Ultradispersed Powdery Y2O3-Bi2O3-ZnO Composition with High Chemical Homogeneity for Fine-Grained Ceramics

Elena A. Trusova; Kirill V. Vokhmintcev; Aleksey N. Kirichenko

doi:10.4028/www.scientific.net/AST.87.36

Paper Titles

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Ultradispersed Powdery Y₂O₃-Bi₂O₃-ZnO Composition with High Chemical Homogeneity for Fine-Grained Ceramics
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Preparation of Highly-Dispersed Powders of Cobalt, Nickel, Molybdenum and Tungsten Oxides by Modified Sol-Gel Technique
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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 87Ultradispersed Powdery Y2O3-Bi2O3-ZnO Composition...

Ultradispersed Powdery Y₂O₃-Bi₂O₃-ZnO Composition with High Chemical Homogeneity for Fine-Grained Ceramics

Abstract:

The technologically acceptable modified sol-gel technique was developed for obtaining the ultradispersed powdery composition Y₂O₃-Bi₂O₃-ZnO, which is promising new generation material for photocatalysts and solar cells. The solution for preparing a sintering composition with a high chemical homogeneity was proposed to provide using ultradispersed powders consisting of ZnO nanoparticles (40-70 nm), decorating with Bi₂O₃ and Y₂O₃ particles with average size of 4-20 nm. All synthesized powders were characterized by XRD and TEM methods. It was found that ZnO surface differently affects the dispersity of Bi₂O₃ and Y₂O₃ in the composites. TEM microphotographs show that the Bi₂O₃ particles uniformly distributed over ZnO surface. The Bi₂O₃ particle size on ZnO surface was 5-11 nm, which is significantly less than in the single powder of Bi₂O₃ (110-130 nm). However, in the case of Y₂O₃ similar effect was not observed, and average size of its crystallites was 5-12 nm, which agrees well with particle sizes in single powder.

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Advances in Science and Technology (Volume 87)

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36-41

DOI:

https://doi.org/10.4028/www.scientific.net/AST.87.36

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Online since:

October 2014

Authors:

Elena A. Trusova*, Kirill V. Vokhmintcev, Aleksey N. Kirichenko

Keywords:

Chemical Decoration, Decorated ZnO Nanoparticles, Modified Sol-Gel Technique

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