Beilstein Journal of Nanotechnology最新文献

{"title":"Influence of laser beam profile on morphology and optical properties of silicon nanoparticles formed by laser ablation in liquid.","authors":"Natalie Tarasenka, Vladislav Kornev, Alena Nevar, Nikolai Tarasenko","doi":"10.3762/bjnano.16.108","DOIUrl":"10.3762/bjnano.16.108","url":null,"abstract":"<p><p>In this study, silicon nanoparticles (NPs) were produced by pulsed laser ablation in a liquid, aiming to investigate the influence of a laser beam profile on the properties of the resultant NPs. Morphology, inner structure, and phase composition of the formed NPs were characterized by means of ultraviolet-visible spectroscopy, high-resolution transmission electron microscopy, and Raman and photoluminescence spectroscopies, and the correlation of the NP properties with the laser beam profile was studied. Three different beam profiles were selected, namely, a Bessel beam produced using an axicon, an annular profile formed using a combination of an axicon and a converging lens, and a Gaussian beam focused on the surface of a Si target using the same converging lens. In all the schemes, a nanosecond Nd³⁺:YAG laser with a pulse duration of 10 ns operating at its fundamental harmonic (1064 nm) was used as an ablation source. The beam profile has been shown to be a crucial factor significantly influencing morphology and composition of the nanostructures produced. Namely, the conditions generated using a Bessel beam profile favored the production of nanostructures having elongated filament-like morphology. The synthesized colloidal Si NPs are suggested for applications as a component of electrode materials in supercapacitors and batteries.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1533-1544"},"PeriodicalIF":2.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12415900/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028806","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":"Nanomaterials for biomedical applications.","authors":"Iqra Zainab, Zohra Naseem, Syeda Rubab Batool, Filippo Pierini, Seda Kizilel, Muhammad Anwaar Nazeer","doi":"10.3762/bjnano.16.105","DOIUrl":"10.3762/bjnano.16.105","url":null,"abstract":"","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1499-1503"},"PeriodicalIF":2.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12415916/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028867","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":"The role of biochar in combating microplastic pollution: a bibliometric analysis in environmental contexts.","authors":"Tuan Minh Truong Dang, Thao Thu Thi Huynh, Guo-Ping Chang-Chien, Ha Manh Bui","doi":"10.3762/bjnano.16.102","DOIUrl":"10.3762/bjnano.16.102","url":null,"abstract":"<p><p>This study employs a bibliometric analysis using CiteSpace to explore research trends on the impact of biochar on microplastics (MPs) in soil and water environments. In agricultural soils, MPs reduce crop yield, alter soil properties, and disrupt microbial diversity and nutrient cycling. Biochar, a stable and eco-friendly material, has demonstrated effectiveness in mitigating these effects by restoring soil chemistry, enhancing microbial diversity and improving crop productivity. Recent studies report that biochar increases crop yields by 30-81%, even under high MP contamination levels (up to five times that of biochar-modified bacteria). Additionally, biochar enhances Olsen-P availability by 46.6%, increases soil organic carbon in microaggregates by 35.7%, and reduces antibiotic resistance genes by promoting beneficial microbes such as <i>Subgroup 10</i>, <i>Bacillus</i>, and <i>Pseudomonas</i>. In aquatic systems, biochar serves as an efficient adsorbent, particularly for MPs larger than 10 µm, including polystyrene. Studies suggest that fixed-column models achieve superior removal efficiency (95.31% ± 5.26%) compared to batch systems (93.36% ± 4.92%). Specifically, for MPs ≥10 µm, fixed columns reach 99% efficiency, while magnetically modified biochar captures 96.2% of MPs as small as 1 µm. These efficiencies stem from biochar's integration of physical and chemical mechanisms that enhance MP retention, particularly for MPs smaller than 10 µm, positioning it as a promising solution for nanoplastic remediation.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1401-1416"},"PeriodicalIF":2.7,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12415920/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028821","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 antibacterial properties of nanosilver-modified cellulose triacetate membranes for seawater desalination.","authors":"Lei Wang, Shizhe Li, Kexin Xu, Wenjun Li, Ying Li, Gang Liu","doi":"10.3762/bjnano.16.100","DOIUrl":"10.3762/bjnano.16.100","url":null,"abstract":"<p><p>To address the issue of biological pollution in cellulose triacetate (CTA) membranes during seawater desalination, silver (Ag) nanoparticles were incorporated onto the CTA surface using polydopamine (PDA). PDA, which contains phenolic and amino groups, exhibits excellent adhesiveness and provides active sites for the attachment and reduction for Ag nanoparticles. Various characterizations confirm the successful introduction of Ag nanoparticles onto the surface of the PDA-modified CTA (PCTA) membrane and the preservation of CTA microstructures. Antibacterial testing demonstrates that the Ag@PCTA membrane exhibited excellent antibacterial properties. Antibacterial ring experiments revealed significant bactericidal activity against five different bacterial strains, namely, <i>Bacillus cereus</i>, <i>Bacillus thuringiensis</i>, <i>Lysinibacillus xylanilyticus</i>, <i>Lysinibacillus lparviboronicapiens</i> and <i>Burkholderia ambifaria</i>. Moreover, water flux and salt rejection rates of the Ag@PCTA membrane were comparable to those of the parent CTA membrane.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1380-1391"},"PeriodicalIF":2.7,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12415899/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028838","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":"Automated collection and categorisation of STM images and STS spectra with and without machine learning.","authors":"Dylan Stewart Barker, Adam Sweetman","doi":"10.3762/bjnano.16.99","DOIUrl":"10.3762/bjnano.16.99","url":null,"abstract":"<p><p>Atomic resolution scanning probe microscopy, and in particular scanning tunnelling microscopy (STM) allows for high-spatial-resolution imaging and also spectroscopic analysis of small organic molecules. However, preparation and characterisation of the probe apex in situ by a human operator is one of the major barriers to high-throughput experimentation and to reproducibility between experiments. Characterisation of the probe apex is usually accomplished via assessment of the imaging quality on the target molecule and also the characteristics of the scanning tunnelling spectra (STS) on clean metal surfaces. Critically for spectroscopic experiments, assessment of the spatial resolution of the image is not sufficient to ensure a high-quality tip for spectroscopic measurements. The ability to automate this process is a key aim in development of high resolution scanning probe materials characterisation. In this paper, we assess the feasibility of automating the assessment of imaging quality, and spectroscopic tip quality, via both machine learning (ML) and deterministic methods (DM) using a prototypical tin phthalocyanine on Au(111) system at 4.7 K. We find that both ML and DM are able to classify images and spectra with high accuracy, with only a small amount of prior surface knowledge. We highlight the practical advantage of DM not requiring large training datasets to implement on new systems and demonstrate a proof-of-principle automated experiment that is able to repeatedly prepare the tip, identify molecules of interest, and perform site-specific STS experiments using DM, in order to produce large numbers of spectra with different tips suitable for statistical analysis. Deterministic methods can be easily implemented to classify the imaging and spectroscopic quality of a STM tip for the purposes of high-resolution STM and STS on small organic molecules. Via automated classification of the tip state, we demonstrate an automated experiment that can collect a high number of spectra on multiple molecules without human intervention. The technique can be easily extended to most metal-adsorbate systems and is promising for the development of automated, high-throughput, STM characterisation of small adsorbate systems.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1367-1379"},"PeriodicalIF":2.7,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12415897/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145028876","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":"Enhancing the therapeutical potential of metalloantibiotics using nano-based delivery systems.","authors":"Alejandro Llamedo, Marina Cano, Raquel G Soengas, Francisco J García-Alonso","doi":"10.3762/bjnano.16.98","DOIUrl":"10.3762/bjnano.16.98","url":null,"abstract":"<p><p>The rapid spread of antibiotic resistance has intensified the need for novel therapeutic strategies against multidrug-resistant bacterial infections. Metalloantibiotics present a promising alternative in combating resistant pathogens. However, the clinical application of metalloantibiotics is limited by their potential toxicity, instability, and lack of target specificity. Encapsulating metalloantibiotics in drug delivery systems, such as liposomes, nanoparticles, and polymeric carriers, could mitigate these challenges, enhancing their therapeutic index and enabling their precise, localized release. Recent reviews have outlined the key design parameters and clinical translation challenges associated with nanocarrier-based antimicrobial therapies, underscoring their relevance in overcoming bacterial resistance mechanisms [Xie, Y.; Liu, H.; Teng, Z.; Ma, J.; Liu, G. <i>Nanoscale</i> <b>2025,</b> <i>17,</i> 5605-5628. https://doi.org/10.1039%2FD4NR04774E ]. This review explores the potential of encapsulated metalloantibiotics as a new frontier in antimicrobial therapy. We address the mechanisms by which drug delivery systems can stabilize and direct metalloantibiotics to their biological targets, discuss current advancements in encapsulation methods, and examine the efficacy of encapsulated metalloantibiotics. Finally, we consider the challenges and future directions for the integration of metalloantibiotic-loaded carriers in the fight against antibiotic-resistant infections.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1350-1366"},"PeriodicalIF":2.7,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12362307/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144940762","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":"Ferroptosis induction by engineered liposomes for enhanced tumor therapy.","authors":"Alireza Ghasempour, Mohammad Amin Tokallou, Mohammad Reza Naderi Allaf, Mohsen Moradi, Hamideh Dehghan, Mahsa Sedighi, Mohammad-Ali Shahbazi, Fahimeh Lavi Arab","doi":"10.3762/bjnano.16.97","DOIUrl":"10.3762/bjnano.16.97","url":null,"abstract":"<p><p>Ferroptosis has shown potential therapeutic effects in tumor therapy as an iron-dependent programmed cell death. The induction of ferroptosis is based on lipid peroxidation, the accumulation of iron and reactive oxygen species, and the depletion of glutathione. Nowadays, various nanoparticles are reported for ferroptosis-based therapy. Among them, engineered liposomes have received more attention due to their biocompatibility, low immunogenicity, and flexibility in chemical and structural modifications. The present review focuses on the mechanisms of ferroptosis and its induction by engineered liposomes to improve tumor therapy. It also highlights the fascinating outcome of liposome-mediated ferroptosis in overcoming the obstacles to cancer therapy, along with the limitations and possible future directions.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1325-1349"},"PeriodicalIF":2.7,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12362308/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144940707","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":"Wavelength-dependent correlation of LIPSS periodicity and laser penetration depth in stainless steel.","authors":"Nitin Chaudhary, Chavan Akash Naik, Shilpa Mangalassery, Jai Prakash Gautam, Sri Ram Gopal Naraharisetty","doi":"10.3762/bjnano.16.95","DOIUrl":"10.3762/bjnano.16.95","url":null,"abstract":"<p><p>This research paper delves into the exploration of laser-induced periodic surface structures (LIPSS) on a 100 µm thin stainless steel (SS) sheet. Through the application of laser irradiation with wavelengths spanning from 400 to 2400 nm, we systematically generate ladder-like LIPSS across a substantial area, incorporating LIPSS with both low spatial frequency (LSFL) and high spatial frequency (HSFL) simultaneously. Notably, the embedded LIPSS exhibit a linear relationship in the observed spatial periodicity of LSFL and HSFL with wavelengths up to 2000 nm, after which a decrease in periodicity is observed. By employing cross-sectional electron microscopy, we scrutinize the penetration depth of laser radiation or laser-affected zone, in the LIPSS-formed SS sheets, revealing a parallel trend with LSFL and HSFL spatial periodicity. Specifically, the penetration depth increases with wavelength up to 2000 nm, reaching a peak at approximately 13 µm, and subsequently decreases. This distinctive correlation underscores the role of plasma material reorganizational effects in LIPSS formation at higher wavelengths, presenting a new experimental observation to the existing literature. The findings enhance our comprehension of laser-material interactions and hold potential implications for surface engineering and material science applications.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1302-1315"},"PeriodicalIF":2.7,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12362304/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144940696","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":"Enhancing the photoelectrochemical performance of BiOI-derived BiVO₄ films by controlled-intensity current electrodeposition.","authors":"Huu Phuc Dang, Khanh Quang Nguyen, Nguyen Thi Mai Tho, Tran Le","doi":"10.3762/bjnano.16.94","DOIUrl":"10.3762/bjnano.16.94","url":null,"abstract":"<p><p>This study investigates the fabrication of BiVO₄ photoanodes using a controlled-intensity current electrodeposition method to improve their photoelectrochemical (PEC) performance. The impact of varying the deposition current density and VO(acac)₂ concentration was systematically analyzed to optimize the crystallinity, surface morphology, and electronic properties of the films. Subsequently, an electrochemical deposition method was developed to facilitate the uniform distribution of V₂O₅ among Bi-O-I flakes to homogeneously enhance the conversion reaction. The XRD pattern confirms the monoclinic scheelite BiVO₄ structure with dominant (121) and (004) peaks. FESEM imaging revealed that the different deposition conditions influenced the surface morphologies of the BiOI and BiVO₄ films. Photocurrent density measurements showed that BiVO₄(326) achieved 1.2 mA·cm^-2 at 1.23 V vs RHE, representing a significant enhancement compared to the other samples. The surface hole injection efficiency was measured to be 47%, whereas the incident photon-to-current efficiency reached a peak of 18.1% at 420 nm. The applied bias photon-to-current efficiency of BiVO₄(326) was also superior to that of the samples fabricated with lower current density, highlighting the benefits of the optimized electrodeposition conditions for the former.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1289-1301"},"PeriodicalIF":2.7,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12337977/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144820469","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":"<i>Acrocomia aculeata</i> oil-loaded nanoemulsion: development, anti-inflammatory properties, and cytotoxicity evaluation.","authors":"Verónica Bautista-Robles, Hady Keita, Edgar Julián Paredes Gamero, Layna Tayná Brito Leite, Jessica de Araújo Isaías Muller, Mônica Cristina Toffoli Kadri, Ariadna Lafourcade Prada, Jesús Rafael Rodríguez Amado","doi":"10.3762/bjnano.16.93","DOIUrl":"10.3762/bjnano.16.93","url":null,"abstract":"<p><p>The oil from the pulp of the bocaiúva fruit may have several medical applications. However, little is known about its pharmacological activity. Therefore, this study aimed to develop and evaluate the anti-inflammatory activity of a nanoemulsion loaded with the oil extracted from the pulp of the fruit of <i>Acrocomia aculeata</i>. Griffin's method determined the hydrophilic-lipophilic equilibrium ratio of the nanoemulsion. It was shown to have an adequate droplet size (173.60 nm) with excellent homogeneity (polydispersity index 0.200). The anti-inflammatory activity of the nanoemulsion was evaluated by the carrageenan-induced paw edema method. Finally, the non-hemolytic and cytotoxic activity of the nanoformulation was determined to assess its safety. The nanoemulsion loaded with <i>Acrocomia aculeata</i> fruit pulp oil was shown to have parameters suitable for its characterization, impressive anti-inflammatory activity, and a safe profile.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"16 ","pages":"1277-1288"},"PeriodicalIF":2.7,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12337996/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144820467","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}