Nanoscale最新文献

{"title":"Influence of nanoendoscopy AFM imaging of intracellular structures on cell proliferation and stress response.","authors":"Mohammad Mubarak Hosain,Mohammad Shahidul Alam,Takehiko Ichikawa,Keisuke Miyazawa,Kazuki Miyata,Takeshi Fukuma","doi":"10.1039/d5nr02195b","DOIUrl":"https://doi.org/10.1039/d5nr02195b","url":null,"abstract":"The recent development of nanoendoscopy atomic force microscopy (NE-AFM) has enabled direct imaging of nanodynamics within living cells. However, this technique involves repeated nanoneedle tip insertions or 2D scans of the inserted tip, raising concerns about its impact on cellular viability and function. Although previous fluorometric assays indicated no lethal damage to cells, the potential effects on cellular functions remain unclear. To address this issue, we have investigated the influence of 2D/3D NE-AFM imaging on cell proliferation and calcium stress responses. Our findings reveal that typical 2D/3D NE-AFM imaging conditions do not significantly affect cell division intervals. For calcium stress responses, 2D imaging with a scan size smaller than 1 μm minimally induces calcium responses, whereas 3D imaging triggers transient calcium responses at the beginning of the scan. These responses stabilize within ∼15 minutes, allowing intracellular calcium levels to return to baseline for the remaining imaging period. This study contributes to establishing conditions for NE-AFM imaging with a minimal impact on the cell functions, facilitating accurate interpretation of the obtained results, and advancing our understanding of various intracellular nanodynamics.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"38 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103400","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}

{"title":"Harnessing Sonochemistry in MnCoP2O7 as Trifunctional Electrodes for Symmetric Supercapacitor and Electrochemical Water Splitting Applications","authors":"Pavithra Karthikesan, Jayachandran Madhavan, Alagiri Mani","doi":"10.1039/d5nr02180d","DOIUrl":"https://doi.org/10.1039/d5nr02180d","url":null,"abstract":"Bimetallic pyrophosphates remain relatively unexplored despite their potential for high specific capacitance and electrocatalytic efficiency in an alkaline medium. Notably, this research represents the first successful synthesis of manganese cobalt pyrophosphate via ultrasonic assisted synthesis followed by calcination at 500°C which accentuates pivotal role in energy storage and conversion as an effective catalyst. The samples were systematically characterized to determine their phase composition, structural evaluation, functional groups, morphological features, surface elemental composition, and surface area determination. Our research uncovers that the incorporation of cobalt significantly enhances the electrochemical active sites of the material. The synthesized MnCoP<small>₂</small>O<small>₇</small> exhibits a remarkable specific capacitance and capacity values of 405.2 F g<small>^-1</small> and 202.6 C g<small>^-1</small> in an alkaline electrolyte of 1 M KOH at 1 A g<small>^-1</small>, maintaining exceptional stability of 102.8% over 10000 cycles. Furthermore, the assembled symmetric supercapacitor achieved an energy density of 16.2 W h kg<small>^-1</small> at a power density of 399.9 W kg<small>^-1</small> retaining 78.2% capacitance over 20000 cycles. Additionally, MnCoP<small>₂</small>O<small>₇</small> demonstrates an exceptional hydrogen evolution reaction performance, with a low overpotential of 212 mV at a current density of 50 mA cm<small>^-2</small> and a Tafel value of 135.6 mV dec<small>^-1</small>. Similarly, its oxygen evolution reaction performance evidenced an overpotential of 349 mV at a current density of 50 mA cm<small>^-2</small> and a Tafel value of 169.2 mV dec<small>^-1</small>. The MnCoP<small>₂</small>O<small>₇</small> catalyst achieves a current density of 10 mA cm<small>^-2</small> at a cell voltage of 1.57 V, demonstrating its efficiency for overall water splitting. These values represent the highest performance reported to date for bimetal pyrophosphates in 1 M KOH electrolyte. Furthermore, these findings establish a rational approach for synthesizing electrocatalysts suitable for trifunctional applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"78 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103865","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}

{"title":"Simultaneously modulating morphology and electronic structure of carbon-fiber: A strategy for constructing efficient electrocatalyst to on-site produce H2O2 in wide pH","authors":"Lizhi Liu, Qing Xiong, Caixia Li, Chenglu Yan, Huaqiao Peng, Huiyong Wang, Juan Du, Baozhan Zheng, Yong Guo","doi":"10.1039/d5nr03411f","DOIUrl":"https://doi.org/10.1039/d5nr03411f","url":null,"abstract":"On-site production of H 2 O 2 via a two-electron oxygen reduction reaction (2e -ORR) presents a sustainable alternative to the energy-intensive anthraquinone process. However, the development of efficient and stable electrocatalysts in wide pH remains a critical challenge. Herein, fluorine-doped porous carbon fiber (F-CF) were synthesized by simply annealing the electrospun of polytetrafluoroethylene (PTFE) and polyvinylpyrrolidone (PVP). The obtained F-CF has a hierarchical macro/meso/micro-pores structure due to the decomposition of PTFE, and exhibits excellent 2e -ORR catalytic activity and durability for H 2 O 2 production in wide pH (3~14). In alkaline media, a remarkable H 2 O 2 yields of 7.30 mol h -1 g cat. -1 (0.3 V vs. RHE) with a Faraday efficiency (FE) over 90% can be obtained. Notably, the F-CF maintains outstanding performance and stability under neutral and even acidic conditions. Density functional theory (DFT) calculations reveal that the F-doping regulates the electronic structure of CF, which can enhance its ability for O 2 adsorption and thus improve the catalytic performance for H 2 O 2 production. The practicability of F-CF was further certified by the on-site produced H 2 O 2 at different pH: bleaching (alkaline), disinfection (neutral), and dye degradation (acidic). This work opens up a new way to design efficient carbon-based 2e -ORR electrocatalysts by the morphology and electronic structure engineering, broadening the prospects of decentralized H 2 O 2 production in many fields.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"11 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103851","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}

{"title":"Thermal conversion of metal hydroxide acrylate nanoparticles immobilized on TiO2 toward noble-metal-free photocatalytic H2 production.","authors":"Naoki Tarutani,Rei Nitomakida,Kiyofumi Katagiri,Kei Inumaru,Sayako Inoué,Hiroki Yamada,Toshiaki Ina,Yousuke Ooyama","doi":"10.1039/d5nr02166a","DOIUrl":"https://doi.org/10.1039/d5nr02166a","url":null,"abstract":"Developing efficient and noble-metal-free photocatalysts for hydrogen evolution is a central challenge in solar fuel production. Herein, we report a strategy to enhance the photocatalytic activity of rutile TiO2 by immobilising nickel hydroxide acrylate (NHA) nanoparticles, which serve as thermally convert cocatalyst precursors. Upon heat-treatment under an Ar atmosphere, the NHA nanoparticles decompose to form a composite nanostructure comprising sub-10 nm Ni/NiOx and carbon nanodomains. The optimised hybrid system exhibited a 37-fold increase in photocatalytic H2 evolution activity compared to pristine TiO2 under UV light irradiation. Analysis of band edge potentials revealed a downward shift in the conduction band minimum, facilitating more efficient reduction processes. In contrast, a control sample prepared using Ni(NO3)2 resulted in inactive NiOx domains and poor interfacial bonding, leading to suppressed activity. These findings demonstrate that NHA-derived cocatalysts provide a versatile platform for constructing noble-metal-free photocatalytic systems through controlled interfacial nanostructuring, offering new avenues for designing advanced solar-to-fuel materials.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"23 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103399","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}

{"title":"Enhancing Stability of Red-Emitting CsPbIₓBr₃₋ₓ QDs for Advance Display Applications","authors":"Bin Wang, Fengyi Zhang, Rongqiu Lv, Jun Chen, Haibo Zeng","doi":"10.1039/d5nr03199k","DOIUrl":"https://doi.org/10.1039/d5nr03199k","url":null,"abstract":"All-inorganic metal halide perovskite (MHP) material has emerged as promising candidates for next-generation displays-owing to their narrow emission spectra, near-unity photoluminescence quantum yield (PLQY), and exceptional defect tolerance. However, the development of pure red-emitting devices (620-660 nm) based on cesium lead iodide/bromide (CsPbIxBr3-x) quantum dots (QDs) remains challenging because of their susceptibility to environmental factors (moisture, heat, oxygen, and light), as well as their intrinsic structural instability. Recent progress in the engineering of stable red-emitting CsPbIxBr3-x QDs has centered on three main approaches: ion doping, ligand exchange, and encapsulation strategies, each offering distinct physicochemical characteristics and complementary advantages in stabilization. This review highlights various causes of instability and degradation mechanisms of red-emitting cesium lead iodide bromide QDs and discusses innovative approaches to enhance their stability and optoelectronic performance. By tailoring the QD structure and shielding it from environment factors, significant progress has been made in prolonging its luminescence lifetime and performance. Besides, we outline future research directions, emphasizing the need for scalable and sustainable solutions to unlock the full potential of MHP QDs in advanced-high-efficiency display technologies.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"25 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103884","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}

{"title":"Boosting nanoparticle yield: enhanced atom-to-nanoparticle conversion in gas aggregation.","authors":"Pavel Curda,Alexej Horak,Abel Koshy,Petr Sezemsky,Vitezslav Stranak","doi":"10.1039/d5nr02126j","DOIUrl":"https://doi.org/10.1039/d5nr02126j","url":null,"abstract":"Nanoparticles are atomic aggregates with diameters around 10 nm and are highly valued for their unique properties and broad technological applications. Their synthesis via physical methods offers key advantages over chemical methods, including high purity, precise size control, and material versatility, whilst also being environmentally friendly. A current disadvantage of physical synthesis is that they typically suffer from low production yields and inefficient atom-to-nanoparticle conversion. This paper describes the mechanisms of nanoparticle growth and presents a strategy to enhance their production in gas-aggregation systems. The approach leverages pulsed magnetron sputtering, where atoms serve as building blocks for nanoparticle formation. By optimizing pulse duration and repetition frequency, this paper shows significant improvement in atom-to-nanoparticle conversion demonstrating improved nanoparticle production by an order of magnitude without increasing the amount of sputtered material or overall energy consumption. This advancement paves the way for more cost-effective and scalable nanoparticle manufacturing.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"1 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103401","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}

{"title":"Upgrading commercial plastics for high-yield production of porous carbon electrode materials","authors":"Yanqin Zheng, Fuwang Wen, Hai Li, Fu Fangbao, Xihong Zu, Yanwei Wang, Almagul Mentbayeva, Wenli Zhang","doi":"10.1039/d5nr03051j","DOIUrl":"https://doi.org/10.1039/d5nr03051j","url":null,"abstract":"The recycling of commercial plastics can decrease dependence on fossil fuels. The preparation of carbon electrode materials from commercial plastics can enable the upgrading of waste plastics. Converting low-recycled commercial plastics to value-added porous carbon materials showed great potential toward low-carbon development. However, the conversion of commercial plastics to porous carbon has low yields during pyrolysis and chemical activation. We employed the CuCl<small>₂</small> chemical activator and typical commercial plastics to prepare porous carbon, which achieved high yields exceeding 45%. The release of hydrocarbons during the pyrolysis of commercial plastics is inhibited by the dehydrogenation effect of the CuCl<small>₂</small> activator, while the carbon-rich structure is stabilized by the aromatization reactions of the decomposition species. The porous carbon materials prepared by CuCl<small>₂</small> activation have rich micropores and mesopores. These porous carbons exhibit excellent supercapacitor performance in aqueous electrolytes.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"73 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089743","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}

{"title":"Au/MnO2 Featuring Efficient Oxidase-mimic Activity at Neutral pH: Toward Portable Dual-modal Sensor for sulfide detection integrated with smartphone","authors":"Mi Li, Haorong Cheng, Yang Song, Xinxin Shi, Tongxiang Li, Yan Chen, Zhao Li, Lin Tian","doi":"10.1039/d5nr01766a","DOIUrl":"https://doi.org/10.1039/d5nr01766a","url":null,"abstract":"The rapid detection of sulfide compounds including glutathione (GSH) and Na2S2O8 is of great interest because they play an essential role in the process of food processing. Here, we design a colorimetric/smartphone dual-mode sensing platform to detect GSH and Na2S2O8 simultaneously, depending on gold nanoparticle-decorated MnO2 nanosheets (Au/MnO2 NSs). Because of the distinct structure, Au/MnO2 possesses superior catalytic activity similar to native oxidase capable of catalysing the directly oxidation of 3,3’,5,5’-tetramethylbenzidine (TMB) under near-neutral pH conditions. Meanwhile, this catalytic reaction results in an obvious color change or the solution, which senses GSH and Na2S2O8 through redox and diazotization reactions. The designed sensor enables value-assisted and visual determination of GSH and Na2S2O8 with limits of detection of 2.3 nM. Based on the dual-modal sensing system, a smartphone-mediated “all-in-one” sensing platform is designed to realize the real-time and intelligent monitoring of GSH and Na2S2O8. This work provides a new avenue to construct multifunctional sensors to achieve the visualization and portable determination of sulfide compounds.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"38 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089736","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}

{"title":"Acid-Stable Oxygen-evolving Catalysts: Progress in Non-Precious Material Engineering and Scalability Barriers","authors":"Miaoyu Lin, Xue Qing Chen, Peng Fei Liu, Yu Hou","doi":"10.1039/d5nr03118d","DOIUrl":"https://doi.org/10.1039/d5nr03118d","url":null,"abstract":"As the cornerstone of proton exchange membrane water electrolyzers (PEMWE) systems, oxygen-evolving electrocatalysts play a decisive role in governing both energy conversion efficiency and cost-effectiveness. In recent years, non-precious metal-based oxygen-evolving catalysts have garnered significant attention as promising alternatives to noble metal counterparts. This review comprehensively explores the fundamental principles of acidic oxygen evolution reaction (OER) catalysis mediated by non-precious metal systems, with particular emphasis on the dynamic interplay between their activity and stability. Furthermore, it systematically analyzes degradation mechanisms within key components of PEMWE and outlines corresponding mitigation strategies. Specific advancements in diverse categories of non-precious metal catalysts and their associated design strategies are elaborated in detail. Finally, an in-depth discussion addresses the remaining barriers hindering the industrialization of non-precious metal catalysts. By integrating fundamental insights with practical engineering considerations, this work aims to guide the development of cost-effective yet robust catalysts for next-generation green hydrogen technologies.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"54 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145089735","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}

{"title":"Shape Effects on the 2D Self-Assembly of Lithographically Fabricated Nanoparticles","authors":"Yi-Yu Cai, Zeyu Gu, Shengsong Yang, Christopher B Murray, Cherie Kagan","doi":"10.1039/d5nr03413b","DOIUrl":"https://doi.org/10.1039/d5nr03413b","url":null,"abstract":"We fabricate and polymer ligate square, pentagonal, and hexagonal nanoplates and investigate the effect of nanoparticle (NP) shape on the self-organization of their dispersions at the liquid-air interface into two-dimensional assemblies. Hexagonal NPs assemble into interlocking hexagonal lattices, exhibiting the highest translational order with a characteristic correlation length (ξ0.5) extending over nine NP building blocks. Square NP assemblies are disordered, characterized by ξ0.5 averaging around three NP units, consistent with the propensity of NPs to slide and form coexisting Λ1 and Λ0 lattices. Pentagonal NP assemblies show six-fold coordination, but do not fully tessellate the plane, yielding anisotropic assemblies with intermediate order and ξ0.5 of about seven NP units. In binary NP assemblies, mixed pentagonal and hexagonal NP assemblies with shared six-fold coordination show greater ordering in comparison to assemblies of square and hexagonal NPs.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"53 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145084449","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}