Nanoscale最新文献_第7页

First-Principles Investigation of Type-II GaO-MX 2 (M= Mo, W; X= S, Se) van der Waals Heterostructures for Enhanced Optoelectronic, Photocatalytic and Energy Conversion Applications ii型高- mx - 2 （M= Mo， W； X= S, Se）范德华异质结构在光电、光催化和能量转换中的第一性原理研究

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-14 DOI: 10.1039/d6nr02779b

Nawaf Bin Darwish,Tamader Alhazani,Asma Alkabsh,Hanan Akhdar,Samar Alghamdi,Nasser Alqahtani,Aladeem Alshammari Ahmad

{"title":"First-Principles Investigation of Type-II GaO-MX 2 (M= Mo, W; X= S, Se) van der Waals Heterostructures for Enhanced Optoelectronic, Photocatalytic and Energy Conversion Applications","authors":"Nawaf Bin Darwish,Tamader Alhazani,Asma Alkabsh,Hanan Akhdar,Samar Alghamdi,Nasser Alqahtani,Aladeem Alshammari Ahmad","doi":"10.1039/d6nr02779b","DOIUrl":"https://doi.org/10.1039/d6nr02779b","url":null,"abstract":"Two-dimensional (2D) van der Waals heterostructures (vdWHs) offer an effective strategy to enhanced the electronic, optical and photocatalytic properties of 2D materials. In this paper, first-principles calculations were used to calculate the structural stability, electronic properties, interfacial charge transfer, optical response and photocatalytic performance of GaO-MX 2 (M = Mo, W; X = S, Se) vdWHs. Six stacking configurations were investigated for each vdWHs, and their energetic and thermal stability were confirmed by binding energy, interlayer spacing and ab initio molecular dynamics simulations. GaO-MX 2 vdWHs showing indirect type-II band alignment, facilitating efficient charge separation and reducing electron and hole recombination.Charge density difference, work function and electrostatic potential confirmed significant interfacial charge redistribution and built-in electric fields. Furthermore, GaO-MX 2 vdWHs demonstrate strong visible-to-near-infrared light absorption with enhanced solar-harvesting capability. Photocatalytic water splitting indicates that GaO-MoS 2 and GaO-WS 2 satisfy the band-edge requirements for visible-light-driven water splitting, highlighting their potential for photocatalytic and optoelectronic applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"42 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Modeling intraframe dynamics in STEM imaging and their impact on three-dimensional nanoparticle reconstruction: When time blurs space STEM成像中的帧内动力学建模及其对三维纳米粒子重建的影响：当时间模糊空间时

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-14 DOI: 10.1039/d6nr02905a

Tom Stoops,Klaas Luyckx,Annick De Backer,Sandra Van Aert

{"title":"Modeling intraframe dynamics in STEM imaging and their impact on three-dimensional nanoparticle reconstruction: When time blurs space","authors":"Tom Stoops,Klaas Luyckx,Annick De Backer,Sandra Van Aert","doi":"10.1039/d6nr02905a","DOIUrl":"https://doi.org/10.1039/d6nr02905a","url":null,"abstract":"The unique properties of nanoparticles arise from their specific structures and sizes. In particular, the dynamics of atoms on the surface of a nanoparticle are of great interest as they may influence properties such as optical response, electronic structure, magnetic behavior, and catalytic activity. Annular dark field scanning transmission electron microscopy (ADF-STEM) combined with atom counting enables the 3D reconstruction of nanoparticles at the atomic scale from a single projection. This approach implicitly assumes that the nanoparticle remains static during the acquisition of a single image. While surface dynamics have been investigated through time series of images, the intraframe dynamics that occur during the acquisition of a single image have been ignored so far. Since single pixel dwell times are typically of the order of microseconds, significant atomic dynamics may occur during the acquisition of an entire image. In this study, we use a controlled simulation framework to investigate the effect of intraframe dynamics on the quantitative interpretation of ADF-STEM images by explicitly modeling atomic motion during image acquisition and analyzing its impact on atom counting and the 3D reconstruction. Our results provide a physics-based interpretation of single frame ADF-STEM images of simulated dynamic nanoparticles and show that 3D reconstructions closely approximate the nanoparticle's median occupancy structure, suppressing low occupancy positions corresponding to mobile surface features.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"1 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149173195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Ionic strength controls transition across distinct states of nanoparticle aggregation and assembly 离子强度控制着纳米粒子聚集和组装的不同状态的过渡

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr02498j

Elias Nakouzi,Xiaoxu Li,Pravalika Butreddy,Lili Liu,Kavin Chakravarthy Thangaraj,Haoyuan Shi,Jonathan David Bazak,Xin Zhang,Benjamin A Legg,Gregory Schenter,Jaehun Chun,James J. De Yoreo

{"title":"Ionic strength controls transition across distinct states of nanoparticle aggregation and assembly","authors":"Elias Nakouzi,Xiaoxu Li,Pravalika Butreddy,Lili Liu,Kavin Chakravarthy Thangaraj,Haoyuan Shi,Jonathan David Bazak,Xin Zhang,Benjamin A Legg,Gregory Schenter,Jaehun Chun,James J. De Yoreo","doi":"10.1039/d6nr02498j","DOIUrl":"https://doi.org/10.1039/d6nr02498j","url":null,"abstract":"Predicting the pathways and outcomes of nanomaterial systems requires a detailed understanding of the interplay between particle forces, interfacial structure, and emergent properties. Here we demonstrate that the ionic strength controls transitions among four distinct states of nanoparticle aggregation and assembly. Using gibbsite (γ-Al(OH)3) nanoplatelets as building blocks, we observed the slow assembly of mesocrystals with long-range order when the suspensions were aged in pure water for several months. Upon addition of salt, the particles statistically favored oriented aggregation along the (001) basal plane to form stacks that were only locally ordered. At higher ionic strength, aggregation became more rapid and random, producing fractal aggregates with Df = 2.4-2.6 that increased the viscosity of the suspension by 18-fold. Above 1 m, beyond the Debye-Hückel regime, the aggregation timescales dramatically increased and the steady-state aggregate size decreased, eventually stabilizing as monodisperse particles at extreme ionic strength. By establishing a unified \"state diagram\" that spans mesocrystal assembly, locally ordered stacking, diffusion-limited aggregation, and re-entrant stabilization, this work provides a framework for understanding nanomaterial assembly and resultant collective response, particularly under extreme conditions relevant to environmental management and nuclear waste processing.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"187 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Synthesis of Mn-CoO/Ni₃S₂@Ni₁₂P₅ composites with Tailored Microelectronic Structure for High-Efficiency Supercapacitors 用于高效超级电容器的定制微电子结构Mn-CoO/Ni₃S₂@Ni₁₂P₅复合材料的合成

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr02691e

Ping Yang,Luo Wang,Xuezhi Zhang,Xinyue Ma,Yao Jiang,Huiying Yao,Haoyuan Lv,Jin-Song Hu,Ping Chen

{"title":"Synthesis of Mn-CoO/Ni₃S₂@Ni₁₂P₅ composites with Tailored Microelectronic Structure for High-Efficiency Supercapacitors","authors":"Ping Yang,Luo Wang,Xuezhi Zhang,Xinyue Ma,Yao Jiang,Huiying Yao,Haoyuan Lv,Jin-Song Hu,Ping Chen","doi":"10.1039/d6nr02691e","DOIUrl":"https://doi.org/10.1039/d6nr02691e","url":null,"abstract":"The rational design of heterointerfaces, particularly those between sulfides and phosphides, represents a powerful yet challenging strategy for enhancing supercapacitor electrode performance by tailoring electronic structures. In this work, we fabricated a sulfide-phosphide heterostructure (Ni₃S₂/Ni₁₂P₅) and observed that it induces significant electronic structure modulation, which substantially improves electrochemical properties. Specifically, we constructed a unique pine-tower-like Ni₁₂P₅ layer on nickel foam via low-temperature phosphidation, followed by in-situ growth of Mn-CoO/Ni₃S₂ composites on this layer using a one-step hydrothermal process, forming a well-defined three-dimensional flower-like architecture. Experimental characterizations confirm the successful formation of the heterojunction, while density functional theory (DFT) simulations reveal a directional electron transfer of 0.246 e⁻ from Ni₃S₂ to Ni₁₂P₅ at the interface, reducing the interfacial resistance by approximately 80%. This electronic structure modulation, arising directly from the sulfidephosphide heterointerface, facilitates charge transfer and inhibits nanocrystal coarsening during cycling, thereby enhancing structural stability. The optimized electrode delivers an ultrahigh areal capacitance of 21.85 F cm -² at 1 mA cm⁻² and retains 85.7% of its capacity after 10,000 cycles at 15 mA cm -². Furthermore, the assembled hybrid supercapacitor achieves a high energy density of 111.75 Wh kg -¹, a power density of 1999.73 W kg -¹, and an outstanding cycling stability of 99.6% capacity retention over 10,000 cycles. This work elucidates the critical role of heterointerfacial electronic engineering, specifically the sulfide-phosphide heterostructure, in regulating charge storage dynamics, providing a valuable design principle for advanced energy storage materials.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"53 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Tuning backbone rigidity and structural regularity in naphthalene diimide-based conjugated polymers for semiconducting carbon nanotube sorting and field-effect transistors. 用于半导体碳纳米管分选和场效应晶体管的萘二亚胺基共轭聚合物骨架刚度和结构规整性的调整。

IF 5.2 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr02414a

Tsung-Yu Tsai, Guo-Hao Jiang, Yu-Che Kan, Ting-Chen Chang, Yi-Hsuan Hsu, Chi-Cheng Chiu, Chien-Chung Shih, Yan-Cheng Lin

{"title":"Tuning backbone rigidity and structural regularity in naphthalene diimide-based conjugated polymers for semiconducting carbon nanotube sorting and field-effect transistors.","authors":"Tsung-Yu Tsai, Guo-Hao Jiang, Yu-Che Kan, Ting-Chen Chang, Yi-Hsuan Hsu, Chi-Cheng Chiu, Chien-Chung Shih, Yan-Cheng Lin","doi":"10.1039/d6nr02414a","DOIUrl":"https://doi.org/10.1039/d6nr02414a","url":null,"abstract":"Semiconducting single-walled carbon nanotubes (s-SWCNTs) are emerging nanomaterials for next-generation high-performance electronics. However, their application is limited by the co-produced metallic tubes that degrade the device switching performance. Conjugated polymer extraction selectively wraps s-SWCNTs via π-π interactions, yet the effects of the backbone rigidity and structural regularity on sorting behavior remain unclear. Here, a series of donor-acceptor conjugated polymers comprising naphthalene diimide (NDI) acceptors paired with thiophene, bithiophene, and terthiophene donors (T1, T2, and T3), as well as an equimolar random copolymer of thiophene/terthiophene with NDI, T1-3 (a structural isomer of T2), are designed and evaluated as sorting agents. The sorting yield gradually increased from T1 to T3, suggesting that extended conjugation and enhanced backbone rigidity improve polymer-nanotube interactions. T3 exhibits the most stringent diameter selectivity (weighted-average 1.23 nm). All dispersions achieve effective s-SWCNT enrichment, with the purity metric φ decreasing monotonically as the sorting yield increases across the series, reflecting an inherent yield-purity trade-off. T1-3 contains T1-type flexibility and T3-type π-π affinity in a single polymer chain. The two segments act synergistically, endowing T1-3 with the highest sorting yield and the highest hole mobility (2.86 cm2 V-1 s-1) in field-effect transistor applications, at the cost of the lowest purity among the four polymers. The experimental results indicate that the backbone conjugation length and structural regularity are two important independent design parameters for conjugated polymers in s-SWCNT sorting.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" ","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149165453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Systematic insights into NiMoO@NiX/MoX (X = S, Se, Te) heterojunction nanoarrays for alkaline hydrogen evolution 系统的见解NiMoO@NiX/MoX （X = S, Se, Te）异质结纳米阵列碱氢演化

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr02619b

Xiao Sun,Yan Cui,Qiuyue Xiang,Qiongyao Wei,Yuling Li,Qingcheng Zhang,Baosheng Wang,Zhiwei Liu,Heng Chen

{"title":"Systematic insights into NiMoO@NiX/MoX (X = S, Se, Te) heterojunction nanoarrays for alkaline hydrogen evolution","authors":"Xiao Sun,Yan Cui,Qiuyue Xiang,Qiongyao Wei,Yuling Li,Qingcheng Zhang,Baosheng Wang,Zhiwei Liu,Heng Chen","doi":"10.1039/d6nr02619b","DOIUrl":"https://doi.org/10.1039/d6nr02619b","url":null,"abstract":"Developing efficient and stable non-precious metal electrocatalysts capable of accelerating the alkaline hydrogen evolution reaction (HER) is crucial for sustainable hydrogen production. Herein, self-supported NiMoO4@NiX/MoX (X = S, Se, Te) heterostructured nanoarrays were fabricated on nickel foam (NF) via a two-step hydrothermal method. Systematic investigations reveal that the introduction of chalcogenides effectively modulates the electronic structure and the oxygen vacancy (Ov) concentration of the catalysts. Notably, the NiMoO4@NiTe2/MoTe2 heterostructure delivered the highest Ov concentration and Mo4+ active site density, driven by the low electronegativity and large atomic radius of tellurium (Te) atoms. Density functional theory (DFT) calculations reveal that chalcogen regulation shifts the d-band center, thereby optimizing hydrogen adsorption, with Te exhibiting the most favorable adsorption behavior for enhanced HER activity. Consequently, the NiMoO4@NiTe2/MoTe2 catalyst required an overpotential of only 46 mV to achieve a current density of 10 mA cm−2 with a Tafel slope of 58.03 mV dec−1, while maintaining stable operation for 70 h. The structure–activity relationships of chalcogenide heterostructures for alkaline hydrogen evolution are revealed in this work.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"68 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Approach of Designed Imidazole-like Active Sites of Graphitic Catalysts from Selected Sources towards Efficient Oxygen Reduction 选择来源的石墨催化剂设计咪唑类活性位点实现高效氧还原的途径

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr01709f

Zhao Min Sheng,Wan Tao Feng,Xun Hong,Huan Huang,Chao Deng,Yingxin Sun,Sheng Han

{"title":"Approach of Designed Imidazole-like Active Sites of Graphitic Catalysts from Selected Sources towards Efficient Oxygen Reduction","authors":"Zhao Min Sheng,Wan Tao Feng,Xun Hong,Huan Huang,Chao Deng,Yingxin Sun,Sheng Han","doi":"10.1039/d6nr01709f","DOIUrl":"https://doi.org/10.1039/d6nr01709f","url":null,"abstract":"A novel method was carried out for investigating the growth of N-doped nanoporous graphitic structures from thermal pyrolysis. N-doped catalytic active centers were optimized by inheriting structure of 4-Methylimidazole.In three kinds of methylimidazoles, the weakest bond is between methyl and heterocyclic structure, according to calculation of bond energy by using density functional theory. Thus the methyl group was first broken in the pyrolysis, leading to they were prone to incomplete thermal pyrolysis, because the reaction time was only a few seconds in their floating catalytic pyrolysis; the rest of methylimidazoles formed clusters, and then their free radicals made clusters linked to graphitic structure, which led to 4-imidazole like (MIL) catalytic active centers formed. X-ray photoelectron spectroscopy analysis revealed that more than 50 % N-doped structure were imidazole-like structure among catalysts prepared from methylimidazoles. According to rotating ring-disk electrode tests and DFT calculations, the 4-MIL catalytic structure exhibited the highest catalytic activity among three catalysts prepared from methylimidazoles: the onset potential of 4MIL-GNCs was close to 20 % commercial Pt/C (0.94 V vs. 0.96 V (RHE)). The 4-MIL-GNCs had high electron transfer number (n=3.73) and high kinetic current density Jk = 7.12 mA cm-2 at 0.6 V; the rate determining step of 4-MIL-GNCs had the lowest energy barrier in oxygen reduction among catalysts prepared from methylimidazoles (0.67 vs. 0.79 and 1.16 eV).","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"36 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Designing liposomal EV mimetics by tuning mechanical properties 通过调整机械性能设计脂质体EV模拟物

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr01948j

Giulia Lodigiani,Stefania Garbujo,Pietro Parisse,Loredana Casalis,Luca Puricelli,Domenico Santagada,Angelo Musicò,Francesca Baldelli Bombelli,Alessandro Gori,Greta Bergamaschi

{"title":"Designing liposomal EV mimetics by tuning mechanical properties","authors":"Giulia Lodigiani,Stefania Garbujo,Pietro Parisse,Loredana Casalis,Luca Puricelli,Domenico Santagada,Angelo Musicò,Francesca Baldelli Bombelli,Alessandro Gori,Greta Bergamaschi","doi":"10.1039/d6nr01948j","DOIUrl":"https://doi.org/10.1039/d6nr01948j","url":null,"abstract":"Extracellular vesicles (EVs) exhibit unique biological performance in intercellular communication and drug delivery, yet their clinical translation is hindered by limited scalability, compositional heterogeneity, and regulatory complexity. Here, we report the rational design at the nanoscale of fully synthetic liposomal EV mimetics (Lipo-EVs) engineered to replicate the key biomechanical properties of small EVs while retaining the manufacturability and compositional control of synthetic systems. By systematically tuning membrane lipid composition, with a particular focus on cholesterol content, we identify a formulation that closely reproduces the nanoscale membrane packing, structure–property relationships, and nanomechanical behavior of HEK293-derived EVs. Advanced mechano-fluorescence assays and atomic force microscopy reveal that Lipo-EVs interact with model membranes in a manner closely resembling native EVs, especially under cholesterol-rich conditions, highlighting key principles of nanoscale membrane organization and interface mechanics. The optimized Lipo-EVs further display high colloidal stability, robust nanoscale integrity, compatibility with lyophilization and recovery, and efficient, homogeneous cellular uptake without detectable cytotoxicity.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"6 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 O–V–O Covalent Bonding at the BiVO4/FeNiOx Interface Boosts Charge Transfer for Efficient Photoelectrochemical Water Splitting BiVO4/FeNiOx界面上的协同O-V-O共价键促进了高效光电化学水分解的电荷转移

IF 6.7 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr03104h

Rongzhe Zhao,Peng Guo,Rong Mo,Chao Tang,Yonghua Tang,Hongxing Li

{"title":"Synergistic O–V–O Covalent Bonding at the BiVO4/FeNiOx Interface Boosts Charge Transfer for Efficient Photoelectrochemical Water Splitting","authors":"Rongzhe Zhao,Peng Guo,Rong Mo,Chao Tang,Yonghua Tang,Hongxing Li","doi":"10.1039/d6nr03104h","DOIUrl":"https://doi.org/10.1039/d6nr03104h","url":null,"abstract":"Efficient charge separation at the BiVO4/cocatalyst interface is crucial for high-performance photoelectrodes, as it directly determines the availability of surface charges for solar water oxidation. However, achieving robust molecular-level connections to ensure superior interfacial quality remains challenging. Herein, we report a two-step photo-assisted deposition method followed by calcination to introduce vanadyl ions (VO2+) to form an O–V–O covalent structure at the BiVO4/FeNiOx interface (denoted as BiVO4/VOFeNiOx), thereby enabling a strong interfacial interaction. For comparison, direct FeNiOx deposition yields 4.23 mA cm–2 at 1.23 V vs. RHE, whereas the optimized BiVO4/VOFeNiOx photoanode achieves 6.69 mA cm–2 under AM 1.5 G illumination, corresponding to a 3.9-fold enhancement over pristine BiVO4. Furthermore, this architecture exhibits a 3.5-fold improvement in hole migration rate and excellent operational stability exceeding 30 hours. Systematic studies reveal that the introduction of O–V–O interfacial bonds induces a redistribution of electron density and strong electronic coupling between BiVO4 and FeNiOx. This optimized interfacial configuration facilitates charge transport, culminating in a substantial 76% reduction in charge transfer resistance. This work highlights the potential of interfacial engineering in facilitating charge transport, providing insights into the rational design of efficient photoanodes for solar energy conversion.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"232 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149152779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Amino-functionalized MIL-101(Fe)-confined Au nanostructures for advanced electrochemical detection of H₂O₂ in Alzheimer's disease research. 氨基功能化MIL-101（Fe）约束的Au纳米结构用于阿尔茨海默病研究中H2O2的高级电化学检测。

IF 5.2 3区材料科学

Nanoscale Pub Date : 2026-10-13 DOI: 10.1039/d6nr01767c

Sakthivel Kogularasu, Himanshu Kumar, Chih-Kuang Liang, Hsin-Chieh Kung, Balasubramanian Sriram, Sea-Fue Wang, Bo-Wan Huang, Guo-Ping Chang-Chien, Yu-Te Lin

{"title":"Amino-functionalized MIL-101(Fe)-confined Au nanostructures for advanced electrochemical detection of H2O2 in Alzheimer's disease research.","authors":"Sakthivel Kogularasu, Himanshu Kumar, Chih-Kuang Liang, Hsin-Chieh Kung, Balasubramanian Sriram, Sea-Fue Wang, Bo-Wan Huang, Guo-Ping Chang-Chien, Yu-Te Lin","doi":"10.1039/d6nr01767c","DOIUrl":"https://doi.org/10.1039/d6nr01767c","url":null,"abstract":"Oxidative stress is a fundamental pathological contributor to Alzheimer's disease and is closely linked to amyloid-beta-mediated toxicity, tau dysregulation, mitochondrial impairment, and progressive neuronal degeneration. Among the associated reactive oxygen species, hydrogen peroxide (H2O2) is a mechanistically relevant redox intermediate and an important oxidative stress biomarker. Herein, an Au@NH2-MIL-101(Fe) hybrid was rationally engineered as an electrocatalytically active sensing interface for H2O2 determination. The hybrid was constructed by integrating conductive Au nanodomains with an amino-functionalized Fe-based metal-organic framework, thereby combining the high surface area, porous architecture, and accessible coordination environment of NH2-MIL-101(Fe) with the superior conductivity and catalytic activity of Au. Electrochemical investigations revealed that Au@NH2-MIL-101(Fe)/SPCE exhibited substantially enhanced interfacial electron-transfer kinetics and electrocatalytic reduction of H2O2 relative to bare SPCE, MIL-101(Fe), and NH2-MIL-101(Fe). Under optimized conditions, the sensor delivered a linear range of 0.01 to 429.7 μM and a limit of detection of 0.063 µM. In addition, the platform showed good selectivity, operational stability, reproducibility, and satisfactory performance in H2O2-spiked serum and urine samples, highlighting its promise for oxidative stress-related electroanalysis relevant to Alzheimer's disease.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" ","pages":""},"PeriodicalIF":5.2,"publicationDate":"2026-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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