Nanomaterials最新文献_第4页

The Development of Nanomaterials in Adsorption, Separation and Purification. 纳米材料在吸附、分离和净化领域的发展。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-16 DOI: 10.3390/nano14201660

Daniela Cristina Culita

引用次数: 0

Functional Nanomaterials for Sensing Devices: Synthesis, Characterization and Applications. 用于传感设备的功能纳米材料：合成、表征和应用》。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-15 DOI: 10.3390/nano14201652

Barbara Vercelli

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The Development of a Flexible Humidity Sensor Using MWCNT/PVA Thin Films. 使用 MWCNT/PVA 薄膜开发柔性湿度传感器。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-15 DOI: 10.3390/nano14201653

Ana R Santos, Júlio C Viana

{"title":"The Development of a Flexible Humidity Sensor Using MWCNT/PVA Thin Films.","authors":"Ana R Santos, Júlio C Viana","doi":"10.3390/nano14201653","DOIUrl":"https://doi.org/10.3390/nano14201653","url":null,"abstract":"The exponential demand for real-time monitoring applications has altered the course of sensor development, from sensor electronics miniaturization, e.g., resorting to printing techniques, to low-cost, flexible and functional wearable materials. Humidity sensing has been used in the prevention and diagnosis of medical conditions, as well as in the assessment of physical comfort. This paper presents a resistive flexible humidity sensor composed of silver interdigitated electrodes (IDTs) screen printed onto polyimide film and an active layer of multiwall carbon nanotubes (MWCNT) dispersed in a water-soluble polymer, polyvinyl alcohol (PVA). Different MWCNT/PVA sensor sizes and MWCNT percentages are tested to study their effect on the initial electrical resistance (Ri) values and sensor response at different humidity percentages. The results show that the Ri values decrease with the increase in % MWCNT. The sensor size did not influence the sensor response, while the % MWCNT affected the sensor behavior upon relative humidity (RH) increments. The 1% MWCNT/PVA sensor showed the best response, reaching a relative electrical resistance, ΔR/R0, of 509% at 99% RH. Comparable with other reported sensors, the produced MWCNT/PVA flexible sensor is simpler, greener and shows a good sensitivity to humidity, being easily incorporated in wearable monitoring applications, from sports to medical fields.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510487/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504522","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

Development and Biomedical Application of Non-Noble Metal Nanomaterials in SERS. 非贵金属纳米材料在 SERS 中的开发和生物医学应用。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-15 DOI: 10.3390/nano14201654

Liping Chen, Hao Liu, Jiacheng Gao, Jiaxuan Wang, Zhihan Jin, Ming Lv, Shancheng Yan

{"title":"Development and Biomedical Application of Non-Noble Metal Nanomaterials in SERS.","authors":"Liping Chen, Hao Liu, Jiacheng Gao, Jiaxuan Wang, Zhihan Jin, Ming Lv, Shancheng Yan","doi":"10.3390/nano14201654","DOIUrl":"https://doi.org/10.3390/nano14201654","url":null,"abstract":"Surface-enhanced Raman scattering (SERS) is vital in many fields because of its high sensitivity, fast response, and fingerprint effect. The surface-enhanced Raman mechanisms are generally electromagnetic enhancement (EM), which is mainly based on noble metals (Au, Ag, etc.), and chemical enhancement (CM). With more and more studies on CM mechanism in recent years, non-noble metal nanomaterial SERS substrates gradually became widely researched and applied due to their superior economy, stability, selectivity, and biocompatibility compared to noble metal. In addition, non-noble metal substrates also provide an ideal new platform for SERS technology to probe the mechanism of biomolecules. In this paper, we review the applications of non-noble metal nanomaterials in SERS detection for biomedical engineering in recent years. Firstly, we introduce the development of some more common non-noble metal SERS substrates and discuss their properties and enhancement mechanisms. Subsequently, we focus on the progress of the application of SERS detection of non-noble metal nanomaterials, such as analysis of biomarkers and the detection of some contaminants. Finally, we look forward to the future research process of non-noble metal substrate nanomaterials for biomedicine, which may draw more attention to the biosensor applications of non-noble metal nanomaterial-based SERS substrates.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510763/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504475","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

Gold Nanoparticle-Embedded Thiol-Functionalized Ti₃C₂T_x MXene for Sensitive Electrochemical Sensing of Ciprofloxacin. 嵌入金纳米粒子的硫醇官能化 Ti3C2Tx MXene 用于环丙沙星的灵敏电化学传感。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-15 DOI: 10.3390/nano14201655

Mari Elancheziyan, Manisha Singh, Keehoon Won

{"title":"Gold Nanoparticle-Embedded Thiol-Functionalized Ti3C2Tx MXene for Sensitive Electrochemical Sensing of Ciprofloxacin.","authors":"Mari Elancheziyan, Manisha Singh, Keehoon Won","doi":"10.3390/nano14201655","DOIUrl":"https://doi.org/10.3390/nano14201655","url":null,"abstract":"The unregulated use of ciprofloxacin (CIPF) has led to increased resistance in patients and has threatened human health with issues such as digestive disorders, kidney disorders, and liver complications. In order to overcome these concerns, this work introduces a portable electrochemical sensor based on a disposable integrated screen-printed carbon electrode (SPCE) coated with gold nanoparticle-embedded thiol-functionalized Ti3C2Tx MXene (AuNPs-S-Ti3C2Tx MXene) for simple, rapid, precise, and sensitive quantification of CIPF in milk and water samples. The high surface area and electrical conductivity of AuNPs are maximized thanks to the strong interaction between AuNPs and SH-Ti3C2Tx MXene, which can prevent the aggregation of AuNPs and endow larger electroactive areas. Ti3C2Tx MXene was synthesized from Ti3AlC2 MAX phases, and its thiol functionalization was achieved using 3-mercaptopropyl trimethoxysilane. The prepared AuNPs-S-Ti3C2Tx MXene nanocomposite was characterized using FESEM, EDS, XRD, XPS, FTIR, and UV-visible spectroscopy. The electrochemical behavior of the nanocomposite was examined using CV, EIS, DPV, and LSV. The AuNPs-S-Ti3C2Tx MXene/SPCE showed higher electrochemical performances towards CIPF oxidation than a conventional AuNPs-Ti3C2Tx MXene/SPCE. Under the optimized DPV and LSV conditions, the developed nonenzymatic CIPF sensor displayed a wide range of detection concentrations from 0.50 to 143 μM (DPV) and from 0.99 to 206 μM (LSV) with low detection limits of 0.124 μM (DPV) and 0.171 μM (LSV), and high sensitivities of 0.0863 μA/μM (DPV) and 0.2182 μA/μM (LSV).","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510598/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504489","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

Introduction and Development of Surface-Enhanced Raman Scattering (SERS) Substrates: A Review. 表面增强拉曼散射 (SERS) 基质的介绍和发展：综述。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-14 DOI: 10.3390/nano14201648

Jianping Peng, Yutao Song, Yue Lin, Zhenkai Huang

{"title":"Introduction and Development of Surface-Enhanced Raman Scattering (SERS) Substrates: A Review.","authors":"Jianping Peng, Yutao Song, Yue Lin, Zhenkai Huang","doi":"10.3390/nano14201648","DOIUrl":"https://doi.org/10.3390/nano14201648","url":null,"abstract":"Since its discovery, the phenomenon of Surface Enhanced Raman Scattering (SERS) has gradually become an important tool for analyzing the composition and structure of substances. As a trace technique that can efficiently and nondestructively detect single molecules, the application of SERS has expanded from environmental and materials science to biomedical fields. In the past decade or so, the explosive development of nanotechnology and nanomaterials has further boosted the research of SERS technology, as nanomaterial-based SERS substrates have shown good signal enhancement properties. So far, it is widely recognized that the morphology, size, composition, and stacking mode of nanomaterials have a very great influence on the strength of the substrate SERS effect. Herein, an overview of methods for the preparation of surface-enhanced Raman scattering (SERS) substrates is provided. Specifically, this review describes a variety of common SERS substrate preparation methods and explores the potential and promise of these methods for applications in chemical analysis and biomedical fields. By detailing the influence of different nanomaterials (e.g., metallic nanoparticles, nanowires, and nanostars) and their structural features on the SERS effect, this article aims to provide a comprehensive understanding of SERS substrate preparation techniques.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510290/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504494","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

Design and Simulation for Minimizing Non-Radiative Recombination Losses in CsGeI₂Br Perovskite Solar Cells. 最大限度减少碲化镉镓铱硼过氧化物太阳能电池中的非辐射重组损耗的设计与模拟。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-14 DOI: 10.3390/nano14201650

Tingxue Zhou, Xin Huang, Diao Zhang, Wei Liu, Xing'ao Li

{"title":"Design and Simulation for Minimizing Non-Radiative Recombination Losses in CsGeI2Br Perovskite Solar Cells.","authors":"Tingxue Zhou, Xin Huang, Diao Zhang, Wei Liu, Xing'ao Li","doi":"10.3390/nano14201650","DOIUrl":"https://doi.org/10.3390/nano14201650","url":null,"abstract":"CsGeI2Br-based perovskites, with their favorable band gap and high absorption coefficient, are promising candidates for the development of efficient lead-free perovskite solar cells (PSCs). However, bulk and interfacial carrier non-radiative recombination losses hinder the further improvement of power conversion efficiency and stability in PSCs. To overcome this challenge, the photovoltaic potential of the device is unlocked by optimizing the optical and electronic parameters through rigorous numerical simulation, which include tuning perovskite thickness, bulk defect density, and series and shunt resistance. Additionally, to make the simulation data as realistic as possible, recombination processes, such as Auger recombination, must be considered. In this simulation, when the Auger capture coefficient is increased to 10-29 cm6 s-1, the efficiency drops from 31.62% (without taking Auger recombination into account) to 29.10%. Since Auger recombination is unavoidable in experiments, carrier losses due to Auger recombination should be included in the analysis of the efficiency limit to avoid significantly overestimating the simulated device performance. Therefore, this paper provides valuable insights for designing realistic and efficient lead-free PSCs.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510213/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504474","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

Performance Enhancement of Hole Transport Layer-Free Carbon-Based CsPbIBr₂ Solar Cells through the Application of Perovskite Quantum Dots. 通过应用过氧化物量子点提高无空穴传输层碳基 CsPbIBr2 太阳能电池的性能。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-14 DOI: 10.3390/nano14201651

Qi Yu, Wentian Sun, Shu Tang

{"title":"Performance Enhancement of Hole Transport Layer-Free Carbon-Based CsPbIBr2 Solar Cells through the Application of Perovskite Quantum Dots.","authors":"Qi Yu, Wentian Sun, Shu Tang","doi":"10.3390/nano14201651","DOIUrl":"https://doi.org/10.3390/nano14201651","url":null,"abstract":"CsPbIBr2, with its suitable bandgap, shows great potential as the top cell in tandem solar cells. Nonetheless, its further development is hindered by a high defect density, severe carrier recombination, and poor stability. In this study, CsPbI1.5Br1.5 quantum dots were utilized as an additive in the ethyl acetate anti-solvent, while a layer of CsPbBr3 QDs was introduced between the ETL and the CsPbIBr2 light-harvester film. The combined effect of these two QDs enhanced the nucleation, crystallization, and growth of CsPbIBr2 perovskite, yielding high-quality films characterized by an enlarged crystal size, reduced grain boundaries, and smooth surfaces. And a wider absorption range and better energy band alignment were achieved owing to the nano-size effect of QDs. These improvements led to a decreased defect density and the suppression of non-radiative recombination. Additionally, the presence of long-chain organic molecules in the QD solution promoted the formation of a hydrophobic surface, significantly enhancing the long-term stability of CsPbIBr2 PSCs. Consequently, the devices achieved a PCE of 9.20% and maintained an initial efficiency of 85% after 60 days of storage in air. Thus, this strategy proves to be an effective approach for the preparation of efficient and stable CsPbIBr2 PSCs.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510122/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142516484","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 Nanotubes and Nanosheets for Sustainable Solutions. 用于可持续解决方案的纳米碳管和纳米片。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-14 DOI: 10.3390/nano14201649

Muralidharan Paramsothy

引用次数: 0

Doxorubicin Incorporation into Gold Nanoparticles: An In Vivo Study of Its Effects on Cardiac Tissue in Rats. 多柔比星掺入金纳米粒子：关于其对大鼠心脏组织影响的体内研究。

IF 4.4 3区材料科学

Nanomaterials Pub Date : 2024-10-14 DOI: 10.3390/nano14201647

Patricia Lorena Dulf, Camelia Alexandra Coadă, Adrian Florea, Remus Moldovan, Ioana Baldea, Daniel Vasile Dulf, Dan Blendea, Luminita David, Bianca Moldovan, Valentina Ioana Morosan, Sergiu Macavei, Gabriela Adriana Filip

{"title":"Doxorubicin Incorporation into Gold Nanoparticles: An In Vivo Study of Its Effects on Cardiac Tissue in Rats.","authors":"Patricia Lorena Dulf, Camelia Alexandra Coadă, Adrian Florea, Remus Moldovan, Ioana Baldea, Daniel Vasile Dulf, Dan Blendea, Luminita David, Bianca Moldovan, Valentina Ioana Morosan, Sergiu Macavei, Gabriela Adriana Filip","doi":"10.3390/nano14201647","DOIUrl":"https://doi.org/10.3390/nano14201647","url":null,"abstract":"Gold nanoparticles (Au-NPs) have been explored as potential vectors for enhancing the antitumor efficacy of doxorubicin (DOX) while minimizing its cardiotoxic effects. However, the impacts of DOX Au-NPs on cardiac function and oxidative stress remain inadequately understood. This study aimed to explore the effects of DOX Au-NPs in comparison to free DOX, focusing on oxidative stress markers, inflammation, ultrastructural changes, and cardiac function. Male rats were divided into the following four groups: control, citrate Au-NPs, DOX, and DOX Au-NPs. Cardiac function was assessed using echocardiography, and oxidative stress was evaluated through Nrf2, malondialdehyde (MDA) and superoxide dismutase (SOD) levels, and the GSH/GSSG ratio. The ultrastructure of cardiac tissue was assessed by transmission electron microscopy (TEM). Rats treated with DOX Au-NPs exhibited significant cardiac dysfunction, as indicated by a reduction in fractional shortening and ejection fraction. Oxidative stress markers, including elevated MDA levels and a reduced GSH/GSSG ratio, were significantly worse in the DOX Au-NP group. SOD levels decreased, indicating compromised antioxidant defenses. Citrate Au-NPs also caused some alterations in cardiac function and ultrastructure but without other molecular alterations. DOX Au-NPs failed to mitigate cardiotoxicity, instead exacerbating oxidative stress and cardiac dysfunction. DOX Au-NPs possess cardiotoxic effects, necessitating further investigation into alternative nanoparticle formulations or therapeutic combinations to ensure both efficacy and safety in cancer treatment.","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":null,"pages":null},"PeriodicalIF":4.4,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11510282/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142504478","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