Nanoscale Advances最新文献_第7页

Shape anisotropy induced jamming of nanoparticles at liquid interfaces: a tensiometric study† 形状各向异性诱发纳米粒子在液体界面上的堵塞：张力研究

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2024-07-24 DOI: 10.1039/D4NA00280F

Chandan Kumar, Suman Bhattacharjee and Sunita Srivastava

{"title":"Shape anisotropy induced jamming of nanoparticles at liquid interfaces: a tensiometric study†","authors":"Chandan Kumar, Suman Bhattacharjee and Sunita Srivastava","doi":"10.1039/D4NA00280F","DOIUrl":"10.1039/D4NA00280F","url":null,"abstract":"The intersection of nanotechnology and interfacial science has opened up new avenues for understanding complex phenomena occurring at liquid interfaces. The assembly of nanoparticles at liquid/liquid interfaces provides valuable insights into their interactions with fluid interfaces, essential for various applications, including drug delivery. In this study, we focus on the shape and concentration effects of nanoscale particles on interfacial affinity. Using pendant drop tensiometry, we monitor the real-time interfacial tension between an oil droplet and an aqueous solution containing nanoparticles. We measure two different types of nanoparticles: spherical gold nanoparticles (AuNPs) and anisotropic gold nanorods (AuNRs), each functionalized with surfactants to facilitate interaction at the interface. We observe that the interface equilibrium behaviour is mediated by kinetic processes, namely, diffusion, adsorption and rearrangement of particles. For anisotropic AuNRs, we observe shape-induced jamming of particles at the interface, as evidenced by their slower diffusivity and invariant rearrangement rate. In contrast, the adsorption of spherical AuNPs is dynamic and requires more time to reach equilibrium, indicating weaker interface affinity. By detailed analysis of the interfacial tension data and interaction energy calculations, we show that the anisotropic particle shape achieves stable equilibrium inter-particle separation compared to the isotropic particles. Our findings demonstrate that anisotropic particles are a better design choice for drug delivery applications as they provide better affinity for fluid interface attachment, a crucial requirement for efficient drug transport across cell membranes. Additionally, anisotropic shapes can stabilize interfaces at low particle concentrations compared to isotropic particles, thus minimizing side effects associated with biocompatibility and toxicity.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":null,"pages":null},"PeriodicalIF":4.6,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/na/d4na00280f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781434","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

A review of material design for high performance triboelectric nanogenerators: performance improvement based on charge generation and charge loss 高性能三电纳米发电机材料设计综述：基于电荷生成和电荷损耗的性能改进

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2024-07-24 DOI: 10.1039/D4NA00340C

Xiaochuan Li, Qianxi Yang, Dahu Ren, Qianying Li, Huake Yang, Xuemei Zhang and Yi Xi

{"title":"A review of material design for high performance triboelectric nanogenerators: performance improvement based on charge generation and charge loss","authors":"Xiaochuan Li, Qianxi Yang, Dahu Ren, Qianying Li, Huake Yang, Xuemei Zhang and Yi Xi","doi":"10.1039/D4NA00340C","DOIUrl":"10.1039/D4NA00340C","url":null,"abstract":"As a type of innovative device, triboelectric nanogenerators (TENGs) are capable of converting mechanical energy into electrical energy through the triboelectric effect. Based on the working mechanism, the output performance of TENGs heavily relies on the triboelectric materials used. The modification of triboelectric materials is the most efficient way to improve the output performance of TENGs. Herein, this review focuses on the recent progress in triboelectric material design for high-performance TENGs. First, the basic theory of TENGs is introduced. Second, the relationship between the triboelectric materials and the output performance of TENGs is summarized in detail based on a theoretical model of the triboelectric charge dynamic equilibrium. Furthermore, the relevant strategies are analyzed in detail. Finally, challenges and shortcomings of the triboelectric materials for high-performance TENGs are discussed. This review provides a basis for the research status and future development of triboelectric materials.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":null,"pages":null},"PeriodicalIF":4.6,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/na/d4na00340c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781436","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

First principles study on the structural stability, mechanical stability and optoelectronic properties of alkali-based single halide perovskite compounds XMgI3 (X = Li/Na): DFT insight 关于碱基单一卤化物包晶化合物 XMgI3（X = Li/Na）的结构稳定性、机械稳定性和光电特性的第一性原理研究：DFT 见解

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2024-07-24 DOI: 10.1039/D4NA00305E

Kefyalew Wagari Guji, Tesfaye Abebe Geleta, Nabil Bouri and Victor José Ramirez Rivera

{"title":"First principles study on the structural stability, mechanical stability and optoelectronic properties of alkali-based single halide perovskite compounds XMgI3 (X = Li/Na): DFT insight","authors":"Kefyalew Wagari Guji, Tesfaye Abebe Geleta, Nabil Bouri and Victor José Ramirez Rivera","doi":"10.1039/D4NA00305E","DOIUrl":"10.1039/D4NA00305E","url":null,"abstract":"Metal-halide perovskites are recognized as cutting-edge solar energy technology, boasting remarkable absorption capabilities, minimal environmental impact, and cost-effectiveness. This study delves into the structural stability, mechanical stability, and optoelectronic properties of lead-free halide perovskites, specifically XMgI3 (X = Li/Na), by utilizing the CASTEP and WIEN2k software along with the GGA-PBE and Tran–Blaha modified Becke–Johnson (TB-mBJ) exchange–correlation functions to compare their electronic properties. The structural and mechanical stabilities were confirmed by assessing their tolerance factor and formation energy and by evaluating their elastic constants, respectively. Using the TB-mBJ exchange–correlation potential function, the calculated indirect band gap values for LiMgI3 and NaMgI3 were 2.474 and 2.556 eV, respectively. These band gaps are suitable for solar energy harvesting due to their broad optical absorption ranging from infrared to visible light. The partial density of states and the total density of states were determined to investigate the contribution of individual atoms. Consequently, this study can guide researchers focusing on the experimental synthesis of these materials at the laboratory scale for in-depth exploration, particularly in applications such as photovoltaics and various optoelectronic devices.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":null,"pages":null},"PeriodicalIF":4.6,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/na/d4na00305e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141785780","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

Scalable and Adaptable Two-Ligand Co-Solvent Transfer Methodology for Gold Bipyramids to Organic Solvents 金双锥体向有机溶剂的可扩展、可调整的双配体共溶剂转移方法

IF 4.7 3区材料科学

Nanoscale Advances Pub Date : 2024-07-23 DOI: 10.1039/d4na00527a

Caitlin Coplan, Nicolas Watkins, Richard D Schaller, Xiao-Min Lin

{"title":"Scalable and Adaptable Two-Ligand Co-Solvent Transfer Methodology for Gold Bipyramids to Organic Solvents","authors":"Caitlin Coplan, Nicolas Watkins, Richard D Schaller, Xiao-Min Lin","doi":"10.1039/d4na00527a","DOIUrl":"https://doi.org/10.1039/d4na00527a","url":null,"abstract":"Large and faceted nanoparticles, such as gold bipyramids, presently require synthesis using alkyl ammonium halide ligands in aqueous conditions to stabilize the structure, which impedes subsequent transfer and suspension of such nanoparticles in low polarity solvents despite success with few nanometer gold nanoparticles of shapes such as spheres. Phase transfer methodologies present a feasible avenue to maintain colloidal stability of suspensions and move high surface energy particles into organic solvent environments. Here, we present a method to yield stable suspensions of gold bipyramids in low-polarity solvents, including methanol, dimethylformamide, chloroform, and toluene, through the requisite combination of two capping agents and the presence of a co-solvent. By utilizing PEG-SH functionalization for stability, dodecanethiol (DDT) as the organic-soluble capping agent, and methanol to aid in the phase transfer, gold bipyramids with a wide-range of aspect ratios and sizes can be transferred between water and chloroform readily and maintain colloidal stability. Subsequent transfer to various organic and low-polarity solvents is then demonstrated for the first time.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141753878","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

Improving MPI and hyperthermia performance of superparamagnetic iron oxide nanoparticles through fractional factorial design of experiments† 通过分数因子实验设计提高超顺磁性氧化铁纳米粒子的 MPI 和热疗性能

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2024-07-23 DOI: 10.1039/D4NA00378K

Yanchen Li, Rui Zhang, Roman Barmin, Elena Rama, Max Schoenen, Franziska Schrank, Volkmar Schulz, Ioana Slabu, Fabian Kiessling, Twan Lammers and Roger M. Pallares

{"title":"Improving MPI and hyperthermia performance of superparamagnetic iron oxide nanoparticles through fractional factorial design of experiments†","authors":"Yanchen Li, Rui Zhang, Roman Barmin, Elena Rama, Max Schoenen, Franziska Schrank, Volkmar Schulz, Ioana Slabu, Fabian Kiessling, Twan Lammers and Roger M. Pallares","doi":"10.1039/D4NA00378K","DOIUrl":"10.1039/D4NA00378K","url":null,"abstract":"Superparamagnetic iron oxide nanoparticles (SPIONs) are widely used for biomedical applications, including magnetic particle imaging (MPI) and magnetic hyperthermia. The co-precipitation method is one of the most common synthetic routes to obtain SPIONs, since it is simple and does not require extreme conditions, such as high temperatures. Despite its prevalence, however, the co-precipitation synthesis presents some challenges, most notably the high batch-to-batch variability, as multiple factors can influence nanoparticle growth. In this study, we utilized a fractional factorial design of experiments to identify key factors influencing SPION growth, properties, and performance in MPI and magnetic hyperthermia, namely Fe3+ content, pH, temperature, stirring, and atmosphere. Notably, our study unveiled secondary interactions, particularly between temperature and Fe3+ content, as well as pH and Fe3+ content, for which simultaneous changes of both parameters promoted greater effects than the sum of each factor effect alone, emphasizing the impact of synergistic effects on SPION growth and performance. These findings provide a deeper understanding of the growth mechanism of SPIONs, reconcile discrepancies in the existing literature, and underscore the importance of characterizing secondary interactions to improve the performance of SPIONs for biomedical applications.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":null,"pages":null},"PeriodicalIF":4.6,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/na/d4na00378k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141781437","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

Impact of morphology and oxygen vacancy content in Ni, Fe co-doped ceria for efficient electrocatalyst based water splitting† 掺杂镍和铁的铈中形态和氧空位含量对高效电催化剂水分离的影响

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2024-07-23 DOI: 10.1039/D4NA00500G

Abhaya Kumar Mishra, Joshua Willoughby, Shanna L. Estes, Keliann Cleary Kohler and Kyle S. Brinkman

{"title":"Impact of morphology and oxygen vacancy content in Ni, Fe co-doped ceria for efficient electrocatalyst based water splitting†","authors":"Abhaya Kumar Mishra, Joshua Willoughby, Shanna L. Estes, Keliann Cleary Kohler and Kyle S. Brinkman","doi":"10.1039/D4NA00500G","DOIUrl":"10.1039/D4NA00500G","url":null,"abstract":"Designing a highly efficient, low-cost, sustainable electrocatalyst for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) through water splitting is a current challenge for renewable energy technologies. This work presents a modified sol–gel route to prepare metal-ion(s) doped cerium oxide nanostructures as an efficient electrocatalyst for overall water splitting. Nickle (Ni) and iron (Fe) co-doping impacts the morphology in cerium oxide resulting in 5 nm nanoparticles with a mesoporous-like microstructure. The high level 20 mol% (1 : 1 ratio) of Ni + Fe bimetal-ion(s) doped CeO2 shows excellent HER and OER activities compared to the monodoped Fe/Ni and pristine CeO2. The co-doped catalysts required a low overpotential of 104 mV and 380 mV for HER and OER, respectively, in 1 M KOH, at a current density of 10 mA cm−2. The Tafel slopes of 95 mV dec−1 and 65 mV dec−1 were measured for HER and OER with the same representative samples which demonstrated excellent stability even after continuous operation for 20 hours in the alkaline medium. The unique morphology, enhanced oxygen vacancy (Ov) content and the synergistic effects of dopants in CeO2 play essential roles in enhancing the activities of Ni + Fe doped samples.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":null,"pages":null},"PeriodicalIF":4.6,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/na/d4na00500g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141753876","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

Advanced lightweight lightning strike protection composites based on super-aligned carbon nanotube films and thermal-resistant zirconia fibers 基于超对齐碳纳米管薄膜和耐热氧化锆纤维的先进轻质雷击防护复合材料

IF 4.7 3区材料科学

Nanoscale Advances Pub Date : 2024-07-23 DOI: 10.1039/d4na00392f

Mingquan Zhu, Peng Zhang, Feng Gao, Yunxiang Bai, Hui Zhang, Min Zu, Luqi Liu, Zhong Zhang

引用次数: 0

Soft colloidal monolayer with reflection symmetry through confined drying 通过约束干燥实现具有反射对称性的软胶体单层

IF 4.7 3区材料科学

Nanoscale Advances Pub Date : 2024-07-23 DOI: 10.1039/d4na00542b

Sanjib Majumder, Madivala G. Basavaraj, Dillip Kumar Satapathy

{"title":"Soft colloidal monolayer with reflection symmetry through confined drying","authors":"Sanjib Majumder, Madivala G. Basavaraj, Dillip Kumar Satapathy","doi":"10.1039/d4na00542b","DOIUrl":"https://doi.org/10.1039/d4na00542b","url":null,"abstract":"Colloidal monolayers serve as fundamental building blocks in fabricating diverse functional materials, pivotal for surface modifications and chemical reactivity and controlled assembly of nanoparticle. In this article, we report the formation of colloidal monolayers generated by drying an aqueous droplet containing soft colloids confined between two hydrophilic parallel plates. The analysis of the kinetics of evaporation in this confined mode showed that (i) For a significant portion of the drying time, the drops adopt a catenoid configuration; (ii) At the penultimate stage of drying, the catenoid structure undergoes division into two daughter sessile drops; (iii) the three-phase contact line remains pinned at a specific location while it continuously slips at all other locations. The interplay between interface-assisted particle deposition onto the solid substrate and the time evolution of particle concentration within the droplet during evaporation results in unique microstructural features within the deposited patterns. Notably, these deposit patterns exhibit a reflection symmetry. The microstructural features of the dried deposits are further quantified by calculating the particle number density, inter-particle separation, areal disorder parameter, and the bond orientational order parameter. The variation of these parameters for deposits formed under different conditions, such as by altering the spacing between parallel plates and adjusting the concentration of microgel particles in the droplet, is discussed.","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":null,"pages":null},"PeriodicalIF":4.7,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141753877","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

Fe3O4/PANI/CuI as sustainable heterogenous nanocatalyst for A3 coupling. Fe3O4/PANI/CuI 作为用于 A3 偶联的可持续异质纳米催化剂。

IF 4.7 3区材料科学

Nanoscale Advances Pub Date : 2024-07-22 DOI: 10.1039/d4na00448e

Nisha Kharb, Sahil Kohli, Snigdha Singh, Neera Sharma, Ramesh Chandra

引用次数: 0

Correction: Beyond Newton's law of cooling in evaluating magnetic hyperthermia performance: a device-independent procedure 更正：超越牛顿冷却定律评估磁热效应：与设备无关的程序

IF 4.6 3区材料科学

Nanoscale Advances Pub Date : 2024-07-22 DOI: 10.1039/D4NA90079K

Sergiu Ruta, Yilian Fernández-Afonso, Samuel E. Rannala, M. Puerto Morales, Sabino Veintemillas-Verdaguer, Carlton Jones, Lucía Gutiérrez, Roy W. Chantrell and David Serantes

引用次数: 0