Beilstein Journal of Nanotechnology最新文献_第4页

Biomimetics and bioinspired surfaces: from nature to theory and applications. 仿生和仿生表面：从自然到理论和应用。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-26 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.32

Rhainer Guillermo Ferreira, Thies H Büscher, Manuela Rebora, Poramate Manoonpong, Zhendong Dai, Stanislav N Gorb

引用次数: 0

Quantification of lead through rod-shaped silver-doped zinc oxide nanoparticles using an electrochemical approach. 利用电化学方法通过棒状掺银氧化锌纳米颗粒定量测定铅。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-26 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.33

Ravinder Lamba, Gaurav Bhanjana, Neeraj Dilbaghi, Vivek Gupta, Sandeep Kumar

{"title":"Quantification of lead through rod-shaped silver-doped zinc oxide nanoparticles using an electrochemical approach.","authors":"Ravinder Lamba, Gaurav Bhanjana, Neeraj Dilbaghi, Vivek Gupta, Sandeep Kumar","doi":"10.3762/bjnano.16.33","DOIUrl":"10.3762/bjnano.16.33","url":null,"abstract":"Special features of zinc oxide nanoparticles have drawn a lot of interest due to their wide bandgap, high surface area, photocatalytic activity, antimicrobial activity, and semiconductor properties. By doping ZnO nanoparticles with transition metals, we can alter their electrical, optical, and magnetic properties by introducing new electronic states into the band structure. Herein, Ag is added to ZnO nanostructures to improve their optical properties to detect heavy metal lead ions. The prepared lead sensor with ultrahigh sensitivity, based on silver-doped ZnO nanorods (Ag@ZnO NRs), was fabricated and characterized. The morphological, structural, compositional, and optical characteristics of the Ag@ZnO NRs were investigated using a variety of methods after they were fabricated using a low-temperature co-precipitation method. The resulting Ag@ZnO NRs had good optical properties, nanorod morphologies, and high crystallinity with no impurities. Technological advancements are leading people to use lightweight electronics and affordable sensors. Electrochemical techniques comparatively offer quick, portable, sensitive, and inexpensive basic equipment for heavy metal detection. The interactions between Ag@ZnO NRs and lead were studied using electrochemical methods. The prepared lead sensor using Ag@ZnO NRs show a very low detection limit and a very high sensitivity toward lead. The lead chemical sensor that was developed had a detection limit of 3 ppm with a sensitivity of 16 µA·ppm-1·cm-2. The recorded reaction time of lead sensor was less than two seconds.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"422-434"},"PeriodicalIF":2.6,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11956069/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Size control of nanoparticles synthesized by pulsed laser ablation in liquids using donut-shaped beams. 用环形光束在液体中脉冲激光烧蚀合成纳米颗粒的尺寸控制。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-25 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.31

Abdel Rahman Altakroury, Oleksandr Gatsa, Farbod Riahi, Zongwen Fu, Miroslava Flimelová, Andrei Samokhvalov, Stephan Barcikowski, Carlos Doñate-Buendía, Alexander V Bulgakov, Bilal Gökce

引用次数: 0

ReactorAFM/STM - dynamic reactions on surfaces at elevated temperature and atmospheric pressure. 反应器afm /STM -在高温和常压下表面上的动态反应。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-21 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.30

Tycho Roorda, Hamed Achour, Matthijs A van Spronsen, Marta E Cañas-Ventura, Sander B Roobol, Willem Onderwaater, Mirthe Bergman, Peter van der Tuijn, Gertjan van Baarle, Johan W Bakker, Joost W M Frenken, Irene M N Groot

{"title":"ReactorAFM/STM - dynamic reactions on surfaces at elevated temperature and atmospheric pressure.","authors":"Tycho Roorda, Hamed Achour, Matthijs A van Spronsen, Marta E Cañas-Ventura, Sander B Roobol, Willem Onderwaater, Mirthe Bergman, Peter van der Tuijn, Gertjan van Baarle, Johan W Bakker, Joost W M Frenken, Irene M N Groot","doi":"10.3762/bjnano.16.30","DOIUrl":"10.3762/bjnano.16.30","url":null,"abstract":"Previous work has shown the ReactorSTM and ReactorAFM, capable of studying materials under industrially relevant conditions. Here we show current developments of the ReactorAFM/STM, implementing a qPlus sensor to add the ability of combining atomic force microscopy (AFM) and scanning tunneling microscopy (STM) techniques to study the geometric and electronic structure of materials under reaction conditions. We demonstrate this by imaging a Pd(100) single crystal at 450 K with combined AFM/STM. The surface is compared under ultrahigh vacuum and under 0.5 bar O2 pressure showing a notable increase in RMS current, which we attribute to oxidation. Also, we study cobalt nanoparticle catalysts on an aluminum oxide support, industrially relevant in the Fischer-Tropsch synthesis. The catalysts are imaged before and after reaction at 430 K as the current maximum temperature of the qPlus sensor used falls just below the reaction temperature. Quadrupole mass spectrometry data show the reaction taking place by monitoring product gases during heating and cooling of the sample under CO and H2 gas pressures of 2 bar. The monitored gases include H2O as byproduct and the hydrocarbons ethane (m/z = 30), propane (m/z = 44), and hexane (m/z = 86), which all show increases in counts while between 490 and 550 K. The added ability to scan various surfaces with combined AFM/STM while monitoring the reaction products demonstrates the versatility offered by the ReactorAFM/STM to study catalysts under realistic industrial conditions.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"397-406"},"PeriodicalIF":2.6,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11931644/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Engineered PEG-PCL nanoparticles enable sensitive and selective detection of sodium dodecyl sulfate: a qualitative and quantitative analysis. 工程PEG-PCL纳米颗粒使十二烷基硫酸钠的敏感和选择性检测：定性和定量分析。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-20 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.29

Soni Prajapati, Ranjana Singh

{"title":"Engineered PEG-PCL nanoparticles enable sensitive and selective detection of sodium dodecyl sulfate: a qualitative and quantitative analysis.","authors":"Soni Prajapati, Ranjana Singh","doi":"10.3762/bjnano.16.29","DOIUrl":"10.3762/bjnano.16.29","url":null,"abstract":"Sodium dodecyl sulfate (SDS) is a widely used anionic surfactant in laboratory, household, and industrial applications, which ultimately enters the environment through various pathways. This has led to significant concerns regarding developing rapid onsite qualitative and quantitative methods for estimating SDS in aqueous solutions. Although a range of high-throughput techniques is currently utilized for SDS quantification, these methods are often expensive, labor-intensive, and require specialized technical expertise. This study developed a novel colorimetric method for the selective and sensitive detection of SDS, utilizing polyethylene glycol-polycaprolactone nanoparticles (PEG-PCL NPs) synthesized via a ring-opening polymerization approach. The synthesized nanoparticles exhibited a distinct colorimetric response to SDS when combined with the Bradford reagent, which acted as a linker molecule. Interference studies demonstrated the high selectivity of the method, even in the presence of various heavy metals and other surfactants. The method showed excellent linearity over a concentration range of 0-200 μg/mL, with a correlation coefficient (R 2) of 0.98. The limits of detection and quantification for the proposed method were determined to be 26.14 μg/mL and 79.23 μg/mL, respectively. These findings indicate that the newly developed method offers high selectivity and sensitivity for SDS detection, making it a promising analytical tool for rapid and onsite estimation.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"385-396"},"PeriodicalIF":2.6,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11931640/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143699657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 of a mucoadhesive drug delivery system and its interaction with gastric cells. 黏附给药系统的研制及其与胃细胞的相互作用。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-13 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.28

Ahmet Baki Sahin, Serdar Karakurt, Deniz Sezlev Bilecen

{"title":"Development of a mucoadhesive drug delivery system and its interaction with gastric cells.","authors":"Ahmet Baki Sahin, Serdar Karakurt, Deniz Sezlev Bilecen","doi":"10.3762/bjnano.16.28","DOIUrl":"10.3762/bjnano.16.28","url":null,"abstract":"Drugs that are designed for local treatment of gastric diseases require increased gastric residence time for prolonged action and increased efficacy. In this study, we report a mucoadhesive drug delivery system that was developed to fulfill these requirements. Alginate nanoparticles were synthesized by water-in-oil emulsification followed by external gelation and then coated with the mucoadhesive polymer Eudragit RS100. The formulated nanoparticles had a mean size of 219 nm and positive charge. A peptide, as a model drug, was loaded onto the nanoparticles with an encapsulation efficiency of 58%. The release of the model drug from the delivery system was pH-independent and lasted for 7 days. The periodic acid-Schiff stain assay indicated 69% mucin interaction for the nanoparticles, which were also capable of diffusion through artificial mucus. The nanoparticles were not toxic to gastric epithelial cells and can be internalized by the cells within 4 h. The adsorption of nanoparticles onto mucus-secreting gastric cells was found to be correlated with cell number. The delivery system developed in this study is intended to be loaded with active therapeutic agents and has the potential to be used as an alternative drug delivery strategy for the treatment of gastric related diseases.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"371-384"},"PeriodicalIF":2.6,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11912645/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143647057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Vortex lattices of layered HTSCs at different vortex-vortex interaction potentials. 层状HTSCs在不同涡涡相互作用势下的涡格。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-13 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.27

Valerii P Lenkov, Anastasia N Maksimova, Anna N Moroz, Vladimir A Kashurnikov

引用次数: 0

Pulsed laser in liquid grafting of gold nanoparticle-carbon support composites. 脉冲激光在金纳米颗粒-碳支撑复合材料液体接枝中的应用。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-07 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.26

Madeleine K Wilsey, Teona Taseska, Qishen Lyu, Connor P Cox, Astrid M Müller

引用次数: 0

Tailoring of physical properties of RF-sputtered ZnTe films: role of substrate temperature. 射频溅射ZnTe薄膜物理性能的调整：衬底温度的作用。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-05 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.25

Kafi Devi, Usha Rani, Arun Kumar, Divya Gupta, Sanjeev Aggarwal

{"title":"Tailoring of physical properties of RF-sputtered ZnTe films: role of substrate temperature.","authors":"Kafi Devi, Usha Rani, Arun Kumar, Divya Gupta, Sanjeev Aggarwal","doi":"10.3762/bjnano.16.25","DOIUrl":"10.3762/bjnano.16.25","url":null,"abstract":"In this study, zinc telluride (ZnTe) films were grown on quartz substrates at room temperature, 300 °C, 400 °C, 500 °C, and 600 °C using RF sputtering. The thickness of the films has been found to decrease from 940 nm at room temperature to 200 nm at 600 °C with increasing substrate temperature. The structural investigation using grazing incidence angle X-ray diffraction revealed that films deposited at room temperature are amorphous; those deposited at other substrate temperatures are polycrystalline with a cubic zincblende structure and a preferred orientation along the [111] direction. An increase in crystallite size (from 37.60 ± 0.42 Å to 68.88 ± 1.04 Å) is observed with increased substrate temperature. This leads to a reduction in microstrain and dislocation density. The optical studies using UV-vis-NIR spectroscopy reveal that the transmittance of films increases with substrate temperature. Further, the shift in transmittance threshold towards lower wavelengths with substrate temperature indicates that the optical bandgap of the films can be tuned from 1.47 ± 0.02 eV to 3.11 ± 0.14 eV. The surface morphology of the films studied using atomic force microscopy reveals that there is uniform grain growth on the surface. Various morphological parameters such as roughness, particle size, particle density, skewness, and kurtosis were determined. Current-voltage characteristics indicate that the conductivity of the films increased with substrate temperature. The observed variations in structural, morphological, and optical parameters have been discussed and correlated. The wide bandgap (3.11 eV), high crystallinity, high transmittance, and high conductivity of the ZnTe film produced at 600 °C make it a suitable candidate for use as a buffer layer in solar cell applications.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"333-348"},"PeriodicalIF":2.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11897647/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143613214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Graphene oxide-chloroquine conjugate induces DNA damage in A549 lung cancer cells through autophagy modulation. 氧化石墨烯-氯喹偶联物通过自噬调节诱导A549肺癌细胞DNA损伤。

IF 2.6 4区材料科学

Beilstein Journal of Nanotechnology Pub Date : 2025-03-03 eCollection Date: 2025-01-01 DOI: 10.3762/bjnano.16.24

Braham Dutt Arya, Sandeep Mittal, Prachi Joshi, Alok Kumar Pandey, Jaime E Ramirez-Vick, Govind Gupta, Surinder P Singh

{"title":"Graphene oxide-chloroquine conjugate induces DNA damage in A549 lung cancer cells through autophagy modulation.","authors":"Braham Dutt Arya, Sandeep Mittal, Prachi Joshi, Alok Kumar Pandey, Jaime E Ramirez-Vick, Govind Gupta, Surinder P Singh","doi":"10.3762/bjnano.16.24","DOIUrl":"10.3762/bjnano.16.24","url":null,"abstract":"Autophagy is a highly regulated catabolic process by which unnecessary, dysfunctional, or damaged proteins and other cellular components are degraded and recycled to promote cellular differentiation, survival, and development. In response to endogenous or exogenous stresses, cancer cells use autophagy pathways for survival through activation of complex DNA damage repair (DDR) mechanisms. In the present study, we demonstrated the genotoxicity induced in A549 lung cancer cells by exposure to the GO-Chl nanoconjugate and elucidated the role of autophagy modulation in harnessing the DNA-damage response. GO-Chl causes loss of plasma membrane integrity, cell cycle arrest, and significant genotoxicity in A549 cells. Further, elevated expression of key autophagy proteins beclin-1, ATG-7, LC-3-I/II, and SQSTM1/p62 reveal that inhibition of autophagy plays a crucial role in regulating DDR capabilities of cancer cells. The results indicate that the interplay between DDR and autophagy pathways may open new paradigms for developing effective combinatorial nanoscale drug systems against multidrug-resistance cancers.","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"316-332"},"PeriodicalIF":2.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11878127/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143555670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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