Enhancing the optical emission of cerium oxide nanoparticles is essential for potential biomedical applications. In the present work, we report a simple chemical precipitation technique to synthesize europium-doped cerium oxide nanostructures to enhance the emission properties. Structural and optical properties showed an acute dependence on the concentration of oxygen ion vacancy and trivalent cerium, which, in turn, could be modified by dopant concentration and the annealing temperature. Results from X-ray photoelectron spectroscopy showed an increase in tetravalent cerium concentration to 85% on annealing at 900 degrees C. The concentration of oxygen ion vacancy increased from 1.7x10(20) cm(-3) to 4.1x10(20) cm(-3) with the increase in dopant concentration. Maximum emission at room temperature was obtained for 15 mol % Eu-doped ceria, which improved with annealing temperature. The role of oxygen ion vacancies and trivalent cerium in modifying the emission properties is discussed.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/la901298q | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Innovative ultrasound assisted synthesis of sponge like cerium dioxide nanostructure using Rosa Damascena extract and its efficient performance for cancer therapy.
Sci Rep
January 2025
Center for Advanced Materials and Structures, School of Science and Technology, The University of Georgia, 0171, Tbilisi, Georgia.
In this work, cerium dioxide nanostructures were synthesized in an easy sonochemical way. CeO nanoparticles have received much attention in nanotechnology. CeONPs, exhibit biomimetic properties depending on their size, ratio of valency on their surface, and the ambient physico-chemical properties.
View Article and Find Full Text PDFAmelioration of the growth and physiological responses of Capsicum annum L. via quantum dot-graphene oxide, cerium oxide, and titanium oxide nanoparticles foliar application under salinity stress.
Sci Rep
January 2025
Department of Horticultural Science, Faculty of Agriculture, University of Maragheh, Maragheh, 55181-83111, Iran.
Salinity is one of the predominant abiotic stressors that reduce plant growth, yield, and productivity. Ameliorating salt tolerance through nanotechnology is an efficient and reliable methodology for enhancing agricultural crops yield and quality. Nanoparticles enhance plant tolerance to salinity stress by facilitating reactive oxygen species detoxification and by reducing the ionic and osmotic stress effects on plants.
View Article and Find Full Text PDFNanoceria as a non-steroidal anti-inflammatory drug for endometriosis theranostics.
J Control Release
January 2025
Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, 1030 Hitt Street, Columbia, MO 65211, USA. Electronic address:
Endometriosis, the growth of endometrial-like tissue outside the uterus, causes chronic pain and infertility in 10 % of reproductive-aged women worldwide. Unfortunately, no permanent cure exists, and current medical and surgical treatments offer only temporary relief. Endometriosis is a chronic inflammatory disease characterized by immune system dysfunction.
View Article and Find Full Text PDFHigh-performance solid-state electrochemical thermal switches with earth-abundant cerium oxide.
Sci Adv
January 2025
Research Institute for Electronic Science, Hokkaido University, N20W10, Kita, Sapporo 001-0020, Japan.
Thermal switches, which electrically turn heat flow on and off, have attracted attention as thermal management devices. Electrochemical reduction/oxidation switches the thermal conductivity (κ) of active metal oxide films. The performance of the previously proposed electrochemical thermal switches is low; the on/off κ-ratio is mostly less than 5, and the κ-switching width is less than 5 watts per meter kelvin.
View Article and Find Full Text PDFA methotrexate labelled dual metal oxide nanocomposite for long-lasting anti-cancer theranostics.
Mater Today Bio
February 2025
Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, Queensland, 4111, Australia.
Article Synopsis
- The study investigates a new cancer treatment system called Chit-IOCO-MTX-Cy5, which combines chitosan nanocomposites with cerium oxide and iron oxide nanoparticles, along with methotrexate and a dye for imaging.
- The system acts as both an anti-cancer agent and enhances MRI imaging, showing high effectiveness with better results than currently approved imaging agents.
- It significantly reduces tumor growth with no regrowth after treatment, while showing good safety in mice, indicating its potential as an effective cancer theranostic tool.
Want 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!