Applied Surface Science最新文献_第3页

Mo doping-induced edge amorphization of CuSe nanosheets to boost hydrogen evolution reaction in neutral media Mo掺杂诱导CuSe纳米片边缘非晶化促进中性介质中析氢反应

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-06-02 DOI: 10.1016/j.apsusc.2025.163708

Min Wang , Kaisheng Chen , Guanjun Sun , Zihao Yan , Yongjun Chen , Hongtao Liu , Erling Zhao , Jianbao Li , Xiwen Du

{"title":"Mo doping-induced edge amorphization of CuSe nanosheets to boost hydrogen evolution reaction in neutral media","authors":"Min Wang , Kaisheng Chen , Guanjun Sun , Zihao Yan , Yongjun Chen , Hongtao Liu , Erling Zhao , Jianbao Li , Xiwen Du","doi":"10.1016/j.apsusc.2025.163708","DOIUrl":"10.1016/j.apsusc.2025.163708","url":null,"abstract":"<div><div>The development of efficient electrocatalysts for hydrogen evolution reaction (HER) in neutral media remains a challenge due to their slow kinetics and low conductivity. Metal selenides are widely used as HER catalysts, but their structural stabilities are not good and the HER performances in neutral media need to be improved. Herein, we report the direct growth of Mo-doped CuSe (Mo0.33Cu0.67Se) nanosheets with edge-amorphization on Ni foam (NF) through a facile one-pot solvothermal method for the first time, which are inexpensive and possess high-HER performances in neutral media. It was found that Mo0.33Cu0.67Se only requires an overvoltage of 55 mV to reach a current density of 10 mA cm−2 (with a Tafel slope of 75 mV dec-1), which is superior to commercial 20 % Pt/C (73 mV). Doping CuSe with Mo could lead to amorphization of the edges of nanosheets, and both experimental and theoretical results verify that this structure is beneficial for reducing the oxidative dissolution of Se ion and improving stability. Meanwhile, it also optimizes the free energy of H2O dissociation, hydrogen adsorption and desorption, thereby effectively enhancing the performance of electrocatalytic hydrogen evolution in neutral media.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"708 ","pages":"Article 163708"},"PeriodicalIF":6.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201462","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

Hydrophobic photothermal cilia for anti-icing/deicing and insight from its molecular dynamics simulation 用于防冰/除冰的疏水光热纤毛及其分子动力学模拟

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-02 DOI: 10.1016/j.apsusc.2025.163692

Yuhao Wu, Shihe Hu, Zeyu Ma, Sheng Li, Shan Lu, Zheng Wang, Xiaodong Huang, Mingwei Ding, Xuefeng Bai, Guangneng Dong, Liguo Qin

{"title":"Hydrophobic photothermal cilia for anti-icing/deicing and insight from its molecular dynamics simulation","authors":"Yuhao Wu, Shihe Hu, Zeyu Ma, Sheng Li, Shan Lu, Zheng Wang, Xiaodong Huang, Mingwei Ding, Xuefeng Bai, Guangneng Dong, Liguo Qin","doi":"10.1016/j.apsusc.2025.163692","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163692","url":null,"abstract":"Photothermal materials are of great important for outdoor equipment in anti-icing/deicing due to their environmental friendliness, durability, and energy conservation. However, their deicing effectiveness is often limited by the photothermal conversion efficiency. In this study, we developed a hydrophobic photothermal surface covered by cilia including mesoporous shell-core Fe3O4 nanoparticles, which rapidly heated up within ∼100 s and achieved a significant temperature difference of ∼52 °C at a solar radiation intensity. For the composite polymer network of the cilia, we used molecular dynamic simulation to reveal that the siloxane chains within the ciliary structure penetrate and entangle with photothermal mesoporous nanoparticles. The mesoporous design of nanoparticles improved light absorption efficiency. As a result, under light irradiation at 0.03 W/cm2, water remained unfrozen even at −10 °C. Moreover, we revealed the microscale mechanism of ice heterogeneous nucleation and growth on the surface of cilia via molecular dynamic simulation. This study provides valuable insights into anti-icing surface design, highlighting the potential applications of photothermal structure surfaces in de-icing technologies.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"6 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201458","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

Polyester artificial ligament modified with a polyphenol-zinc layer for controlled and targeted release of ciprofloxacin 多酚锌层修饰涤纶人工韧带用于环丙沙星控释和靶向释放

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-02 DOI: 10.1016/j.apsusc.2025.163712

Jakub Reczkowski, Martyna Maria Pruszkowska, Marcel Jakubowski, Maria Ratajczak, Łukasz Ławniczak, Wojciech Szymkuć, Marcin Chodkowski, Malgorzata Antos-Bielska, Małgorzata Krzyżowska, Silvia Spriano, Mariusz Sandomierski

{"title":"Polyester artificial ligament modified with a polyphenol-zinc layer for controlled and targeted release of ciprofloxacin","authors":"Jakub Reczkowski, Martyna Maria Pruszkowska, Marcel Jakubowski, Maria Ratajczak, Łukasz Ławniczak, Wojciech Szymkuć, Marcin Chodkowski, Malgorzata Antos-Bielska, Małgorzata Krzyżowska, Silvia Spriano, Mariusz Sandomierski","doi":"10.1016/j.apsusc.2025.163712","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163712","url":null,"abstract":"Tendon and ligament injuries often necessitate surgical intervention with the use of artificial implants due to their complex nature and the difficulties associated with natural tissue regeneration. This study investigates a novel surface modification method for polyester artificial ligaments (PEAL) to enhance their antimicrobial properties and biocompatibility. A polyphenol-zinc layer was synthesized on PEAL using epigallocatechin gallate (EGCG) and zinc cations, which allowed for the adsorption of ciprofloxacin (CIPRO) to achieve prolonged antibacterial activity. Comprehensive analyses, including UV–Vis spectroscopy, scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS), confirmed the successful synthesis of the layer and the drug adsorption. The modified PEAL exhibited significant improvements in hydrophilicity, antioxidant capacity, and a sustained release of CIPRO over four hours. Antimicrobial tests demonstrated enhanced effectiveness against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus, with the highest inhibition rate observed for E. coli. Microbiological studies also demonstrated the ability of the modified PEAL to inhibit biofilm formation on their surface. Cytotoxicity studies indicated minimal toxicity for the modified samples, supporting their biocompatibility and potential for biomedical applications. Expression studies of inflammatory markers in two different cell lines showed no negative impact on the cellular inflammatory response. This innovative approach presents a promising solution for reducing infection risks and improving outcomes in the repair of the musculoskeletal system.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"7 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201459","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

Coordination tuned ozone catalytic activity of iron oxides 配位调节了氧化铁对臭氧的催化活性

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-02 DOI: 10.1016/j.apsusc.2025.163710

Jian Guan, Yuqi Liu, Qiuyi Zhu, Guojun Ma, Jiayu Zhang, Zheyong Fan, Wei Chen, Jiawei Yang, Ning Han, Yunfa Chen

{"title":"Coordination tuned ozone catalytic activity of iron oxides","authors":"Jian Guan, Yuqi Liu, Qiuyi Zhu, Guojun Ma, Jiayu Zhang, Zheyong Fan, Wei Chen, Jiawei Yang, Ning Han, Yunfa Chen","doi":"10.1016/j.apsusc.2025.163710","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163710","url":null,"abstract":"At present, near-ground ozone still acts as an air pollutant, posing threats to human’s health. In this study, Fe-based catalysts with different coordination environments and valance states were synthesized and the coordination environments were verified using EXAFS and XRD Rietveld fitting, while in-situ Raman and in-situ DRIFTs were employed to investigate the oxygen intermediates of ozone catalytic reaction. The following activities order for ozone catalytic reaction was obtained: [FeO6]3+≫ [FeO4]3+> [FeO6]2+≈ [FeO4]2+ proven by DFT calculations, and α-Fe2O3 with [FeO6]3+ coordination structure has a high efficiency of about 80 % after 2 h at a WHSV of 720000 mL g-1h−1 and ozone concentration of 1000 ppm. The superior catalytic activity could be attributed to the high crystal splitting energy in the octahedral coordination structure, which could offer electrons easily for the catalytic reaction. This study provides valuable insights for the development of Fe-based ozone catalysts as well as for other transition metal oxides.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"54 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201460","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

Effect of Pb2+ released from galena on chalcopyrite flotation in the presence of Na2SO3, Na2SiO3 and CMC Na2SO3、Na2SiO3和CMC存在下方铅矿释放Pb2+对黄铜矿浮选的影响

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-02 DOI: 10.1016/j.apsusc.2025.163714

Xiao Wei, Hao Lai, Xing Yang, Xuemei Lu, Jinpeng Cai, Peilun Shen, Ruizeng Liu, Jiaxi Jin, Dianwen Liu

{"title":"Effect of Pb2+ released from galena on chalcopyrite flotation in the presence of Na2SO3, Na2SiO3 and CMC","authors":"Xiao Wei, Hao Lai, Xing Yang, Xuemei Lu, Jinpeng Cai, Peilun Shen, Ruizeng Liu, Jiaxi Jin, Dianwen Liu","doi":"10.1016/j.apsusc.2025.163714","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163714","url":null,"abstract":"The dissolution of galena and the subsequent release of Pb2+ significantly impact the selective flotation separation of chalcopyrite and galena. This study examines the effect of Pb2+ released from galena on chalcopyrite flotation under conditions where sodium sulfite (Na2SO3), sodium silicate (Na2SiO3), and sodium carboxymethyl cellulose (CMC) are used as a combined depressant system (SSC), and sodium ethyl xanthate (NaEX) serves as the collector. Flotation tests conducted at pH 8.5 reveal that in the presence of SSC, chalcopyrite recovery decreased from over 84 % (without Pb2+) to 12.14 % at a Pb2+ concentration of 1.25 × 10−4 mol/L, demonstrating that Pb2+ enhances the depressive action of SSC on chalcopyrite, leading to a significant reduction in its recovery. To elucidate the underlying mechanisms, a series of analytical techniques, including inductively coupled plasma optical emission spectrometry (ICP-OES), UV–Vis spectroscopy, contact angle measurements, cryogenic time-of-flight secondary ion mass spectrometry (Cryo-ToF-SIMS), X-ray photoelectron spectroscopy (XPS), and zeta potential analysis, were employed to examine the adsorption behavior of SSC and NaEX on chalcopyrite in the presence of Pb2+. The findings reveal that Pb2+ absorbs onto hydroxyl sites on the chalcopyrite surface, forming PbOFe surface complexes, which then serve as active sites for the adsorption of SSC and NaEX. The adsorption of SSC leads to the formation of PbSO3, PbSiO3, and Pb-CMC chelates, while PbEX species are generated from NaEX adsorption.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"45 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144201456","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

Selective flotation separation of ilmenite from fine-grained titanaugite utilizing environmentally friendly depressant sodium alginate: Experimental and mechanistic study 环境友好型抑制剂海藻酸钠选择性浮选钛铁矿与细粒钛辉矿：实验与机理研究

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-01 DOI: 10.1016/j.apsusc.2025.163705

Jiaqiao Yuan, Xiang Gong, Hongyu Lu, Hao Lai, Shuming Wen, Shaojun Bai, Dandan Wu, Yongxing Zheng

{"title":"Selective flotation separation of ilmenite from fine-grained titanaugite utilizing environmentally friendly depressant sodium alginate: Experimental and mechanistic study","authors":"Jiaqiao Yuan, Xiang Gong, Hongyu Lu, Hao Lai, Shuming Wen, Shaojun Bai, Dandan Wu, Yongxing Zheng","doi":"10.1016/j.apsusc.2025.163705","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163705","url":null,"abstract":"The flotation separation of fine-grained ilmenite and titanaugite is a challenging issue. This study employed an environmentally friendly inhibitor, sodium alginate (SA), to overcome this challenge. Single mineral flotation results demonstrated that SA exhibited significant depression on fine-grained titanaugite over a wide pH range, while inhibitory effects on ilmenite was small. Furthermore, binary mixed mineral flotation experiments revealed that a concentrate with a grade of 37.52 % and a recovery of 65.15 % could obtain using 6.0 mg/L of SA. AFM images confirmed that SA had stable and dense adsorption on the surface of titanaugite compared to ilmenite, which hindered further adsorption of NaOL. Zeta potential and FTIR analyses indicated that SA underwent strong chemisorption on the titanaugite surface, while its interaction with ilmenite was comparatively weak, resulting in a considerable increase in the floatability difference between the two minerals. XPS analysis and DFT calculations confirmed that the carboxyl group within SA formed a stable bridge adsorption configuration with the Ca and Mg sites of titanaugite. However, SA had feeble influence the chemical interactions between NaOL and the Fe site on ilmenite. Consequently, SA shows a greater affinity for titanaugite than ilmenite, which facilitates the selective separation of fine-grained ilmenite from titanaugite.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"67 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188829","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

Ultraviolet laser-induced depolymerization of polyvinylpyrrolidone for decreasing off-current of 2D tellurium transistors 紫外激光诱导聚乙烯吡罗烷酮解聚以降低二维碲晶体管的断流

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-06-01 DOI: 10.1016/j.apsusc.2025.163659

Kang-nyeoung Lee , In Cheol Choi , Dae Young Park , Seungho Bang , Dong Hyeon Kim , Jiseong Jang , Hyung Chan Suh , Chaewon Lee , Subin Choi , Hye Min Oh , Hyung Mo Jeong , Mun Seok Jeong

{"title":"Ultraviolet laser-induced depolymerization of polyvinylpyrrolidone for decreasing off-current of 2D tellurium transistors","authors":"Kang-nyeoung Lee , In Cheol Choi , Dae Young Park , Seungho Bang , Dong Hyeon Kim , Jiseong Jang , Hyung Chan Suh , Chaewon Lee , Subin Choi , Hye Min Oh , Hyung Mo Jeong , Mun Seok Jeong","doi":"10.1016/j.apsusc.2025.163659","DOIUrl":"10.1016/j.apsusc.2025.163659","url":null,"abstract":"<div><div>Tellurium (Te) is an emerging two-dimensional (2D) p-type material with remarkable air stability and exceptionally high p-channel mobility, making it ideal for next-generation electronics. For the synthesis of Te, the hydrothermal method using polyvinylpyrrolidone (PVP) as a capping ligand is commonly employed because of the challenges associated with the mechanical exfoliation of Te. However, the residual PVP after thinning and cleaning hinders the expression of the intrinsic optical and electrical properties of 2D Te, thereby limiting its overall performance. In this study, we present an ultraviolet laser-assisted PVP removal method, validated by photoluminescence and Raman spectroscopy, which effectively eliminates PVP residues while preserving the integrity of the host material. Furthermore, the removal of organic cross-links was confirmed by additional photooxidation peaks in X-ray photoelectron spectra. The proposed method resulted in a tenfold reduction in the off-current in 2D Te-based field-effect transistors, demonstrating its effectiveness. This study demonstrates significant advancements in solution-processed 2D materials and provides a versatile approach for ligand-assisted synthesis and device applications.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"709 ","pages":"Article 163659"},"PeriodicalIF":6.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188828","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

Finite temperature oxidation behavior and microstructure evolution of gradient nanostructured Hf-Ta-C coating 梯度纳米结构Hf-Ta-C涂层的有限温度氧化行为及微观结构演变

IF 6.3 2区材料科学

Applied Surface Science Pub Date : 2025-06-01 DOI: 10.1016/j.apsusc.2025.163704

Feilong Jia , Qiang Miao , Wenping Liang , Xiangle Chang , Jiumei Gao , Hao Lin , Hairui Ma , Yuanyuan Sun , Yan Qi , Rongxue Yan , Xiaoma Tao

{"title":"Finite temperature oxidation behavior and microstructure evolution of gradient nanostructured Hf-Ta-C coating","authors":"Feilong Jia , Qiang Miao , Wenping Liang , Xiangle Chang , Jiumei Gao , Hao Lin , Hairui Ma , Yuanyuan Sun , Yan Qi , Rongxue Yan , Xiaoma Tao","doi":"10.1016/j.apsusc.2025.163704","DOIUrl":"10.1016/j.apsusc.2025.163704","url":null,"abstract":"<div><div>Hafnium carbide has been used as a greatly desirable candidate for coatings to improve the mechanical properties of TA15 alloy. However, it is susceptible to loss of protection against the substrate due to rapid oxidation and spalling of binary carbide coatings at finite temperatures. To solve this problem, ternary Hf-Ta-C solid solution coating was successfully prepared usingdouble glow plasma alloying (DGPA) technique. For comparison, binary HfC and TaC coatings were also prepared. The microstructure, mechanical properties, and oxidation behavior of the Hf-Ta-C coating were investigated. The results show that Hf-Ta-C coating with gradient nanostructure was obtained. The grain size decreased gradually from the interface to the surface of the coating. The oxidation rate constants (k) of Hf-Ta-C, HfC, and TaC coatings were 3.96 × 10-5, 18.1 × 10-5 and 11.4 × 10-5 mg2/cm4·s, respectively, after oxidation at 873 K for 50 h. The O adsorption energy of Hf-Ta-C, HfC and TaC coatings were −4.34 eV, −6.16 eV and −5.01 eV, respectively, and the low O adsorption energies slowed down the oxidation process. The formation of ductile Hf6Ta2O17 on the coating surface inhibited cracking.</div></div>","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"708 ","pages":"Article 163704"},"PeriodicalIF":6.3,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144192723","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

Synergistic optimization of microwave absorption and thermal conductivity in FBN@Ni-NiO composites with an Antiferromagnetic-Ferromagnetic coupling system 反铁磁-铁磁耦合体系FBN@Ni-NiO复合材料微波吸收与导热性能的协同优化

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-01 DOI: 10.1016/j.apsusc.2025.163655

Zhen Lv, Zhongyang Duan, Yu Zhang, Shuang Liu, Di Yin, Yufeng Bai, Na Yan, Tai Peng

{"title":"Synergistic optimization of microwave absorption and thermal conductivity in FBN@Ni-NiO composites with an Antiferromagnetic-Ferromagnetic coupling system","authors":"Zhen Lv, Zhongyang Duan, Yu Zhang, Shuang Liu, Di Yin, Yufeng Bai, Na Yan, Tai Peng","doi":"10.1016/j.apsusc.2025.163655","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163655","url":null,"abstract":"To address challenges in heat dissipation and electromagnetic compatibility in miniaturized electronic devices, this study reports the construction of a Ni-NiO heterostructure on fluorinated boron nitride (FBN). Ni-MOF was uniformly coated onto FBN via a solvothermal synthesis process, followed by high-temperature annealing to obtain FBN@Ni-NiO composites. The FBN@Ni-NiO-700 composite achieved exceptional performance, with a minimum reflection loss (RLmin) of −67.64 dB at 2.87 mm thickness in the X-band and a maximum effective absorption bandwidth (EABmax) of 5.78 GHz. The Ni-NiO heterostructure synergistically enhances electromagnetic wave dissipation through magnetic and antiferromagnetic interactions and optimizes impedance matching, yielding broad absorption bandwidth. Also, with its innovative structural design and exceptional electromagnetic loss properties, the FBN@Ni-NiO composite demonstrates remarkable performance advantages, achieving an outstanding maximum RCS reduction of 19.82 dB m2. In TC, FBN@Ni-NiO-700/UV-cured resin composites achieved a 537 % increase, from 0.2500 W m-1 K-1 to 1.5915 W m-1 K-1 at 30 wt% filler content. This pronounced enhancement is ascribed to the formation of continuous and well-ordered thermal conduction pathways facilitated by the synergistic interplay between FBN and the Ni-NiO heterostructure, which significantly improves phonon transport efficiency. Additionally, the Ni-NiO interface effectively reduces phonon scattering between the thermal fillers and the polymer matrix. These results underscore the promising potential of FBN@Ni-NiO composites for applications in 5G communication systems, radar technology, and aerospace engineering.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"3 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188826","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

Study of photothermal properties, antimicrobial activity and biological functions of porous tantalum modified by Cu2+ and Sr2+ doping hydroxyapatite@polydopamine Cu2+和Sr2+掺杂改性多孔钽的光热性质、抗菌活性和生物功能研究hydroxyapatite@polydopamine

IF 6.7 2区材料科学

Applied Surface Science Pub Date : 2025-06-01 DOI: 10.1016/j.apsusc.2025.163640

Anqi Cai, Hairong Yin, Cuicui Wang, Hao Wan, Linru Wang, Lipeng Qian

{"title":"Study of photothermal properties, antimicrobial activity and biological functions of porous tantalum modified by Cu2+ and Sr2+ doping hydroxyapatite@polydopamine","authors":"Anqi Cai, Hairong Yin, Cuicui Wang, Hao Wan, Linru Wang, Lipeng Qian","doi":"10.1016/j.apsusc.2025.163640","DOIUrl":"https://doi.org/10.1016/j.apsusc.2025.163640","url":null,"abstract":"Porous tantalum, with its bone tissue-matching biomechanical compatibility and three-dimensional interconnected porous structure, serves as an ideal carrier material for bone defect repair. To address the limited functionality of conventional hydroxyapatite coatings, this study developed a polydopamine-modified copper/strontium co-doped hydroxyapatite composite system through a synergistic doping strategy. Experimental results demonstrated that sustained copper ion release (0.451 ppm over 21 days) endowed the material with persistent antibacterial capability, while strontium ion release (11.847 ppm) significantly enhanced osteoblast alkaline phosphatase (ALP) activity by 2.8-fold. The polydopamine coating achieved a photothermal conversion efficiency of 68.83 %, exhibiting a bacterial inactivation rate exceeding 99.9 % against Escherichia coli under near-infrared irradiation. Cytotoxicity evaluation confirmed that material extracts caused no negative impact on MC3T3-E1 cell viability (>95 %), with ion release concentrations consistently below safety thresholds (Cu < 1 ppm, Sr < 100 ppm). This work lays the foundation for developing novel bone repair materials integrating osteoinductive and intelligent antibacterial functions.","PeriodicalId":247,"journal":{"name":"Applied Surface Science","volume":"20 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144188832","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