ArticleNanomaterials (Basel, Switzerland)2020
In-Situ Gold-Ceria Nanoparticles: Superior Optical Fluorescence Quenching Sensor for Dissolved Oxygen.
Article in Nanomaterials (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 18 citations in OpenAlex.
- Ceria nanoparticles: biomedical applications and toxicity.Journal of Zhejiang University. Science. B · 2024Review
- Harnessing Nuclear Energy to Gold Nanoparticles for the Concurrent Chemoradiotherapy of Glioblastoma.Nanomaterials (Basel, Switzerland) · 2023Article
- Size Effect of Nanoceria Blended with CIME Biodiesel on Engine Characteristics.Nanomaterials (Basel, Switzerland) · 2022Article
- Ratiometric Optical Fiber Dissolved Oxygen Sensor Based on Fluorescence Quenching Principle.Sensors (Basel, Switzerland) · 2022Article
- Discussions of Fluorescence in Selenium Chemistry: Recently Reported Probes, Particles, and a Clearer Biological Knowledge.Molecules (Basel, Switzerland) · 2021Review
Corrections and comments
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Authors and funding
3 authors at 3 institutions in 3 countries.
Funding
Abstract
Cerium oxide (ceria) nanoparticles (NPs) have been proved to be an efficient optical fluorescent material through generating visible emission (~530 nm) under violet excitation. This feature allowed ceria NPs to be used as an optical sensor via the fluorescence quenching Technique. In this paper, the impact of in-situ embedded gold nanoparticles (Au NPs) inside ceria nanoparticles was studied. Then, gold-ceria NPs were used for sensing dissolved oxygen (DO) in aqueous media. It was observed that both fluorescence intensity and lifetime were changed due to increased concentration of DO. Added gold was found to enhance the sensitivity of ceria to DO quencher detection. This enhancement was due to optical coupling between the fluorescence emission spectrum of ceria with the surface plasmonic resonance of gold nanoparticles. In addition, gold caused the decrease of ceria nanoparticles' bandgap, which indicates the formation of more oxygen vacancies inside the non-stoichiometric crystalline structure of ceria. The Stern-Volmer constant, which indicates the sensitivity of optical sensing material, of ceria-gold NPs with added DO was found to be 893.7 M
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