , Fenghua Su","doi":"10.1016/j.apsusc.2025.163586","DOIUrl":"10.1016/j.apsusc.2025.163586","url":null,"abstract":"<div><div>Superhydrophobic (SHP) coatings with transparency, flexibility, and self-cleaning properties are highly desirable for many applications. However, developing SHP coatings with excellent mechanical and chemical durability remains a challenge. In this work, the epoxy resin (EP) was modified with hydroxy-terminated polydimethylsiloxane (HO-PDMS) to improve its hydrophobicity and flexibility. Nano-silica (SiO<sub>2</sub>) was added as reinforcing filler to prepare the PDMS-EP/SiO<sub>2</sub> coating. The coatings exhibited superhydrophobicity with a high water contact angle (WCA) of 155.5 ± 2.8° and a sliding angle (SA) less than 1° when the loading mass of nano-silica was 0.2 g. The coating maintained superhydrophobicity after 600 cm continuous rubbing by sandpaper, suggesting that the coating had remarkable mechanical durability. The coating also exhibited superior chemical stability because it retained strong hydrophobic property after immersing in strong acid and alkali solutions. Interestingly, the coating exhibited high transparency with an average transmittance of 80.7 % and outstanding flexibility as confirmed by bending-torsion tests. Moreover, the as-prepared coating also showed strong self-cleaning properties for effectively removing dust pollutants and excellent resistance to wetting from various liquids. It is believed that the facile and economical method offers an effective strategy and promising industrial applications for fabricating transparent, flexible and chemically stable superhydrophobic coatings.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"707 ","pages":"Article 163586"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113486","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

Tailoring interfacial architectures in aramid fiber composites: Integrated gains in mechanical strength, dielectric performance, and thermal stability 芳纶纤维复合材料的界面结构：机械强度、介电性能和热稳定性的综合增益

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-21 DOI: 10.1016/j.apsusc.2025.163575

Ailin Peng , Chaofeng Chen , Ziqiu Zeng , Zhenlei Wang , Xiaobo Liu , Yumin Huang

{"title":"Tailoring interfacial architectures in aramid fiber composites: Integrated gains in mechanical strength, dielectric performance, and thermal stability","authors":"Ailin Peng , Chaofeng Chen , Ziqiu Zeng , Zhenlei Wang , Xiaobo Liu , Yumin Huang","doi":"10.1016/j.apsusc.2025.163575","DOIUrl":"10.1016/j.apsusc.2025.163575","url":null,"abstract":"<div><div>Aramid fiber composites, as high-performance materials, are widely used in aerospace, military and other fields. As the “bridge” connecting the fiber and resin, the interface directly determines the overall performance of the composite material. In this work, as one of the representatives of thermosetting high-performance resins, benzoxazine-phthalonitrile (BA-Ph) resin was selected as a resin matrix for aramid composites because of its low-temperature autocatalytic properties, thermal stability and chemical resistance. To enhance interfacial compatibility, aramid fibers were synergistically modified via interfacial engineering of polydopamine@polyethyleneimine (PDA@PEI) co-crosslinked networks. The modified fibers were subsequently integrated with BA-Ph resin to fabricate composite laminates. The results demonstrated that the synergistic PDA/PEI modification improved interfacial adhesion, enabling efficient stress transfer between fibers and the matrix. The AF@(PDA + PEI) composite exhibited improved thermal stability and mechanical properties compared to the unmodified material. Notably, the interlaminar shear strength increased by 50.53 % (47.72 MPa) and the impact strength rose by 77.32 % (78.64 MPa), demonstrating that the bimolecular synergistic effect at the interface effectively achieves high strength and toughness of the composites. More importantly, the surface-grafted functional groups on the aramid fibers actively promoted benzoxazine resin curing. This interfacial engineering provides novel insights into designing and optimizing resin composites.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163575"},"PeriodicalIF":6.3,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113488","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

Laser-assisted fabrication of new ultrasensitive sensors based on Pd/Graphene/Copper heterogeneous layers for glucose detection 基于Pd/石墨烯/铜非均相层的新型超灵敏葡萄糖检测传感器的激光辅助制造

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-20 DOI: 10.1016/j.apsusc.2025.163588

Chawki Awada , Hassan H. Hammud , Waleed A. Aljamhi , Stefano Boscarino , Antonino Scandurra , Francesco Ruffino

{"title":"Laser-assisted fabrication of new ultrasensitive sensors based on Pd/Graphene/Copper heterogeneous layers for glucose detection","authors":"Chawki Awada , Hassan H. Hammud , Waleed A. Aljamhi , Stefano Boscarino , Antonino Scandurra , Francesco Ruffino","doi":"10.1016/j.apsusc.2025.163588","DOIUrl":"10.1016/j.apsusc.2025.163588","url":null,"abstract":"<div><div>In this work, we report for the first time a new Palladium (Pd)/Graphene (GR)/Copper (Cu) electrode fabricated with a new way that consists of pulsed liquid laser ablation (PLAL) and drop casting. Pd nanoparticles fabricated by PLAL were dropped into a single layer of graphene and dried at 80 °C. Pd/GR/Cu electrodes were tested towards the detection of glucose using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). With both techniques the detection limit was 0.5 mM and the quantification range was between 0.5 mM to 13.0 mM. The sensitivity values were high, 0.245 <span><span>mA.mM</span><svg><path></path></svg></span><sup>−1</sup>.cm<sup>−2</sup> by CV and 81.3 Ohm<span><span>.mM</span><svg><path></path></svg></span><sup>−1</sup>.cm<sup>−2</sup> by EIS. The findings underscore the potential of this novel Pd/GR/Cu electrode as a highly sensitive and stable non-enzymatic sensor for glucose detection, offering significant advancements in biosensing technology.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163588"},"PeriodicalIF":6.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104263","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

One-point covalent immobilization of a xylanase on elastomer: effects of surface stretching on enzymatic activity 弹性体上木聚糖酶的一点共价固定：表面拉伸对酶活性的影响

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-20 DOI: 10.1016/j.apsusc.2025.163554

Maxime Artico , Cécile Formosa-Dague , Dimitri Kamak , Frédéric Peruch , Anne-Françoise Mingotaud , Clément Roux , Cédric Y. Montanier

{"title":"One-point covalent immobilization of a xylanase on elastomer: effects of surface stretching on enzymatic activity","authors":"Maxime Artico , Cécile Formosa-Dague , Dimitri Kamak , Frédéric Peruch , Anne-Françoise Mingotaud , Clément Roux , Cédric Y. Montanier","doi":"10.1016/j.apsusc.2025.163554","DOIUrl":"10.1016/j.apsusc.2025.163554","url":null,"abstract":"<div><div>Protein immobilization on solid surfaces is a prevalent strategy in biotechnology and industry, offering advantages in terms of stability and reusability. Various methods, including covalent attachment, adsorption, covalent cross-linking, and entrapment, have been developed, with challenges in adapting these techniques to enzymes due to their catalytic pockets. In a previous study, we introduced a method for grafting the glycoside hydrolase <em>Neocallimastix patriciarum endo</em>-β-1,4-xylanase (<em>Np</em>Xyn11A) onto paramagnetic beads, preserving its biological activity. Here, we extend this approach to polymeric surfaces, specifically polyisoprene (PI) and polydimethylsiloxane (PDMS), known for their elasticity. The surfaces are plasma-activated and functionalized with maleimide functions to immobilize the engineered protein Jo through a one-point thiol-maleimide click reaction. In a second step, the xylanase fused to the protein In is immobilized on the membrane by a spontaneous and specific covalent bond between Jo and In. A custom device is employed to stretch the elastomer surfaces, altering the distance between immobilized enzymes. The specific activity of the immobilized xylanase, evaluated with a chromogenic substrate, mirrors that of the free enzyme in solution. However, the use of natural polysaccharides reveals activity variations based on the extent of surface stretching, providing insights into the impact of spatial proximity on enzyme dynamics. Our study contributes to overcoming limitations in traditional enzyme immobilization, offering valuable insights into the dynamics of multi-enzymatic complexes.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163554"},"PeriodicalIF":6.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104118","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

Atomic level mechanism of nanoripple formation on silicon by oblique angle irradiation with molecular nitrogen ions 分子氮离子斜角照射下硅表面纳米纹形成的原子水平机理

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-20 DOI: 10.1016/j.apsusc.2025.163576

Khushboo Bukharia , Prasanta Karmakar , Jagrati Dwivedi , Mukul Gupta , V.R. Reddy , Pallavi Pandit , Sarathlal Koyiloth Vayalil , Thomas F. Keller , Andreas Stierle , Stephan V. Roth , Ajay Gupta

{"title":"Atomic level mechanism of nanoripple formation on silicon by oblique angle irradiation with molecular nitrogen ions","authors":"Khushboo Bukharia , Prasanta Karmakar , Jagrati Dwivedi , Mukul Gupta , V.R. Reddy , Pallavi Pandit , Sarathlal Koyiloth Vayalil , Thomas F. Keller , Andreas Stierle , Stephan V. Roth , Ajay Gupta","doi":"10.1016/j.apsusc.2025.163576","DOIUrl":"10.1016/j.apsusc.2025.163576","url":null,"abstract":"<div><div>Reactive ion beam sputtering is an efficient tool to produce modifications in the surface topography in the form of periodic nanoripples with controlled modulation period and amplitude. In the present work, the atomic level processes responsible for nanoripple formation on silicon surface by oblique angle irradiation with molecular nitrogen ions have been studied. A variety of complementary techniques have been used to elucidate the structural and compositional changes occurring in the surface and sub-surface regions with irradiation fluence. It is shown that the implanted nitrogen ions react with the Si substrate to form Si<sub>3</sub>N<sub>4</sub> phase in the subsurface region. GI-SAXS measurements suggest that the buried nitride layer gets phase separated to generate periodic variation in the density at nanometer length scale. With increasing fluence, the surface layer of Si gets sputtered out and the nitride layer reaches the surface. At this stage an unequal sputtering of nitride-rich and nitride-depleted regions results in development of surface instability which is already periodic in nature. Further irradiation results in development of well-defined surface ripples as a combined effect of composition-dependent and curvature-dependent sputtering. A direct chemical evidence for the phase separation of the nitride layer comes from the Auger electron scanning microscopy.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163576"},"PeriodicalIF":6.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104231","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

Susceptibility of different pigments to irradiation by two lasers with different pulse duration and wavelength 不同颜料对两种不同脉冲持续时间和波长激光照射的敏感性

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-05-20 DOI: 10.1016/j.apsusc.2025.163581

L. Andrés-Herguedas , T. Rivas , A. Ramil , D. Jiménez-Desmond , J.S. Pozo-Antonio

{"title":"Susceptibility of different pigments to irradiation by two lasers with different pulse duration and wavelength","authors":"L. Andrés-Herguedas , T. Rivas , A. Ramil , D. Jiménez-Desmond , J.S. Pozo-Antonio","doi":"10.1016/j.apsusc.2025.163581","DOIUrl":"10.1016/j.apsusc.2025.163581","url":null,"abstract":"<div><div>The effects of available laser treatments on paint pigments must be taken into consideration for effective cleaning of wall painting. Selection of the most appropriate parameters of the laser is essential for optimal cleaning. This study analysed the effects of two lasers operating at different wavelength and pulse duration (Avia Nd:YVO<sub>4</sub> emitting at 355 nm, with a pulse duration of 25 ns, and Spirit system laser at 1040 nm and 380 fs) on pigments used in wall paintings (tempera and rock art). Specifically, pressed tablets of carbonates (azurite, malachite and lead white), sulphides (cinnabar and orpiment), oxide (hematite) and a natural mixture of silicates and oxides (red earth) were prepared and irradiated for initial measurement of laser damage thresholds and then, higher fluence levels were applied to induce severe changes on surfaces.</div><div>Despite of fluences used with the Spirit (IR-fs) were higher than those with Avia (UV-ns), colour changes were generally higher in the latter. Regardless of the laser, sulphides were the most susceptible pigments, and cinnabar underwent intense darkening even at minimum fluence, whereas lead white was the most resistant pigment. Colour changes were attributed to mineralogical and chemical changes in some cases and to micromorphological changes in others.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"706 ","pages":"Article 163581"},"PeriodicalIF":6.3,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144104258","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