Pablo Araujo Oliveira, Gabriella T L Teixeira, Pollyane S Oliveira, Thaís S Farnesi-de-Assunção, Isabela S Rotta, Karina F D Vicentine, Dayane S Alvares, Jéferson A Moreto, Aline D Paiva, Natália Bueno Leite Slade
{"title":"Biosynthesis, characterization, and biofunctional assessment of niobium oxide nanostructures obtained using lactic acid bacteria-derived supernatants.","authors":"Pablo Araujo Oliveira, Gabriella T L Teixeira, Pollyane S Oliveira, Thaís S Farnesi-de-Assunção, Isabela S Rotta, Karina F D Vicentine, Dayane S Alvares, Jéferson A Moreto, Aline D Paiva, Natália Bueno Leite Slade","doi":"10.3762/bjnano.17.77","DOIUrl":"10.3762/bjnano.17.77","url":null,"abstract":"<p><p>Nanotechnology offers innovative opportunities for developing functional materials with applications across biomedical and food-related fields. Among metallic and metal oxide nanostructures, niobium-based compounds have recently attracted attention due to their remarkable mechanical strength, corrosion resistance, thermal conductivity, and biocompatibility. In this study, niobium oxide nanostructures were synthesized through a green, cell-free approach using supernatants derived from lactic acid bacteria (LAB) <i>Lacticaseibacillus rhamnosus</i> and <i>Lacticaseibacillus paracasei</i> UFTM 2.9. The use of LAB supernatants provided an eco-friendly and sustainable route for nanoparticle production, avoiding toxic reagents while exploiting biologically active metabolites for bioreduction and stabilization. The synthesized nanostructures were characterized by scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM/EDX), scanning-transmission electron microscopy (STEM), ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) and zeta potential analysis. In vitro assays using Vero-CCL81 cells demonstrated that the nanostructures exhibited low cytotoxicity, confirming their potential biocompatibility. Antibacterial and antibiofilm activities were evaluated against <i>Escherichia coli</i> ATCC 25922, revealing significant inhibitory effects. These findings highlight a novel and sustainable route for producing niobium oxide nanostructures via LAB-mediated synthesis, with promising implications for biomedical and food safety applications.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1128-1141"},"PeriodicalIF":3.5,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13501231/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148811830","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}
Leo Sala, Tomas Perecko, Antonín Kaňa, Jaroslav Kočišek
{"title":"Facile synthesis of platinated DNA nanoparticles with radiosensitizing potential.","authors":"Leo Sala, Tomas Perecko, Antonín Kaňa, Jaroslav Kočišek","doi":"10.3762/bjnano.17.76","DOIUrl":"https://doi.org/10.3762/bjnano.17.76","url":null,"abstract":"<p><p>DNA nanostructures are promising drug delivery platforms but often suffer from limited structural stability and high production complexity. Cisplatin can cross-link DNA and act as a therapeutic agent, offering a simplified approach to stabilize DNA nanostructures while incorporating therapeutic functionality. Here, we explore cisplatin-mediated compaction of a single-stranded DNA scaffold to form stable nanoparticles and evaluate their potential as radiosensitizers. Cisplatin-induced cross-linking produced compact DNA nanoparticles with size and morphology controlled by mixing ratio and incubation time, reaching maximum loading near a 1:1 cisplatin-to-nucleotide mixing ratio, resulting in 0.28 ± 0.06 bound Pt atoms per nucleotide. The nanoparticles showed high thermal stability with the onset of thermal degradation between 80 and 90 °C and remained structurally stable at 4 °C storage for months. Clonogenic assays in FaDu cells demonstrated radiosensitization, with a dose enhancement ratio of 1.17 ± 0.07 at 10% survival. Cisplatin-mediated cross-linking provides a simple and effective method for producing stable DNA nanoparticles without complex origami assembly. The resulting structures retain the radiosensitizing properties of platinum while offering improved stability and storage characteristics. These platinated DNA nanoparticles represent a promising platform for further development of scalable DNA-based radiosensitizers with high drug loading, monodispersity, stability, and versatility for further functionalization.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1117-1127"},"PeriodicalIF":3.5,"publicationDate":"2026-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13478894/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148787700","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}
Thuy-Huong Nguyen, Van-Nghia Nguyen, Ha Thi Thu Nguyen, Ha Ngoc Nguyen, Anh Duc Nguyen, Tuyen Viet Nguyen, Truong Xuan Nguyen
{"title":"Synthesis of carbon dot-mediated gold nanostructures: experimental and quantum chemical insights into turn-on fluorescence sensing of <i>N</i>-acetylcysteine.","authors":"Thuy-Huong Nguyen, Van-Nghia Nguyen, Ha Thi Thu Nguyen, Ha Ngoc Nguyen, Anh Duc Nguyen, Tuyen Viet Nguyen, Truong Xuan Nguyen","doi":"10.3762/bjnano.17.75","DOIUrl":"https://doi.org/10.3762/bjnano.17.75","url":null,"abstract":"<p><p>In this work, a green and sustainable hydrothermal approach was employed to synthesize nitrogen-doped carbon dots (NCDs) using lemon juice as a natural precursor. The as-prepared NCDs served as eco-friendly reducing agents and stabilizing scaffolds for the subsequent in situ synthesis of gold nanoparticles (Au@NCDs). The structural and optical properties of the nanocomposite were comprehensively characterized using various analytical techniques. The intrinsic fluorescence of NCDs was significantly quenched upon formation of the composite, mainly due to non-radiative energy transfer processes. Interestingly, the quenched fluorescence could be efficiently restored upon the addition of <i>N</i>-acetylcysteine (NAC), enabling the development of an \"off-on\" fluorescent sensing platform. The sensing mechanism was systematically elucidated through a combination of spectroscopic studies and density functional theory calculations, revealing that fluorescence recovery originates from a ligand exchange process driven by the stronger binding affinity of NAC toward the gold surface, particularly via Au-S interactions. Under optimized conditions, the assay exhibited a robust linear response for NAC concentrations ranging from 4.0 to 20.0 mg/L, with a detection limit of 0.863 mg/L. These results demonstrate that the Au@NCDs system can function as a sensitive and selective OFF-ON fluorescent probe for NAC detection. This study provides a cost-effective and eco-friendly sensing platform with significant potential for analytical applications in pharmaceutical monitoring.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1103-1116"},"PeriodicalIF":3.5,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13478897/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148787243","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}
Nguyen Quang Man, Ngo Thi Thanh Xuan, Vo Thi Khanh Ly, Le Van Thanh Son, Le Duc Anh, Le Thi Hong Phong, Nguyen Hai Phong, Pham Khac Lieu, Le Lam Son, Dinh Quang Khieu
{"title":"Electrochemical sensing of sildenafil in pharmaceutical formulations using an (S,N)-doped reduced graphene oxide-modified electrode.","authors":"Nguyen Quang Man, Ngo Thi Thanh Xuan, Vo Thi Khanh Ly, Le Van Thanh Son, Le Duc Anh, Le Thi Hong Phong, Nguyen Hai Phong, Pham Khac Lieu, Le Lam Son, Dinh Quang Khieu","doi":"10.3762/bjnano.17.74","DOIUrl":"https://doi.org/10.3762/bjnano.17.74","url":null,"abstract":"<p><p>In this work, (S,N)-co-doped reduced graphene oxide ((S,N)-rGO) was successfully synthesized via thermal treatment and thoroughly characterized by X-ray diffraction, high-resolution transmission electron microscopy, elemental mapping, photoluminescence, and Raman spectroscopy, confirming the successful incorporation of nitrogen and sulfur into the graphene framework. The obtained (S,N)-rGO was used to modify a glassy carbon electrode for the electrochemical determination of sildenafil (SDN). The modified electrode exhibited enhanced electrocatalytic activity toward SDN oxidation, providing a well-defined current response. Under optimized conditions, the sensor showed a good linear relationship between peak current and SDN concentration in the range of 0.25-4.98 µM, with a low limit of detection of 0.24 µM and a limit of quantification of 0.78 µM. The proposed sensor demonstrated satisfactory repeatability, reproducibility, and stability, as well as good selectivity in the presence of potential interfering substances. The applicability of the method was validated by the determination of SDN in pharmaceutical samples. The results were in good agreement with those from high-performance liquid chromatography, indicating that the proposed electrochemical method is reliable and suitable for practical analysis.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1087-1102"},"PeriodicalIF":3.5,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13478895/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148787705","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":"Breaking barriers: nanosystems to overcome solubility and permeability challenges of second-generation tyrosine kinase inhibitors.","authors":"Bhagya Shree, Abhishek Sharma, Manish Kumar, Ruchi Chawla, Brahmeshwar Mishra","doi":"10.3762/bjnano.17.73","DOIUrl":"https://doi.org/10.3762/bjnano.17.73","url":null,"abstract":"<p><p>Second-generation tyrosine kinase inhibitors (TKIs) - bosutinib, nilotinib, and dasatinib - demonstrate therapeutic efficacy across various chronic malignancies, including chronic myelogenous leukaemia, acute lymphoblastic leukaemia, breast cancer, lung cancer, pancreatic cancer, and hepatocellular cancer. However, in the Biopharmaceutics Classification System, they are classified as class-II and class-IV drugs, exhibiting poor, pH-dependent solubility and low permeability, leading to poor and unpredictable bioavailability and variable plasma concentrations, compromising their clinical efficacy. Even though the oral route is the most widely accepted mode of administration, systematic analysis of the formulation database revealed that the conventional formulations encounter biopharmaceutical barriers limiting the therapeutic performance of drugs. Hence, this review examines nanotechnology-driven solutions that may improve the second-generation TKIs' biopharmaceutical properties for better therapeutic performance by enhancing their pharmacokinetic properties. Various nanosystems, such as solid lipid nanoparticles, nanostructured lipid carriers, polymeric micelles, polymeric nanoparticles, nanocrystals, self-nanoemulsifying drug delivery systems, and nanosuspensions, have been developed to enhance solubility, permeability, and bioavailability. The nanoformulations achieved variable improvements in solubility and bioavailability (1.5- to 38-fold) compared with free drugs, depending on surface characteristics, carrier composition, and drug properties. This was possible through tailored particle size, drug loading, and precise drug release kinetics via various mechanisms. This review consolidates the evidence from peer researchers on positioning nanoformulations as a transformative tool to improve the efficacy of second-generation TKIs. Critical evaluation was performed based on solubility/permeability enhancement potential, safety profile, toxicological burden, long-term stability, scalability, and feasibility for clinical transition.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1063-1086"},"PeriodicalIF":3.5,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13478902/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148787718","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":"Nanoglasses: a trail towards uncharted regions of vitreous materials and their properties?","authors":"Gerhard Wilde, Horst Hahn","doi":"10.3762/bjnano.17.72","DOIUrl":"10.3762/bjnano.17.72","url":null,"abstract":"<p><p>Nanoglasses are a class of non-crystalline materials composed of nanoscale glass regions separated by glass-glass interfaces that possess distinct structural and thermodynamic characteristics. These internal interface regions with finite width of the order of several nanometres introduce excess free volume, altered short- and medium-range order, including the distribution of chemical constituents, and modified energetic states compared with conventional homogeneous glasses, giving rise to unique structural and functional properties. Additionally, the interfaces between the glass cores and the glass-glass interfaces need to be considered, as the specific interface areas are large. In this perspective paper, we discuss the structure, thermodynamics, and stability of glass-glass interfaces and examine their implications for the design and properties of nanoglasses, highlighting that this approach represents a novel pathway for modifying amorphous materials more broadly. Particular attention is given to columnar thin-film nanoglasses, where vertically aligned glassy columns create a high density of internal interfaces. We outline how interfacial excess energy, configurational entropy, and relaxation processes influence the metastability and properties of these materials. Furthermore, we discuss perspectives on how the control of interface density and chemistry may enable tailoring of mechanical, diffusion, and functional properties, including enhanced plasticity, altered transport behaviour, and tuneable optical or electronic responses. Finally, open questions regarding interfacial structure, thermodynamic driving forces, and stability are identified, emphasizing opportunities for integrating nanoglasses into advanced functional thin-film systems.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1047-1062"},"PeriodicalIF":3.5,"publicationDate":"2026-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13454881/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148705332","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}
Shuyu Huang, Yiming Song, Antoine Hinaut, Gema Navarro-Marín, Antonio Cammarata, Ernst Meyer, Thilo Glatzel
{"title":"Vibration-induced dynamic structural superlubricity on MoS<sub>2</sub>/Au(111) under ultrahigh vacuum.","authors":"Shuyu Huang, Yiming Song, Antoine Hinaut, Gema Navarro-Marín, Antonio Cammarata, Ernst Meyer, Thilo Glatzel","doi":"10.3762/bjnano.17.71","DOIUrl":"10.3762/bjnano.17.71","url":null,"abstract":"<p><p>Achieving rapid and flexible control of friction across different material surfaces is of great significance and remains a longstanding challenging goal in modern tribology. Here, we demonstrate dynamic structural superlubricity in monolayer MoS<sub>2</sub>-coated gold surfaces induced by external mechanical actuation. By tuning the excitation frequency to the cantilever resonance, stick-slip motion is effectively suppressed, leading to a significant reduction in friction even under high-load conditions. Experimental results, supported by a modified phononic friction model, reveal that torsional vibrations reduce energy barriers and promote transitions between atomic sites. This strategy provides a universal and reversible approach for active friction control at the nanoscale.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1039-1046"},"PeriodicalIF":3.5,"publicationDate":"2026-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13454882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148705313","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":"Influence of an external electric field on the catalytic CO oxidation of nanoscaled CeO<sub>2</sub> and its La<sup>3+</sup> and Gd<sup>3+</sup> congeners.","authors":"Parastoo Jamshidi, Silvio Heinschke, Jörg J Schneider","doi":"10.3762/bjnano.17.70","DOIUrl":"10.3762/bjnano.17.70","url":null,"abstract":"<p><p>Herein, we investigate how aliovalent doping and application of an external electrical field modulates the catalytic activity of nanoscale ceria (<i>n</i>CeO<sub>2</sub>) towards CO oxidation. Gd<sup>3+</sup> and La<sup>3+</sup> were doped into the <i>n</i>CeO<sub>2</sub> lattice. Such doping influences the concentration and mobility of oxygen vacancies, which are promoting CO oxidation to CO<sub>2</sub>. When applying an electric potential, charge transport within <i>n</i>CeO<sub>2</sub> is modulated. Our results show that both dopants Gd<sup>3+</sup> and La<sup>3+</sup> lead to an increasing V<sub>O</sub> concentration, whereas the impact of the applied potential on the oxidation behaviour varies with catalyst composition. The applied electric potential markedly improves the activity of undoped <i>n</i>CeO<sub>2</sub> and 5% Gd<sup>3+</sup>-doped <i>n</i>CeO<sub>2</sub>; however, it causes no significant change in CO oxidation capability in 2.5% Gd<sup>3+</sup>-doped and La<sup>3+</sup>-doped samples. These findings can be understood considering the applied potential and its influence on the polaron mobility and V<sub>O</sub> arrangement, which are controlled by the underlying oxidic defect structure.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1028-1038"},"PeriodicalIF":3.5,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13454883/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148705293","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":"Synthesis and characterization of RF-sputtered ZnTe/Cu<sub>2-</sub> <i><sub>x</sub></i> Te thin films for solar cell applications.","authors":"Gerardo Arreola Jardón, Susana Meraz Dávila, Claudia Elena Pérez García, Aime Margarita Gutiérrez Peralta, Sergio Joaquín Jiménez Sandoval","doi":"10.3762/bjnano.17.69","DOIUrl":"10.3762/bjnano.17.69","url":null,"abstract":"<p><p>The incorporation of copper and oxygen into zinc telluride (ZnTe) thin films deposited by radio-frequency magnetron sputtering from a single ZnTe-CuO composite target was investigated. The nominal Cu and O concentrations ranged from 3 to 13 atom %, and films were grown at substrate temperatures of 300 and 350 °C. Energy-dispersive X-ray spectroscopy confirmed controlled compositional transfer from the target to the films. X-ray diffraction analysis revealed that all films are polycrystalline, exhibiting a coexistence of zinc blende and wurtzite ZnTe phases. Low dopant concentrations produced only minor lattice modifications, while higher Cu and O contents promoted the formation of Cu<sub>2-</sub> <i><sub>x</sub></i> Te secondary phases, as confirmed by Raman spectroscopy, grazing-incidence X-ray diffraction and scanning electron microscopy. Optical measurements showed a significant reduction in infrared transmittance with increasing Cu concentration, attributed to the metallic-like absorption of Cu<sub>2-</sub> <i><sub>x</sub></i> Te phases. Electrical characterization revealed a transition from semiconducting to highly conductive behavior with resistivity decreasing from approximately 10<sup>2</sup> to 10<sup>-2</sup> Ω·cm for films grown at 300 °C and from 10<sup>1</sup> to 10<sup>-3</sup> Ω·cm for films grown at 350 °C. Simultaneously, the carrier concentration increased from approximately 10<sup>17</sup> to 10<sup>21</sup> cm<sup>-3</sup> and the mobility from 10<sup>-1</sup> to 10<sup>1</sup> cm<sup>2</sup>·V<sup>-1</sup>·s<sup>-1</sup>. These results indicate that structural, optical, and electrical properties of ZnTe are primarily influenced by Cu incorporation and the formation of conductive Cu-rich secondary phases, yielding a biphasic system composed of semiconducting ZnTe and conductive Cu-rich telluride phases. These material properties suggest potential relevance for future studies of back-contact materials in CdTe-based solar cells.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"1016-1027"},"PeriodicalIF":3.5,"publicationDate":"2026-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13430528/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148668182","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}
Juan Mendoza Turmero, Cristina Parra Pantoja, Marcos Sabino Gutiérrez, Milagro Fernández-Delgado, Claudia Alvarado-Castillo, Damarys Soto Gil, María E Gomes Gomes, Yony Gutiérrez Barrios, Daniel Suárez Arteaga
{"title":"Ultrasonic irradiation in the synthesis of nanohydroxyapatite: a chemically friendly technique for improving hemocompatibility and antibiofilm applications.","authors":"Juan Mendoza Turmero, Cristina Parra Pantoja, Marcos Sabino Gutiérrez, Milagro Fernández-Delgado, Claudia Alvarado-Castillo, Damarys Soto Gil, María E Gomes Gomes, Yony Gutiérrez Barrios, Daniel Suárez Arteaga","doi":"10.3762/bjnano.17.68","DOIUrl":"10.3762/bjnano.17.68","url":null,"abstract":"<p><p>This study explores the synthesis of nanohydroxyapatite (nHA) using high-frequency ultrasonic irradiation (UI), a chemically friendly technique aligned with green chemistry principles. Synthesis was achieved by varying the UI time (15, 30, 45, and 60 min) and the reaction medium. Water-based mixtures were used, that is, water/acetone (W/ACET), water/tetrahydrofuran (W/THF), and water/ethanol (W/ETOH). The resulting nHA was characterized structurally using FTIR, XRD, TGA, FESEM, and specific surface area determination. These analyses revealed the formation of carbonated nHA similar to biological apatite, with distinct morphologies and particle sizes dependent on the solvent system used. All synthesized materials exhibited high thermal stability and yields exceeding 80%. Hemocompatibility studies showed that nHA samples obtained in the W/THF mixture presented very low hemotoxicity (hemolysis < 2%), and did not affect platelet ADP aggregation processes. Microbiological assays showed a significant reduction in <i>Pseudomonas aeruginosa</i> biomass production (<i>p</i> < 0.05) after 24 h, particularly for nHA synthesized with the W/ETOH mixture. There was also a less bacterial colonization, cellular aggregates, or formation of specialized structures after treatment with this bioceramic, compared to the commercial hydroxyapatite, suggesting potential antibiofilm properties. This research presents an original and efficient method for producing nHA as a promising biomaterial for tissue engineering.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"991-1015"},"PeriodicalIF":3.5,"publicationDate":"2026-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13430526/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148668194","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}