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Antioxidant properties of ALD grown nanoceria films with tunable valency.
Gupta, Ankur; Sakthivel, Tamil S; Neal, Craig J; Koul, Supriya; Singh, Sushant; Kushima, Akihiro; Seal, Sudipta.
Afiliação
  • Gupta A; Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Blvd., P.O. Box 162450, Orlando, Florida 32816, USA. Sudipta.Seal@ucf.edu guptaankur@knights.ucf.edu and Advanced Materials Processing and Analysis Center, University of Central Florida, 4000 Central Florid
  • Sakthivel TS; Advanced Materials Processing and Analysis Center, University of Central Florida, 4000 Central Florida Blvd., P.O. Box 162455, Orlando, Florida 32816, USA.
  • Neal CJ; Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Blvd., P.O. Box 162450, Orlando, Florida 32816, USA. Sudipta.Seal@ucf.edu guptaankur@knights.ucf.edu and Advanced Materials Processing and Analysis Center, University of Central Florida, 4000 Central Florid
  • Koul S; Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Blvd., P.O. Box 162450, Orlando, Florida 32816, USA. Sudipta.Seal@ucf.edu guptaankur@knights.ucf.edu and Advanced Materials Processing and Analysis Center, University of Central Florida, 4000 Central Florid
  • Singh S; Advanced Materials Processing and Analysis Center, University of Central Florida, 4000 Central Florida Blvd., P.O. Box 162455, Orlando, Florida 32816, USA.
  • Kushima A; Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Blvd., P.O. Box 162450, Orlando, Florida 32816, USA. Sudipta.Seal@ucf.edu guptaankur@knights.ucf.edu and Advanced Materials Processing and Analysis Center, University of Central Florida, 4000 Central Florid
  • Seal S; Department of Materials Science and Engineering, University of Central Florida, 12760 Pegasus Blvd., P.O. Box 162450, Orlando, Florida 32816, USA. Sudipta.Seal@ucf.edu guptaankur@knights.ucf.edu and Advanced Materials Processing and Analysis Center, University of Central Florida, 4000 Central Florid
Biomater Sci ; 7(7): 3051-3061, 2019 Jul 01.
Article em En | MEDLINE | ID: mdl-31115397
ABSTRACT
Herein, we provide the first account of a method to control cerium oxide's mixed valence states (as Ce3+ to Ce4+ ratio) in ultra-thin films formed via atomic layer deposition (ALD). It is determined that modulation of Ce3+/Ce4+ ratio occurs with respect to film thickness and is analogous to the change in surface chemistry observed for cerium oxide nanoparticles with varying particle diameter. The influence of film thickness on enzyme-mimetic radical scavenging is also characterized. Higher film thicknesses show 9-fold increase in catalytic activity. In vitro biocompatibility (apoptosis < 4%) and electrochemical biosensing (lowest concentration 18 ppt) studies were performed to demonstrate the potential of ALD-grown nanoceria films for biomedical applications.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cério / Nanotecnologia / Nanopartículas / Antioxidantes Limite: Humans Idioma: En Ano de publicação: 2019 Tipo de documento: Article
Texto completo
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XML
PubMed Links
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cério / Nanotecnologia / Nanopartículas / Antioxidantes Limite: Humans Idioma: En Ano de publicação: 2019 Tipo de documento: Article