Ceramic materials for skeletal repair and reconstruction are expanding to a number of different applications. Present research is addressing new compositions and performances to promote osseo-integration through metal coatings. Nanotechnology plays a key role in this research because nanostructures can be introduced into implants to functionalize them and/or to enhance their properties, such as the thermal or mechanical response. In this work, the insertion of Y(2)O(3) nanoparticles into a hydroxyapatite (HA) coating of Ti using colloidal processing technology was developed. The suspensions of HA and Y(2)O(3) nanoparticles were formulated with a focus on zeta potential, particle size distribution, and viscosity for the codeposition of both phases by electrophoresis. The microstructure of the nanocomposite coating was optimized by adjusting the main parameters of the electrophoretic deposition process. A threshold value of the applied electric field for the composite shaping was identified. The results demonstrate that the Y(2)O(3) nanoparticles are homogeneously distributed in the coating and decrease in concentration as the distance from the substrate increases. As a consequence of the presence of the Y(2)O(3), delays in the HA thermal decomposition and the improvement of metal-ceramic joining were observed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/jp305176h | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Nano versus bulk: Evaluating the toxicity of lanthanum, yttrium, and cerium oxides on Enchytraeus crypticus.
NanoImpact
December 2024
Biology Department & CESAM, University of Aveiro, 3810-193 Aveiro, Portugal. Electronic address:
Article Synopsis
- The study investigates the toxicity of lanthanum, yttrium, and cerium oxides on the soil organism Enchytraeus crypticus, focusing on survival, reproduction, avoidance behavior, and DNA integrity.
- The research finds that the bulk forms of LaO have more significant effects than their nanoparticle counterparts, while YO nanoparticles are more toxic overall, impacting reproduction and causing DNA damage at lower concentrations.
- Results indicate that the toxicity of rare earth element oxides varies based on the type of element, concentration, exposure duration, and form, underscoring the need for careful risk assessment for soil ecosystems affected by these substances.
Photoactivity Enhancement of WO Photoanodes Using the Combined Effect of Plasmonic Au and Photoluminescent YO:Eu Nanoparticles.
ACS Omega
November 2024
Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana 010000, Kazakhstan.
The WO photoanode has great potential application for solar photoelectrochemical water oxidation due to suitable band edge positions with water oxidation potentials. However, it suffers from poor light absorbance in the visible region. Here, we use Eu-doped YO nanoparticles (NPs) in combination with plasmonic gold (Au) NPs to better utilize and adsorb photons from UV and visible regions of sunlight.
View Article and Find Full Text PDFAssessment of toxicity and oxidative stress induced by rare earth oxide nanoparticles in brine shrimp (Artemia salina).
Chemosphere
November 2024
Munzur University, Faculty of Faculty of Engineering, Department of Mechanical Engineering, Tunceli, Turkiye.
This study meticulously explored the oxidative stress effects induced by lanthanum (III) oxide (LaO), erbium (III) oxide (ErO), and yttrium (III) oxide (YO) nanoparticles on Artemia salina, with the objective of evaluating the environmental toxicity of rare earth oxide nanoparticles. The characterization of the nanoparticles was conducted using a suite of advanced techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), dynamic light scattering (DLS), and zeta potential analysis. Artemia salina, a widely recognized model organism in ecotoxicological research, was exposed to these nanoparticles under meticulously controlled laboratory conditions.
View Article and Find Full Text PDFApplication of Y-MOF-CNT-Derived YO-C@CNT Composites in Lithium-Sulfur Battery Separators.
Langmuir
November 2024
Institute for Advanced Materials, College of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
In order to mitigate the shuttle effect of lithium polysulfides in lithium-sulfur batteries, we propose a yttrium-metal-organic framework-carbon nanotube (Y-MOF-CNT)-derived YO-C@CNT composite for modifying the separator in this study. The Y-MOFs, comprising yttrium (Y) rare earth metal and terephthalic acid, exemplify a prototypical category of metal-organic framework (MOF) materials. They manifest the advantageous attributes associated with MOFs while concurrently possessing distinctive catalytic traits ascribed to rare earth elements.
View Article and Find Full Text PDFTRIM24-DTNBP1-ATP7A mediated astrocyte cuproptosis in cognition and memory dysfunction caused by YO NPs.
Sci Total Environ
December 2024
Department of orthodontics, School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou, China. Electronic address:
Yttrium oxide nanoparticles (YO NPs), extensively utilized rare earth nanoparticles, exhibited a diverse range of applications across various fields, which leading to increased human exposure. Moreover, potential neurotoxic risks have been associated with their use, yet the underlying mechanism remains unclear. The present study aimed to investigate the effects of YO NPs on cognitive function in rats with a particular focus on elucidating the pivotal role played by astrocytes in this process.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!