Beilstein Journal of Nanotechnology最新文献

{"title":"Glycerol photoelectrochemical oxidation reaction at carbon nitrides/BiVO₄ materials.","authors":"Charles Garcia da Cunha, Isabelle M D Gonzaga, Cristian Hessel, Izadora F Reis, Ivo F Teixeira, Lucia H Mascaro, Elton Sitta","doi":"10.3762/bjnano.17.57","DOIUrl":"10.3762/bjnano.17.57","url":null,"abstract":"<p><p>The H₂ evolution from water electrolysis can be coupled with co-generation of other added-value products through biomass oxidation. In this study, we investigate the photoelectrochemical oxidation of glycerol using visible-light-responsive carbon nitride /bismuth vanadate (CN/BiVO₄) heterojunction photoelectrocatalysts. Different CN materials were explored, including polymeric carbon nitride (PCN), crystalline poly(heptazine imides) (PHI-Cat, in which Cat = Na, K, or Cs), and poly(triazine imide) (PTI-Li). The CN materials were spin-coated onto fluorine-doped tin oxide (FTO) substrates, followed by the Bi electrodeposition step and conversion to BiVO₄ in the presence of vanadyl acetylacetonate at 500 °C for 2 h. The CN/BiVO₄ heterojunctions presented bandgap energy values, <i>E</i> _g, similar to pure BiVO₄. X-ray diffraction analysis also revealed that the BiVO₄ phase was not altered by the presence of the CN. However, scanning electron microscopy analysis coupled to energy-dispersive X-ray spectroscopy (SEM-EDS) revealed regions rich in Bi and V, and others rich in C and N, suggesting the formation of heterojunctions. Photoelectrochemical studies demonstrated that BiVO₄ is active for both water and glycerol (1.0 mol·L^-1) oxidation, with a fourfold increase in photocurrent at 1.23 V vs reversible hydrogen electrode (RHE) upon glycerol addition. Clearly, the type of nitride employed in the heterojunctions influences the activity of the material for glycerol oxidation, with the photocurrent at 1.23 V vs RHE following the order: PCN/BiVO₄ > BiVO₄ ≈ PHI-Cs/BiVO₄ > PHI-K/BiVO₄ ≈ PHI-Na/BiVO₄ > PTI(Li)/BiVO₄. The SEM-EDS analysis after electrochemical tests revealed that the presence of crystalline CNs induces the segregation of vanadium oxides, contributing to a decrease in activity. On the other hand, the superior performance of PCN/BiVO₄ is attributed to a greater thermal stability of PCN during BiVO₄ synthesis, as indicated by thermogravimetric analysis. These findings highlight the dual importance of electronic compatibility and thermal resilience of CN materials in designing efficient heterojunction photoanodes for biomass-assisted hydrogen production.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"806-817"},"PeriodicalIF":3.5,"publicationDate":"2026-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13284753/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306772","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":"Tuning the electronic properties of defect-rich MoS₂.","authors":"Eric Juriatti, Martina Binninger, Carolin Schüle, Maren Zirwick, Katarina Margetic, Erika Giangrisostomi, Marcus Scheele, Heiko Peisert","doi":"10.3762/bjnano.17.56","DOIUrl":"10.3762/bjnano.17.56","url":null,"abstract":"<p><p>Transition metal dichalcogenides (TMDCs), including molybdenum disulfide (MoS₂), have emerged as a promising candidate for novel semiconducting devices. However, in many cases structural defects significantly affect the electronic properties of the material. The present study utilizes angle-resolved photoelectron spectroscopy (ARPES) and surface-sensitive core-level spectroscopy (SXPS, XAS) with synchrotron radiation to investigate the interfaces between defect-rich MoS₂ and perfluorinated cobalt phthalocyanine (CoPcF₁₆). Defects were introduced in synthetic MoS₂ bulk crystals by gentle argon and neon sputtering. Although the band structure is still visible after sputtering, especially SXPS reveals structural and electronic disturbances of the topmost MoS₂ layer. We show how the Fermi energy in such defect-rich MoS₂ can be tuned by the subsequent deposition of CoPcF₁₆, which is verified by a shift in Fermi level for the Ne sputtered surface, under complex charge rearrangements including a charge transfer from all the substrates towards the cobalt atom of the organic molecule.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"796-805"},"PeriodicalIF":3.5,"publicationDate":"2026-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13284750/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306732","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":"Restorative potential of laser-synthesized silver nanoparticles with <i>Salvia officinalis</i> for periodontal disease treatment: an in vitro study.","authors":"Jelena Filipović Tričković, Sanja Živković, Bojana Ilić, Miloš Tošić, Jelena Marinković, Ana Valenta Šobot, Miloš Momčilović","doi":"10.3762/bjnano.17.55","DOIUrl":"10.3762/bjnano.17.55","url":null,"abstract":"<p><p>Periodontal disease is one of the most prevalent human pathologies initiated by microbial dysbiosis and the inflammatory reaction that leads to gingival fibroblasts apoptosis, connective tissue damage, and atrophy, resulting in tooth loss. Beyond local damage, systemic associations highlight the urgent need for innovative therapies. Herein, we present an eco-friendly synthesis of silver nanoparticles (AgNPs) by picosecond pulsed laser ablation in liquid (PLAL), using <i>Salvia officinalis</i> aqueous extract (sage extract) as both medium and stabilizer. AgNPs were synthesized at two laser pulse energies (2 and 6 mJ), in sage extract and deionized water, and characterized by dynamic light scattering, transmission electron microscopy, and inductively coupled plasma optical emission spectroscopy. Synthesis at 6 mJ in sage extract (_SageAgNPs_6mJ) yielded well-dispersed, spherical nanoparticles (7.98 ± 2.9 nm) at a concentration of 21.6 ± 1.75 mg·L^-1. _SageAgNPs_6mJ exhibited potent antibacterial activity against <i>Aggregatibacter actinomycetemcomitans</i>, <i>Fusobacterium nucleatum</i>, and <i>Porphyromonas gingivalis</i> (MIC = 5.4 mg·L^-1), and showed equal or superior antibacterial activity compared to 0.2% chlorhexidine. Importantly, at MIC concentration, _SageAgNPs_6mJ were non-cytotoxic to primary human gingival fibroblasts and enhanced their proliferation by approximately 50% after 24 h. This was shown by increased Ki-67 proliferation index, increased type-I and total collagen production up to 11% after 24 h and significantly reduced IL-6 by 23% after 24 h, which returned to the baseline levels after 48 h. These findings define a clear therapeutic window, where the same concentration that eradicates bacteria also promotes gingival cell regeneration and reduces inflammation. This dual antibacterial and regenerative action demonstrates the high potential of sage-assisted PLAL-synthesized AgNPs as a safe, sustainable strategy for periodontal disease treatment.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"781-795"},"PeriodicalIF":3.5,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13284752/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148306761","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":"Substrate-dependent pore formation in molybdenum disulfide monolayers under ion irradiation.","authors":"Yossarian Liebsch, Umair Javed, Lucia Skopinski, Leon Daniel, Franziska Appel, Radia Rahali, Clara Grygiel, Henning Lebius, Carolin Frank, Lars Breuer, Leon Kirsch, Frieder Koch, Jani Kotakoski, Marika Schleberger","doi":"10.3762/bjnano.17.54","DOIUrl":"10.3762/bjnano.17.54","url":null,"abstract":"<p><p>Ion irradiation is a versatile tool for nanostructuring surfaces, yet the roles of energy deposition and dissipation at the surface and in ultrathin materials remain poorly understood. In this study, we investigate nanopore formation in monolayer MoS₂ on different substrates under irradiation of highly charged ions (HCIs) and swift heavy ions (SHIs) - two types of ions that, despite having vastly different kinetic energies, both interact primarily with the electronic system of the target. Using scanning transmission electron microscopy, we quantify pore radii and pore formation efficiencies for suspended MoS₂, MoS₂ on SiO₂, bilayer MoS₂, and MoS₂ on gold. Both pore size and pore formation efficiency exhibit a pronounced dependence on the type of substrate. Pores are largest and most frequent in MoS₂ on SiO₂, while the gold substrate massively quenches pore formation. The observed pore dimensions under both HCI and SHI irradiation conclusively demonstrate the central role of substrate and interface-dependent electronic dissipation pathways regarding damage under these types of ion irradiation.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"769-780"},"PeriodicalIF":3.5,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13267488/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148262954","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":"Interface-engineered Caco-2 cell culture on a collagen-coated liquid-liquid interface in a microfluidic device.","authors":"Satoru Kuriu, Soo Hyeon Kim","doi":"10.3762/bjnano.17.53","DOIUrl":"10.3762/bjnano.17.53","url":null,"abstract":"<p><p>Epithelial tissues form selective barriers essential for physiological homeostasis. Conventional in vitro models rely on solid substrates, which limit the physicochemical flexibility of the cellular microenvironment. Here, we introduce a microfluidic platform in which a collagen-coated liquid-liquid interface formed between perfluorocarbon (FC-43) and culture medium serves as a substrate for epithelial cell adhesion. By culturing Caco-2 cells in the device, we show that the liquid interface supports cell attachment and the formation of monolayers. Immunofluorescence observation reveals the development of tight junctions and organized actin cytoskeletons, indicating early-stage epithelial maturation. Our new microfluidic system enables the formation of stable liquid-liquid interfaces that serve as viable and flexible substrates for epithelial cell culture, offering new opportunities for multiphase microfluidic models of epithelial barriers.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"760-768"},"PeriodicalIF":3.5,"publicationDate":"2026-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13267505/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148262994","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":"Tailoring Ag-Pt nanoalloys through solid-state dewetting: structural and optical insights.","authors":"Marcin Łapiński, Piotr Okoczuk, Blaž Grobiša, Ewa Pawlikowska, Amelia Rozwadowska, Wojciech Sadowski, Barbara Kościelska","doi":"10.3762/bjnano.17.52","DOIUrl":"10.3762/bjnano.17.52","url":null,"abstract":"<p><p>In this work, a cost-effective method for fabricating silver-platinum nanoalloys through thermally activated dewetting of thin metallic films is demonstrated. Ag and Pt bilayers with a total thickness of 8 nm were deposited using DC magnetron sputtering, followed by annealing at 650 °C under an argon atmosphere. The process induced the transformation of continuous bilayers into isolated nanoislands through solid-state dewetting. Scanning electron microscopy and transmission electron microscopy analyses revealed the formation of well-defined, nearly spherical nanoislands with a homogeneous elemental distribution, as measured by energy dispersive spectroscopy. Additionally, X-ray photoelectron spectroscopy measurements confirmed the coexistence of both metals in metallic states, with a slight Ag deficiency attributed to its higher instability and desorption during the annealing process. Optical measurements revealed the presence of a single resonance peak. The composition-dependent plasmonic resonance band was observed for low Pt contents, while progressively blue-shifting and decreasing in intensity with increasing Pt concentration. This behavior is consistent with the strong d-electron contribution of platinum, which suppresses plasmonic oscillations. The obtained results demonstrate that thermally activated dewetting enables the synthesis of homogeneous Ag-Pt nanoalloys at the nanoscale, both in volume and on the surface of nanostructures, overcoming miscibility limitations of the bulk Ag-Pt system, and provide insight into their structure-property relationships relevant for catalytic and plasmonic applications.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"748-759"},"PeriodicalIF":3.5,"publicationDate":"2026-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13267522/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148263000","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":"Superconducting artificial neural networks and quantum circuits.","authors":"Anatolie S Sidorenko","doi":"10.3762/bjnano.17.51","DOIUrl":"10.3762/bjnano.17.51","url":null,"abstract":"","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"744-747"},"PeriodicalIF":3.5,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13267486/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148262976","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":"Oxidative atmosphere-driven formation of single-phase spinel CuRh₂O₄ nanofibers for alkaline water oxidation.","authors":"Namhee Kim, Sumin Ko, Sohyeon Choi, Seoyoon Jang, Myung Hwa Kim, Dasol Jin","doi":"10.3762/bjnano.17.50","DOIUrl":"10.3762/bjnano.17.50","url":null,"abstract":"<p><p>Cu-Rh bimetallic single-phase spinel oxide nanofibers were synthesized via electrospinning followed by post-annealing in precisely controlled oxidative environments. By systematically tuning the O₂ concentration in the He carrier gas flow during the annealing process, the optimal atmosphere was identified to produce phase-pure CuRh₂O₄. The as-prepared CuRh₂O₄ nanofibers exhibited excellent electrocatalytic performance toward the oxygen evolution reaction in 1.0 M NaOH (aq), highlighting the importance of atmosphere-controlled thermal treatment for engineering high-activity spinel oxide electrocatalysts.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"737-743"},"PeriodicalIF":3.5,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13224052/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148148286","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":"Environmental applications of silver nanoparticles: state-of-the-art review and emerging trends.","authors":"Soni Prajapati, Akash Kumar, Ranjana Singh","doi":"10.3762/bjnano.17.49","DOIUrl":"10.3762/bjnano.17.49","url":null,"abstract":"<p><p>Silver nanoparticles (AgNPs) possess inherent catalytic, antimicrobial, and optical properties, making them a strong candidate for environmental applications in water, air, and soil. Indeed, various reviews are available, though a significant gap persists in addressing all environmental pollutants. This review comprehensively and critically analyses the advancement in AgNP research spanning from synthesis and characterisation to practical deployment and ecotoxicological assessment. The AgNP-based systems are evaluated regarding antimicrobial disinfection, adsorptive and catalytic/photocatalytic removal of persistent organic pollutants, and integration into antifouling nanofiltration and ultrafiltration membrane technologies used for management of water pollutants. In addition, AgNPs-assisted nanosystems in fibrous filter membranes and photocatalytic composite coatings for the removal of volatile organic compounds, particulate matter, and gaseous pollutants are reviewed. Furthermore, AgNP applications for heavy metal immobilisation, organic pollutant degradation, plant disease management, and growth promotion are assessed alongside their ecotoxicological implications. Besides remediation, environmental monitoring capabilities of AgNP-based sensing platforms are systematically reviewed across five transduction modalities, including colourimetric/UV-vis LSPR, SERS, electrochemical, fluorometric, and gas sensing, covering a broad range of analytes considered as environmental pollutants. Key challenges, including nanoparticle aggregation, long-term colloidal instability, synthesis irreproducibility, ecotoxicological risks arising from Ag⁺ ion release and environmental persistence, and the current absence of harmonised regulatory frameworks for AgNP deployment, are critically discussed. This review provides a structured, evidence-based foundation for researchers and engineers working toward the responsible, scalable application of AgNP-based technologies to address contemporary environmental challenges.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"697-736"},"PeriodicalIF":3.5,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13224055/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148148255","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":"Molecular engineering of individual dye-based nanoparticle photostability for ultrabright two-photon fluorescence.","authors":"Eleonore Kurek, Sasha Cooper, Alexandre Clausolles, Karen Perronet, Jonathan Daniel, Mireille Blanchard-Desce, François Marquier","doi":"10.3762/bjnano.17.48","DOIUrl":"10.3762/bjnano.17.48","url":null,"abstract":"<p><p>Dye-based fluorescent organic nanoparticles (dFONs) represent a promising class of bioimaging probes combining high brightness with molecular tunability. While their fluorescence performance is well established for one-photon excitation, their single-particle properties under two-photon excitation remain to be evaluated. Here, we perform a comprehensive optical characterization of two distinct dFONs designed to exhibit the same two-photon brightness but with different photostabilities. Saturation measurements of individual nanoparticles allowed for an estimation of their two-photon absorption cross sections, which were found to be consistent with ensemble values when taking into account a local-field correction. Time-resolved experiments further revealed that nanoparticles with the highest absorption cross section photobleach significantly faster, confirming the trade-off between absorption efficiency and photostability. These results demonstrate that the photophysical behavior of dFONs can be rationally engineered at the molecular level and provide design principles for the development of optimized organic nanoparticles for nonlinear fluorescence microscopy and bioimaging applications.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"688-696"},"PeriodicalIF":3.5,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13202471/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148040971","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}