Nanomaterials最新文献_第10页

Strain Engineering of Anisotropic Electronic, Transport, and Photoelectric Properties in Monolayer Sn₂Se₂P₄. 单层Sn2Se2P4中各向异性电子、输运和光电特性的应变工程。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090679

Haowen Xu, Yuehua Xu

{"title":"Strain Engineering of Anisotropic Electronic, Transport, and Photoelectric Properties in Monolayer Sn2Se2P4.","authors":"Haowen Xu, Yuehua Xu","doi":"10.3390/nano15090679","DOIUrl":"10.3390/nano15090679","url":null,"abstract":"In this study, we demonstrate that the Sn2Se2P4 monolayer exhibits intrinsic anisotropic electronic characteristics with the strain-synergistic modulation of carrier transport and optoelectronic properties, as revealed by various levels of density functional theory calculations combined with the non-equilibrium Green's function method. The calculations reveal that a-axis uniaxial compression of the Sn2Se2P4 monolayer induces an indirect-to-direct bandgap transition (from 1.73 eV to 0.97 eV, as calculated by HSE06), reduces the hole effective mass by ≥70%, and amplifies current density by 684%. Conversely, a-axis uniaxial expansion (+8%) boosts ballistic transport (a/b-axis current ratio > 105), rivaling black phosphorus. Notably, a striking negative differential conductance arises with the maximum Ipeak/Ivalley in the order of 105 under the 2% uniaxial compression along the b-axis of the Sn2Se2P4 monolayer. Visible-range anisotropic absorption coefficients (~105 cm-1) are achieved, where -4% a-axis strain elevates the photocurrent density (6.27 μA mm-2 at 2.45 eV) and external quantum efficiency (39.2%) beyond many 2D materials benchmarks. Non-monotonic strain-dependent photocurrent density peaks at 2.00 eV correlate with hole effective mass reduction patterns, confirming the carrier mobility of the Sn2Se2P4 monolayer as the governing parameter for photogenerated charge separation. These results establish Sn2Se2P4 as a multifunctional material enabling strain-tailored anisotropy for logic transistors, negative differential resistors, and photovoltaic devices, while guiding future investigations on environmental stabilization and heterostructure integration toward practical applications.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12073495/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144018908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plasmonic Nanosensors Based on Highly Tunable Multiple Fano Resonances Induced in Metal-Insulator-Metal Waveguide Systems. 金属-绝缘体-金属波导系统中基于高可调谐多范诺共振的等离子体纳米传感器。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090686

Ping Jiang, Yilin Wang

引用次数: 0

Research Progress on the Synthesis of Nanostructured Photocatalysts and Their Environmental Applications. 纳米结构光催化剂的合成及其环境应用研究进展。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090681

Yanan Niu, Qi Shi, Tai Peng, Xi Cao, Yuguang Lv

{"title":"Research Progress on the Synthesis of Nanostructured Photocatalysts and Their Environmental Applications.","authors":"Yanan Niu, Qi Shi, Tai Peng, Xi Cao, Yuguang Lv","doi":"10.3390/nano15090681","DOIUrl":"10.3390/nano15090681","url":null,"abstract":"Due to their unique photocatalytic properties, nanostructured photocatalysts have shown broad prospects for application in environmental treatment. In recent years, researchers have significantly enhanced the photocatalytic charge separation efficiency and photocatalytic stability of photocatalysts by regulating semiconductor energy band structures, optimizing interface and surface properties, constructing heterogeneous structures, and introducing noble metal doping. This review systematically summarizes the basic principles, synthesis methods, and modification strategies of nanostructured photocatalysts and focuses on recent research advances in their environmental applications, such as water pollution control, air purification, and carbon dioxide reduction. Meanwhile, this review analyzes current challenges in the field, such as low quantum efficiency, insufficient stability, and limited industrialization, and outlines future development directions, including smart catalytic technology, fabrication of multifunctional composites, and large-scale synthesis, thereby providing a reference for research and application.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12073334/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144019085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxygen Vacancy in Magnéli Phases and Its Effect on Thermoelectric Performances. magnizli相中氧空位及其对热电性能的影响。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090684

Zhou Guan, Chuangshi Feng, Hongquan Song, Lingxu Yang, Xin Wang, Huijun Liu, Jiawei Zhang, Fanqian Wei, Xin Yuan, Hengyong Yang, Yu Tang, Fuxiang Zhang

{"title":"Oxygen Vacancy in Magnéli Phases and Its Effect on Thermoelectric Performances.","authors":"Zhou Guan, Chuangshi Feng, Hongquan Song, Lingxu Yang, Xin Wang, Huijun Liu, Jiawei Zhang, Fanqian Wei, Xin Yuan, Hengyong Yang, Yu Tang, Fuxiang Zhang","doi":"10.3390/nano15090684","DOIUrl":"10.3390/nano15090684","url":null,"abstract":"Magnéli phases exhibit significant potential for applications in electronic materials in energy conversion due to their high electrical conductivity and excellent thermal stability. In this study, single-phase TinO2n-1 (n = 4, 5, 6) bulk materials were successfully prepared by a combination of the carbothermal reduction of nano-sized rutile TiO2 and hot-press sintering methods. The relationships between the phase evolution, microstructural features, and thermoelectric performance were investigated systematically. Synchrotron X-ray diffraction (SXRD) and scanning electron microscopy (SEM) analyses revealed that the Ti4O7 and Ti5O9 materials had single-phase structures with high densities (relative density > 97%) and no obvious grain boundary holes or microcracks. We tested the thermoelectric properties of the Magnéli phases in the temperature range of 300-1100 K. The Magnéli phases exhibited a significant temperature dependence, with peak zT values of 0.17, 0.18, and 0.14 for Ti4O7, Ti5O9, and Ti6O11, respectively, at 1100 K. This variation in thermoelectric performance was mainly attributed to the synergistic effect of the oxygen vacancy concentration and the shear surface density on the carrier concentration and lattice thermal conductivity. Furthermore, the Fermi energy levels and electronic thermal conductivity of the Magnéli phases were calculated using the single parabolic band (SPB) model.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12073597/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144045367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanomaterial ZnO Synthesis and Its Photocatalytic Applications: A Review. 纳米ZnO材料的合成及其光催化应用综述。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090682

Chunxiang Zhu, Xihui Wang

引用次数: 0

Scalable Synthesis of PtAu Nanoalloy-Decorated Hydrogenated TiO₂ for High-Efficiency Indoor Formaldehyde Photodegradation. PtAu纳米合金修饰氢化TiO2高效室内甲醛光降解的规模化合成

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090683

Hairui Cai, Benjamin Yang, Jie Hou, Ziqi Wang, Zhuo Li

{"title":"Scalable Synthesis of PtAu Nanoalloy-Decorated Hydrogenated TiO2 for High-Efficiency Indoor Formaldehyde Photodegradation.","authors":"Hairui Cai, Benjamin Yang, Jie Hou, Ziqi Wang, Zhuo Li","doi":"10.3390/nano15090683","DOIUrl":"10.3390/nano15090683","url":null,"abstract":"Formaldehyde, a pervasive indoor air pollutant posing significant health risks, has driven extensive research into advanced mitigation strategies to ensure safer living environments. Herein, this study presents a synthesis method for the large-scale production of hydrogenated TiO2 (P25) loaded with PtAu nanoalloys (P25(H)-PtAu), using a combination of ball milling and high-temperature annealing. Hydrogenation-induced defect-rich TiO2 efficiently improves visible light absorption, enhancing the utilization of visible light in photocatalytic reactions. Mechanochemical ball milling was employed to prepare ultrasmall PtAu nanoalloys with a size of 3.7 ± 0.1 nm, which were uniformly dispersed on the surface of P25(H). Density functional theory (DFT) results indicate that PtAu nanoalloys synergistically enhance charge separation via Schottky junctions and surface reaction kinetics by optimizing reactant adsorption. As a result, P25(H)-PtAu achieves industrially relevant formaldehyde removal efficiency (97.8%) under ambient light conditions while maintaining scalability (10 g batches). This work provides a scalable framework for developing manufacturable photocatalysts, with immediate applications in heating, ventilation and air conditioning systems, and air purifiers.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12073571/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144025162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalytic Oxidative Removal of Volatile Organic Compounds (VOCs) by Perovskite Catalysts: A Review. 钙钛矿催化氧化去除挥发性有机物（VOCs）的研究进展

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090685

Tong Xu, Chenlong Wang, Yanfei Lv, Bin Zhu, Xiaomin Zhang

{"title":"Catalytic Oxidative Removal of Volatile Organic Compounds (VOCs) by Perovskite Catalysts: A Review.","authors":"Tong Xu, Chenlong Wang, Yanfei Lv, Bin Zhu, Xiaomin Zhang","doi":"10.3390/nano15090685","DOIUrl":"10.3390/nano15090685","url":null,"abstract":"Volatile organic compound (VOC) emissions have become a critical environmental concern due to their contributions to photochemical smog formation, secondary organic aerosol generation, and adverse human health impacts in the context of accelerated industrialization and urbanization. Catalytic oxidation over perovskite-type catalysts is an attractive technological approach for efficient VOC abatement. This review systematically evaluates the advancements in perovskite-based catalysts for VOC oxidation, focusing on their crystal structure-activity relationships, electronic properties, synthetic methodologies, and nanostructure engineering. Emphasis is placed on metal ion doping strategies and supported catalyst configurations, which have been demonstrated to optimize catalytic performance through synergistic effects. The applications of perovskite catalysts in diverse oxidation systems, including photocatalysis, thermal catalysis, electrocatalysis, and plasma-assisted catalysis, are comprehensively discussed with critical analysis of their respective advantages and limitations. It summarizes the existing challenges, such as catalyst deactivation caused by carbon deposition, sulfur/chlorine poisoning, and thermal sintering, as well as issues like low energy utilization efficiency and the generation of secondary pollutants. By consolidating current knowledge and highlighting future research directions, this review provides a solid foundation for the rational design of next-generation perovskite catalysts for sustainable VOC management.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12074013/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144011020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on the Interfaces in Organic Devices by Photoemission Spectroscopy. 有机器件中界面的光电发射光谱研究。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090680

Haipeng Xie, Xianjun Cheng, Han Huang

{"title":"Investigation on the Interfaces in Organic Devices by Photoemission Spectroscopy.","authors":"Haipeng Xie, Xianjun Cheng, Han Huang","doi":"10.3390/nano15090680","DOIUrl":"10.3390/nano15090680","url":null,"abstract":"Organic semiconductors have garnered significant interest owing to their low cost, flexibility, and suitability for large-area electronics, making them vital for burgeoning fields such as flexible electronics, wearable devices, and green energy technologies. The performance of organic electronic devices is crucially determined by their interfacial electronic structure. Specifically, interfacial phenomena such as band bending significantly influence carrier injection, transport, and recombination, making their control paramount for enhancing device performance. This review investigates the interplay among molecular orientation, interfacial charge transfer, and interfacial chemical reactions as the primary drivers of interface band bending. Furthermore, it critically examines effective strategies for optimizing interfacial properties via interface engineering, focusing on interlayer insertion and template layer methods. The review concludes with a summary and outlook, emphasizing the integration of interface design with material development and device architecture to realize next-generation, high-performance organic electronic devices exhibiting improved efficiency and stability.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12073329/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144033980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metasurface Design for Dual-Mode Sensors Based on Broken Symmetry Structure. 基于破对称结构的双模传感器元表面设计。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-30 DOI: 10.3390/nano15090687

Rundong Yang, Minjing Dai, Yihao Zhao, Xiangfu Wang

引用次数: 0

Nonlinear Magnetic Response Measurements in Study of Magnetic Nanoparticles Uptake by Mesenchymal Stem Cells. 磁性纳米颗粒被间充质干细胞摄取的非线性磁响应测量研究。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-04-29 DOI: 10.3390/nano15090675

Vyacheslav Ryzhov, Yaroslav Marchenko, Vladimir Deriglazov, Natalia Yudintceva, Oleg Smirnov, Alexandr Arutyunyan, Tatiana Shtam, Evgenii Ivanov, Stephanie E Combs, Maxim Shevtsov

{"title":"Nonlinear Magnetic Response Measurements in Study of Magnetic Nanoparticles Uptake by Mesenchymal Stem Cells.","authors":"Vyacheslav Ryzhov, Yaroslav Marchenko, Vladimir Deriglazov, Natalia Yudintceva, Oleg Smirnov, Alexandr Arutyunyan, Tatiana Shtam, Evgenii Ivanov, Stephanie E Combs, Maxim Shevtsov","doi":"10.3390/nano15090675","DOIUrl":"10.3390/nano15090675","url":null,"abstract":"Stem cells therapies offer a promising approach in translational oncology, as well as in regenerative medicine due to the tropism of these cells to the damage site. To track the distribution of stem cells, the latter could be labeled by MRI-sensitive superparamagnetic (SPM) iron oxide nanoparticles. In the current study, magnetic properties of the magnetic nanoparticles (MNPs) incorporated into the bone marrow-derived fetal mesenchymal stem cells (FetMSCs) were evaluated employing nonlinear magnetic response measurements. Synthesized dextran-coated iron oxide nanoparticles were additionally characterized by X-ray diffraction, transmission electron microscopy, and dynamic light scattering. The MNP uptake by the FetMSCs 24 h following coincubation was studied by longitudinal nonlinear response to weak alternating magnetic field with registration of the second harmonic of magnetization. Subsequent data processing using a formalism based on the numerical solution of the Fokker-Planck kinetic equation allowed us to determine magnetic and dynamic parameters and the state of MNPs in the cells, as well as in the culture medium. It was found that MNPs formed aggregates in the culture medium; they were absorbed by the cells during coincubation. The aggregates exhibited SPM regime in the medium, and the parameters of the MNP aggregates remained virtually unchanged in the cells, indicating the preservation of the aggregation state of MNPs inside the cells. This implies also the preservation of the organic shell of the nanoparticles inside FetMSCs. The accumulation of MNPs by mesenchymal stem cells gradually increased with the concentration of MNPs. Thus, the study confirmed that the labeling of MSCs with MNPs is an effective method for subsequent cell tracking as incorporated nanoparticles retain their magnetic properties.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 9","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12073591/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144006362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0