Nanoscale最新文献_第3页

Stacked Meshes with Super-Wettability via Atmospheric Plasma for Efficient Emulsion Separation

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-19 DOI: 10.1039/d4nr04457f

Zengyi He, Linfeng Yang, Xinpeng Cao, Shan Zhou, Lei Jiang, Haoyu Dai

引用次数: 0

Quantifying the Growth Mechanism of Solid-State Nanopores Under High-Voltage Conditioning

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-19 DOI: 10.1039/d4nr03071k

Thomas St-Denis, Ryan Huang, Xavier Charles Capaldi, Mackenzie Pereira, Ioannidis Duchastel-Vassaramva, Zezhou Liu, Peter H Grütter, Walter Reisner

{"title":"Quantifying the Growth Mechanism of Solid-State Nanopores Under High-Voltage Conditioning","authors":"Thomas St-Denis, Ryan Huang, Xavier Charles Capaldi, Mackenzie Pereira, Ioannidis Duchastel-Vassaramva, Zezhou Liu, Peter H Grütter, Walter Reisner","doi":"10.1039/d4nr03071k","DOIUrl":"https://doi.org/10.1039/d4nr03071k","url":null,"abstract":"Solid-state nanopores exhibit dynamically variable sizes influenced by buffer conditions and applied electric field. While dynamical pore behavior can complicate biomolecular sensing, it also offers opportunities for controlled, in-situ modification of pore size post-fabrication. In order to optimally harness solid-state pore dynamics for controlled growth, there is a need to systematically quantify pore growth dynamics and ideally develop quantitative models to describe pore growth. Using high-voltage pulse conditioning, we investigate the expansion of nanopores and track their growth over time. Our findings reveal that pore growth follows a two-regime model: an initial transient regime characterized by an exponential rise, followed by a steady-state regime with linear growth. The pore growth rate increases with voltage, while the duration of the transition regime decreases with voltage. We propose a simple electrochemical etching model based on hydrolysis and solute removal to quantify time-dynamics of growing pores and rationalize the mechanism of electric-field driven pore growth, with numerical solutions aligning closely with experimental data. These insights enhance the understanding of nanopore conditioning, providing a theoretical framework for controlled pore size modification.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"82 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849650","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

Superparamagnetic nanoparticles as potential drug delivery systems for the treatment of Duchenne Muscular Dystrophy

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-19 DOI: 10.1039/d4nr03407d

Maria Lúcia Schumacher, Tatiane N Britos, Fernando L.A. Fonseca, Fabio Furlan Ferreira, David Feder, Paula Fratini, Giuliana Petri, Paula Silvia Haddad

{"title":"Superparamagnetic nanoparticles as potential drug delivery systems for the treatment of Duchenne Muscular Dystrophy","authors":"Maria Lúcia Schumacher, Tatiane N Britos, Fernando L.A. Fonseca, Fabio Furlan Ferreira, David Feder, Paula Fratini, Giuliana Petri, Paula Silvia Haddad","doi":"10.1039/d4nr03407d","DOIUrl":"https://doi.org/10.1039/d4nr03407d","url":null,"abstract":"This study aims to use superparamagnetic iron oxide nanoparticles (SPIONs), specifically magnetite (Fe3O4), to deliver deflazacort (DFZ) and ibuprofen (IBU) to Duchenne muscular dystrophy-affected (DMD) mouse muscles using an external magnetic field. The SPIONs are synthesized by the co-precipitation method, and their surfaces are functionalized with L-cysteine to anchor the drugs, considering that the cysteine on the surface of the SPIONs in the solid state dimerizes to form the cystine molecule, creating the Fe3O4-(Cys)2-DFZ and Fe3O4-(Cys)2-IBU, systems for in vivo tests. The Fe3O4 nanoparticles (NPs) were characterized by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, powder X-ray diffraction (PXRD), transmission electron microscopy (TEM), dynamic light scattering (DLS), and magnetic measurements. The results show that the SPIONs have an average crystallite size of about 8 nm in the solid state and a hydrodynamic size of about 120 nm, which is suitable for biological applications in aqueous dispersion. The nanoparticles exhibit superparamagnetic behavior at room temperature and spherical-close morphology. In addition, vibrational modes characteristic of the functional groups of the molecules anchored to the surface of the SPIONs are identified. Data from blood tests of mdx mice after seven consecutive days of treatment with nanoparticles confirm the non-toxic nature of the system and show an improvement in DMD, with normal levels of liver and kidney enzymes and a decrease in creatine kinase protein.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"53 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849652","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

Excitation Wavelength Dependent Quantum Yield in Water Soluble CdTe Quantum Dots

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-19 DOI: 10.1039/d4nr04344h

Kush Kaushik, Jiban Mondal, Ritesh Kumar Bag, Shagun Sharma, Farhan Anjum, Chayan Kanti Nandi

{"title":"Excitation Wavelength Dependent Quantum Yield in Water Soluble CdTe Quantum Dots","authors":"Kush Kaushik, Jiban Mondal, Ritesh Kumar Bag, Shagun Sharma, Farhan Anjum, Chayan Kanti Nandi","doi":"10.1039/d4nr04344h","DOIUrl":"https://doi.org/10.1039/d4nr04344h","url":null,"abstract":"The Quantum yield (QY) of the semiconductor quantum dots (QDs) is severely hampered by the inherent fluorescence intermittency. The QY of QDs typically increases with the increase in excitation wavelength. Here, we present a distinctive behavior, where QY is found to decrease with an increase in excitation wavelength in water soluble CdTe QDs (CQDs). Single particle level measurements highlight the increase in permanent single dark particles at longer wavelengths that comprehend the overall QY of the CQDs in bulk solution. Fluorescence correlation spectroscopy further revealed an increase in the number of dark particles at longer wavelengths. As confirmed with D2O/H2O exchange, the presence of H+ ions in the water plays an important role in creating the variable permanently dark states in the CQDs. This observation was further supported by the cell internalization study of the CQDs, where a much brighter image at a shorter wavelength than at a longer wavelength was observed. A study of the excitation wavelength-dependent QY in QDs may reveal new insights into the applicability of QDs in different device fabrication cases.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"23 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849653","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

Interface Engineering of 2D Dielectric Nanosheets for Boosting Energy Storage Performance of Polyvinylidene fluoride-Based Nanocomposites with High Charge-Discharge Efficiency

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-19 DOI: 10.1039/d4nr04802d

Hexing Liu, Jian Wang, Yunfan Wang, Zhong-Hui Shen, Xin Zhang, Bao-Wen Li

{"title":"Interface Engineering of 2D Dielectric Nanosheets for Boosting Energy Storage Performance of Polyvinylidene fluoride-Based Nanocomposites with High Charge-Discharge Efficiency","authors":"Hexing Liu, Jian Wang, Yunfan Wang, Zhong-Hui Shen, Xin Zhang, Bao-Wen Li","doi":"10.1039/d4nr04802d","DOIUrl":"https://doi.org/10.1039/d4nr04802d","url":null,"abstract":"Polyvinylidene fluoride (PVDF) film, with high energy density and excellent mechanical properties, has drawn attention as an energy storage device. However, conduction loss in PVDF under high electric fields hinders improvement in efficiency due to electrode-limited and bulk-limited conduction. Well-aligned multilayer interfaces of two-dimensional (2D) nanocoatings can block charge injection, reducing electrode-limited conduction loss in dielectric polymers. Thus, rational selection of 2D fillers is crucial for designing high-energy-density dielectric materials. This study explores 2D oxide nanosheets with varying dielectric constants and bandgaps, such as Ti0.87O2, Ca2Nb3O10, and montmorillonite (MMT). Ca2Nb3O10 nanosheets, with a higher dielectric constant and similar bandgap to Ti0.87O2, created a higher Schottky barrier (0.6 eV), resulting in a discharge energy density (Ud) of 26.4 J/cm³ at 720 MV/m in PVDF-Ca2Nb3O10 film. The PVDF-MMT film, coated with MMT nanosheets featuring a lower dielectric constant yet a higher bandgap, achieves a similar Ud of 26.8 J/cm³ at 720 MV/m, with efficiencies (η) above 80% for both films. These results indicate that the bandgap and dielectric constant of 2D nanosheets play a crucial role in determining PVDF composites' energy storage density and efficiency, necessitating a balance between these parameters. Furthermore, ultraviolet (UV) irradiation was introduced to induce trap centers and inhibit charge conduction and energy loss in PVDF-based composites under high electric fields. Consequently, the UV-treated PVDF-MMT composite film achieves a Ud of 29.1 J/cm³ and an η of 78.3% at 750 MV/m. This work offers an effective strategy for developing high-energy density, high-efficiency PVDF-based polymer materials.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"7 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849654","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

Mapping the local stoichiometry in Cu nanoparticles during controlled oxidation by STEM-EELS spectral images

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-19 DOI: 10.1039/d4nr04341c

Eleonora Spurio, Giovanni Bertoni, Sergio D'Addato, Francesca Alimonti, Paola Luches

引用次数: 0

Lignosulfonate as a versatile regulator for the mediated synthesis of Ag@AgCl nanocubes

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-18 DOI: 10.1039/d4nr04161e

Lingyu Yin, Jian Yang, Liqin Liu, Bin Lu, Xiaofeng Lyu, Zhengbai Cheng, Hongbin Liu, Xingye An

{"title":"Lignosulfonate as a versatile regulator for the mediated synthesis of Ag@AgCl nanocubes","authors":"Lingyu Yin, Jian Yang, Liqin Liu, Bin Lu, Xiaofeng Lyu, Zhengbai Cheng, Hongbin Liu, Xingye An","doi":"10.1039/d4nr04161e","DOIUrl":"https://doi.org/10.1039/d4nr04161e","url":null,"abstract":"The remarkable catalytic activity, optical properties, and electrochemical behavior of nanomaterials based on noble metals (NM) are profoundly influenced by their physical characteristics, including particle size, morphology, and crystal structure. Effective regulation of these parameters necessitates a refined methodology. Lignin, a natural aromatic compound abundant in hydroxyl, carbonyl, carboxyl, and sulfonic acid groups, emerges as an eco-friendly surfactant, reducing agent, and dispersant, offering the potential to precisely control the particle size and morphology of NM-based nanomaterials. In this study, lignosulfonate (LS) was utilized as a versatile regulator proficient in the capacities of reduction, capping, and dispersal for the synthesis of Ag@AgCl nanocubes. LS concentration and reaction time were identified as crucial factors impacting the ultimate particle size and morphology of Ag@AgCl nanocubes. The Ag@AgCl nanocube, with a particle size of 30±10 nm, was successfully synthesized under the optimized conditions of a 1.0 mM LS concentration and a 1-hour reaction period. As a reducing agent, LS facilitates the conversion of silver ions originating from AgCl to silver nanoparticles, following an etching-like mechanism that yields AgCl seeds with a uniform cubic particle size. The obtained Ag@AgCl nanocubes exhibit stable morphology and excellent dispersion characteristics.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"15 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841731","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

Nanophotonic structures energized short-wave infrared quantum dot photodetectors and their advancements in imaging and large-scale fabrication techniques. 纳米光子结构激发的短波红外量子点光电探测器及其在成像和大规模制造技术方面的进展。

IF 5.8 3区材料科学

Nanoscale Pub Date : 2024-12-18 DOI: 10.1039/d4nr03601h

Dan Wu, Genghao Xu, Jing Tan, Xiao Wang, Yilan Zhang, Lei Ma, Wei Chen, Kai Wang

{"title":"Nanophotonic structures energized short-wave infrared quantum dot photodetectors and their advancements in imaging and large-scale fabrication techniques.","authors":"Dan Wu, Genghao Xu, Jing Tan, Xiao Wang, Yilan Zhang, Lei Ma, Wei Chen, Kai Wang","doi":"10.1039/d4nr03601h","DOIUrl":"https://doi.org/10.1039/d4nr03601h","url":null,"abstract":"Short-wave infrared (SWIR) photodetectors (PDs) have a wide range of applications in the field of information and communication. Especially in recent years, with the increasing demand for consumer electronics, conventional semiconductor-based PDs alone are unable to cope with the ever-increasing market. Colloidal quantum dots (QDs) have attracted great interest due to their low fabrication cost, solution processability, and promising optoelectronic properties. In addition to advancements in synthesis methods and surface ligand engineering, the photoelectronic performance of QD-based SWIR PDs has been greatly improved due to developments in nanophotonic structural engineering, such as microcavities, localized and propagating surface plasmon resonant structures, and gratings for specific and high-performance detection application. The improvement in the performance of photoconductors, photodiodes, and phototransistors also enhances the performance of SWIR imaging sensors where they have been realized and demonstrated promising potential due to the direct integration of QD PDs with CMOS substrates. In addition, flexible manipulation of the QDs has been realized, thanks to their solution-processable capability. Therefore, a variety of large-scale production process methods have been examined including blade coating, flexible microcomb printing, ink-jet printing, spray deposition, etc. which can effectively reduce the cost and promote commercial application in consumer electronics. Finally, the current challenges and future development prospects of QD-based PDs are reviewed and could provide guidance for future design of the QDs PDs.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" ","pages":""},"PeriodicalIF":5.8,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142845350","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

All-vanadium-based lithium–ion full battery with hierarchical yolk–shell structure electrodes

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-18 DOI: 10.1039/d4nr04143g

Jie Zhang, Kongjun Zhu, Zhihan Kong, Dingwei Ji, Jun Guo, Zheng Zhang, Jing Wang, Kang Yan, Jinsong Liu

引用次数: 0

Energetic MOF-derived Fe3C nanoparticles encased in N, S-codoped mesoporous pod‐like carbon nanotubes for efficient oxygen reduction reaction 包裹在 N、S-掺杂介孔荚状碳纳米管中的高能 MOF 源 Fe3C 纳米粒子用于高效氧气还原反应

IF 6.7 3区材料科学

Nanoscale Pub Date : 2024-12-18 DOI: 10.1039/d4nr04004j

Yang Liu, Xinde Duan, Fa-Yuan Ge, Tingting Wu, Hegen Zheng

{"title":"Energetic MOF-derived Fe3C nanoparticles encased in N, S-codoped mesoporous pod‐like carbon nanotubes for efficient oxygen reduction reaction","authors":"Yang Liu, Xinde Duan, Fa-Yuan Ge, Tingting Wu, Hegen Zheng","doi":"10.1039/d4nr04004j","DOIUrl":"https://doi.org/10.1039/d4nr04004j","url":null,"abstract":"Rational design of advanced oxygen reduction reaction (ORR) catalysts is essential to improve the performance of energy conversion devices. However, it remains a grand challenge to construct hierarchically micro/meso/macroporous nanostructures, especially mesoporous transport channels in catalysts, to enhance the catalytic capability. Herein, motivated by the characteristic of energetic metal-organic frameworks (EMOFs) that produce an abundance of gases during high-temperature pyrolysis, we prepared a unique tetrazine-based EMOF-derived electrocatalyst (denoted as Fe3C@NSC-900) consisting of highly dispersed Fe3C nanoparticles and N, S-codoped mesoporous carbon nanotubes. The mesopore-dominated core-shell structure endows Fe3C@NSC-900 with excellent catalytic activity and efficient mass transfer. Thus, the optimal Fe3C@NSC-900 demonstrates a high half-wave potential of 0.922 V, and great stability in 0.1 M KOH, outperforming commercial Pt/C and most of reported ORR catalysts. For all we know, this work is the first application of tetrazine-based EMOF derivative for electrocatalytic ORR, and is expected to offer some constructive insights for potential of EMOF in new-generation catalyst design.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"24 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841734","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