Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-04DOI: 10.1016/j.apsusc.2026.166208
Ahmad Alem , Yining Huang , Nicole Wechner , Michael Feuchter , Matheus A. Tunes , Christoph Rameshan , Stefan Spirk , Christine Bandl
{"title":"Radio frequency O2-plasma treatment of carbon felts: stoichiometric insight into C1s and O1s XPS with correlated Raman and SEM characterization","authors":"Ahmad Alem , Yining Huang , Nicole Wechner , Michael Feuchter , Matheus A. Tunes , Christoph Rameshan , Stefan Spirk , Christine Bandl","doi":"10.1016/j.apsusc.2026.166208","DOIUrl":"10.1016/j.apsusc.2026.166208","url":null,"abstract":"<div><div>Surface functionalization of carbon plays a key role in tailoring their interfacial properties for applications in energy storage, energy conversion, structural composites, etc. In this work, radio frequency (RF) O<sub>2</sub>-plasma was employed to tailor the surface chemistry of C-felts. The influence of plasma power and treatment duration was studied. X-ray photoelectron spectroscopy (XPS) revealed that oxygen incorporation increases upon plasma treatment with powers up to 100 W, decreasing the C/O ratio significantly, followed by partial recovery at higher powers due to ion-induced etching. High-resolution C1s and O1s spectra were deconvoluted using a stoichiometric correlation strategy to improve peak assignments. Despite the inherent complexity of O1s spectra due to peak overlap and symmetric features, a consistent interpretation was achieved. Hence, by providing a stoichiometry-driven framework we improve the accuracy and consistency of XPS analysis by correlating the deconvolution of high-resolution C1s and O1s spectra. Raman spectroscopy confirmed the progressive increase in structural defects, with higher plasma powers and longer exposures. Scanning electron microscopy (SEM) revealed pronounced surface roughening and fiber etching after plasma. Overall, this work provides a deeper insight into surface modification of carbon felt utilizing O<sub>2</sub>-plasma and establishes a stoichiometric framework for interpreting complex XPS spectra of oxygen-functionalized carbons.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166208"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122220","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-04DOI: 10.1016/j.apsusc.2026.166078
Lunwu Zhao , Yu Kong , Jianglong Wang , Haihong Huang
{"title":"Regulating the interfacial microstructure and mechanical properties of Inconel 718 coatings via Dual-Arc Modulated plasma arc cladding","authors":"Lunwu Zhao , Yu Kong , Jianglong Wang , Haihong Huang","doi":"10.1016/j.apsusc.2026.166078","DOIUrl":"10.1016/j.apsusc.2026.166078","url":null,"abstract":"<div><div>Plasma arc cladding (PAC) is widely employed for surface modification; however, its inherently high heat input often leads to severe molten pool overheating, grain coarsening, and residual stress accumulation, ultimately degrading coating integrity and mechanical response. To achieve more precise control over surface heat transfer, we propose a dual-arc modulation strategy in which a portion of the transferred arc current (TAC) is replaced by non-transferred arc current (NTAC). This approach enables substantial heat-input reduction while maintaining comparable molten pool characteristics. A multiphysics model incorporating magnetohydrodynamic (MHD) effects was established to resolve coupled thermo-fluid–electromagnetic phenomena governing surface energy deposition and was validated experimentally through arc pressure measurements. The results demonstrate that increasing NTAC from 20 A to 100 A enables a simultaneous reduction in TAC from 120 A to 80 A, resulting in a 23.3% decrease in heat input to the substrate. When applied to Inconel 718 cladding, the strategy refined the solidification interface, leading to an 11.3% reduction in primary dendrite arm spacing (PDAS) and a 6.6% increase in surface microhardness. This study provides a controllable framework for regulating interfacial solidification behavior and enhancing surface mechanical properties in nickel-based superalloy coatings through precise dual-arc plasma modulation.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166078"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134605","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-08DOI: 10.1016/j.apsusc.2026.166204
Guowei Xia , Jun Xie , Qiqiang Chen , Qikai Wang , Chengming Hu , Zhaohua Zhang , Qing Xie
{"title":"Enhancing the insulation performance of aramid fiber epoxy resin by constructing a polar-nanofibrillation structure on the fiber surface","authors":"Guowei Xia , Jun Xie , Qiqiang Chen , Qikai Wang , Chengming Hu , Zhaohua Zhang , Qing Xie","doi":"10.1016/j.apsusc.2026.166204","DOIUrl":"10.1016/j.apsusc.2026.166204","url":null,"abstract":"<div><div>Aramid fiber, as a new generation of synthetic fiber material, has excellent insulation and mechanical properties and is widely used in high-voltage power transmission and transformation equipment. However, the problems of smooth surface and low chemical reactivity seriously restrict the combination with polymers and reduce the withstand voltage characteristics of insulation devices. Hence, this paper proposes to use aramid nanofibers (ANFs) obtained through nanofibrillation treatment to regulate the surface roughness of aramid fibers. Meanwhile, polar functional groups were introduced during the deprotonation process, successfully constructing polar-nanofibrillation structures on the aramid fiber surface, further regulating the polarity of fiber surfaces. Through insulation performance tests and molecular dynamics simulations, the influence of polar functional group types on the insulation performance of aramid fiber-epoxy resin composites was revealed. The results show that the flashover voltage of the modified AFEP has increased by 58.01% and the breakdown field strength has increased by 56.52%. Analysis suggests that different polarity treatments have different mechanisms for enhancing insulation performance. Among them, the amino group is achieved by enhancing the interface bonding between aramid fibers and epoxy resin, while the fluorine-containing groups improve the material’s ability to control charge distribution.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166204"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146138494","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}
{"title":"Effects of graphene and α-Al2O3 nano-additives on the fretting wear behavior of MAO coatings on Ti6Al4V alloy: a comparison of self-lubrication and hardness-enhancement strategies","authors":"Zhangyue Qin , Yali Zhang , Xiaogang Zhang , Xinlu Yuan , Zhongmin Jin","doi":"10.1016/j.apsusc.2026.166212","DOIUrl":"10.1016/j.apsusc.2026.166212","url":null,"abstract":"<div><div>Fretting wear of Ti6Al4V alloy for femoral stems in artificial hip joints is a major contributor to prosthesis loosening and subsequent revision surgeries. Micro-arc oxidation (MAO) emerges as a feasible and highly promising surface modification technique to mitigate this problem. In recent years, two key optimization strategies have been proposed to enhance wear resistance of MAO coatings: incorporating self-lubricating and high-hardness nanomaterials. However, existing studies have focused on sliding wear, while the effects of such nano-additives on fretting wear behavior of MAO coatings remain unclear. In this study, self-lubricating graphene (G) and high-hardness alumina (Al<sub>2</sub>O<sub>3</sub>) nanomaterials were incorporated into MAO coatings on Ti6Al4V alloy. The fretting wear behaviors of conventional, G-reinforced, and Al<sub>2</sub>O<sub>3</sub>-reinforced coatings under various fretting regimes were systematically investigated, and optimization mechanisms were elucidated. The results revealed that both graphene and alumina significantly enhanced coatings’ fretting wear resistance. The optimization mechanism of graphene was primarily manifested in promoting lubrication. During debris generation, pore compression, and coating damage, graphene progressively transferred and dispersed throughout the wear region, forming a smooth and uniform lubricating film on the coating surface. In contrast, alumina markedly improved coating hardness by bearing load, reinforcing bonding, and filling pores, thereby enhancing wear resistance. Notably, under the mixed fretting regime (MFR) and gross slip regime (GSR), G-reinforced coatings exhibited the lowest friction coefficient due to excellent lubricating ability. Nevertheless, across all fretting regimes, Al<sub>2</sub>O<sub>3</sub>-reinforced coatings exhibited the lowest wear rate due to superior fatigue resistance. Overall, alumina demonstrated more pronounced improvement and greater potential than graphene.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166212"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146138498","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-08DOI: 10.1016/j.apsusc.2026.166258
Yongfeng Qu , Wenbo Hu , Fei Wang , Boquan Ren , Hongxing Wang , Jijun Ding , Haixia Chen
{"title":"Surface activated bonding of (100)-β-Ga2O3 and Si: Annealing-induced evolution of interfacial microstructure and its effects on thermal transport","authors":"Yongfeng Qu , Wenbo Hu , Fei Wang , Boquan Ren , Hongxing Wang , Jijun Ding , Haixia Chen","doi":"10.1016/j.apsusc.2026.166258","DOIUrl":"10.1016/j.apsusc.2026.166258","url":null,"abstract":"<div><div>High‑performance β-Ga<sub>2</sub>O<sub>3</sub>/Si heterointerfaces are crucial for next‑generation power and optoelectronic devices, yet their thermal stability and interfacial thermal transport remain challenging due to lattice mismatch and thermal expansion mismatch. Herein, we fabricated β-Ga<sub>2</sub>O<sub>3</sub>(1<!--> <!-->0<!--> <!-->0)/Si heterointerface by surface-activated bonding and investigated the annealing-induced evolution of interfacial microstructures and their regulatory effects on interfacial thermal transport properties. A 16.2 nm-thick interlayer consisting of amorphous Si and Fe forms at the as-bonded heterointerface, while annealing at 1000 °C reduces its thickness to 4.3 nm and eliminates the characteristic signal of concentrated Fe. Molecular dynamics simulations indicate that these amorphous interlayers degrade interfacial thermal transport properties, with interfacial thermal conductance (ITC) decreasing as amorphous Si layer thickness and Fe atomic fraction increase. Amorphous Si reduces the ITC by 24% relative to the ideal interface, while Fe doping can further decrease the value by 29.5%. This work reveals the critical role of interfacial microstructures and elemental distributions in regulating interfacial thermal properties, and provides a theoretical basis for optimizing bonding processes and thermal management strategies.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166258"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146138490","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-06DOI: 10.1016/j.apsusc.2026.166234
ByeongJo Shim , K.C. Bhamu , Sojin Hong , Min Gyu Kim , Dongjun Kim , NaHyeon Hong , Jungwon Park , Sung Gu Kang , Chang Won Yoon
{"title":"Interstitial boron-driven Pt surface strain for durable methylcyclohexane dehydrogenation","authors":"ByeongJo Shim , K.C. Bhamu , Sojin Hong , Min Gyu Kim , Dongjun Kim , NaHyeon Hong , Jungwon Park , Sung Gu Kang , Chang Won Yoon","doi":"10.1016/j.apsusc.2026.166234","DOIUrl":"10.1016/j.apsusc.2026.166234","url":null,"abstract":"<div><div>Methylcyclohexane (<strong>MCH</strong>) is a promising liquid organic H<sub>2</sub> carrier for high-capacity, long-distance H<sub>2</sub> storage and transportation, owing to its high compatibility with existing fossil fuel infrastructure. Although platinum (Pt) catalysts are widely used for <strong>MCH</strong> dehydrogenation owing to their excellent activity and selectivity, catalytic deactivation at temperatures above 300 °C remains a significant challenge that hinders commercial deployment. In this study, we present a simple impregnation strategy to generate interstitially B-incorporated Pt on alumina, <strong>PtB-X/A</strong> (X = 0.8, 3.2, and 7.5), where X denotes the B/Pt molar ratio. <strong>PtB-0.8/A</strong> catalyst exhibited superior stability during continuous <strong>MCH</strong> dehydrogenation at 300 °C under a liquid hourly space velocity of 3.6 mL g<sub>cat</sub><sup>-1</sup>h<sup>−1</sup>, producing high-purity H<sub>2</sub> (>99.97 %) with a conversion of 95 % and a toluene selectivity of 99.99 %. Additionally, <strong>PtB-0.8/A</strong> demonstrated excellent stability over 200 h without noticeable deterioration. Experimental and theoretical studies revealed that doped boron atoms occupy interstitial sites, thereby elongating Pt–Pt bond length. Moreover, the amount of B doping was critical in determining catalytic performance. These findings highlight interstitial heteroatom doping as a promising alternative catalyst design strategy for enhancing the durability of <strong>MCH</strong> dehydrogenation, and suggest it as a feasible alternative to sulfur-based promoters.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166234"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134592","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-06DOI: 10.1016/j.apsusc.2026.166233
Jian Ma , Shihao Dong , Guofu Wei , Peng Liu , Mingdong Zhou , Yan Xu
{"title":"Dual interface confinement engineering via physical and chemical synergistic effects for ultrastable SrWO4/MAPbBr3@MS-4A composites","authors":"Jian Ma , Shihao Dong , Guofu Wei , Peng Liu , Mingdong Zhou , Yan Xu","doi":"10.1016/j.apsusc.2026.166233","DOIUrl":"10.1016/j.apsusc.2026.166233","url":null,"abstract":"<div><div>The Interface confinement strategy is crucial for achieving highly stable and enhanced photoluminescence in lead halide perovskite nanocrystals and expanding their optoelectronic applications. A dual-interface confinement strategy combining physical and chemical approaches was proposed to construct ternary SrWO<sub>4</sub>/MAPbBr<sub>3</sub>@MS-4A. Specifically, epitaxial growth of MAPbBr<sub>3</sub> quantum dots (QDs) on lattice-matched SrWO<sub>4</sub> was achieved within the channels of molecular sieve 4A (MS-4A). Benefiting from the porous confinement of MS-4A and surface defect passivation by SrWO<sub>4</sub>, the composites exhibit significantly enhanced photoluminescence along and high stability against ultraviolet (UV) irradiation, water, and heat. SrWO<sub>4</sub>/MAPbBr<sub>3</sub>@MS-4A exhibits temperature-dependent fluorescence intensity and peak shift, which respectively enable it to serve as a dual-mode optical thermometer with a maximum relative temperature sensitivity of 3.94% K⁻<sup>1</sup>. Furthermore, white LEDs fabricated with the composite achieve a high luminous efficiency of 37.12 lm·W<sup>−1</sup>, a correlated color temperature (CCT) of 8077 K, and a wide color gamut covering 102.5% of the NTSC standard. The WLED devices show excellent stability under long-term operation and high current. This work provides a simple and green approach for assembling lattice-matched multicomponent perovskite composites, achieving enhanced photoluminescence and stability for diverse optical applications.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166233"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134595","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-04DOI: 10.1016/j.apsusc.2026.166205
Zhengqiu Chen , Junyu Chen , Huaming Mao , Jungang Yin , Yu Ren , Wei Dai , Shuanglong Zhao , Hongwei Yang
{"title":"Stacking faults-rich silver catalysts synthesized via self-assembly for the efficient catalytic reduction of nitrophenols/nitroanilines","authors":"Zhengqiu Chen , Junyu Chen , Huaming Mao , Jungang Yin , Yu Ren , Wei Dai , Shuanglong Zhao , Hongwei Yang","doi":"10.1016/j.apsusc.2026.166205","DOIUrl":"10.1016/j.apsusc.2026.166205","url":null,"abstract":"<div><div>Nitrophenols and nitroanilines represent a series of organic pollutants that pose a significant environmental threat. Nevertheless, their catalytic reduction products — aminophenols and phenylenediamine — are regarded as valuable industrial intermediates. Therefore, identifying a highly active and cost-effective catalyst is essential for achieving the efficient catalytic conversion of nitrophenol and nitroaniline. Here, we employed a liquid-phase reduction approach to synthesize silver catalysts with varied morphologies and abundant defects (stacking faults and microporosity) through a rapid self-assembly process induced by gelatin. We found that the conformation of small polypeptide chains in gelatin can be regulated via controlled temperature gradients during synthesis, thereby directing the self-assembly of silver nanostructures into 2D nanosheets and 3D spherical nanoflowers. Spherical aberration transmission electron microscopy revealed the presence of abundant stacking faults on the surface of the silver catalyst. Therefore, the silver catalysts exhibited excellent catalytic activity for the catalytic reduction of 4-nitrophenol (4-NP), 2-nitrophenol (2-NP), and p-nitroaniline (p-NA), with reaction rate constants of 1.20 × 10<sup>−2</sup> s<sup>−1</sup>, 1.04 × 10<sup>−2</sup> s<sup>−1</sup>, and 1.23 × 10<sup>−2</sup> s<sup>−1</sup>, respectively. Furthermore, a detection limit of 50 nM for 4-NP was achieved using AgNSs-modified glassy carbon electrodes.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166205"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134610","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-02-08DOI: 10.1016/j.apsusc.2026.166249
Huan Li , Chen Wen , Liwen Yang , Guobao Xu
{"title":"Synergistical defect effects and hydrogen bond of carbon nanotubes improving electrochemical performance of PEO‐based lithium metal batteries","authors":"Huan Li , Chen Wen , Liwen Yang , Guobao Xu","doi":"10.1016/j.apsusc.2026.166249","DOIUrl":"10.1016/j.apsusc.2026.166249","url":null,"abstract":"<div><div>Although Polymer electrolyte (PEO)-based composite solid electrolyte (CSE) has attracted significant attention, it still suffers from low lithium ion migration and interfacial compatibility. Herein, we prepared functionalized multi-walled carbon nanotubes (FCNTs) via nitric acid oxidation and subsequently incorporated them into PEO matrix to fabricate CSEs (FCNTs-PEO). The introduced hydroxyl and carboxyl groups formed hydrogen bonds with the ether oxygen (EO) units of PEO chains, disrupting the ordered packing of polymer segments, increasing the amorphous fraction, and facilitating Li<sup>+</sup> migration. Additionally, acid etching generated jagged edge structures on the nanotube surfaces with localized π-electron states, which effectively weaken the electrostatic interaction between Li<sup>+</sup> and TFSI<sup>-</sup>, thereby promoting the dissociation of the lithium salt. Experimental results demonstrate that 3 wt% FCNTs-PEO electrolyte achieves an ionic conductivity of 5.24 × 10<sup>-4</sup> S cm<sup>−1</sup> at 60 °C. Moreover, the LiFePO<sub>4</sub> (LFP)||FCNTs-PEO||Li cells deliver the superior electrochemical performance of 79% and 72.5% capacity retention over 450 and 800 cycles at 2C and 0.5C, respectively.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166249"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146134582","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}
Applied Surface SciencePub Date : 2026-05-30Epub Date: 2026-01-30DOI: 10.1016/j.apsusc.2026.166073
Agnieszka Held , Julia Sobalska , Jolanta Kowalska-Kuś , Aldona Jankowska , Ewa Janiszewska , Krystyna Nowińska , Olena Tynkevych , Kinga Góra-Marek
{"title":"Iron-modified dendritic mesoporous silica nanoparticles as catalysts for propane and ethane oxidative dehydrogenation","authors":"Agnieszka Held , Julia Sobalska , Jolanta Kowalska-Kuś , Aldona Jankowska , Ewa Janiszewska , Krystyna Nowińska , Olena Tynkevych , Kinga Góra-Marek","doi":"10.1016/j.apsusc.2026.166073","DOIUrl":"10.1016/j.apsusc.2026.166073","url":null,"abstract":"<div><div>Olefin production through oxidative dehydrogenation (ODH) presents a sustainable alternative to conventional methods (mainly steam cracking, FCC, and non-oxidative dehydrogenation) with significant energy savings and reduced greenhouse gas emissions. This study explores the catalytic potential of dendritic mesoporous silica nanoparticles (DMSNs) and alumina–silica nanoparticles (AlDMSNs) modified with iron for ethane and propane ODH using N<sub>2</sub>O as an oxidant. A series of well-dispersed Fe-containing DMSN catalysts was synthesized through one-pot, impregnation, and ion-exchange methods using pure silica or Al-modified DMSN supports. Comprehensive characterization (SEM, TEM, NH<sub>3</sub>-TPD, H<sub>2</sub>-TPR, UV–Vis, N<sub>2</sub> adsorption, FT-IR, ICP-OES, and FT-IR&MS) confirmed the retention of the DMSN structure and, importantly, revealed variations in acidity and catalytic performance influenced by the preparation methods and the supports applied. Catalysts exhibited high activity and stability, with selectivity to ethene and propene ranging from 60 to 90%, depending on temperature and feed composition. Fe-DMSN, a one-pot-synthesized material, demonstrated superior time-on-stream stability, emphasizing its potential for efficient and scalable olefin production.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"729 ","pages":"Article 166073"},"PeriodicalIF":6.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146089237","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}