Saibin Han, Pengyang Zhang, Qutong Li, Xiufei Hu, Yan Peng, Lei Ge, Xiwei Wang, Mingsheng Xu, Xiangang Xu
{"title":"Surface evolution and stress relaxation in diamond induced by low-pressure high-temperature annealing","authors":"Saibin Han, Pengyang Zhang, Qutong Li, Xiufei Hu, Yan Peng, Lei Ge, Xiwei Wang, Mingsheng Xu, Xiangang Xu","doi":"10.1016/j.apsusc.2026.168239","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168239","url":null,"abstract":"Diamond exhibits outstanding properties, such as high-pressure resistance and radiation tolerance, and thus shows great potential for applications in devices operating under extreme conditions. However, its practical application remains constrained by challenges related to internal stress and crystalline perfection. In this work, low-pressure high-temperature (LPHT) annealing was performed on single-crystal diamond by tuning the annealing temperature and cooling time, and the evolution of stress and crystalline quality before and after annealing were systematically investigated. The results show that under 8000 Pa, 1500 °C, and a cooling time of 120 h, the overall integrity of the crystal is well preserved while the internal stress is significantly released: the optical path difference is reduced by ∼53%, and the full width at half maximum (FWHM) of the X-ray rocking curve decreases by ∼19%, indicating a substantial improvement in crystalline quality. Further interfacial analyses indicate that LPHT annealing induces the formation of a coherent interfacial structure on the diamond surface, which is distinct from the conventional van der Waals-bonded diamond-graphite interface. This reveals an ordered evolution of the surface/interface under LPHT annealing. This study provides a viable processing strategy for fabricating high-quality single-crystal diamond and offers a potential route for constructing diamond-graphite hybrid structures.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"18 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148852384","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":"Enhanced charge separation through oxygen vacancy-mediated anchoring of CoNi-ZIF on BiVO4 photoanodes","authors":"Yufeng Guan, Yuanyuan Zhang, Yaqi Zhang, Zeyuan Zhao, He Wang, Jiangang Jiang, Wenquan Zhou","doi":"10.1016/j.apsusc.2026.168216","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168216","url":null,"abstract":"Bismuth vanadate (BiVO<ce:inf loc=\"post\">4</ce:inf>) is extensively investigated for solar-driven photoelectrochemical (PEC) applications. However, its performance is largely limited by severe bulk charge recombination and sluggish surface reaction kinetics. In this work, a strategy combining defect engineering with in-situ self-assembly was developed to construct a planar photoanode, which integrates an oxygen-vacancy-rich BiVO<ce:inf loc=\"post\">4</ce:inf> (OV-BVO) skeleton with a strongly coupled bimetallic CoNi-zeolitic imidazolate framework (CoNi-ZIF) cocatalyst layer.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"36 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148852385","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":"One-step fabrication of CeO2/TiO2 composite ceramic coatings on titanium alloy by plasma electrolytic oxidation with haloperoxidase-like activity for antibacterial applications","authors":"Yunsong Xu, Zhongping Yao, Xiaorui He, Jun Wang, Xudong Zhang, Xiaohong Wu","doi":"10.1016/j.apsusc.2026.168241","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168241","url":null,"abstract":"Marine biofouling initiates with microbial attachment and early biofilm formation, posing challenges for titanium alloys. Herein, CeO<ce:inf loc=\"post\">2</ce:inf> nano-octahedra with exposed {1 1 1} facets and haloperoxidase (HPO)-like activity were synthesized and incorporated into a TiO<ce:inf loc=\"post\">2</ce:inf>-based coating on TA1 titanium by one-step plasma electrolytic oxidation (PEO). Structural analyses showed increased Ce incorporation and outward Ce enrichment, together with locally observed CeO<ce:inf loc=\"post\">2</ce:inf>(1 1 1)-related lattice features in Ce-6.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"23 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148884316","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":"Citric acid-assisted co-precipitation strategy for Ce-Mn/Ti-Si catalysts toward efficient low-temperature NH3-SCR","authors":"Xuewen Mu, Xue Bian, Yuming Yang, Yuting Bai, Yanping Li, Meng Zha, Yu Huang, Jing Wei","doi":"10.1016/j.apsusc.2026.168244","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168244","url":null,"abstract":"To meet the demand for low-temperature denitrification in non-electric industries, a citric acid (CA)-assisted co-precipitation strategy, integrated with Ti–Si composite support construction and Ce modification, was developed to regulate the synchronous precipitation and spatial distribution of multicomponent active species in Mn-based catalysts. This strategy effectively addresses phase segregation arising from asynchronous hydrolysis rates during conventional co-precipitation. The results show that the Ce<ce:inf loc=\"post\">0.05</ce:inf>-Mn/Ti<ce:inf loc=\"post\">80</ce:inf>Si<ce:inf loc=\"post\">20</ce:inf>-CA<ce:inf loc=\"post\">0.05</ce:inf> catalyst achieves a temperature window of 101–345 ℃ with NO conversion exceeding 80% and maintains good catalytic stability under the simultaneous presence of H<ce:inf loc=\"post\">2</ce:inf>O and SO<ce:inf loc=\"post\">2</ce:inf>. Structural characterization reveals that the CA-mediated multidentate coordination inhibits the growth of TiO<ce:inf loc=\"post\">2</ce:inf> crystal nuclei during co-precipitation, increases the specific surface area and dispersion of active components, promotes an increase in the proportions of surface Mn<ce:sup loc=\"post\">4+</ce:sup>, Ce<ce:sup loc=\"post\">3+</ce:sup>, and adsorbed oxygen, while also optimizing the distribution of acid sites and enhancing low-temperature reducibility. <ce:italic>In situ</ce:italic> DRIFTS results indicate that under the tested condition of 200 °C, the NH<ce:inf loc=\"post\">3</ce:inf> species adsorbed on Lewis acid sites on the catalyst surface possess higher reactivity, whereas some adsorbed NO<ce:inf loc=\"post\">x</ce:inf> species remain relatively stable, suggesting that the low-temperature NH<ce:inf loc=\"post\">3</ce:inf>-SCR reaction over this catalyst preferentially follows an Eley–Rideal (E-R) pathway involving NH<ce:inf loc=\"post\">3</ce:inf> adsorbed on Lewis acid sites.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"2 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148884315","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}
Archana N. Inamdar, Prafulla K. Jha, Krzysztof Kurzydłowski
{"title":"Defect engineering in 1 T-SnSe2 for enhanced hydrogen evolution reaction: a first-principles investigation","authors":"Archana N. Inamdar, Prafulla K. Jha, Krzysztof Kurzydłowski","doi":"10.1016/j.apsusc.2026.168218","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168218","url":null,"abstract":"Tin diselenide (SnSe<ce:inf loc=\"post\">2</ce:inf>), a layered two-dimensional semiconductor, has attracted considerable attention as a potential electrocatalyst for the hydrogen evolution reaction (HER), although its pristine basal plane exhibits intrinsically limited catalytic activity. Herein, density functional theory (DFT) calculations are employed to systematically investigate the influence of intrinsic point defects, including V<ce:inf loc=\"post\">Se</ce:inf>, <mml:math altimg=\"si11.svg\"><mml:msub><mml:mi>V</mml:mi><mml:mrow><mml:mi>S</mml:mi><mml:msub><mml:mi>e</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:msub></mml:math>, V<ce:inf loc=\"post\">Sn–3Se</ce:inf>, and V<ce:inf loc=\"post\">Sn–6Se</ce:inf>, on the HER performance of SnSe<ce:inf loc=\"post\">2</ce:inf> monolayers. Defect engineering significantly modifies the local electronic structure, creates catalytically active sites, and activates the inert basal plane by optimizing the hydrogen adsorption behaviour. Among the investigated defects, hydrogen adsorption at the Se site of the <mml:math altimg=\"si11.svg\"><mml:msub><mml:mi>V</mml:mi><mml:mrow><mml:mi>S</mml:mi><mml:msub><mml:mi>e</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:msub></mml:math> defect exhibits the most favorable Gibbs free energy of hydrogen adsorption (ΔG<ce:sup loc=\"post\">H</ce:sup> = 0.02 eV), while the V<ce:inf loc=\"post\">Sn–6Se</ce:inf> defect shows ΔG<ce:sup loc=\"post\">H</ce:sup> = -0.08 eV, demonstrating a substantial enhancement in basal-plane catalytic activity. To further evaluate catalytic performance under realistic operating conditions, implicit aqueous solvation effects were incorporated using the QE-Environ approach. The solvent environment produces only minor changes in the adsorption energetics while preserving the relative HER activity of the defective systems, confirming the robustness of the predicted active sites. Electronic structure analysis reveals that defect-induced charge redistribution and orbital hybridization optimize the hydrogen binding strength, thereby enhancing HER activity. These findings demonstrate that vacancy engineering effectively activates the basal plane of SnSe<ce:inf loc=\"post\">2</ce:inf> and provides a viable strategy for developing efficient noble-metal-free electrocatalysts for sustainable hydrogen production.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"38 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148852389","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}
Kai Yuan, Tianyue Tong, Yaoyao Linghu, Shaohui Guo
{"title":"Activating N-site for CO electroreduction via Cu doping in WSi2N4","authors":"Kai Yuan, Tianyue Tong, Yaoyao Linghu, Shaohui Guo","doi":"10.1016/j.apsusc.2026.168121","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168121","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"1 1","pages":"168121"},"PeriodicalIF":6.7,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148755262","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}
Menghan Li, Shuang Liu, Lin Jiang, Siyuan Yin, Jiawei Wang, Yang Qin, Weibo Duan, Junhua Wang, Tianyan Yu, Jing Li
{"title":"Ag-mesh-functionalized solar-rejection infrared multilayer coatings for surface-conductive spaceborne optical windows","authors":"Menghan Li, Shuang Liu, Lin Jiang, Siyuan Yin, Jiawei Wang, Yang Qin, Weibo Duan, Junhua Wang, Tianyan Yu, Jing Li","doi":"10.1016/j.apsusc.2026.168110","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168110","url":null,"abstract":"Spaceborne infrared windows require solar-radiation rejection, broadband infrared transmission, and surface electrical conduction, whereas conventional dielectric multilayer coatings are intrinsically insulating. Herein, a ZnS-protected Ag mesh is integrated with a spectrally selective Ge/ZnS/YbF<ce:inf loc=\"post\">3</ce:inf> multilayer on Ge to construct a surface conductive window for space optical applications. The dielectric multilayer rejects visible–near-infrared solar radiation and transmits the target infrared bands, while the periodic Ag mesh provides continuous in-plane conduction. A three-level optical-loss model separates mesh-induced attenuation into geometrical open-area loss, diffraction-order collection loss, and additional metal-related loss. In parallel, a coupon-based equivalent sheet-resistance metric and resistor-network model quantify the geometry-dependent conduction behavior of Ag meshes. Increasing the mesh period or decreasing the linewidth improves infrared transmittance, whereas the opposite changes enhance conductivity. The optimized P800-W30 sample achieves an average reflectance of 93.24% over 0.4–1.6 μm, an effective infrared transmittance of 80.49% over 2.1–2.5 and 3.6–14 μm, and an equivalent sheet resistance of 9.93 ± 0.01 Ω sq<ce:sup loc=\"post\">-1</ce:sup>. Its resistance increased by only 2.6% after 120 days of ambient exposure. This work provides an interpretable surface-engineering strategy for transforming insulating infrared dielectric coatings into multifunctional optical coatings with preserved spectral selectivity and tunable surface conductivity.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"17 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148767570","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}