Beilstein Journal of Nanotechnology最新文献

{"title":"Synthesis of Cu-Mo/TiO₂ and Co-Mo/TiO₂ photocatalysts for the efficient degradation of organic pollutants in water.","authors":"Ilse Acosta, Brenda Zermeño, Edgar Moctezuma, Luis F Garay-Rodríguez, Isaías Juárez-Ramírez","doi":"10.3762/bjnano.17.37","DOIUrl":"10.3762/bjnano.17.37","url":null,"abstract":"<p><p>Co-doped titanium dioxide materials were successfully synthesized by the sol-gel method. Molybdenum was incorporated into all materials at 0.5 wt %, while the co-dopants, copper and cobalt, were added at 0.2-0.5 wt %. The co-doped TiO₂ photocatalysts were characterized by XRD, SEM, N₂ physisorption, UV-vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy. The structural characterization showed stabilization of the anatase phase, and lattice distortion was evidenced after dopant incorporation into the TiO₂ structure. Morphological characterization showed poorly defined spherical particles that decreased in size with increasing Cu and Co concentrations. PL spectra showed an additional signal attributed to the ability of the metal dopants to capture electrons. The point of zero charge of the photocatalytic systems TiO₂, Cu-Mo/TiO₂, and Co-Mo/TiO₂ was evaluated and reported. Materials with lower concentrations of the co-dopants Cu and Co were more efficient at degrading ketoprofen. The most efficient photocatalyst was 0.2 Cu-0.5 Mo/TiO₂, which achieved the complete degradation of ketoprofen and 90% of mineralization. It was determined that HO^· radicals play an important role in the oxidation reactions.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"559-570"},"PeriodicalIF":3.5,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13159265/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147925981","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":"Advances in nanotechnology applied to natural products.","authors":"Douglas Dourado, Fábio Rocha Formiga, Éverton do Nascimento Alencar, Franceline Reynaud","doi":"10.3762/bjnano.17.36","DOIUrl":"10.3762/bjnano.17.36","url":null,"abstract":"","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"555-558"},"PeriodicalIF":3.5,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13159234/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147926042","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":"Electrochemical determination of ciprofloxacin using a MIL-101/reduced graphene oxide-modified electrode.","authors":"Nguyen Quang Man, Nguyen Ngoc Nghia, Nguyen Vinh Phu, Vo Thi Khanh Ly, Le Lam Son, Pham Khac Lieu, Le Thi Hong Phong, Nguyen Dinh Luyen, Dinh Quang Khieu","doi":"10.3762/bjnano.17.35","DOIUrl":"10.3762/bjnano.17.35","url":null,"abstract":"<p><p>An electrochemical sensor for the determination of ciprofloxacin (CPR) was developed using a glassy carbon electrode modified with MIL-101/reduced graphene oxide (MIL-101/rGO). MIL-101/rGO was synthesized via a facile ultrasonic-assisted method and characterized by various physicochemical techniques. The synergistic combination of MIL-101 with rGO significantly enhanced the electrocatalytic activity toward CPR oxidation. The electrochemical behavior of CPR on the MIL-101/rGO-modified electrode was systematically investigated using cyclic voltammetry and differential pulse voltammetry. Under optimized experimental conditions, the proposed sensor exhibited a linear response over 0.25-9.41 µM and a detection limit of 0.11 µM for CPR determination. The sensor also demonstrated good selectivity, satisfactory repeatability, and long-term stability. Furthermore, the method's practical applicability was validated by the determination of CPR in pharmaceutical samples, yielding acceptable recoveries. These results indicate that the MIL-101/rGO-modified electrode provides a promising and efficient platform for the electrochemical sensing of CPR in pharmaceutical and environmental analysis.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"541-554"},"PeriodicalIF":3.5,"publicationDate":"2026-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13159302/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147926062","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":"Fractional shot noise of an SU(<i>N</i>) Kondo system.","authors":"Damian Krychowski, Stanisław Lipiński","doi":"10.3762/bjnano.17.34","DOIUrl":"10.3762/bjnano.17.34","url":null,"abstract":"<p><p>We consider transport through a multilevel interacting quantum dot (N-QD) in the Kondo regime. Using the Kotliar-Ruckentein slave boson approach (SBMFA) for an <i>N</i>-level Anderson model, we define effectively noninteracting quasiparticles of the SU(<i>N</i>) Kondo system (<i>N</i> = 2, 3, 4, 5, 6). Kondo resonance transmission coefficients determine linear noise describing quasiparticle partitioning. To discuss nonlinear conductance, susceptibilities, and shot noise in the strong coupling regime, we apply Fermi liquid theory with parameters expressed by susceptibilities of pseudofermions determined within SBMFA. Nonlinear shot noise is dominated by two-quasiparticle scattering. However, we demonstrate that for occupation regions distant from the electron-hole symmetry point, the role of three-body correlations must be considered.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"515-540"},"PeriodicalIF":3.5,"publicationDate":"2026-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13159361/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147925976","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":"Probing internal continua and atomic ultrafast charge transfer within size-controlled nanoparticles by post-collision interaction in core-hole clock spectroscopy.","authors":"Johannes Lütgert, Erika Giangrisostomi, Nomi L A N Sorgenfrei, Alexander Föhlisch","doi":"10.3762/bjnano.17.33","DOIUrl":"10.3762/bjnano.17.33","url":null,"abstract":"<p><p>This study investigates size-controlled, quantum-confined CdSe/ZnS core-shell quantum dots using core-hole clock spectroscopy in combination with post-collision interaction (PCI) line shape analysis, providing insights into local charge transfer dynamics and internal continuum states. We observe an acceleration of charge transfer times by almost one order of magnitude in thin-shell quantum dots, comprising only one or three double layers of ZnS, before reaching a size-independent limit. This size-dependence is governed by the existence of a faster charge transfer channel toward the CdSe core, only accessible for the inner-most shell layers, rather than a quantum confinement effect. By extending the traditional PCI model from free-electron systems to bound-state continua, we further establish a framework for interpreting line shape asymmetries and peak shifts that are frequently observed but often overlooked in resonant Auger measurements. We show that the strongly enhanced PCI in the samples with one or three double layers can be attributed to reduced collective electronic screening. This comprehensive experimental approach enables the simultaneous observation of collective electronic properties and atom-specific dynamics within in a single measurement under identical sample conditions, an advance particularly valuable for complex, sensitive materials.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"505-514"},"PeriodicalIF":3.5,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13071936/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147687921","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":"Upcycling agroindustrial waste into graphene oxide supports for gold nanoparticles: toward sustainable nanomaterials.","authors":"Juan Marcos Castro-Tapia, Selene Acosta, Hiram Joazet Ojeda-Galván, Elsie Evelyn Araujo-Palomo, Edgar Giovanni Villabona-Leal, Mildred Quintana","doi":"10.3762/bjnano.17.32","DOIUrl":"10.3762/bjnano.17.32","url":null,"abstract":"<p><p>The aim of this work is to develop a sustainable route for producing graphene oxide-based materials from agroindustrial waste and to evaluate their structural and chemical properties in comparison with conventional graphene oxide (GO) and reduced graphene oxide (rGO). Agroindustrial waste-derived graphene oxide (Agro-GO) was synthesized from peanut shells and spent coffee grounds via a ferrocene-assisted green pyrolysis-oxidation approach. The resulting materials were compared with GO prepared via the Marcano-modified Hummers' method and its hydrazine-reduced counterpart (rGO). Comprehensive characterization was performed using UV-vis, ATR-FTIR, XPS, XRD, and Raman measurements, complemented by TGA and TEM to assess optical properties, surface chemistry, and structural and morphological features. Additionally, gold nanoparticles (AuNPs) were photochemically deposited onto Agro-GO to evaluate its potential for nanotechnology-related applications. The results reveal that Agro-GO exhibits tunable oxidation levels, diverse surface functionalities, and morphologies comparable to those of conventional GO; these properties strongly depend on the type of agroindustrial waste precursor used. These findings demonstrate the feasibility of transforming agroindustrial waste into high-value graphene-based nanomaterials and highlight the potential of sustainable synthesis routes for advancing environmentally responsible carbon-based technologies.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"489-504"},"PeriodicalIF":3.5,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13058278/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147643730","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":"Defects and defect-mediated engineering of two-dimensional materials: challenges and open questions.","authors":"Arkady V Krasheninnikov, Matthias Batzill, Anouar-Akacha Delenda, Marija Drndić, Chris Ewels, Katharina J Franke, Mahdi Ghorbani-Asl, Alexander Holleitner, Ado Jorio, Ute Kaiser, Daria Kieczka, Hannu-Pekka Komsa, Jani Kotakoski, Manuel Längle, David Lamprecht, Yun Liu, Steven G Louie, Janina Maultzsch, Thomas Michely, Katherine Milton, Anna Niggas, Hanako Okuno, Joshua A Robinson, Marika Schleberger, Bruno Schuler, Alexander Shluger, Kazu Suenaga, Kristian S Thygesen, Richard A Wilhelm, E Harriet Åhlgren, Carla Bittencourt","doi":"10.3762/bjnano.17.31","DOIUrl":"10.3762/bjnano.17.31","url":null,"abstract":"<p><p>Compared to bulk solids, defects in low-dimensional materials and, specifically, 2D systems are expected to have a stronger effect, detrimental or beneficial, on their properties. Owing to their geometry, defects in 2D materials can easily be formed due to the interaction with the environment or under impacts of energetic particles, such as ions and electrons. At the same time, many concepts of defect production under irradiation in bulk systems are not applicable for 2D materials or require substantial modifications. Various aspects of the physics and chemistry of defects in 2D materials have been addressed, and the results of these investigations are presented in hundreds of research papers and review articles. However, the challenges and open questions that still remain in the field have received relatively little attention. These topics were recently addressed at the symposium \"Defect-mediated engineering of nanomaterials for energy and quantum applications\" organized by the Beilstein-Institut. Following the discussions at the symposium, here, we present the challenges and open questions in our understanding of the behavior of defective 2D materials, interaction of energetic particles with low-dimensional targets, and defect-mediated engineering of the properties of 2D systems. We further discuss possible solutions to these problems or suggest \"work-arounds\", which should accelerate the progress in the field.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"454-488"},"PeriodicalIF":3.5,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13058279/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147643691","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":"Nanocarrier-integrated multilayer films produced by 3D printing for improved skin adhesion and curcumin photostability.","authors":"Thayse Viana de Oliveira, Ana Paula Farias Leão, Júlia Leão, Cesar Liberato Petzhold, Ruy Carlos Ruver Beck","doi":"10.3762/bjnano.17.30","DOIUrl":"10.3762/bjnano.17.30","url":null,"abstract":"<p><p>This proof-of-concept study evaluated whether semi-solid extrusion (SSE) 3D printing could be used to fabricate multilayer topical films that simultaneously enhance skin bioadhesion and photoprotection of curcumin, a highly photolabile anti-inflammatory and antioxidant compound. The development of topical films for cutaneous delivery faces several challenges, including the need for strong skin adhesion and the protection of photolabile actives from light exposure. We hypothesized that multilayered films designed for the cutaneous delivery of curcumin and produced by SSE could address these limitations. To overcome its poor solubility and enhance bioadhesion, curcumin was encapsulated in polymeric nanocapsules (C-NCs), yielding a mean particle size of 218 ± 5 nm, a polydispersity index of 0.10 ± 0.02, a zeta potential of -11 ± 4 mV, and 100% encapsulation efficiency. Films were fabricated containing either C-NCs (F_C-NC) or unloaded curcumin (F_C) and consisted of three layers, namely, a chitosan-based bottom layer, a middle layer of carboxymethylcellulose and alginate, and a carboxymethylcellulose top layer incorporating titanium dioxide (TiO₂). The lower and intermediate layers contained C-NC or curcumin. The final films (15 × 15 × 1.5 mm) contained 282.20 ± 7.75 µg and 246.80 ± 6.70 µg of curcumin in F_C-NC and F_C, respectively. Films containing the bottom chitosan layer exhibited the highest bioadhesion, while the presence of a TiO₂ top layer effectively prevented UVC-induced photodegradation, supporting our hypothesis. Furthermore, the presence of C-NCs in F_C-NC films promoted higher bioadhesion. This proof-of-concept study demonstrates the feasibility of integrating nanocarriers with 3D printing technology to engineer multilayer polymeric films for cutaneous application, offering enhanced bioadhesion and photoprotection. This work demonstrates how additive manufacturing can be used to design hierarchically structured, nanocarrier-integrated systems with spatially resolved functionalities.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"440-453"},"PeriodicalIF":3.5,"publicationDate":"2026-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13040269/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147608109","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":"First-principles study on elastic properties of Cu, (Cu_1- <i>_x</i> ,Ni <i>_x</i> )₃Sn and interfacial mechanical properties of (Cu_1- <i>_x</i> ,Ni <i>_x</i> )₃Sn/Cu in the lead-free solder joint.","authors":"Guomin Hua","doi":"10.3762/bjnano.17.29","DOIUrl":"10.3762/bjnano.17.29","url":null,"abstract":"<p><p>In this study, the elastic properties of Cu and (Cu <i>_x</i> Ni_1- <i>_x</i> )₃Sn were calculated to reveal the effects of Ni alloying on the interfacial mechanical properties of (Cu <i>_x</i> Ni_1- <i>_x</i> )₃Sn/Cu in lead-free solder joints. The results reveal that, within the thermodynamically stable domain of (Cu <i>_x</i> Ni_1- <i>_x</i> )₃Sn, the increase of Ni content can enhance the interfacial mechanical properties of (Cu <i>_x</i> Ni_1- <i>_x</i> )₃Sn/Cu, and increase the reliability of the lead-free solder joints. The enhancement mechanism can be attributed to the simultaneous improvements of oriented Young's modulus and ductility of (Cu <i>_x</i> Ni_1- <i>_x</i> )₃Sn, achieved by Ni alloying. But higher Ni content beyond the thermodynamically stable domain of (Cu <i>_x</i> Ni_1- <i>_x</i> )₃Sn will deteriorate the interfacial mechanical properties by mechanical or thermodynamic mechanisms and decrease the reliability of the lead-free solder joints. The results presented in this study will not only unveil the effects of Ni alloying on the interfacial properties of lead-free solder joints, but also will provide a guidance for high-performance lead-free solder design by alloying strategies to meet the requirements for electronic device miniaturization and harsh environmental applications.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"428-439"},"PeriodicalIF":3.5,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13033895/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147589713","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":"Biomimetic nanoparticles in cancer photodynamic therapy: a review of targeted delivery systems and therapeutic outcomes.","authors":"Valentina I Gorbacheva, Alexey S Grabovoy, Polina S Marukhina, Anastasiia O Syrocheva, Ekaterina P Kolesova","doi":"10.3762/bjnano.17.27","DOIUrl":"10.3762/bjnano.17.27","url":null,"abstract":"<p><p>Photodynamic therapy (PDT) is a minimally invasive cancer treatment that uses photosensitizers (PSs) activated by light to produce cytotoxic reactive oxygen species (ROS). Although PDT shows clinical promise, its effectiveness is limited by factors such as insufficient tumor targeting, tumor hypoxia, PS instability, and weak immune responses. Biomimetic nanoparticles (BNPs), which combine natural biological materials like cell membranes with synthetic nanocarriers, have emerged as versatile platforms to overcome these challenges. BNPs improve PDT by enhancing tumor-specific delivery of PSs, relieving hypoxia through oxygen delivery or catalytic oxygen generation, and boosting antitumor immunity by promoting immunogenic cell death and working synergistically with immune checkpoint inhibitors. This review details recent progress in BNP-based strategies for targeted PS delivery, ROS production enhancement, hypoxia modulation, and immune system activation. Additionally, it explores multifunctional and theranostic nanoplatforms, their applications in various cancers, and advances toward clinical use. By integrating targeted delivery, tumor microenvironment modulation, and immunotherapy, BNP-facilitated PDT holds great potential for advancing precise cancer treatments.</p>","PeriodicalId":8802,"journal":{"name":"Beilstein Journal of Nanotechnology","volume":"17 ","pages":"396-422"},"PeriodicalIF":3.5,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12973444/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147430113","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}