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EDTA regulation of CeO2 crystallization process and analysis of polishing modes and mechanisms corresponding to abrasives with different properties EDTA对CeO2结晶过程的调控及不同性能磨料抛光方式和机理的分析
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.apsusc.2026.166180
Xu Wang, Yuan Wu, Jianming Qiu, Xin Li, Dongliang Zhang, Yan Zhao, Wei Zhou, Mitang Wang
With the continuous improvement of surface quality requirements for semiconductor and optical devices, spherical nano-CeO2 abrasives have attracted attention because they combine chemical and mechanical effects, achieving high material removal rates (MRR) while obtaining ultra-low surface roughness. In this work, a simple precipitation method was adopted, and by adding EDTA (0–2 wt%) during the reaction process, spherical CeO2 abrasives with particle sizes of ∼146–215 nm and good dispersibility were successfully prepared. SEM, XRD, and FTIR results indicate that EDTA inhibits the formation of orthorhombic CeCO3OH, delays the reaction process, and promotes the uniform transformation of precursors to hexagonal CeCO3OH, thereby achieving spherical CeO2 with uniform morphology and particle size. CeO2 with few lattice defects and dense structure caused deeper scratches and higher roughness; samples with high Ce3+ concentration reduced roughness to below 0.3 nm but decreased MRR. The sample with moderate Ce3+ concentration and particle size balanced chemical and mechanical effects in CMP, achieving the highest MRR (178.77 ± 2.30 nm/min) and relatively low roughness (0.28 nm). By analyzing silica tetrahedron evolution in K9 glass, CMP was further divided into three processes, and the causes of each process were revealed.
随着半导体和光学器件表面质量要求的不断提高,球形纳米ceo2磨料因其结合化学和机械效应,在获得超低表面粗糙度的同时实现高材料去除率(MRR)而备受关注。本文采用简单的沉淀法,在反应过程中加入EDTA(0-2 wt%),成功制备出粒径为 ~ 146-215 nm、分散性良好的球形CeO2磨料。SEM、XRD和FTIR结果表明,EDTA抑制了正方晶CeCO3OH的形成,延缓了反应过程,促进前驱体向六方晶CeCO3OH的均匀转变,从而得到形貌和粒径均匀的球形CeO2。CeO2晶格缺陷少,结构致密,划痕深,粗糙度高;高Ce3+浓度样品的粗糙度降低到0.3 nm以下,但MRR降低。中等Ce3+浓度和粒径的样品在CMP中平衡了化学和机械效应,获得了最高的MRR(178.77 ± 2.30 nm/min)和相对较低的粗糙度(0.28 nm)。通过分析K9玻璃中二氧化硅四面体的演化,进一步将CMP分为三个过程,并揭示了每个过程的原因。
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引用次数: 0
Fluoride ions regulate the disproportionation rate of Nb(IV) to produce high-quality Nbx(C,N)y coating for PEMFC bipolar plates 氟离子调节Nb(IV)的歧化速率,制备高质量的PEMFC双极板Nbx(C,N)y涂层
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.apsusc.2026.166224
Yanli Wang, Can Liu, Xinyue Jiang, Yufei Cheng, Jie Wang, Lingxu Yang, Huijun Liu, Chaoliu Zeng
Coatings deposited via the disproportionation reaction of multivalent transition-metal ions in molten salts offer advantages of simple apparatus, straightforward processing, and the formation of metallurgically bonded interfaces with the substrate. In this study, high-quality niobium carbide and nitride coatings were fabricated for proton exchange membrane fuel cell (PEMFC) bipolar plates via disproportionation of Nb(IV) in molten salts. The effect of fluoride ions in the molten salt medium on the composition, microstructure, and properties of coatings deposited on austenitic stainless steel substrates was investigated. Results show that the addition of fluoride ions to NaCl-KCl molten salt effectively modulates the disproportionation rate of Nb(IV), enabling the formation of uniform and dense Nbx(C,N)y coatings on 304 SS. This regulation prevents excessive disproportionation of Nb(IV) and the consequent accumulation of niobium particles, which would otherwise accelerate the corrosion of the coating under galvanic conditions. Regular electrochemical tests demonstrated that the Nbx(C,N)y coating significantly improved the corrosion resistance of 304 SS. Moreover, even under an elevated potential of 1.0–1.6 V vs. SHE, the corrosion current density stayed below the target set of United States Department of Energy (1 μA·cm−2), without significant fluctuations. This demonstrates that the coating possesses outstanding chemical stability and long-term corrosion resistance.
通过熔融盐中多价过渡金属离子的歧化反应沉积涂层具有设备简单、加工直接、与基体形成冶金结合界面等优点。本研究通过熔盐中Nb(IV)的歧化,在质子交换膜燃料电池(PEMFC)双极板上制备了高质量的碳化铌和氮化镀层。研究了熔盐介质中氟离子对奥氏体不锈钢镀层组成、显微组织和性能的影响。结果表明,在NaCl-KCl熔盐中加入氟离子可有效调节Nb(IV)的歧化速率,使304 SS表面形成均匀致密的Nbx(C,N)y涂层,从而防止Nb(IV)歧化过度以及由此产生的铌颗粒的积累,否则会加速镀层在电偶条件下的腐蚀。常规电化学测试表明,Nbx(C,N)y涂层显著提高了304 SS的耐蚀性,并且即使在1.0 ~ 1.6 V vs. SHE电位升高的情况下,腐蚀电流密度也保持在美国能源部设定的目标(1 μA·cm−2)以下,没有明显波动。这表明该涂层具有优异的化学稳定性和长期耐腐蚀性。
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引用次数: 0
Synthesis and characterization of spherical C/ZnO/polydopamine composites as carriers for 5-fluorouracil: a focus on sustained release performance 球形C/ZnO/聚多巴胺复合材料5-氟尿嘧啶载体的合成与表征:缓释性能研究
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.apsusc.2026.166225
Mingli Yue, Zhikuan Feng, Long Gao, Ying Fu, Fei Ye
Drug delivery systems utilize micro-nanomaterials as drug carriers, encapsulating drugs within micro-nanoparticles and releasing them to target tissues or cells via specific pathways. This technology enhances drug stability, prolongs drug retention time in the body, and reduces damage to healthy tissues. This study successfully synthesized novel carbon-doped zinc oxide (C/ZnO) micro-nanomaterials and employed polydopamine (PDA) for surface modification, resulting in the construction of C/ZnO/PDA carriers. Experimental results demonstrate that PDA modification significantly enhances the drug delivery performance of the material. This composite material exhibits a 5-Fu loading efficiency of 37.8%, representing a 1.15-fold increase compared to unmodified C/ZnO. In vitro release tests demonstrate sustained drug release characteristics, showing a 1.62-fold increase over the unmodified system. In addition, these medicine particles significantly enhanced the indicators of antibacterial and bactericidal efficacy. In vitro cell experiments also confirmed that the drug carrier can enhance the lethality of the drug against HepG2 cells. Research on the binding energy between the carrier and the drug revealed that PDA modification promotes drug-carrier binding, resulting in more stable overall adsorption. These findings demonstrate the potential application value of micro-nanoparticle-based targeted drug delivery systems in disease prevention and treatment.
药物传递系统利用微纳米材料作为药物载体,将药物包裹在微纳米颗粒中,并通过特定途径释放到靶组织或细胞中。这项技术提高了药物的稳定性,延长了药物在体内的滞留时间,减少了对健康组织的损害。本研究成功合成了新型碳掺杂氧化锌(C/ZnO)微纳米材料,并利用聚多巴胺(PDA)进行表面修饰,构建了C/ZnO/PDA载体。实验结果表明,经PDA修饰后,材料的给药性能显著提高。该复合材料的5-Fu负载效率为37.8%,比未改性的C/ZnO提高了1.15倍。体外释放试验显示出持续的药物释放特性,显示出比未修饰的系统增加1.62倍。此外,这些药物颗粒显著增强了抗菌和杀菌效果的指标。体外细胞实验也证实了该药物载体能增强药物对HepG2细胞的杀伤作用。对载体与药物结合能的研究表明,PDA修饰促进了药物载体的结合,使得整体吸附更加稳定。这些发现显示了基于微纳米颗粒的靶向给药系统在疾病预防和治疗中的潜在应用价值。
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引用次数: 0
Corrigendum to “NH4+-doped flower-like zinc phosphate-reinforced waterborne epoxy coatings: structural characterization and corrosion protection” [Appl. Surf. Sci. 720 (2026) 165229] “NH4+掺杂花状磷酸锌增强水性环氧涂料:结构表征和防腐”的勘误表[j]。冲浪。科学通报。720 (2026)165229]
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.apsusc.2026.166116
Yulin Zhang, Tao Chen, Shijun Tong, Yunxuan Zhou, Zeyu Zhang, Junyi Chen, Qi Liu, Bin Wang, Fei Chen
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引用次数: 0
Regulating the interfacial microstructure and mechanical properties of Inconel 718 coatings via Dual-Arc Modulated plasma arc cladding 双弧调制等离子体电弧熔覆对Inconel 718镀层界面组织和力学性能的影响
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.apsusc.2026.166078
Lunwu Zhao, Yu Kong, Jianglong Wang, Haihong Huang
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引用次数: 0
Thermodynamics of hydrogen adsorption and dissociation on alloying elements modified BCC-Fe surfaces 合金元素修饰BCC-Fe表面氢吸附解离的热力学研究
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-05 DOI: 10.1016/j.apsusc.2026.166062
Zemin Xu, Lin Cheng, Kai Xia, Chengyang Hu, Kaiming Wu
Hydrogen embrittlement (HE) is a critical threat to the safety of pipeline steels. Its fundamental mechanism originates from the entry of the hydrogen into the steel, initiated by the dissociative adsorption of the H2 molecule on the steel surface. This study directly targets this step through a combined approach of first-principles calculations, thermodynamic modeling, and high-pressure hydrogen permeation experiments. Theoretically, three low-indexed pure Fe surfaces served as the basis for establishing surface H2 molecule adsorption models of pure Fe alloyed with Ti, V, Cr, Mn, Co, Ni, Cu, and Zn. The Gibbs free energy change (ΔG) for the dissociative adsorption of gaseous H2 on BCC-Fe surfaces decreases with increasing H2 partial pressure but increases with temperature. Ti/V/Mn doping further enhanced adsorption by enhancing d-band center coupling with H2 anti-bonding orbitals, while Cu/Zn weakened adsorption by d-band center downshift. Experimentally, 10 MPa high-pressure gas-phase hydrogen permeation tests at room temperature revealed that Cr/Mn doping increased subsurface hydrogen concentration (C0) and reduced effective diffusion coefficient (Deff), whereas Cu doping minimized C0 and maximized Deff. This study provides quantitative guidelines for designing hydrogen-resistant steels for service in gaseous hydrogen environments.
氢脆是威胁管道钢安全的重要问题。其基本机理源于氢气进入钢中,由H2分子在钢表面的解离吸附引发。本研究通过第一性原理计算、热力学建模和高压氢气渗透实验相结合的方法,直接针对这一步骤。理论上,三个低指数纯铁表面作为建立纯铁与Ti、V、Cr、Mn、Co、Ni、Cu和Zn合金表面H2分子吸附模型的基础。气态H2在BCC-Fe表面解离吸附的吉布斯自由能变化(ΔG)随H2分压的升高而减小,随温度的升高而增大。Ti/V/Mn掺杂通过增强d带中心与H2反键轨道的耦合进一步增强吸附,而Cu/Zn掺杂通过d带中心下移减弱吸附。通过10 MPa室温高压气相氢渗透实验发现,Cr/Mn掺杂提高了地下氢浓度(C0),降低了有效扩散系数(Deff),而Cu掺杂使C0最小,Deff最大。这项研究为设计在气态氢环境中使用的耐氢钢提供了定量指导。
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引用次数: 0
p-d orbital hybridization induced by carbon-doped of nickel sulfides for enhanced hydrogen evolution reaction 碳掺杂硫化镍诱导P-d轨道杂化增强析氢反应
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-04 DOI: 10.1016/j.apsusc.2026.166206
Xiaobing Xu, Haoyuan Wei, Qing Luo, Haifeng Chu, Xueming Liu, Yanru Jiang, Yulan Zhu, Lei Zhang, Min Zhang, Shiming Yan, Zhigang Zhang, Peng Zhan, Xinglong Wu
Since the modulation of electron distribution in metal active sites plays a vital role to boost the catalytic activity, it is essential to optimize hydrogen adsorption by p-d orbital coupling for efficient hydrogen evolution catalysis. Herein, we employ a hydrothermal approach and carburization treatments to prepare the C-doped Ni3S2 nanoarrays on the Nickel Foam substrate (C-Ni3S2/NF). Density functional theoretical (DFT) analysis reveals optimal carbon doped could induce p-d orbital coupling between Ni 3d and S 2p orbital in C-Ni3S2, which can optimize the electrons states density of the dominated Ni atoms and lower the Gibbs free energy of hydrogen adsorption (ΔGH*) simultaneously. As a result, an overpotential of 38 mV at 10 mA cm−2 and Tafel slope down to 47 mV dec−1 suggest the C-Ni3S2/NF with 6% C doped owns an enhanced alkaline hydrogen evolution reaction. This study would offer a perception into the logical design of nonprecious-metal catalysis with high electrocatalytic activities for practical applications via p-d orbital coupling
由于金属活性位点的电子分布调节对提高催化活性起着至关重要的作用,因此优化p-d轨道耦合对氢的吸附是实现高效析氢催化的必要条件。本文采用水热法和渗碳处理在泡沫镍衬底上制备了掺杂c的Ni3S2纳米阵列(C-Ni3S2/NF)。密度泛函数理论(DFT)分析表明,最佳碳掺杂可以诱导C-Ni3S2中Ni 3d和s2p轨道之间的p-d轨道耦合,从而优化Ni主导原子的电子态密度,同时降低氢吸附的吉布斯自由能(ΔGH*)。结果表明,C- ni3s2 /NF在10 mA cm−2时的过电位为38 mV, Tafel斜率降至47 mV dec−1,表明掺6% C的C- ni3s2 /NF具有增强的碱性析氢反应。该研究将为通过p-d轨道耦合实现具有高电催化活性的非贵金属催化剂的逻辑设计提供一种思路
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引用次数: 0
Self-regenerating passivation of redox-responsive polyaniline in elastomer-modified perfluorocyclobutyl polymer coatings 弹性体改性全氟环丁基聚合物涂料中氧化还原反应聚苯胺的自再生钝化
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-04 DOI: 10.1016/j.apsusc.2026.166207
Mark Rigel R. Ali, Reymark D. Maalihan, Rebekah C. Wilson, Eugene B. Caldona
The development of corrosion-protective coatings combining barrier durability with active interfacial control remains a challenge in achieving long-term sustainability for metallic infrastructure. This study introduces an elastomer-modified perfluorocyclobutyl (EPFCB) fluoropolymer composite incorporating redox-active polyaniline (PANI) as a multifunctional filler to achieve both barrier and self-passivating protection. At moderate loading (∼0.5 wt%), PANI optimizes mechanical compliance and adhesion while maintaining the low surface energy and dielectric stability of the EPFCB matrix, providing a robust foundation for active corrosion control. Macroscopic performance, evaluated by electrochemical impedance spectroscopy, potentiodynamic polarization, cyclic corrosion, and UV weathering, was correlated with interfacial chemistry and morphology through complementary spectroscopic and microscopic analyses. The results show that well-dispersed PANI domains establish localized redox equilibria (emeraldine salt ⇄ emeraldine base) that regulate Fe oxidation and promote a uniform, continuous Fe(III)-rich passive layer at early corrosion sites, as verified by surface spectroscopy and potential mapping. The optimal formulation exhibited sustained impedance above 108 Ω·cm2 after 30 days in 3.5% NaCl, minimal rust creep, and improved UV stability, outperforming both neat EPFCB and higher PANI loadings. These findings demonstrate that sub-percolation PANI incorporation transforms an inert fluoropolymer barrier into a hybrid, self-regulating coating system, bridging passive protection and dynamic interfacial passivation.
结合屏障耐久性和主动界面控制的防腐涂层的开发仍然是金属基础设施实现长期可持续性的挑战。本研究介绍了一种弹性体改性的全氟环丁基(EPFCB)含氟聚合物复合材料,其中含有氧化还原活性聚苯胺(PANI)作为多功能填料,以实现屏障和自钝化保护。在中等负载(~ 0.5 wt%)下,PANI优化了EPFCB基体的机械适应性和粘附性,同时保持了EPFCB基体的低表面能和介电稳定性,为主动腐蚀控制提供了坚实的基础。宏观性能通过电化学阻抗谱、动电位极化、循环腐蚀和紫外线风化来评估,并通过互补的光谱和微观分析将界面化学和形貌联系起来。结果表明,分散良好的聚苯胺域建立了局部氧化还原平衡(祖母绿盐  祖母绿碱),调节了铁的氧化,并在早期腐蚀部位促进了均匀、连续的富铁(III)钝化层,这得到了表面光谱和电位映射的证实。最佳配方在3.5% NaCl环境下处理30 天后阻抗维持在108 Ω·cm2以上,锈蠕变最小,紫外线稳定性提高,优于纯EPFCB和高PANI负载。这些发现表明,聚苯胺的亚渗透掺入将惰性含氟聚合物屏障转变为一种混合的、自调节的涂层体系,架起了被动保护和动态界面钝化的桥梁。
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引用次数: 0
Plasmonic enhancement of UV detection in Au nanoparticle-decorated SiC nanowire phototransistors 金纳米粒子修饰碳化硅纳米线光电晶体管中紫外探测的等离子体增强
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-04 DOI: 10.1016/j.apsusc.2026.166194
Kasif Teker, Sahan Tetik
{"title":"Plasmonic enhancement of UV detection in Au nanoparticle-decorated SiC nanowire phototransistors","authors":"Kasif Teker, Sahan Tetik","doi":"10.1016/j.apsusc.2026.166194","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.166194","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"104 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110090","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
A first-principles study of two-dimensional V2N as a cathode material for sodium-sulfur batteries 二维V2N作为钠硫电池正极材料的第一性原理研究
IF 6.7 2区 材料科学 Q2 CHEMISTRY, PHYSICAL Pub Date : 2026-02-04 DOI: 10.1016/j.apsusc.2026.166198
Yusheng Wang, Juanjuan Wang, Yaolong Jia, Nahong Song, Xiaoyan Song, Haiyan Gao, Qiaoli Zhang, Bin Xu, Yaru Peng, Fei Wang
{"title":"A first-principles study of two-dimensional V2N as a cathode material for sodium-sulfur batteries","authors":"Yusheng Wang, Juanjuan Wang, Yaolong Jia, Nahong Song, Xiaoyan Song, Haiyan Gao, Qiaoli Zhang, Bin Xu, Yaru Peng, Fei Wang","doi":"10.1016/j.apsusc.2026.166198","DOIUrl":"https://doi.org/10.1016/j.apsusc.2026.166198","url":null,"abstract":"","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"39 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146110091","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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Applied Surface Science
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