Applied Surface Science最新文献

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Direct bonded aluminum on silicon nitride substrates via silver-aluminum interfacial reactions 通过银铝界面反应在氮化硅衬底上直接键合铝
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-31 DOI: 10.1016/j.apsusc.2026.168000
Donglin Zhang, Duhe Wen, Yuan Zhang, Luke Ma, Shuquan Chen, Miao Jiang, Xiuchen Zhao, Chin C. Lee, Gang Zhang, Yongjun Huo
{"title":"Direct bonded aluminum on silicon nitride substrates via silver-aluminum interfacial reactions","authors":"Donglin Zhang, Duhe Wen, Yuan Zhang, Luke Ma, Shuquan Chen, Miao Jiang, Xiuchen Zhao, Chin C. Lee, Gang Zhang, Yongjun Huo","doi":"10.1016/j.apsusc.2026.168000","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168000","url":null,"abstract":"Silicon nitride (Si<ce:inf loc=\"post\">3</ce:inf>N<ce:inf loc=\"post\">4</ce:inf>) ceramic substrates are widely considered as promising candidates for high-power electronic modules due to their superior mechanical properties, high thermal conductivity, and a coefficient of thermal expansion well matched to power semiconductor devices. Currently, metallized Si<ce:inf loc=\"post\">3</ce:inf>N<ce:inf loc=\"post\">4</ce:inf> substrates are predominantly copper-clad (Cu-Si<ce:inf loc=\"post\">3</ce:inf>N<ce:inf loc=\"post\">4</ce:inf> substrates) fabricated via the active metal brazing (AMB) process. In the context of the emerging “copper-to-aluminum substitution” trend, aluminum-clad Si<ce:inf loc=\"post\">3</ce:inf>N<ce:inf loc=\"post\">4</ce:inf> substrates (Al-Si<ce:inf loc=\"post\">3</ce:inf>N<ce:inf loc=\"post\">4</ce:inf>) have become particularly attractive for applications such as aerospace owing to its lightweight nature, high thermal conductivity, and low cost. Nevertheless, the low melting point of Al, below the processing temperature of AMB, necessitates alternative low-temperature bonding strategies.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"99 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690973","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
An efficient strategy to screen dual TM atoms modified MoSe2 surface for electroreduction CO2 to C2 product: a first-principles study 筛选双TM原子修饰MoSe2表面用于电还原CO2制C2产品的有效策略:第一线原理研究
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-31 DOI: 10.1016/j.apsusc.2026.167994
Weijie Liao, Li-Xiu Ran, Yun-Bo Li, Bo-Wen Tang, Qingxia Ge, Zhen-Kun Tang, Wen-Jin Yin
{"title":"An efficient strategy to screen dual TM atoms modified MoSe2 surface for electroreduction CO2 to C2 product: a first-principles study","authors":"Weijie Liao, Li-Xiu Ran, Yun-Bo Li, Bo-Wen Tang, Qingxia Ge, Zhen-Kun Tang, Wen-Jin Yin","doi":"10.1016/j.apsusc.2026.167994","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167994","url":null,"abstract":"Electrochemical reduction of carbon dioxide into valuable C<ce:inf loc=\"post\">2</ce:inf> products offers a promising avenue for artificial carbon cycling, but the efficiency remains a challenge. Here, the potential candidates of the CO<ce:inf loc=\"post\">2</ce:inf> reduction catalysis based on double transition metal atoms modified MoSe<ce:inf loc=\"post\">2</ce:inf> (TM<ce:inf loc=\"post\">m</ce:inf>TM<ce:inf loc=\"post\">n</ce:inf>@MoSe<ce:inf loc=\"post\">2</ce:inf> with TM<ce:inf loc=\"post\">m/n</ce:inf>=Sc ∼ Zn) surfaces are systematically investigated by density functional theory. Through a rigorous three-step screening strategy based on structural stability, balanced CO<ce:inf loc=\"post\">2</ce:inf> adsorption, and C–C coupling energy barrier, ninety-five percent of the TM<ce:inf loc=\"post\">m</ce:inf>TM<ce:inf loc=\"post\">n</ce:inf>@MoSe<ce:inf loc=\"post\">2</ce:inf> can be extracted, leaving only Cu<ce:inf loc=\"post\">2</ce:inf>@MoSe<ce:inf loc=\"post\">2</ce:inf>, TiCo@MoSe<ce:inf loc=\"post\">2</ce:inf>, and TiFe@MoSe<ce:inf loc=\"post\">2</ce:inf> as the promising candidates. Further examination shows a donation-feedback mechanism governed the CO<ce:inf loc=\"post\">2</ce:inf> adsorption. Globally, it is evident that C–C coupling primarily occurs via the CO dimerization pathway. Particularly, among the optimal candidates, TiCo@MoSe<ce:inf loc=\"post\">2</ce:inf> exhibited the best kinetic equilibrium throughout the reaction cycle, characterized by a moderate C–C coupling barrier of 0.60 eV and a very low subsequent hydrogenation barrier of 0.34 eV. Electron structure analysis reveals that an anomalous upward shift of the d-level in the TiCo system facilitates the effective return of electrons to the non-bonding orbitals of CO, thereby promoting excellent bond formation. These findings suggests that the screen process is an efficient strategy to obtain the catalysis for CO<ce:inf loc=\"post\">2</ce:inf> reduction to C<ce:inf loc=\"post\">2</ce:inf> product.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"27 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690975","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 of Cr(VI), a non-radioactive surrogate for Tc(VII), by reduced carbon Microspheres@Hydrochar from lactic acid modification 乳酸修饰的还原碳Microspheres@Hydrochar对Tc(VII)的非放射性替代物Cr(VI)的吸附
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-31 DOI: 10.1016/j.apsusc.2026.168005
Ziqi Wan, Qiquan Wang, Tian Wang, Huixiong Wu, Sicheng Jia, Hui Hu
{"title":"Adsorption of Cr(VI), a non-radioactive surrogate for Tc(VII), by reduced carbon Microspheres@Hydrochar from lactic acid modification","authors":"Ziqi Wan, Qiquan Wang, Tian Wang, Huixiong Wu, Sicheng Jia, Hui Hu","doi":"10.1016/j.apsusc.2026.168005","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.168005","url":null,"abstract":"During reprocessing of spent nuclear fuel, technetium mainly exists as pertechnetate (TcO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">-</ce:sup>), whose high solubility and environmental mobility pose long-term risks. The migration and hazards of pertechnetate will decrease when it is reduced to TcO<ce:inf loc=\"post\">2</ce:inf> by reducing materials. Therefore, developing efficient reduction materials to convert TcO<ce:inf loc=\"post\">4</ce:inf><ce:sup loc=\"post\">-</ce:sup> to TcO<ce:inf loc=\"post\">2</ce:inf> is crucial for safe disposal of spent fuel reprocessing wastewater. In this study, a reduced carbon microsphere@hydrochar from lactic acid modification (LAHC) was prepared. Lactic acid was involved in the construction of reductive carbon microspheres on the surface of LAHC while simultaneously enriching reducing oxygen-containing functional groups in LAHC. The reducing capacity of LAHC on Tc(VII) was evaluated by investigating the adsorption of Cr(VI) as a non-radioactive surrogate for radioactive Tc(VII). Electrochemical analysis showed that LAHC exhibited a good reducing capacity, owing to its reduced carbon microspheres and surface oxygen-containing functional groups. The Cr(VI) adsorption on LAHC proceeded through heterogeneous chemisorption. Furthermore, the calculated maximum Langmuir adsorption capacity of Cr(VI) by LAHC reached 383.68 mg·g<ce:sup loc=\"post\">−1</ce:sup>. The removal process of Cr(VI) by LAHC involved an adsorption-coupled interfacial redox mechanism. These findings suggested that lactic acid modification effectively enhanced the reducing capacity of hydrochar, with LAHC offering potential for Cr(VI)/Tc(VII) removal in nuclear effluents.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"29 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690972","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
Simultaneous spatial and spectroscopic characterization of native and biomimetic skin systems by hyperspectral Stimulated Raman Scattering (SRS) microscopy 利用高光谱受激拉曼散射(SRS)显微镜同时对天然皮肤和仿生皮肤系统进行空间和光谱表征
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-26 DOI: 10.1016/j.apsusc.2026.167951
Gilia C.M. Ruiz, Nicoline D. Daugaard, Rikke Tholstrup, Jonathan R. Brewer
{"title":"Simultaneous spatial and spectroscopic characterization of native and biomimetic skin systems by hyperspectral Stimulated Raman Scattering (SRS) microscopy","authors":"Gilia C.M. Ruiz, Nicoline D. Daugaard, Rikke Tholstrup, Jonathan R. Brewer","doi":"10.1016/j.apsusc.2026.167951","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167951","url":null,"abstract":"Understanding molecular organization across complex biological interfaces is essential for evaluating biomimetic tissues and identifying pathological remodeling. Here, hyperspectral stimulated Raman scattering (SRS) microscopy combined with spectral deconvolution was employed for label-free characterization of native human skin, reconstructed three-dimensional (3D) skin models, and a melanoma skin model. Layer-specific analysis across the stratum corneum, epidermis, and dermis enabled investigation of biochemical organization and compositional heterogeneity. In the stratum corneum, variations in the C–H stretching region revealed differences in lipid chain ordering and lipid-to-protein balance, with native human skin exhibiting higher lipid ordering and greater compositional homogeneity than reconstructed models. Amide I analysis demonstrated altered keratin-associated secondary structure organization in reconstructed skin systems, including increased β-sheet and disordered spectral contributions relative to native tissue. Melanoma-associated skin models exhibited enhanced nucleic-acid-related spectral contributions together with reduced collagen-associated signals in the dermal compartment, consistent with extracellular matrix remodeling. These findings demonstrate that hyperspectral SRS microscopy combined with spectral deconvolution provides a sensitive and label-free platform for molecular-level characterization of complex skin biointerfaces and comparative evaluation of native, engineered, and pathological skin systems.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"158 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690781","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
Defect-regulated carrier dynamics in Te-modified BiOBr for visible-light photocatalysis te修饰BiOBr中可见光催化缺陷调控载流子动力学
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-26 DOI: 10.1016/j.apsusc.2026.167967
Praphaiphon Phonsuksawang, Anurak Waehayee, Ruttiya Chaepratoom, Chonticha Hansongkram, Phattharawadee Wichai, Tammanoon Chankhanittha, Peng Jiang, Suwit Suthirakun, Theeranun Siritanon
{"title":"Defect-regulated carrier dynamics in Te-modified BiOBr for visible-light photocatalysis","authors":"Praphaiphon Phonsuksawang, Anurak Waehayee, Ruttiya Chaepratoom, Chonticha Hansongkram, Phattharawadee Wichai, Tammanoon Chankhanittha, Peng Jiang, Suwit Suthirakun, Theeranun Siritanon","doi":"10.1016/j.apsusc.2026.167967","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167967","url":null,"abstract":"Defect engineering provides a powerful approach for modulating electronic structure and carrier dynamics in layered semiconductors. Herein, Te-modified BiOBr nanosheets were synthesized via a room-temperature co-precipitation method, enabling dopant incorporation under mild conditions without hydrothermal treatment. Structural analyses confirm that Te incorporation preserves the layered BiOBr framework while inducing lattice distortion and increasing oxygen vacancy concentration, as evidenced by XPS and EPR measurements. The dominant presence of Te<ce:sup loc=\"post\">4+</ce:sup> species, despite a Te<ce:sup loc=\"post\">6+</ce:sup> precursor, indicates defect-coupled charge redistribution during lattice incorporation. Density functional theory calculations reveal that Te plays a dual role, acting as a multivalent dopant that introduces localized impurity states within the band gap while driving oxygen-vacancy formation, with the two strongly coupled. These defect states enhance carrier trapping and promote interfacial electron transfer to adsorbed O<ce:inf loc=\"post\">2</ce:inf> species. Photoluminescence and time-resolved analyses further support increased non-radiative pathways and accelerated interfacial charge transfer in the Te-modified samples. The optimized composition exhibits enhanced reactive oxygen species generation and improved visible-light-driven degradation of organic pollutants while maintaining structural stability. The results demonstrate that performance enhancement arises primarily from dopant–vacancy coupling and defect-mediated electronic structure modulation rather than band-gap narrowing. This work highlights the role of multi-valent dopant incorporation in regulating defect equilibria and carrier dynamics in layered bismuth oxyhalides.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"37 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691016","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
Zn–bipyridine structure design for constructing a robust transparent polyimide as the substrate for flexible photodetectors 用于柔性光电探测器的透明聚酰亚胺基板的联吡啶结构设计
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-23 DOI: 10.1016/j.apsusc.2026.167844
Jianqiao Zhao, Yuhui Zeng, Zhaoshi Yu, Yulin Li, Fen Zhao, Jundan Huang, Heng Xu, Yi Xing, Jiangnan Dai, Lei Wang, Guoli Tu
{"title":"Zn–bipyridine structure design for constructing a robust transparent polyimide as the substrate for flexible photodetectors","authors":"Jianqiao Zhao, Yuhui Zeng, Zhaoshi Yu, Yulin Li, Fen Zhao, Jundan Huang, Heng Xu, Yi Xing, Jiangnan Dai, Lei Wang, Guoli Tu","doi":"10.1016/j.apsusc.2026.167844","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167844","url":null,"abstract":"Microelectronic and optoelectronic applications increasingly require colorless polyimide (CPI) films with excellent optical, thermal, and mechanical properties. Considering that the thermal expansion coefficient (CTE) and mechanical strength of CPI as a substrate for flexible optoelectronic devices are insufficient, introducing metal ions into CPI with coordination sites is an effective approach to address this issue. Herein, a bipyridine-containing diamine, 3,3<ce:italic>′</ce:italic>-bis(trifluoromethyl)-[2,2<ce:italic>′</ce:italic>-bipyridine]-5,5<ce:italic>′</ce:italic>-diamine (TFPA), was synthesized as a coordination-enabled monomer, and subsequently copolymerized with 2,2<ce:italic>′</ce:italic>-bis(trifluoromethyl)benzidine (TFDB) and 3,3<ce:italic>′</ce:italic>,4,4<ce:italic>′</ce:italic>-biphenyltetracarboxylic dianhydride (BPDA) to prepare a series of CPI films. Systematic investigations indicate that the electron-withdrawing pyridine nitrogen atoms and their interactions with polymer chains govern the optical, thermal, and mechanical properties of the CPI films, with optimal performance achieved at a TFPA content of 40%. Subsequently, varying amounts of Zn<ce:sup loc=\"post\">2+</ce:sup> were introduced into the 40% TFPA polymerization system to fabricate transparent PI films featuring Zn-N coordination structures. The optimized PI-4-Zn10 film exhibits a high glass transition temperature (<ce:italic>T</ce:italic><ce:inf loc=\"post\">g</ce:inf> = 351 °C), low thermal expansion coefficient (CTE = 10.0 ppm/K), remarkable tensile modulus (<ce:italic>E</ce:italic> = 8.2 GPa) and elongation at break (<ce:italic>ε</ce:italic> = 17.9%), and excellent transmittance (<ce:italic>T</ce:italic><ce:inf loc=\"post\">550</ce:inf> = 86.9%). Flexible photodetectors based on the PI-4-Zn10 deliver a responsivity of 2.51 mA W⁻<ce:sup loc=\"post\">1</ce:sup> and a detectivity of 3.74 × 10<ce:sup loc=\"post\">9</ce:sup> Jones at 850 nm, together with stable performance under bending and enabling successful optical communication demonstrations. This work demonstrates a viable strategy for constructing high-performance polyimide substrates for flexible optoelectronic devices.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"15 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148690782","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
Local coordination motifs govern hydrogen binding on Ni–Mo–Cu alloy surfaces 局部配位基序控制着Ni-Mo-Cu合金表面的氢键
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-19 DOI: 10.1016/j.apsusc.2026.167883
Xiangdong Yuan, Zhe Kong, Xing Duan, Rufei Cui, Hongbo Wang, Wei Hu
{"title":"Local coordination motifs govern hydrogen binding on Ni–Mo–Cu alloy surfaces","authors":"Xiangdong Yuan, Zhe Kong, Xing Duan, Rufei Cui, Hongbo Wang, Wei Hu","doi":"10.1016/j.apsusc.2026.167883","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167883","url":null,"abstract":"Ni-based alloys are promising non-precious transition-metal systems for hydrogen evolution reaction (HER)-related surface processes, but hydrogen adsorption on multicomponent alloy surfaces is controlled not only by nominal composition but also by local atomic arrangement. In this work, density functional theory calculations were performed to investigate the structural stability, electronic structure, and hydrogen adsorption thermodynamics of Ni-Mo and Ni-Mo-Cu alloy surfaces. Instead of treating average alloy composition as the sole descriptor, we analyze H adsorption configurations by combining nominal local surface ensembles, relaxed H-metal coordination, charge redistribution, site-projected PDOS, and H-metal bonding interactions. The results show that Mo-involved local environments strengthen H adsorption through enhanced H-metal orbital hybridization, whereas Cu-rich local motifs weaken overly strong H binding by reducing localized charge accumulation and moderating H-metal bonding. Among the investigated compositions, NiMoCu(1:1:4) provides more moderate H adsorption thermodynamics and a higher population of Cu-rich adsorption environments. These findings indicate that composition-dependent H adsorption originates from changes in the statistical distribution of local coordination motifs rather than from average composition alone.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"60 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691170","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-resistivity CdZnTe single crystal films via growth pressure-mediated Zn incorporation 高电阻率CdZnTe单晶薄膜通过生长压力介导的锌掺入
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-19 DOI: 10.1016/j.apsusc.2026.167881
Qing Hu, Mengqi Wu, Yuecong Liu, Silong Liu, Jian Hao, Song Zhu, Mengshi Yu
{"title":"High-resistivity CdZnTe single crystal films via growth pressure-mediated Zn incorporation","authors":"Qing Hu, Mengqi Wu, Yuecong Liu, Silong Liu, Jian Hao, Song Zhu, Mengshi Yu","doi":"10.1016/j.apsusc.2026.167881","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167881","url":null,"abstract":"CdZnTe (CZT) single-crystal films are critical for optoelectronic and nuclear detection devices, with zinc (Zn) composition dictating their bandgap, resistivity, and device performance. By adjusting the growth pressure during the close-spaced sublimation process, we can effectively modulate the Zn content in the films. This control mechanism is rooted in the difference in evacuation efficiency between Zn-containing species and other components. Zn atoms exhibit stronger bonding forces and lower volatility compared to Cd atoms, making them less likely to be pumped away under low-pressure conditions, thus accumulating in the film matrix. This pressure-dependent compositional tuning does not alter the chemical bonding environment of the CZT film, ensuring the maintenance of high crystalline quality. The films with higher Zn content show significantly improved electrical properties, including a higher resistivity (up to 1.17 × 10<ce:sup loc=\"post\">10</ce:sup> Ω cm) and a wider bandgap (1.7 eV), which effectively suppresses dark current and enhances noise performance. This pressure-regulated compositional control strategy provides a simple, scalable approach for fabricating high-quality CZT films, addressing the key challenge of precise component tuning in radiation detection materials and laying a foundation for advanced optoelectronic and radiation detection applications.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"284 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691171","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
Application and mechanistic insights of a novel ammonium dithiophosphate collector for selective flotation separation of chalcopyrite and pyrite 新型二硫代磷酸铵捕收剂在黄铜矿与黄铁矿选择性浮选分离中的应用及机理研究
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-18 DOI: 10.1016/j.apsusc.2026.167873
Zhi Lei, Hao Tang, Heng Zhang, Xu-Gang Zhang, Peng-Fei Xu
{"title":"Application and mechanistic insights of a novel ammonium dithiophosphate collector for selective flotation separation of chalcopyrite and pyrite","authors":"Zhi Lei, Hao Tang, Heng Zhang, Xu-Gang Zhang, Peng-Fei Xu","doi":"10.1016/j.apsusc.2026.167873","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167873","url":null,"abstract":"The effective flotation separation of chalcopyrite and pyrite remains a significant challenge due to their similar surface properties, necessitating the design of novel collectors with high chemical selectivity. This study systematically investigated the effects of the novel collector O, O′-bis(2-methoxyethyl) ammonium dithiophosphate (MEAT) on the flotation separation of chalcopyrite and pyrite. Micro-flotation tests reveal that chalcopyrite can be effectively separated from pyrite at pH 8 using 10<ce:sup loc=\"post\">−4</ce:sup> mol/L of MEAT, with the recovery margin reaching as high as 77.65%. SEM, AFM, and TEM analyses demonstrated that MEAT substantially altered the structural morphology of chalcopyrite, while exerting minimal impact on pyrite. Zeta potential, FTIR, XPS, and total density of states (TDOS) analyses revealed new peaks on the MEAT-treated chalcopyrite, confirming its chemical adsorption via Cu–S bond formation. The interaction region indicator (IRI) demonstrated that, compared to sodium ethyl xanthogenate (SEX), MEAT exhibits not only favorable charge distribution and intramolecular interactions but also stronger chemical forces toward chalcopyrite. Density functional theory (DFT) further verifies that MEAT possesses a more negative adsorption energy on chalcopyrite, resulting in a more stable adsorption configuration. This study provides new insights into the mechanism of action of collectors in the flotation separation of copper-iron minerals.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"158 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691186","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
Morphology-dependent corrosion and antibacterial performance of Ag-functionalized TiO2 on TiZr: compact versus nanotubular structures ag功能化TiO2在TiZr表面的腐蚀和抗菌性能:致密与纳米管结构
IF 6.7 2区 材料科学
Applied Surface Science Pub Date : 2026-07-18 DOI: 10.1016/j.apsusc.2026.167871
Andrei Bogdan Stoian, David Gabriel Cîrmici, Daniela Ionita, Teodor Dan Poteca, Marius Enachescu, Mariana Prodana
{"title":"Morphology-dependent corrosion and antibacterial performance of Ag-functionalized TiO2 on TiZr: compact versus nanotubular structures","authors":"Andrei Bogdan Stoian, David Gabriel Cîrmici, Daniela Ionita, Teodor Dan Poteca, Marius Enachescu, Mariana Prodana","doi":"10.1016/j.apsusc.2026.167871","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.167871","url":null,"abstract":"The correlation between oxide architecture, corrosion resistance and antibacterial activity of TiZr alloys remains a challenge for biomedical surface engineering.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"25 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148691190","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
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