Nanomaterials最新文献_第9页

Optical Properties and Applications of Diffraction Grating Using Localized Surface Plasmon Resonance with Metal Nano-Hemispheres. 利用局部表面等离子体共振与金属纳米半球的衍射光栅光学特性与应用。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-05 DOI: 10.3390/nano14191605

Tomoya Kubota, Shogo Tokimori, Kai Funato, Hiroaki Kawata, Tetsuya Matsuyama, Kenji Wada, Koichi Okamoto

{"title":"Optical Properties and Applications of Diffraction Grating Using Localized Surface Plasmon Resonance with Metal Nano-Hemispheres.","authors":"Tomoya Kubota, Shogo Tokimori, Kai Funato, Hiroaki Kawata, Tetsuya Matsuyama, Kenji Wada, Koichi Okamoto","doi":"10.3390/nano14191605","DOIUrl":"https://doi.org/10.3390/nano14191605","url":null,"abstract":"This study investigates the optical properties of diffraction gratings using localized surface plasmon resonance (LSPR) with metal nano-hemispheres. We fabricated metal nano-hemisphere gratings (MNHGS) with Ga, Ag, and Au and examined their wavelength-selective diffraction properties. Our findings show that these gratings exhibit peak diffraction efficiencies at 300 nm, 500 nm, and 570 nm, respectively, corresponding to the LSPR wavelengths of each metal. The MNHGs were created through thermal nanoimprint and metal deposition, followed by annealing. The experimental and simulation results confirmed that the MNHGs selectively diffract light at their resonance wavelengths. Applying these findings to third-order nonlinear laser spectroscopy (MPT-TG method) enhances measurement sensitivity by reducing background noise through the selective diffraction of pump light while transmitting probe light. This innovation promises a highly sensitive method for observing subtle optical phenomena, enhancing the capabilities of nonlinear laser spectroscopy.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11478325/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470401","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

Biosynthesis and Characterization of Iron Oxide Nanoparticles Using Chenopodium quinoa Extract. 利用藜麦提取物进行氧化铁纳米粒子的生物合成与表征

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-05 DOI: 10.3390/nano14191607

Mercedes Del Pilar Marcos-Carrillo, Noemi-Raquel Checca-Huaman, Edson C Passamani, Juan A Ramos-Guivar

{"title":"Biosynthesis and Characterization of Iron Oxide Nanoparticles Using Chenopodium quinoa Extract.","authors":"Mercedes Del Pilar Marcos-Carrillo, Noemi-Raquel Checca-Huaman, Edson C Passamani, Juan A Ramos-Guivar","doi":"10.3390/nano14191607","DOIUrl":"https://doi.org/10.3390/nano14191607","url":null,"abstract":"In this study, we achieved the biosynthesis of novel 7-8 nm iron-oxide nanoparticles in the presence of different concentrations (5 to 50% w/v) of commercial white quinoa extract. Initially, quinoa extract was prepared at various concentrations by a purification route. The biosynthesis optimization was systematically monitored by X-ray diffraction, and the Rietveld quantitative analysis showed the presence of goethite (5 to 10 wt.%) and maghemite phases. The first phase disappeared upon increasing the organic loading (40 and 50% w/v). The organic loading was corroborated by thermogravimetric measurements, and it increased with quinoa extract concentration. Its use reduces the amount of precipitation agent at high quinoa extract concentrations with the formation of magnetic nanoparticles with hard ferrimagnetic character (42 and 11 emu g-1). The enrichment of hydroxyl groups and the negative zeta potential above pH = 7 were corroborated by a reduction in the point of zero charge in all the samples. For alkaline values, the zeta potential values were above the stability range, indicating highly stable chemical species. The evidence of hydroxyl and amide functionalization was qualitatively observed using infrared analysis, which showed that the carboxyl (quercetin/kaempferol), amide I, and amide III chemical groups are retained after biosynthesis. The resultant biosynthesized samples can find applications in environmental remediation due to the affinity of the chemical agents present on the particle surfaces and easy-to-handle them magnetically.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11478423/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470388","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

Sodium-Ion Battery at Low Temperature: Challenges and Strategies. 低温钠离子电池：挑战与策略。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-04 DOI: 10.3390/nano14191604

Yan Zhao, Zhen Zhang, Yalong Zheng, Yichao Luo, Xinyu Jiang, Yaru Wang, Zhoulu Wang, Yutong Wu, Yi Zhang, Xiang Liu, Baizeng Fang

{"title":"Sodium-Ion Battery at Low Temperature: Challenges and Strategies.","authors":"Yan Zhao, Zhen Zhang, Yalong Zheng, Yichao Luo, Xinyu Jiang, Yaru Wang, Zhoulu Wang, Yutong Wu, Yi Zhang, Xiang Liu, Baizeng Fang","doi":"10.3390/nano14191604","DOIUrl":"https://doi.org/10.3390/nano14191604","url":null,"abstract":"Sodium-ion batteries (SIBs) have garnered significant interest due to their potential as viable alternatives to conventional lithium-ion batteries (LIBs), particularly in environments where low-temperature (LT) performance is crucial. This paper provides a comprehensive review of current research on LT SIBs, focusing on electrode materials, electrolytes, and operational challenges specific to sub-zero conditions. Recent advancements in electrode materials, such as carbon-based materials and titanium-based materials, are discussed for their ability to enhance ion diffusion kinetics and overall battery performance at colder temperatures. The critical role of electrolyte formulation in maintaining battery efficiency and stability under extreme cold is highlighted, alongside strategies to mitigate capacity loss and cycle degradation. Future research directions underscore the need for further improvements in energy density and durability and scalable manufacturing processes to facilitate commercial adoption. Overall, LT SIBs represent a promising frontier in energy storage technology, with ongoing efforts aimed at overcoming technical barriers to enable widespread deployment in cold-climate applications and beyond.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11478248/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470421","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

Analysis and Optimization of Light Absorption and Scattering Properties of Metal Nanocages. 分析和优化金属纳米笼的光吸收和散射特性。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-04 DOI: 10.3390/nano14191603

Enhao Shao, Paerhatijiang Tuersun, Dilishati Wumaier, Shuyuan Li, Aibibula Abudula

{"title":"Analysis and Optimization of Light Absorption and Scattering Properties of Metal Nanocages.","authors":"Enhao Shao, Paerhatijiang Tuersun, Dilishati Wumaier, Shuyuan Li, Aibibula Abudula","doi":"10.3390/nano14191603","DOIUrl":"https://doi.org/10.3390/nano14191603","url":null,"abstract":"Metal nanocages exhibit localized surface plasmon resonance that strongly absorbs and scatters light at specific wavelengths, making them potentially valuable for photothermal therapy and biological imaging applications. However, investigations on metal nanocages are still confined to high-cost and small-scale synthesis. The comprehensive analysis of optical properties and optimal size parameters of metal nanocages is rarely reported. This paper simulates the effects of materials (Ag, Au, and Cu), size parameters, refractive index of the surrounding medium, and orientation on the light absorption and scattering characteristics of the nanocages using the finite-element method and the size-dependent refractive-index model for metal nanoparticles. The results show that the Ag nanocages have excellent light absorption and scattering characteristics and respond significantly to the size parameters, while the refractive index and orientation of the surrounding medium have less effect on them. The Au nanocages also possess superior light absorption properties at specific incident wavelengths. This study also identified the optimized sizes of three metal nanocages at incident light wavelengths commonly used in biomedicine; it was also found that, under deep therapy conditions, Ag nanocages in particular exhibit the highest volume absorption and scattering coefficients of 0.708 nm-1 and 0.583 nm-1, respectively. These findings offer theoretical insights into preparing target nanocage particles for applications in photothermal therapy and biological imaging.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11478681/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470386","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

Structural and Optical Properties of Nickel-Doped Zinc Sulfide. 掺镍硫化锌的结构和光学特性。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-03 DOI: 10.3390/nano14191599

Sultan Alhassan, Alhulw H Alshammari, Satam Alotibi, Khulaif Alshammari, W S Mohamed, N M A Hadia

{"title":"Structural and Optical Properties of Nickel-Doped Zinc Sulfide.","authors":"Sultan Alhassan, Alhulw H Alshammari, Satam Alotibi, Khulaif Alshammari, W S Mohamed, N M A Hadia","doi":"10.3390/nano14191599","DOIUrl":"https://doi.org/10.3390/nano14191599","url":null,"abstract":"In this study, undoped and Ni-doped ZnS nanoparticles were fabricated using a hydrothermal method to explore their structural, optical, and surface properties. X-ray diffraction (XRD) analysis confirmed the cubic crystal structure of ZnS, with the successful incorporation of Ni ions at various doping levels (2%, 4%, 6%, and 8%) without disrupting the overall lattice configuration. The average particle size for undoped ZnS was found to be 5.27 nm, while the Ni-doped samples exhibited sizes ranging from 5.45 nm to 5.83 nm, with the largest size observed at 6% Ni doping before a reduction at higher concentrations. Fourier-transform infrared (FTIR) spectroscopy identified characteristic Zn-S vibrational bands, with shifts indicating successful Ni incorporation into the ZnS lattice. UV-visible spectroscopy revealed a decrease in the optical band gap from 3.72 eV for undoped ZnS to 3.54 eV for 6% Ni-doped ZnS, demonstrating tunable optical properties due to Ni doping, which could enhance photocatalytic performance under visible light. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) analyses confirmed the uniform distribution of Ni within the ZnS matrix, while X-ray photoelectron spectroscopy (XPS) provided further confirmation of the chemical states of the elements. Ni doping of ZnS nanoparticles alters the surface area and pore structure, optimizing the material's textural properties for enhanced performance. These findings suggest that Ni-doped ZnS nanoparticles offer promising potential for applications in photocatalysis, optoelectronics, and other fields requiring specific band gap tuning and particle size control.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11477968/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470425","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 Porous Nanomaterials: Synthesis, Properties, and Applications. 先进多孔纳米材料：合成、特性和应用》。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-03 DOI: 10.3390/nano14191602

Yannick Guari

引用次数: 0

Controlled Fabrication of Wafer-Scale, Flexible Ag-TiO₂ Nanoparticle-Film Hybrid Surface-Enhanced Raman Scattering Substrates for Sub-Micrometer Plastics Detection. 用于亚微米级塑料检测的晶圆级柔性 Ag-TiO2 纳米粒子-薄膜混合表面增强拉曼散射基板的可控制造。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-03 DOI: 10.3390/nano14191597

Fanyi Kong, Chenhua Ji, Gaolei Zhao, Lei Zhang, Zheng Hao, Hu Wang, Jianxun Dai, Huolin Huang, Lujun Pan, Dawei Li

{"title":"Controlled Fabrication of Wafer-Scale, Flexible Ag-TiO2 Nanoparticle-Film Hybrid Surface-Enhanced Raman Scattering Substrates for Sub-Micrometer Plastics Detection.","authors":"Fanyi Kong, Chenhua Ji, Gaolei Zhao, Lei Zhang, Zheng Hao, Hu Wang, Jianxun Dai, Huolin Huang, Lujun Pan, Dawei Li","doi":"10.3390/nano14191597","DOIUrl":"https://doi.org/10.3390/nano14191597","url":null,"abstract":"As an important trace molecular detection technique, surface-enhanced Raman scattering (SERS) has been extensively investigated, while the realization of simple, low-cost, and controllable fabrication of wafer-scale, flexible SERS-active substrates remains challenging. Here, we report a facile, low-cost strategy for fabricating wafer-scale SERS substrates based on Ag-TiO2 nanoparticle-film hybrids by combining dip-coating and UV light array photo-deposition. The results show that a centimeter-scale Ag nanoparticle (AgNP) film (~20 cm × 20 cm) could be uniformly photo-deposited on both non-flexible and flexible TiO2 substrates, with a relative standard deviation in particle size of only 5.63%. The large-scale AgNP/TiO2 hybrids working as SERS substrates show high sensitivity and good uniformity at both the micron and wafer levels, as evidenced by scanning electron microscopy and Raman measurements. In situ bending and tensile experiments demonstrate that the as-prepared flexible AgNP/TiO2 SERS substrate is mechanically robust, exhibiting stable SERS activity even in a large bending state as well as after more than 200 tensile cycles. Moreover, the flexible AgNP/TiO2 SERS substrates show excellent performance in detecting sub-micrometer-sized plastics (≤1 μm) and low-concentration organic pollutants on complex surfaces. Overall, this study provides a simple path toward wafer-scale, flexible SERS substrate fabrication, which is a big step for practical applications of the SERS technique.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11477886/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470392","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

Cytotoxic Potencies of Zinc Oxide Nanoforms in A549 and J774 Cells. 纳米氧化锌在 A549 和 J774 细胞中的细胞毒性效力

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-03 DOI: 10.3390/nano14191601

Nazila Nazemof, Dalibor Breznan, Yasmine Dirieh, Erica Blais, Linda J Johnston, Azam F Tayabali, James Gomes, Premkumari Kumarathasan

{"title":"Cytotoxic Potencies of Zinc Oxide Nanoforms in A549 and J774 Cells.","authors":"Nazila Nazemof, Dalibor Breznan, Yasmine Dirieh, Erica Blais, Linda J Johnston, Azam F Tayabali, James Gomes, Premkumari Kumarathasan","doi":"10.3390/nano14191601","DOIUrl":"https://doi.org/10.3390/nano14191601","url":null,"abstract":"Zinc oxide nanoparticles (NPs) are used in a wide range of consumer products and in biomedical applications, resulting in an increased production of these materials with potential for exposure, thus causing human health concerns. Although there are many reports on the size-related toxicity of ZnO NPs, the toxicity of different nanoforms of this chemical, toxicity mechanisms, and potency determinants need clarification to support health risk characterization. A set of well-characterized ZnO nanoforms (e.g., uncoated ca. 30, 45, and 53 nm; coated with silicon oil, stearic acid, and (3-aminopropyl) triethoxysilane) were screened for in vitro cytotoxicity in two cell types, human lung epithelial cells (A549), and mouse monocyte/macrophage (J774) cells. ZnO (bulk) and ZnCl2 served as reference particles. Cytotoxicity was examined 24 h post-exposure by measuring CTB (viability), ATP (energy metabolism), and %LDH released (membrane integrity). Cellular oxidative stress (GSH-GSSG) and secreted proteins (targeted multiplex assay) were analyzed. Zinc oxide nanoform type-, dose-, and cell type-specific cytotoxic responses were seen, along with cellular oxidative stress. Cell-secreted protein profiles suggested ZnO NP exposure-related perturbations in signaling pathways relevant to inflammation/cell injury and corresponding biological processes, namely reactive oxygen species generation and apoptosis/necrosis, for some nanoforms, consistent with cellular oxidative stress and ATP status. The size, surface area, agglomeration state and metal contents of these ZnO nanoforms appeared to be physicochemical determinants of particle potencies. These findings warrant further research on high-content \"OMICs\" to validate and resolve toxicity pathways related to exposure to nanoforms to advance health risk-assessment efforts and to inform on safer materials.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11482475/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470393","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

Enhancing the Efficacy of Active Pharmaceutical Ingredients in Medicinal Plants through Nanoformulations: A Promising Field. 通过纳米制剂提高药用植物中活性药物成分的功效：前景广阔的领域。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-03 DOI: 10.3390/nano14191598

Yuhao Chen, Yuying Tang, Yuanbo Li, Yukui Rui, Peng Zhang

{"title":"Enhancing the Efficacy of Active Pharmaceutical Ingredients in Medicinal Plants through Nanoformulations: A Promising Field.","authors":"Yuhao Chen, Yuying Tang, Yuanbo Li, Yukui Rui, Peng Zhang","doi":"10.3390/nano14191598","DOIUrl":"https://doi.org/10.3390/nano14191598","url":null,"abstract":"This article explores the emerging field of nanomedicine as a drug delivery system, aimed at enhancing the therapeutic efficacy of active pharmaceutical ingredients in medicinal plants. The traditional methods of applying medicinal plants present several limitations, such as low bioavailability, poor solubility, challenges in accurately controlling drug dosage, and inadequate targeting. Nanoformulations represent an innovative approach in drug preparation that employs nanotechnology to produce nanoscale particles or carriers, which are designed to overcome these limitations. Nanoformulations offer distinct advantages, significantly enhancing the solubility and bioavailability of drugs, particularly for the poorly soluble components of medicinal plants. These formulations effectively enhance solubility, thereby facilitating better absorption and utilization by the human body, which in turn improves drug efficacy. Furthermore, nanomedicine enables targeted drug delivery, ensuring precise administration to the lesion site and minimizing side effects on healthy tissues. Additionally, nanoformulations can regulate drug release rates, extend the duration of therapeutic action, and enhance the stability of treatment effects. However, nanoformulations present certain limitations and potential risks; their stability and safety require further investigation, particularly regarding the potential toxicity with long-term use. Nevertheless, nanomaterials demonstrate substantial potential in augmenting the efficacy of active pharmaceutical ingredients in medicinal plants, offering novel approaches and methodologies for their development and application.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11478102/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470376","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

Carbon-Based Multifunctional Nanomaterials. 碳基多功能纳米材料。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-03 DOI: 10.3390/nano14191600

Huitao Yu, Wei Feng

引用次数: 0