Novel synthesis of high surface area nano-CeZrO2: transformation of the microstructure and textural properties as the effect of calcination

Muhamad Nazri Abu Shah, Roslina Ismail, Kamariah Noor Ismail, Abdul Hadi Zainal

Abstract


Semi-crystalline ceria-zirconia, Ce0.8Zr0.2O2 nanoparticles had been successfully synthesized by water/oil microemulsion method at room temperature with and without calcination process. The basic understanding on the influence of microemulsion system and the relation of calcination process on the microstructural of nanoparticles were studied. Without calcination, the nanoparticles with a consistent size of the droplet size of microemulsion, crystals and particles in the range of < 10nm were produced. Zirconia ions incorporated into the ceria structure to form a complete solid solution of nanoparticles. The specific surface area was 169.80 m2/g and it was recommended as a highly microporous material. While, after calcination process, the degree of crystallinity of nanoparticles increased. The crystals and particles size growth up to 12 nm, while the surface area reduced to 46.59 m2/g. Therefore, it can be concluded that the proper microstructure of nanoparticles CeZrO2 can be synthesized using the microemulsion method at room temperature without calcination process and it is suitable for catalysts application.

Keywords


Cerium oxide; microemulsion; semi-crystalline; nanoparticles; calcination

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Published by: IOP Publishing and Vietnam Academy of Science and Technology
Frequency: Articles appear online as they are published with print copies published 4 times per year
ISSN: Print: 2043-6254; Online: 2043-6262
DOI Range: 10.1088/issn.2043-6262

© Copyright 2016 Advances in Natural Sciences: Nanoscience and Nanotechnology