Synthèse verte de CeO2
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Synthèse verte de CeO2

Synthèse verte de CeO2


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About the Book

Récemment, le dioxyde de cérium nanocristallin (CeO2) a suscité de nombreux intérêts en raison de sa structure de type fluorite, de sa nature redox notable et de son importante capacité de stockage et de libération de l'oxygène (OSC) grâce à un changement superficiel entre l'état Ce4+ et l'état d'oxydation Ce3+. Les matériaux CeO2 ont un large éventail d'applications, notamment les catalyseurs, les cellules solaires, les filtres bloquant les ultraviolets (UV), les capteurs de gaz, etc. Dans le CeO2 nanocristallin, les vides d'oxygène conduisent à la conduction de l'oxygène. Le contrôle de la morphologie et de la taille des cristallites sur les propriétés de la céria revêt une importance considérable en raison des réactions aux joints de grains et de l'appauvrissement significatif des porteurs dans les nano-systèmes anisotropes, qui peuvent modifier efficacement la nature de l'oxydoréduction et du transport. La nature non stoechiométrique de CeO2 était plus importante sous forme nanocristalline en raison de son rapport surface/volume amélioré. La diminution de la taille des cristallites entraîne une réduction de l'énergie de formation des vides d'oxygène. La zircone (ZrO2) est un semi-conducteur de type n dont la bande interdite est de 5,0 eV. Elle est largement utilisée comme matière première dans les textiles, les cosmétiques, les céramiques, les électrolytes des piles à combustible à oxyde solide, les capteurs de gaz et les dispositifs optiques.


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Product Details
  • ISBN-13: 9786207951635
  • Publisher: KS Omniscriptum Publishing
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Sub Title: Cr3+ et ZrO2: Fe3+ Études structurales et PL
  • Width: 152 mm
  • ISBN-10: 6207951638
  • Publisher Date: 16 Aug 2024
  • Height: 229 mm
  • No of Pages: 60
  • Spine Width: 4 mm
  • Weight: 150 gr


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