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Nanodots of Transition Metal Sulfides, Carbonates, and Oxides Obtained Through Spontaneous Co-Precipitation with Silica.
Nanomaterials (Basel)
December 2024
Material Science, BASF SE, RGA/BM-B007, Carl-Bosch-Str. 38, D-67056 Ludwigshafen, Germany.
The controlled formation and stabilization of nanoparticles is of fundamental relevance for materials science and key to many modern technologies. Common synthetic strategies to arrest growth at small sizes and prevent undesired particle agglomeration often rely on the use of organic additives and require non-aqueous media and/or high temperatures, all of which appear critical with respect to production costs, safety, and sustainability. In the present work, we demonstrate a simple one-pot process in water under ambient conditions that can produce particles of various transition metal carbonates and sulfides with sizes of only a few nanometers embedded in a silica shell, similar to particles derived from more elaborate synthesis routes, like the sol-gel process.
View Article and Find Full Text PDFReview on macromolecule-based magnetic theranostic agents for biomedical applications: Targeted therapy and diagnostic imaging.
J Pharm Sci
December 2024
Egyptian Petroleum Research Institute, 1 Ahmed El-Zomor Street, El Zohour Region, Nasr City, Cairo 11727, Egypt. Electronic address:
Clinical diagnostics and biological research are advanced by magnetic theranostic, which uses macromolecule-based magnetic theranostic agents for targeted therapy and diagnostic imaging. Within this review, the interaction of magnetic nanoparticles (MNPs) with biological macromolecules will be covered. The exciting potential of macromolecule-based magnetic theranostic agents to be used as a tool in drug delivery, photothermally therapy (PTT), gene therapy, hyperthermia therapy and photodynamic therapy (PDT) will be discussed.
View Article and Find Full Text PDFEncapsulation of fluorescent carbon dots into mesoporous SiO colloidal spheres by surface functionalization-assisted cooperative assembly for high-contrast latent fingerprint development.
Chemosphere
December 2024
State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, Guangxi, China; College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, China; Department of Chemistry, Imperial College London, 82 Wood Lane, London, W12 0BZ, UK. Electronic address:
Exploiting solid powder fluorescence holds significant potential in diverse domains including medicine and forensics. Conventional fingerprint detection methods often fall short due to low contrast, sensitivity, and high toxicity. To addressing these challenges, we present a novel method for latent fingerprint detection using fluorescent carbon dots (CDs) encapsulated into conventional or mesoporous SiO colloidal spheres (CD@SiO or CDs@m-SiO) through a surface functionalization-assisted cooperative assembly process.
View Article and Find Full Text PDFAntifungal Chitosan Nanocomposites-A New Perspective for Extending Food Storage.
Int J Mol Sci
December 2024
Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-236 Lodz, Poland.
Chitosan, a biopolymer derived from chitin, exhibits significant antifungal properties, making it a valuable compound for various applications in agriculture food preservation, and biomedicine. The present study aimed to assess the antifungal properties of chitosan-modified films using sol-gel derivatives (CS:ZnO) or graphene-filled chitosan, (CS:GO and CS:rGO) against two strains of fungi that are the most common cause of food spoilage: ATCC 9643 and DSM 1282. The results indicate important differences in the antifungal activity of native chitosan films and zinc oxide-modified chitosan films.
View Article and Find Full Text PDFA comparative study of Cu-based nanoparticles and their spin-coated films: photocatalytic degradation mechanisms and efficiencies towards malachite green and neutral red azo dyes.
Environ Sci Pollut Res Int
January 2025
Institute of Forestry and Engineering, Estonian University of Life Sciences, 51014, Tartu, Estonia.
In this work, a comparison of the photocatalytic activity of free-standing Cu-based nanoparticle mixtures and spin-coated nanoparticle films under visible-light radiation is conducted. Herein, CuO, CuO-Cu, CuO-CuN-Cu, and CuN-Cu nanoparticle mixtures were successfully synthesized by a non-aqueous sol-gel route and then deposited on a glass substrate by spin-coating. The surface chemistry of the nanoparticles studied by X-ray photoelectron spectroscopy (XPS) allowed elucidating the nanoparticle synthesis mechanism.
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