Beilstein Journal of Nanotechnology最新文献

{"title":"Zeolite materials with Ni and Co: synthesis and catalytic potential in the selective hydrogenation of citral.","authors":"Inocente Rodríguez-Iznaga, Yailen Costa Marrero, Tania Farias Piñeira, Céline Fontaine, Lexane Paget, Beatriz Concepción Rosabal, Arbelio Penton Madrigal, Vitalii Petranovskii, Gwendoline Lafaye","doi":"10.3762/bjnano.16.40","DOIUrl":"https://doi.org/10.3762/bjnano.16.40","url":null,"abstract":"<p><p>Zeolitic materials incorporating mono- and bimetallic systems of nickel and cobalt were obtained from natural zeolite modified with Ni²⁺ and Co²⁺ chloride solutions through traditional ion exchange (IE) and impregnation (Imp) processes. Special attention was given to analyzing the cationic and anionic composition of the resulting materials. The catalytic potential was evaluated in the selective hydrogenation of citral, focused on the formation of unsaturated alcohols. The IE process replaced mainly Ca²⁺ and Na⁺ with Ni²⁺ and Co²⁺ cations in the zeolite phases (clinoptilolite and mordenite mix), while Imp resulted in higher metal content (2.0-2.7%) but retained significant amounts of chloride (1.9-3.8%), as confirmed by XRD and temperature-programmed reduction. The materials prepared by IE had negligible chloride content (0.02-0.07%), and their specific surface areas (138-146 m²/g) were greater than those of the materials obtained by Imp (54-67 m²/g). The bimetallic systems exhibited enhanced reducibility of the Co²⁺ and Ni²⁺ isolated cations, attributed to synergistic interactions that weakened the cation-framework binding. Catalytic activity tests showed that nickel species were primarily responsible for citronellal formation. Among all materials, the bimetallic CoNi_IE catalyst, prepared by IE, was the only one to produce unsaturated alcohols, suggesting that synergistic Ni-Co interactions played a role in their formation.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"520-529"},"PeriodicalIF":2.6,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12018909/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952662","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}

{"title":"Water in nanoporous hexagonal boron nitride nanosheets: a first-principles study.","authors":"Juliana A Gonçalves, Ronaldo J C Batista, Marcia C Barbosa","doi":"10.3762/bjnano.16.39","DOIUrl":"https://doi.org/10.3762/bjnano.16.39","url":null,"abstract":"<p><p>Nanoporous membranes are being explored as efficient materials for water filtration and desalination applications. In this study, we analyzed the behavior of pores within a freestanding hexagonal boron nitride (<i>h</i>-BN) monolayer in contact with water molecules. Our investigation revealed that triangular and rhombic pores induce wrinkles in non-deposited <i>h</i>-BN monolayers because of the repulsion between hydrogen orbitals at their 60° vertices. We found that the addition of N-H or B-H pairs at 60° vertices mitigates these out-of-plane deformations. Surprisingly, the stability of triangular pores with N-H termination is significantly increased by the addition of B-H pairs, whereas the stability of triangular pores with B-H termination is decreased by the addition of N-H pairs, indicating a distinct evolution of the pore shape based on the initial edge termination. Furthermore, we observed that the combination of H and OH is more effective in stabilizing the edges of rhombic pores compared to using only H atoms, whereas the opposite is true for small triangular pores that cannot accommodate the ·OH radical. Our findings also demonstrate that rhombic pores have a high affinity for water absorption, much higher than that of triangular pores. This suggests that the type of pore can significantly alter the hydrophobicity of <i>h</i>-BN and influence water flow through the membrane. Additionally, we observed that water molecules tend to form hydrogen bonds with the N-H-terminated surface in rhombic pores, but not with the B-N-terminated surface, potentially leading to asymmetries in water flow through the pore area. Overall, our study provides valuable insights into the interaction between nanoporous <i>h</i>-BN membranes and water.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"510-519"},"PeriodicalIF":2.6,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11995719/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143952722","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}

{"title":"N₂ ⁺-implantation-induced tailoring of structural, morphological, optical, and electrical characteristics of sputtered molybdenum thin films.","authors":"Usha Rani, Kafi Devi, Divya Gupta, Sanjeev Aggarwal","doi":"10.3762/bjnano.16.38","DOIUrl":"10.3762/bjnano.16.38","url":null,"abstract":"<p><p>Molybdenum (Mo) thin films have extensive applications in energy storage devices and photovoltaic solar cells because of their remarkable thermal stability, high melting point, and chemical inertness. In the present study, Mo thin films of different thicknesses (150, 200, 250, and 300 nm) have been deposited on Si(100) substrates via radio frequency sputtering in an argon atmosphere at room temperature. Some of these films have been implanted with 1 × 10¹⁷ N₂ ⁺·cm^-2 at 30 keV using a current density of 4 µA·cm^-2. Surface morphology and structural, optical, and electrical properties of the as-deposited and implanted Mo thin films have been systematically investigated. The crystallinity of Mo thin films is enhanced with increasing thickness of the as-deposited films. This pattern persists with film thickness even after N₂ ⁺ implantation. After implantation, crystallinity decreases relative to as-deposited films with the same nominal thickness. The AFM analysis reveals that RMS roughness increases with the thickness of Mo films. Optical studies using spectroscopic ellipsometry reveal a significant increase in absorbance and reflectance in as-deposited and N₂ ⁺-implanted films. Electrical investigations show that the conductivity increases with film thickness in both as-deposited and implanted films. The conductivity decreases for the same nominal film thickness after implantation.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"495-509"},"PeriodicalIF":2.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11973585/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143802239","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}

{"title":"Performance optimization of a microwave-coupled plasma-based ultralow-energy ECR ion source for silicon nanostructuring.","authors":"Joy Mukherjee, Safiul Alam Mollick, Tanmoy Basu, Tapobrata Som","doi":"10.3762/bjnano.16.37","DOIUrl":"10.3762/bjnano.16.37","url":null,"abstract":"<p><p>This paper presents a comprehensive optimization of key parameters for generating ion beams in a microwave-coupled plasma-based ultralow-energy electron cyclotron resonance ion source, generally used for nanostructuring solid surfaces. The investigation focuses on developing, accelerating, and extracting Ar ions from a magnetron-coupled plasma cup utilizing a three-grid ion extraction composed of molybdenum. The study systematically examines the dependence of ion beam current on critical parameters, such as gas pressure, magnetron power, extraction voltage, and ion energies. The Gaussian nature of the beam profile is scrutinized and elucidated within the context of grid extraction-based ion sources. Plasma physics principles are employed to interpret the observed variations in the beam current with various parameters. The optimized beam current is used to investigate the inert ion-induced nanopatterning of silicon surfaces, at various ion fluences and incidence angles. The pre- and post-bombardment changes in optical properties, resulting from nanopatterned surfaces, are investigated using UV-vis reflectivity measurements and correlated with the dimensions of the nanopatterns. This manuscript highlights the potential applications arising from these findings, emphasizing the transformative impact of nanopatterning through low-energy inert ions.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"484-494"},"PeriodicalIF":2.6,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11973586/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143802202","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}

{"title":"Impact of adsorbate-substrate interaction on nanostructured thin films growth during low-pressure condensation.","authors":"Alina V Dvornichenko, Vasyl O Kharchenko, Dmitrii O Kharchenko","doi":"10.3762/bjnano.16.36","DOIUrl":"10.3762/bjnano.16.36","url":null,"abstract":"<p><p>We discuss effects of elastic adsorbate-substrate interactions in processes of nanostructuring of thin films during low-pressure condensation in the framework of theoretical approaches and numerical simulations. It will be shown that an increase in the elastic interaction strength induces first-order transitions and pattern formation. We simulate deposition on one- and multicomponent substrates with different strengths of adsorbate-substrate interactions. We will show that an increase in the strength of adsorbate-substrate interactions stimulates the formation of stable surface structures during deposition, which leads to an increase in its coverage and the formation of a smaller number of adsorbate islands of larger size. At elevated adsorption rates, an increase in adsorbate-substrate interactions results in the transformation of the surface morphology and the formation of percolating adsorbate structures. Deposition onto multicomponent substrates leads to the formation of a stationary surface morphology with an elevated number of adsorbate islands of smaller size, compared to one-component substrates. This study provides a deep insight into the peculiarities of nanostructured thin films' growth in low-pressure systems with different adsorbate-substrate bonding.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"473-483"},"PeriodicalIF":2.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11956068/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750886","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}

{"title":"Synthetic-polymer-assisted antisense oligonucleotide delivery: targeted approaches for precision disease treatment.","authors":"Ana Cubillo Alvarez, Dylan Maguire, Ruairí P Brannigan","doi":"10.3762/bjnano.16.34","DOIUrl":"10.3762/bjnano.16.34","url":null,"abstract":"<p><p>This review explores the recent advancements in polymer-assisted delivery systems for antisense oligonucleotides (ASOs) and their potential in precision disease treatment. Synthetic polymers have shown significant promise in enhancing the delivery, stability, and therapeutic efficacy of ASOs by addressing key challenges such as cellular uptake, endosomal escape, and reducing cytotoxicity. The review highlights key studies from the past decade demonstrating how these polymers improve gene silencing efficiencies, particularly in cancer and neurodegenerative disease models. Despite the progress achieved, barriers such as immunogenicity, delivery limitations, and scalability still need to be overcome for broader clinical application. Emerging strategies, including stimuli-responsive polymers and advanced nanoparticle systems, offer potential solutions to these challenges. The review underscores the transformative potential of polymer-enhanced ASO delivery in personalised medicine, emphasising the importance of continued innovation to optimise ASO-based therapeutics for more precise and effective disease treatments.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"435-463"},"PeriodicalIF":2.6,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11956074/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750898","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}

{"title":"Effect of additives on the synthesis efficiency of nanoparticles by laser-induced reduction.","authors":"Rikuto Kuroda, Takahiro Nakamura, Hideki Ina, Shuhei Shibata","doi":"10.3762/bjnano.16.35","DOIUrl":"10.3762/bjnano.16.35","url":null,"abstract":"<p><p>Laser-induced reduction in liquid (LRL) is a physicochemical technique for synthesizing nanoparticles by irradiating a solution containing metal ions with a high-intensity laser. It is simple and environmentally friendly, as it does not require reducing agents or high-temperature, high-pressure environments. In this method, nanoparticles are synthesized by reducing metal ions with short-lived radical species produced by the breakdown of solvent molecules in a high-intensity reaction field near the focus of the laser. This unique reaction has the characteristic of being able to synthesize non-equilibrium solid-solution alloy nanoparticles. On the other hand, it is necessary to improve the synthesis efficiency of nanoparticles in large quantities for practical use. In this study, we investigated improvements of the synthesis efficiency of nanoparticles in LRL by adding scavengers, such as isopropyl alcohol (IPA) and glycerin, for oxidative radicals formed by laser irradiation to the solution and converting the oxidative radicals into reducing species. Based on the evaluation of the synthesis efficiency of Au nanoparticles, it was confirmed that the addition of IPA increased the synthesis efficiency of nanoparticles by about five times, and the addition of glycerin increased it by about nine times. Furthermore, by adding these oxidizing radical scavengers, it became possible to synthesize nanoparticles even when the concentration of metal ions in the solution was increased. And as a result, the synthesis efficiency of nanoparticles increased by more than 18 times. This means that it is possible to synthesize 160 mg/h of Au nanoparticles in the current system. It was also shown that non-equilibrium solid-solution alloy nanoparticles could be synthesized even when a radical scavenger was added. Furthermore, the addition of a radical scavenger also made it possible to synthesize base metal nanoparticles, which have been difficult to synthesize using the LRL. In addition, the efficiency of nanoparticle synthesis has been dramatically improved, and the variety of materials that can be produced has increased. This expands the potential of nanoparticles synthesized by LRL to be used in industrial applications.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"464-472"},"PeriodicalIF":2.6,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11956077/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750934","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}

{"title":"Biomimetics and bioinspired surfaces: from nature to theory and applications.","authors":"Rhainer Guillermo Ferreira, Thies H Büscher, Manuela Rebora, Poramate Manoonpong, Zhendong Dai, Stanislav N Gorb","doi":"10.3762/bjnano.16.32","DOIUrl":"10.3762/bjnano.16.32","url":null,"abstract":"","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"418-421"},"PeriodicalIF":2.6,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11956059/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750929","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}

{"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":"<p><p>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.</p>","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}

{"title":"Size control of nanoparticles synthesized by pulsed laser ablation in liquids using donut-shaped beams.","authors":"Abdel Rahman Altakroury, Oleksandr Gatsa, Farbod Riahi, Zongwen Fu, Miroslava Flimelová, Andrei Samokhvalov, Stephan Barcikowski, Carlos Doñate-Buendía, Alexander V Bulgakov, Bilal Gökce","doi":"10.3762/bjnano.16.31","DOIUrl":"10.3762/bjnano.16.31","url":null,"abstract":"<p><p>The potential to modify the size distribution of nanoparticles synthesized by pulsed laser ablation in liquids is demonstrated using a donut-shaped laser beam. In experiments on pulsed laser ablation in water of gold, yttrium oxide, and high-entropy alloy targets with both Gaussian and donut-shaped beams, we observed a significant reduction in particle size, narrowing of the size distribution width, and an improvement in sphericity when utilizing the donut-shaped laser beam. We performed time-resolved shadowgraph imaging of the laser-induced cavitation bubble, revealing a toroidal structure that overruns the ring-shaped ablation site, compared to the quasi-hemispherical bubble covering the ablation spot produced by the Gaussian beam. Based on this pioneering study, further investigation with higher temporal and spatial resolution are warranted.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"407-417"},"PeriodicalIF":2.6,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11956078/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143750895","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}