Nanomaterials最新文献_第2页

S-Doped FeOOH Layers as Efficient Hole Transport Channels for the Enhanced Photoelectrochemical Performance of Fe₂O₃. s掺杂FeOOH层作为Fe2O3光电性能增强的有效空穴传输通道。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-20 DOI: 10.3390/nano15100767

Yanhong Zhou, Yiran Zhang, Boyang Jing, Xiaoyuan Liu, Debao Wang

{"title":"S-Doped FeOOH Layers as Efficient Hole Transport Channels for the Enhanced Photoelectrochemical Performance of Fe2O3.","authors":"Yanhong Zhou, Yiran Zhang, Boyang Jing, Xiaoyuan Liu, Debao Wang","doi":"10.3390/nano15100767","DOIUrl":"10.3390/nano15100767","url":null,"abstract":"Hematite (Fe2O3) has been accepted as a promising and potential photo(electro)catalyst. However, its poor carrier separation and transfer efficiency has limited its application for photoelectrocatalytic (PEC) water oxidation. Herein, a S-doped FeOOH (S:FeOOH) layer was rationally designed and grown on Fe2O3 to construct a S:FeOOH/Fe2O3 composite photoanode. The obtained S:FeOOH/Fe2O3 photoanodes were fully characterized. The surface injection efficiency for Fe2O3 was then significantly increased with a high ηsurface value of 92.8%, which increases to 2.98 times for Fe2O3 and 2.16 times for FeOOH/Fe2O3, respectively. With 2.43 mA cm‒2 at 1.23 V, the optimized S:FeOOH/Fe2O3 photoanode was entrusted with a higher photocurrent density. The onset potential for S:FeOOH/Fe2O3 cathodically shifts 70 mV over Fe2O3. The improved PEC performance suggests that the S:FeOOH layer acts as ultrafast transport channels for holes at the photoanode/electrolyte interface, suppressing surface charge recombination. A Z-scheme band alignment between Fe2O3 and S:FeOOH was deduced from the UV-Vis and UPS spectra to promote charge transfer. This method provides an alternative for the construction of photoanodes with enhanced PEC water splitting performance.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12113675/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151264","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

Bifunctional 4,5-Diiodoimidazole Interfacial Engineering Enables Simultaneous Defect Passivation and Crystallization Control for High-Efficiency Inverted Perovskite Solar Cells. 双功能4,5-二碘咪唑界面工程实现了高效倒置钙钛矿太阳能电池的缺陷钝化和结晶控制。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-20 DOI: 10.3390/nano15100766

Huaxi Gao, Yu Zhang, Ihtesham Ghani, Min Xin, Danish Khan, Junyu Wang, Di Lu, Tao Cao, Wei Chen, Xin Yang, Zeguo Tang

{"title":"Bifunctional 4,5-Diiodoimidazole Interfacial Engineering Enables Simultaneous Defect Passivation and Crystallization Control for High-Efficiency Inverted Perovskite Solar Cells.","authors":"Huaxi Gao, Yu Zhang, Ihtesham Ghani, Min Xin, Danish Khan, Junyu Wang, Di Lu, Tao Cao, Wei Chen, Xin Yang, Zeguo Tang","doi":"10.3390/nano15100766","DOIUrl":"10.3390/nano15100766","url":null,"abstract":"Despite the rapid efficiency advancement of perovskite solar cells (PSCs), non-radiative recombination at the buried interface between self-assembled monolayers (SAMs) and perovskite remains a critical bottleneck, primarily due to interfacial defects and energy level mismatch. In this study, we demonstrate a bifunctional interlayer engineering strategy by introducing 4,5-diiodoimidazole (4,5-Di-I) at the Me-4PACz/perovskite interface. This approach uniquely addresses two fundamental limitations of SAM-based interfaces: the insufficient defect passivation capability of conventional Me-4PACz due to steric hindrance effects and the poor perovskite wettability on hydrophobic SAM surfaces that exacerbates interfacial voids. The imidazole derivatives not only form strong Pb-N coordination bonds with undercoordinated Pb2+ but also modulate the surface energy of Me-4PACz, enabling the growth of pinhole-free perovskite films with preferential crystal orientation. The champion device with 4,5-Di-I modification achieves a power conversion efficiency (PCE) of 24.10%, with a VOC enhancement from 1.12 V to 1.14 V, while maintaining 91% of initial PCE after 1300 h in N₂ atmosphere (25 °C), demonstrating superior stability under ISOS-L-2 protocols. This work establishes a universal strategy for interfacial multifunctionality design, proving that simultaneous defect suppression and crystallization control can break the long-standing trade-off between efficiency and stability in solution-processed photovoltaics.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12114383/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151391","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

Non-Bosonic Damping of Spin Waves in van der Waals Ferromagnetic Monolayers. 范德华铁磁单层中自旋波的非玻色子阻尼。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-20 DOI: 10.3390/nano15100768

Michael G Cottam, Bushra Hussain

引用次数: 0

First-Principles Calculations of Plasmon-Induced Hot Carrier Properties of μ-Ag₃Al. μ-Ag3Al等离子体诱导热载流子性质的第一性原理计算。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-19 DOI: 10.3390/nano15100761

Zihan Zhao, Hai Ren, Yucheng Wang, Xiangchao Ma, Jiali Jiang, Linfang Wei, Delian Liu

{"title":"First-Principles Calculations of Plasmon-Induced Hot Carrier Properties of μ-Ag3Al.","authors":"Zihan Zhao, Hai Ren, Yucheng Wang, Xiangchao Ma, Jiali Jiang, Linfang Wei, Delian Liu","doi":"10.3390/nano15100761","DOIUrl":"10.3390/nano15100761","url":null,"abstract":"Non-radiative decay of surface plasmon (SP) offers a novel paradigm for efficient conversion of photons into carriers. However, the narrow bandwidth of SP has been a significant obstacle to the widespread applications. Previously, research and applications mainly focused on noble metals such as Au, Ag, and Cu. In this article, we report an Ag-Al alloy material, μ-Ag3Al, in which the surface plasmon operating bandwidth is 1.7 times that of Ag and hot carrier transport properties are comparable with those of AuAl. The results show that μ-Ag3Al allows efficient direct interband electronic transitions from ultraviolet (UV) to near infrared range. Spherical nanoparticles of μ-Ag3Al exhibit the localized surface plasmon resonance (LSPR) effect in the ultraviolet region. Its surface plasmon polariton (SPP) shows strong non-radiative decay at 3.36 eV, which is favorable for the generation of high-energy hot carriers. In addition, the penetration depth of SPP in μ-Ag3Al remains high across the UV to the near-infrared range. Moreover, the transport properties of hot carriers in μ-Ag3Al are comparable with those in Al, borophene and Au-Al intermetallic compounds. These properties can provide guidance for the design of plasmon-based photodetectors, solar cells, and photocatalytic reactors.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12113740/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151502","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

Preparation and Properties of High-Toughness AlMgB₁₄ Material. 高韧性AlMgB14材料的制备及性能研究

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-19 DOI: 10.3390/nano15100764

Tianxing Sun, Zhaohua Luo, Yusen Duan, Jingxian Zhang

{"title":"Preparation and Properties of High-Toughness AlMgB14 Material.","authors":"Tianxing Sun, Zhaohua Luo, Yusen Duan, Jingxian Zhang","doi":"10.3390/nano15100764","DOIUrl":"10.3390/nano15100764","url":null,"abstract":"This study employed a composite method using TiB2-HfC dual-component additive to prepare AlMgB14 ceramic composite material. The morphology and phase composition of the AlMgB14 ceramic powder were characterized using scanning electron microscopy (SEM) and an X-ray diffractometer (XRD). The phase evolution, microstructure, and mechanical properties of the sintered composite were investigated. The experimental results indicate that the AlMgB14-based composite sintered at 1450 °C exhibited excellent comprehensive properties, with a Vickers hardness of 25.3 GPa, a fracture toughness of 6.9 MPa·m1/2, a bending strength of 615 MPa, and a density of 3.22 g/cm3. Additionally, a solid solution second phase was observed in the AlMgB14 material. Through a dual-component synergistic composite strategy, this study enhanced the toughness of AlMgB14 material without significantly compromising other properties, providing a new design approach for the development of low-cost, high-performance AlMgB14-based composites.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12114079/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151217","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

Observation of Thickness-Modulated Out-of-Plane Spin-Orbit Torque in Polycrystalline Few-Layer Td-WTe₂ Film. 多晶少层Td-WTe2薄膜中厚度调制的面外自旋轨道转矩观察。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-19 DOI: 10.3390/nano15100762

Mingkun Zheng, Wancheng Zhang, You Lv, Yong Liu, Rui Xiong, Zhenhua Zhang, Zhihong Lu

{"title":"Observation of Thickness-Modulated Out-of-Plane Spin-Orbit Torque in Polycrystalline Few-Layer Td-WTe2 Film.","authors":"Mingkun Zheng, Wancheng Zhang, You Lv, Yong Liu, Rui Xiong, Zhenhua Zhang, Zhihong Lu","doi":"10.3390/nano15100762","DOIUrl":"10.3390/nano15100762","url":null,"abstract":"The low-symmetry Weyl semimetallic Td-phase WTe2 exhibits both a distinct out-of-plane damping torque (τDL) and exceptional charge-spin interconversion efficiency enabled by strong spin-orbit coupling, positioning it as a prime candidate for spin-orbit torque (SOT) applications in two-dimensional transition metal dichalcogenides. Herein, we report on thickness-dependent unconventional out-of-plane τDL in chemically vapor-deposited (CVD) polycrystalline Td-WTe2 (t)/Ni80Fe20/MgO/Ti (Td-WTN-t) heterostructures. Angle-resolved spin-torque ferromagnetic resonance measurements on the Td-WTN-12 structure showed significant spin Hall conductivities of σSH,y = 4.93 × 103 (ℏ/2e) Ω-1m-1 and σSH,z = 0.81 × 103 (ℏ/2e) Ω-1m-1, highlighting its potential for wafer-scale spin-orbit torque device applications. Additionally, a detailed examination of magnetotransport properties in polycrystalline few-layer Td-WTe2 films as a function of thickness revealed a marked amplification of the out-of-plane magnetoresistance, which can be ascribed to the anisotropic nature of charge carrier scattering mechanisms within the material. Spin pumping measurements in Td-WTN-t heterostructures further revealed thickness-dependent spin transport properties of Td-WTe2, with damping analysis yielding an out-of-plane spin diffusion length of λSD ≈ 14 nm.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12113999/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151209","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

Highly Wear-Resistant Triboelectric Nanogenerators Based on Fluorocarbon-Graphene Hybrids. 基于氟碳-石墨烯混合材料的高耐磨摩擦电纳米发电机。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-19 DOI: 10.3390/nano15100763

Ke Zhang, Liang Zhang, Jinlong Ren, Yubin Li, Zaibang Wu, Kaihan Shan, Lin Zhang, Lingyu Wan, Tao Lin

引用次数: 0

Stripe-Patterned Al/PDMS Triboelectric Nanogenerator for a High-Sensitive Pressure Sensor and a Novel Two-Digit Switch with Surface-Edge Enhanced Charge Transfer Behavior. 用于高灵敏度压力传感器的条纹图案Al/PDMS摩擦电纳米发电机和一种具有表面边缘增强电荷转移行为的新型两位开关。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-19 DOI: 10.3390/nano15100760

Chung-Yu Yu, Chia-Chun Hsu, Chin-An Ku, Chen-Kuei Chung

{"title":"Stripe-Patterned Al/PDMS Triboelectric Nanogenerator for a High-Sensitive Pressure Sensor and a Novel Two-Digit Switch with Surface-Edge Enhanced Charge Transfer Behavior.","authors":"Chung-Yu Yu, Chia-Chun Hsu, Chin-An Ku, Chen-Kuei Chung","doi":"10.3390/nano15100760","DOIUrl":"10.3390/nano15100760","url":null,"abstract":"A triboelectric nanogenerator (TENG) holds significant potential as a self-powered pressure sensor due to its ability to convert mechanical energy into electrical energy. The output voltage of a TENG is directly correlated with the applied pressure, making it highly suitable for pressure sensing applications. Among the key factors influencing TENG performance, the microstructure on the surface plays a crucial role. However, the effect of surface microstructure on charge transfer behavior remains relatively underexplored. Here, a stripe-patterned rough TENG (SR-TENG) fabricated by laser ablation and molding is proposed. The stripe-patterned rough surface exhibits excellent deformation properties, allowing for more effective contact area between the tribolayers. Additionally, the localized surface-edge enhanced electric field at the stripe boundaries improves surface charge transfer, thereby enhancing overall output performance. The SR-TENG achieved an open-circuit voltage of 97 V, a short-circuit current of 59.6 μA, an instantaneous power of 3.55 mW, and a power density of 1.54 W/m2. As an energy harvester, the SR-TENG successfully powered 150 LEDs. A linear relationship between applied pressure and output voltage was established with a coefficient of determination R2 = 0.94, demonstrating a high sensitivity of 14.14 V/kPa. For practical application, a novel self-powered two-digit pressure switch was developed based on the SR-TENG. This system enables the control of two different LEDs using a single TENG device, triggered by applying a light or hard press.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12113814/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151280","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

Organic Dinitrates: Electrolyte Additives That Increase the Energy Densities of Lithium/Graphite Fluoride Batteries. 有机硝酸盐：提高锂/石墨氟化电池能量密度的电解质添加剂。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-18 DOI: 10.3390/nano15100758

Junwei Xiao, Lingchen Kong, Yong Wang, Ziyue Zhao, Yu Li, Wei Feng

{"title":"Organic Dinitrates: Electrolyte Additives That Increase the Energy Densities of Lithium/Graphite Fluoride Batteries.","authors":"Junwei Xiao, Lingchen Kong, Yong Wang, Ziyue Zhao, Yu Li, Wei Feng","doi":"10.3390/nano15100758","DOIUrl":"10.3390/nano15100758","url":null,"abstract":"Li/graphite fluoride (Li/CFx) batteries display the highest energy densities among those of commercially available primary Li batteries but fail to satisfy the high-performance requirements of advanced applications. To address this drawback, two liquid organic dinitrates, namely, 1,4-butanediol dinitrate (BDE) and 2,2,3,3-tetrafluoro-1,4-butanediol dinitrate (TBD), were employed as high-energy energetic materials, and they were highly compatible with the electrolytes of Li/CFx batteries. The use of Super P electrodes confirmed that the reduction reaction mechanisms of both nitrate ester-based compounds delivered considerable specific capacities, associated with discharge potentials matching that of the Li/CFx battery. When considering the combined mass of the electrolyte and cathode as the active material, the overall energy densities of the Li/CFx batteries increased by 25.3% (TBD) and 20.8% (BDE), reaching 1005.50 and 969.1 Wh/kg, respectively. The superior performance of TBD was due to the synergistic effects of the high electronegativities and levels of steric hindrance of the F atoms. Moreover, the nanocrystal LiF particles generated by TBD induced crack formation within the fluorinated graphite, increasing the lithium-ion accessible surface area and enhancing its utilization efficiency. These combined factors enhanced the reactivity of TBD and facilitated its involvement in electrochemical reactions, thus improving the capacity of the battery. The developed strategy enables the facile, cost-effective enhancement of the capacities of Li/CFx batteries, paving the way for their practical use in energy-demanding devices.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12114438/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151212","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

Mathematical and Physical Description of Transport Phenomena in Heat Pipes Based on Nanofluids: A Review. 基于纳米流体的热管输运现象的数学和物理描述

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2025-05-18 DOI: 10.3390/nano15100757

Marina S Astanina, Nikita S Gibanov, Igor V Miroshnichenko, Egor A Tarasov, Mikhail A Sheremet

{"title":"Mathematical and Physical Description of Transport Phenomena in Heat Pipes Based on Nanofluids: A Review.","authors":"Marina S Astanina, Nikita S Gibanov, Igor V Miroshnichenko, Egor A Tarasov, Mikhail A Sheremet","doi":"10.3390/nano15100757","DOIUrl":"10.3390/nano15100757","url":null,"abstract":"Heat pipes are highly efficient heat transfer devices relying on phase-change mechanisms, with performance heavily influenced by working fluids and operational dynamics. This review article comprehensively examines hydrodynamics and heat transfer in heat pipes, contrasting conventional working fluids with nanofluid-enhanced systems. In the present work we discuss mathematical models governing fluid flow and heat transfer, emphasizing continuum and porous media approaches for wick structures. Functional dependencies of thermophysical properties (e.g., viscosity, surface tension, thermal conductivity) are reviewed, highlighting temperature-driven correlations and nanofluid modifications. Transport mechanisms within wicks are analyzed, addressing capillary-driven flow, permeability, and challenges posed by nanoparticle integration. Fourth, interfacial phase-change conditions-evaporation and condensation-are modeled, focusing on kinetic theory and empirical correlations. Also, numerical and experimental results are synthesized to quantify performance enhancements from nanofluids, including thermal resistance reduction and capillary limit extension, while addressing inconsistencies in stability and pressure drop trade-offs. Finally, applications spanning electronics cooling, aero-space, and renewable energy systems are evaluated, underscoring nanofluids' potential to expand heat pipe usability in extreme environments. The review identifies critical gaps, such as long-term nanoparticle stability and scalability of lab-scale models, while advocating for unified frameworks to optimize nanofluid selection and wick design. This work serves as a foundational reference for researchers and engineers aiming to advance heat pipe technology through nanofluid integration, balancing theoretical rigor with practical feasibility.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"15 10","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12113962/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144151197","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